PVE/QemuServer.pm

   1 package PVE::QemuServer;
   2
   3 use strict;
   4 use POSIX;
   5 use IO::Handle;
   6 use IO::Select;
   7 use IO::File;
   8 use IO::Dir;
   9 use IO::Socket::UNIX;
  10 use File::Basename;
  11 use File::Path;
  12 use File::stat;
  13 use Getopt::Long;
  14 use Digest::SHA;
  15 use Fcntl ':flock';
  16 use Cwd 'abs_path';
  17 use IPC::Open3;
  18 use JSON;
  19 use Fcntl;
  20 use PVE::SafeSyslog;
  21 use Storable qw(dclone);
  22 use PVE::Exception qw(raise raise_param_exc);
  23 use PVE::Storage;
  24 use PVE::Tools qw(run_command lock_file file_read_firstline);
  25 use PVE::JSONSchema qw(get_standard_option);
  26 use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file cfs_lock_file);
  27 use PVE::INotify;
  28 use PVE::ProcFSTools;
  29 use PVE::QMPClient;
  30 use Time::HiRes qw(gettimeofday);
  31
  32 my $cpuinfo = PVE::ProcFSTools::read_cpuinfo();
  33
  34 # Note about locking: we use flock on the config file protect
  35 # against concurent actions.
  36 # Aditionaly, we have a 'lock' setting in the config file. This
  37 # can be set to 'migrate', 'backup', 'snapshot' or 'rollback'. Most actions are not
  38 # allowed when such lock is set. But you can ignore this kind of
  39 # lock with the --skiplock flag.
  40
  41 cfs_register_file('/qemu-server/',
  42                   \&parse_vm_config,
  43                   \&write_vm_config);
  44
  45 PVE::JSONSchema::register_standard_option('skiplock', {
  46     description => "Ignore locks - only root is allowed to use this option.",
  47     type => 'boolean',
  48     optional => 1,
  49 });
  50
  51 PVE::JSONSchema::register_standard_option('pve-qm-stateuri', {
  52     description => "Some command save/restore state from this location.",
  53     type => 'string',
  54     maxLength => 128,
  55     optional => 1,
  56 });
  57
  58 PVE::JSONSchema::register_standard_option('pve-snapshot-name', {
  59     description => "The name of the snapshot.",
  60     type => 'string', format => 'pve-configid',
  61     maxLength => 40,
  62 });
  63
  64 #no warnings 'redefine';
  65
  66 unless(defined(&_VZSYSCALLS_H_)) {
  67     eval 'sub _VZSYSCALLS_H_ () {1;}' unless defined(&_VZSYSCALLS_H_);
  68     require 'sys/syscall.ph';
  69     if(defined(&__x86_64__)) {
  70         eval 'sub __NR_fairsched_vcpus () {499;}' unless defined(&__NR_fairsched_vcpus);
  71         eval 'sub __NR_fairsched_mknod () {504;}' unless defined(&__NR_fairsched_mknod);
  72         eval 'sub __NR_fairsched_rmnod () {505;}' unless defined(&__NR_fairsched_rmnod);
  73         eval 'sub __NR_fairsched_chwt () {506;}' unless defined(&__NR_fairsched_chwt);
  74         eval 'sub __NR_fairsched_mvpr () {507;}' unless defined(&__NR_fairsched_mvpr);
  75         eval 'sub __NR_fairsched_rate () {508;}' unless defined(&__NR_fairsched_rate);
  76         eval 'sub __NR_setluid () {501;}' unless defined(&__NR_setluid);
  77         eval 'sub __NR_setublimit () {502;}' unless defined(&__NR_setublimit);
  78     }
  79     elsif(defined( &__i386__) ) {
  80         eval 'sub __NR_fairsched_mknod () {500;}' unless defined(&__NR_fairsched_mknod);
  81         eval 'sub __NR_fairsched_rmnod () {501;}' unless defined(&__NR_fairsched_rmnod);
  82         eval 'sub __NR_fairsched_chwt () {502;}' unless defined(&__NR_fairsched_chwt);
  83         eval 'sub __NR_fairsched_mvpr () {503;}' unless defined(&__NR_fairsched_mvpr);
  84         eval 'sub __NR_fairsched_rate () {504;}' unless defined(&__NR_fairsched_rate);
  85         eval 'sub __NR_fairsched_vcpus () {505;}' unless defined(&__NR_fairsched_vcpus);
  86         eval 'sub __NR_setluid () {511;}' unless defined(&__NR_setluid);
  87         eval 'sub __NR_setublimit () {512;}' unless defined(&__NR_setublimit);
  88     } else {
  89         die("no fairsched syscall for this arch");
  90     }
  91     require 'asm/ioctl.ph';
  92     eval 'sub KVM_GET_API_VERSION () { &_IO(0xAE, 0x);}' unless defined(&KVM_GET_API_VERSION);
  93 }
  94
  95 sub fairsched_mknod {
  96     my ($parent, $weight, $desired) = @_;
  97
  98     return syscall(&__NR_fairsched_mknod, int($parent), int($weight), int($desired));
  99 }
 100
 101 sub fairsched_rmnod {
 102     my ($id) = @_;
 103
 104     return syscall(&__NR_fairsched_rmnod, int($id));
 105 }
 106
 107 sub fairsched_mvpr {
 108     my ($pid, $newid) = @_;
 109
 110     return syscall(&__NR_fairsched_mvpr, int($pid), int($newid));
 111 }
 112
 113 sub fairsched_vcpus {
 114     my ($id, $vcpus) = @_;
 115
 116     return syscall(&__NR_fairsched_vcpus, int($id), int($vcpus));
 117 }
 118
 119 sub fairsched_rate {
 120     my ($id, $op, $rate) = @_;
 121
 122     return syscall(&__NR_fairsched_rate, int($id), int($op), int($rate));
 123 }
 124
 125 use constant FAIRSCHED_SET_RATE  => 0;
 126 use constant FAIRSCHED_DROP_RATE => 1;
 127 use constant FAIRSCHED_GET_RATE  => 2;
 128
 129 sub fairsched_cpulimit {
 130     my ($id, $limit) = @_;
 131
 132     my $cpulim1024 = int($limit * 1024 / 100);
 133     my $op = $cpulim1024 ? FAIRSCHED_SET_RATE : FAIRSCHED_DROP_RATE;
 134
 135     return fairsched_rate($id, $op, $cpulim1024);
 136 }
 137
 138 my $nodename = PVE::INotify::nodename();
 139
 140 mkdir "/etc/pve/nodes/$nodename";
 141 my $confdir = "/etc/pve/nodes/$nodename/qemu-server";
 142 mkdir $confdir;
 143
 144 my $var_run_tmpdir = "/var/run/qemu-server";
 145 mkdir $var_run_tmpdir;
 146
 147 my $lock_dir = "/var/lock/qemu-server";
 148 mkdir $lock_dir;
 149
 150 my $pcisysfs = "/sys/bus/pci";
 151
 152 my $confdesc = {
 153     onboot => {
 154         optional => 1,
 155         type => 'boolean',
 156         description => "Specifies whether a VM will be started during system bootup.",
 157         default => 0,
 158     },
 159     autostart => {
 160         optional => 1,
 161         type => 'boolean',
 162         description => "Automatic restart after crash (currently ignored).",
 163         default => 0,
 164     },
 165     hotplug => {
 166         optional => 1,
 167         type => 'boolean',
 168         description => "Activate hotplug for disk and network device",
 169         default => 0,
 170     },
 171     reboot => {
 172         optional => 1,
 173         type => 'boolean',
 174         description => "Allow reboot. If set to '0' the VM exit on reboot.",
 175         default => 1,
 176     },
 177     lock => {
 178         optional => 1,
 179         type => 'string',
 180         description => "Lock/unlock the VM.",
 181         enum => [qw(migrate backup snapshot rollback)],
 182     },
 183     cpulimit => {
 184         optional => 1,
 185         type => 'integer',
 186         description => "Limit of CPU usage in per cent. Note if the computer has 2 CPUs, it has total of 200% CPU time. Value '0' indicates no CPU limit.\n\nNOTE: This option is currently ignored.",
 187         minimum => 0,
 188         default => 0,
 189     },
 190     cpuunits => {
 191         optional => 1,
 192         type => 'integer',
 193         description => "CPU weight for a VM. Argument is used in the kernel fair scheduler. The larger the number is, the more CPU time this VM gets. Number is relative to weights of all the other running VMs.\n\nNOTE: You can disable fair-scheduler configuration by setting this to 0.",
 194         minimum => 0,
 195         maximum => 500000,
 196         default => 1000,
 197     },
 198     memory => {
 199         optional => 1,
 200         type => 'integer',
 201         description => "Amount of RAM for the VM in MB. This is the maximum available memory when you use the balloon device.",
 202         minimum => 16,
 203         default => 512,
 204     },
 205     balloon => {
 206         optional => 1,
 207         type => 'integer',
 208         description => "Amount of target RAM for the VM in MB.",
 209         minimum => 16,
 210     },
 211     keyboard => {
 212         optional => 1,
 213         type => 'string',
 214         description => "Keybord layout for vnc server. Default is read from the datacenter configuration file.",
 215         enum => PVE::Tools::kvmkeymaplist(),
 216         default => 'en-us',
 217     },
 218     name => {
 219         optional => 1,
 220         type => 'string', format => 'dns-name',
 221         description => "Set a name for the VM. Only used on the configuration web interface.",
 222     },
 223     scsihw => {
 224         optional => 1,
 225         type => 'string',
 226         description => "scsi controller model",
 227         enum => [qw(lsi virtio-scsi-pci megasas)],
 228         default => 'lsi',
 229     },
 230     description => {
 231         optional => 1,
 232         type => 'string',
 233         description => "Description for the VM. Only used on the configuration web interface. This is saved as comment inside the configuration file.",
 234     },
 235     ostype => {
 236         optional => 1,
 237         type => 'string',
 238         enum => [qw(other wxp w2k w2k3 w2k8 wvista win7 l24 l26)],
 239         description => <<EODESC,
 240 Used to enable special optimization/features for specific
 241 operating systems:
 242
 243 other  => unspecified OS
 244 wxp    => Microsoft Windows XP
 245 w2k    => Microsoft Windows 2000
 246 w2k3   => Microsoft Windows 2003
 247 w2k8   => Microsoft Windows 2008
 248 wvista => Microsoft Windows Vista
 249 win7   => Microsoft Windows 7
 250 l24    => Linux 2.4 Kernel
 251 l26    => Linux 2.6/3.X Kernel
 252
 253 other|l24|l26                  ... no special behaviour
 254 wxp|w2k|w2k3|w2k8|wvista|win7  ... use --localtime switch
 255 EODESC
 256     },
 257     boot => {
 258         optional => 1,
 259         type => 'string',
 260         description => "Boot on floppy (a), hard disk (c), CD-ROM (d), or network (n).",
 261         pattern => '[acdn]{1,4}',
 262         default => 'cdn',
 263     },
 264     bootdisk => {
 265         optional => 1,
 266         type => 'string', format => 'pve-qm-bootdisk',
 267         description => "Enable booting from specified disk.",
 268         pattern => '(ide|sata|scsi|virtio)\d+',
 269     },
 270     smp => {
 271         optional => 1,
 272         type => 'integer',
 273         description => "The number of CPUs. Please use option -sockets instead.",
 274         minimum => 1,
 275         default => 1,
 276     },
 277     sockets => {
 278         optional => 1,
 279         type => 'integer',
 280         description => "The number of CPU sockets.",
 281         minimum => 1,
 282         default => 1,
 283     },
 284     cores => {
 285         optional => 1,
 286         type => 'integer',
 287         description => "The number of cores per socket.",
 288         minimum => 1,
 289         default => 1,
 290     },
 291     acpi => {
 292         optional => 1,
 293         type => 'boolean',
 294         description => "Enable/disable ACPI.",
 295         default => 1,
 296     },
 297     agent => {
 298         optional => 1,
 299         type => 'boolean',
 300         description => "Enable/disable Qemu GuestAgent.",
 301         default => 0,
 302     },
 303     kvm => {
 304         optional => 1,
 305         type => 'boolean',
 306         description => "Enable/disable KVM hardware virtualization.",
 307         default => 1,
 308     },
 309     tdf => {
 310         optional => 1,
 311         type => 'boolean',
 312         description => "Enable/disable time drift fix. This is ignored for kvm versions newer that 1.0 (not needed anymore).",
 313         default => 1,
 314     },
 315     localtime => {
 316         optional => 1,
 317         type => 'boolean',
 318         description => "Set the real time clock to local time. This is enabled by default if ostype indicates a Microsoft OS.",
 319     },
 320     freeze => {
 321         optional => 1,
 322         type => 'boolean',
 323         description => "Freeze CPU at startup (use 'c' monitor command to start execution).",
 324     },
 325     vga => {
 326         optional => 1,
 327         type => 'string',
 328         description => "Select VGA type. If you want to use high resolution modes (>= 1280x1024x16) then you should use option 'std' or 'vmware'. Default is 'std' for win7/w2k8, and 'cirrur' for other OS types",
 329         enum => [qw(std cirrus vmware)],
 330     },
 331     watchdog => {
 332         optional => 1,
 333         type => 'string', format => 'pve-qm-watchdog',
 334         typetext => '[[model=]i6300esb|ib700] [,[action=]reset|shutdown|poweroff|pause|debug|none]',
 335         description => "Create a virtual hardware watchdog device.  Once enabled (by a guest action), the watchdog must be periodically polled by an agent inside the guest or else the guest will be restarted (or execute the action specified)",
 336     },
 337     startdate => {
 338         optional => 1,
 339         type => 'string',
 340         typetext => "(now | YYYY-MM-DD | YYYY-MM-DDTHH:MM:SS)",
 341         description => "Set the initial date of the real time clock. Valid format for date are: 'now' or '2006-06-17T16:01:21' or '2006-06-17'.",
 342         pattern => '(now|\d{4}-\d{1,2}-\d{1,2}(T\d{1,2}:\d{1,2}:\d{1,2})?)',
 343         default => 'now',
 344     },
 345     startup => {
 346         optional => 1,
 347         type => 'string', format => 'pve-qm-startup',
 348         typetext => '[[order=]\d+] [,up=\d+] [,down=\d+] ',
 349         description => "Startup and shutdown behavior. Order is a non-negative number defining the general startup order. Shutdown in done with reverse ordering. Additionally you can set the 'up' or 'down' delay in seconds, which specifies a delay to wait before the next VM is started or stopped.",
 350     },
 351     args => {
 352         optional => 1,
 353         type => 'string',
 354         description => <<EODESCR,
 355 Note: this option is for experts only. It allows you to pass arbitrary arguments to kvm, for example:
 356
 357 args: -no-reboot -no-hpet
 358 EODESCR
 359     },
 360     tablet => {
 361         optional => 1,
 362         type => 'boolean',
 363         default => 1,
 364         description => "Enable/disable the usb tablet device. This device is usually needed to allow absolute mouse positioning. Else the mouse runs out of sync with normal vnc clients. If you're running lots of console-only guests on one host, you may consider disabling this to save some context switches.",
 365     },
 366     migrate_speed => {
 367         optional => 1,
 368         type => 'integer',
 369         description => "Set maximum speed (in MB/s) for migrations. Value 0 is no limit.",
 370         minimum => 0,
 371         default => 0,
 372     },
 373     migrate_downtime => {
 374         optional => 1,
 375         type => 'integer',
 376         description => "Set maximum tolerated downtime (in seconds) for migrations.",
 377         minimum => 0,
 378         default => 1,
 379     },
 380     cdrom => {
 381         optional => 1,
 382         type => 'string', format => 'pve-qm-drive',
 383         typetext => 'volume',
 384         description => "This is an alias for option -ide2",
 385     },
 386     cpu => {
 387         optional => 1,
 388         description => "Emulated CPU type.",
 389         type => 'string',
 390         enum => [ qw(486 athlon pentium pentium2 pentium3 coreduo core2duo kvm32 kvm64 qemu32 qemu64 phenom cpu64-rhel6 cpu64-rhel5 Conroe Penryn Nehalem Westmere Opteron_G1 Opteron_G2 Opteron_G3 host) ],
 391         default => 'qemu64',
 392     },
 393     parent => get_standard_option('pve-snapshot-name', {
 394         optional => 1,
 395         description => "Parent snapshot name. This is used internally, and should not be modified.",
 396     }),
 397     snaptime => {
 398         optional => 1,
 399         description => "Timestamp for snapshots.",
 400         type => 'integer',
 401         minimum => 0,
 402     },
 403     vmstate => {
 404         optional => 1,
 405         type => 'string', format => 'pve-volume-id',
 406         description => "Reference to a volume which stores the VM state. This is used internally for snapshots.",
 407     },
 408 };
 409
 410 # what about other qemu settings ?
 411 #cpu => 'string',
 412 #machine => 'string',
 413 #fda => 'file',
 414 #fdb => 'file',
 415 #mtdblock => 'file',
 416 #sd => 'file',
 417 #pflash => 'file',
 418 #snapshot => 'bool',
 419 #bootp => 'file',
 420 ##tftp => 'dir',
 421 ##smb => 'dir',
 422 #kernel => 'file',
 423 #append => 'string',
 424 #initrd => 'file',
 425 ##soundhw => 'string',
 426
 427 while (my ($k, $v) = each %$confdesc) {
 428     PVE::JSONSchema::register_standard_option("pve-qm-$k", $v);
 429 }
 430
 431 my $MAX_IDE_DISKS = 4;
 432 my $MAX_SCSI_DISKS = 14;
 433 my $MAX_VIRTIO_DISKS = 16;
 434 my $MAX_SATA_DISKS = 6;
 435 my $MAX_USB_DEVICES = 5;
 436 my $MAX_NETS = 32;
 437 my $MAX_UNUSED_DISKS = 8;
 438 my $MAX_HOSTPCI_DEVICES = 2;
 439 my $MAX_SERIAL_PORTS = 4;
 440 my $MAX_PARALLEL_PORTS = 3;
 441
 442 my $nic_model_list = ['rtl8139', 'ne2k_pci', 'e1000',  'pcnet',  'virtio',
 443                       'ne2k_isa', 'i82551', 'i82557b', 'i82559er'];
 444 my $nic_model_list_txt = join(' ', sort @$nic_model_list);
 445
 446 # fixme:
 447 my $netdesc = {
 448     optional => 1,
 449     type => 'string', format => 'pve-qm-net',
 450     typetext => "MODEL=XX:XX:XX:XX:XX:XX [,bridge=<dev>][,rate=<mbps>][,tag=<vlanid>]",
 451     description => <<EODESCR,
 452 Specify network devices.
 453
 454 MODEL is one of: $nic_model_list_txt
 455
 456 XX:XX:XX:XX:XX:XX should be an unique MAC address. This is
 457 automatically generated if not specified.
 458
 459 The bridge parameter can be used to automatically add the interface to a bridge device. The Proxmox VE standard bridge is called 'vmbr0'.
 460
 461 Option 'rate' is used to limit traffic bandwidth from and to this interface. It is specified as floating point number, unit is 'Megabytes per second'.
 462
 463 If you specify no bridge, we create a kvm 'user' (NATed) network device, which provides DHCP and DNS services. The following addresses are used:
 464
 465 10.0.2.2   Gateway
 466 10.0.2.3   DNS Server
 467 10.0.2.4   SMB Server
 468
 469 The DHCP server assign addresses to the guest starting from 10.0.2.15.
 470
 471 EODESCR
 472 };
 473 PVE::JSONSchema::register_standard_option("pve-qm-net", $netdesc);
 474
 475 for (my $i = 0; $i < $MAX_NETS; $i++)  {
 476     $confdesc->{"net$i"} = $netdesc;
 477 }
 478
 479 my $drivename_hash;
 480
 481 my $idedesc = {
 482     optional => 1,
 483     type => 'string', format => 'pve-qm-drive',
 484     typetext => '[volume=]volume,] [,media=cdrom|disk] [,cyls=c,heads=h,secs=s[,trans=t]] [,snapshot=on|off] [,cache=none|writethrough|writeback|unsafe|directsync] [,format=f] [,backup=yes|no] [,rerror=ignore|report|stop] [,werror=enospc|ignore|report|stop] [,aio=native|threads]',
 485     description => "Use volume as IDE hard disk or CD-ROM (n is 0 to " .($MAX_IDE_DISKS -1) . ").",
 486 };
 487 PVE::JSONSchema::register_standard_option("pve-qm-ide", $idedesc);
 488
 489 my $scsidesc = {
 490     optional => 1,
 491     type => 'string', format => 'pve-qm-drive',
 492     typetext => '[volume=]volume,] [,media=cdrom|disk] [,cyls=c,heads=h,secs=s[,trans=t]] [,snapshot=on|off] [,cache=none|writethrough|writeback|unsafe|directsync] [,format=f] [,backup=yes|no] [,rerror=ignore|report|stop] [,werror=enospc|ignore|report|stop] [,aio=native|threads]',
 493     description => "Use volume as SCSI hard disk or CD-ROM (n is 0 to " . ($MAX_SCSI_DISKS - 1) . ").",
 494 };
 495 PVE::JSONSchema::register_standard_option("pve-qm-scsi", $scsidesc);
 496
 497 my $satadesc = {
 498     optional => 1,
 499     type => 'string', format => 'pve-qm-drive',
 500     typetext => '[volume=]volume,] [,media=cdrom|disk] [,cyls=c,heads=h,secs=s[,trans=t]] [,snapshot=on|off] [,cache=none|writethrough|writeback|unsafe|directsync] [,format=f] [,backup=yes|no] [,rerror=ignore|report|stop] [,werror=enospc|ignore|report|stop] [,aio=native|threads]',
 501     description => "Use volume as SATA hard disk or CD-ROM (n is 0 to " . ($MAX_SATA_DISKS - 1). ").",
 502 };
 503 PVE::JSONSchema::register_standard_option("pve-qm-sata", $satadesc);
 504
 505 my $virtiodesc = {
 506     optional => 1,
 507     type => 'string', format => 'pve-qm-drive',
 508     typetext => '[volume=]volume,] [,media=cdrom|disk] [,cyls=c,heads=h,secs=s[,trans=t]] [,snapshot=on|off] [,cache=none|writethrough|writeback|unsafe|directsync] [,format=f] [,backup=yes|no] [,rerror=ignore|report|stop] [,werror=enospc|ignore|report|stop] [,aio=native|threads]',
 509     description => "Use volume as VIRTIO hard disk (n is 0 to " . ($MAX_VIRTIO_DISKS - 1) . ").",
 510 };
 511 PVE::JSONSchema::register_standard_option("pve-qm-virtio", $virtiodesc);
 512
 513 my $usbdesc = {
 514     optional => 1,
 515     type => 'string', format => 'pve-qm-usb-device',
 516     typetext => 'host=HOSTUSBDEVICE',
 517     description => <<EODESCR,
 518 Configure an USB device (n is 0 to 4). This can be used to
 519 pass-through usb devices to the guest. HOSTUSBDEVICE syntax is:
 520
 521 'bus-port(.port)*' (decimal numbers) or
 522 'vendor_id:product_id' (hexadeciaml numbers)
 523
 524 You can use the 'lsusb -t' command to list existing usb devices.
 525
 526 Note: This option allows direct access to host hardware. So it is no longer possible to migrate such machines - use with special care.
 527
 528 EODESCR
 529 };
 530 PVE::JSONSchema::register_standard_option("pve-qm-usb", $usbdesc);
 531
 532 my $hostpcidesc = {
 533         optional => 1,
 534         type => 'string', format => 'pve-qm-hostpci',
 535         typetext => "HOSTPCIDEVICE",
 536         description => <<EODESCR,
 537 Map host pci devices. HOSTPCIDEVICE syntax is:
 538
 539 'bus:dev.func' (hexadecimal numbers)
 540
 541 You can us the 'lspci' command to list existing pci devices.
 542
 543 Note: This option allows direct access to host hardware. So it is no longer possible to migrate such machines - use with special care.
 544
 545 Experimental: user reported problems with this option.
 546 EODESCR
 547 };
 548 PVE::JSONSchema::register_standard_option("pve-qm-hostpci", $hostpcidesc);
 549
 550 my $serialdesc = {
 551         optional => 1,
 552         type => 'string',
 553         pattern => '/dev/ttyS\d+',
 554         description =>  <<EODESCR,
 555 Map host serial devices (n is 0 to 3).
 556
 557 Note: This option allows direct access to host hardware. So it is no longer possible to migrate such machines - use with special care.
 558
 559 Experimental: user reported problems with this option.
 560 EODESCR
 561 };
 562
 563 my $paralleldesc= {
 564         optional => 1,
 565         type => 'string',
 566         pattern => '/dev/parport\d+',
 567         description =>  <<EODESCR,
 568 Map host parallel devices (n is 0 to 2).
 569
 570 Note: This option allows direct access to host hardware. So it is no longer possible to migrate such machines - use with special care.
 571
 572 Experimental: user reported problems with this option.
 573 EODESCR
 574 };
 575
 576 for (my $i = 0; $i < $MAX_PARALLEL_PORTS; $i++)  {
 577     $confdesc->{"parallel$i"} = $paralleldesc;
 578 }
 579
 580 for (my $i = 0; $i < $MAX_SERIAL_PORTS; $i++)  {
 581     $confdesc->{"serial$i"} = $serialdesc;
 582 }
 583
 584 for (my $i = 0; $i < $MAX_HOSTPCI_DEVICES; $i++)  {
 585     $confdesc->{"hostpci$i"} = $hostpcidesc;
 586 }
 587
 588 for (my $i = 0; $i < $MAX_IDE_DISKS; $i++)  {
 589     $drivename_hash->{"ide$i"} = 1;
 590     $confdesc->{"ide$i"} = $idedesc;
 591 }
 592
 593 for (my $i = 0; $i < $MAX_SATA_DISKS; $i++)  {
 594     $drivename_hash->{"sata$i"} = 1;
 595     $confdesc->{"sata$i"} = $satadesc;
 596 }
 597
 598 for (my $i = 0; $i < $MAX_SCSI_DISKS; $i++)  {
 599     $drivename_hash->{"scsi$i"} = 1;
 600     $confdesc->{"scsi$i"} = $scsidesc ;
 601 }
 602
 603 for (my $i = 0; $i < $MAX_VIRTIO_DISKS; $i++)  {
 604     $drivename_hash->{"virtio$i"} = 1;
 605     $confdesc->{"virtio$i"} = $virtiodesc;
 606 }
 607
 608 for (my $i = 0; $i < $MAX_USB_DEVICES; $i++)  {
 609     $confdesc->{"usb$i"} = $usbdesc;
 610 }
 611
 612 my $unuseddesc = {
 613     optional => 1,
 614     type => 'string', format => 'pve-volume-id',
 615     description => "Reference to unused volumes.",
 616 };
 617
 618 for (my $i = 0; $i < $MAX_UNUSED_DISKS; $i++)  {
 619     $confdesc->{"unused$i"} = $unuseddesc;
 620 }
 621
 622 my $kvm_api_version = 0;
 623
 624 sub kvm_version {
 625
 626     return $kvm_api_version if $kvm_api_version;
 627
 628     my $fh = IO::File->new("</dev/kvm") ||
 629         return 0;
 630
 631     if (my $v = $fh->ioctl(KVM_GET_API_VERSION(), 0)) {
 632         $kvm_api_version = $v;
 633     }
 634
 635     $fh->close();
 636
 637     return  $kvm_api_version;
 638 }
 639
 640 my $kvm_user_version;
 641
 642 sub kvm_user_version {
 643
 644     return $kvm_user_version if $kvm_user_version;
 645
 646     $kvm_user_version = 'unknown';
 647
 648     my $tmp = `kvm -help 2>/dev/null`;
 649
 650     if ($tmp =~ m/^QEMU( PC)? emulator version (\d+\.\d+(\.\d+)?) /) {
 651         $kvm_user_version = $2;
 652     }
 653
 654     return $kvm_user_version;
 655
 656 }
 657
 658 my $kernel_has_vhost_net = -c '/dev/vhost-net';
 659
 660 sub disknames {
 661     # order is important - used to autoselect boot disk
 662     return ((map { "ide$_" } (0 .. ($MAX_IDE_DISKS - 1))),
 663             (map { "scsi$_" } (0 .. ($MAX_SCSI_DISKS - 1))),
 664             (map { "virtio$_" } (0 .. ($MAX_VIRTIO_DISKS - 1))),
 665             (map { "sata$_" } (0 .. ($MAX_SATA_DISKS - 1))));
 666 }
 667
 668 sub valid_drivename {
 669     my $dev = shift;
 670
 671     return defined($drivename_hash->{$dev});
 672 }
 673
 674 sub option_exists {
 675     my $key = shift;
 676     return defined($confdesc->{$key});
 677 }
 678
 679 sub nic_models {
 680     return $nic_model_list;
 681 }
 682
 683 sub os_list_description {
 684
 685     return {
 686         other => 'Other',
 687         wxp => 'Windows XP',
 688         w2k => 'Windows 2000',
 689         w2k3 =>, 'Windows 2003',
 690         w2k8 => 'Windows 2008',
 691         wvista => 'Windows Vista',
 692         win7 => 'Windows 7',
 693         l24 => 'Linux 2.4',
 694         l26 => 'Linux 2.6',
 695     };
 696 }
 697
 698 my $cdrom_path;
 699
 700 sub get_cdrom_path {
 701
 702     return  $cdrom_path if $cdrom_path;
 703
 704     return $cdrom_path = "/dev/cdrom" if -l "/dev/cdrom";
 705     return $cdrom_path = "/dev/cdrom1" if -l "/dev/cdrom1";
 706     return $cdrom_path = "/dev/cdrom2" if -l "/dev/cdrom2";
 707 }
 708
 709 sub get_iso_path {
 710     my ($storecfg, $vmid, $cdrom) = @_;
 711
 712     if ($cdrom eq 'cdrom') {
 713         return get_cdrom_path();
 714     } elsif ($cdrom eq 'none') {
 715         return '';
 716     } elsif ($cdrom =~ m|^/|) {
 717         return $cdrom;
 718     } else {
 719         return PVE::Storage::path($storecfg, $cdrom);
 720     }
 721 }
 722
 723 # try to convert old style file names to volume IDs
 724 sub filename_to_volume_id {
 725     my ($vmid, $file, $media) = @_;
 726
 727     if (!($file eq 'none' || $file eq 'cdrom' ||
 728           $file =~ m|^/dev/.+| || $file =~ m/^([^:]+):(.+)$/)) {
 729
 730         return undef if $file =~ m|/|;
 731
 732         if ($media && $media eq 'cdrom') {
 733             $file = "local:iso/$file";
 734         } else {
 735             $file = "local:$vmid/$file";
 736         }
 737     }
 738
 739     return $file;
 740 }
 741
 742 sub verify_media_type {
 743     my ($opt, $vtype, $media) = @_;
 744
 745     return if !$media;
 746
 747     my $etype;
 748     if ($media eq 'disk') {
 749         $etype = 'images';
 750     } elsif ($media eq 'cdrom') {
 751         $etype = 'iso';
 752     } else {
 753         die "internal error";
 754     }
 755
 756     return if ($vtype eq $etype);
 757
 758     raise_param_exc({ $opt => "unexpected media type ($vtype != $etype)" });
 759 }
 760
 761 sub cleanup_drive_path {
 762     my ($opt, $storecfg, $drive) = @_;
 763
 764     # try to convert filesystem paths to volume IDs
 765
 766     if (($drive->{file} !~ m/^(cdrom|none)$/) &&
 767         ($drive->{file} !~ m|^/dev/.+|) &&
 768         ($drive->{file} !~ m/^([^:]+):(.+)$/) &&
 769         ($drive->{file} !~ m/^\d+$/)) {
 770         my ($vtype, $volid) = PVE::Storage::path_to_volume_id($storecfg, $drive->{file});
 771         raise_param_exc({ $opt => "unable to associate path '$drive->{file}' to any storage"}) if !$vtype;
 772         $drive->{media} = 'cdrom' if !$drive->{media} && $vtype eq 'iso';
 773         verify_media_type($opt, $vtype, $drive->{media});
 774         $drive->{file} = $volid;
 775     }
 776
 777     $drive->{media} = 'cdrom' if !$drive->{media} && $drive->{file} =~ m/^(cdrom|none)$/;
 778 }
 779
 780 sub create_conf_nolock {
 781     my ($vmid, $settings) = @_;
 782
 783     my $filename = config_file($vmid);
 784
 785     die "configuration file '$filename' already exists\n" if -f $filename;
 786
 787     my $defaults = load_defaults();
 788
 789     $settings->{name} = "vm$vmid" if !$settings->{name};
 790     $settings->{memory} = $defaults->{memory} if !$settings->{memory};
 791
 792     my $data = '';
 793     foreach my $opt (keys %$settings) {
 794         next if !$confdesc->{$opt};
 795
 796         my $value = $settings->{$opt};
 797         next if !$value;
 798
 799         $data .= "$opt: $value\n";
 800     }
 801
 802     PVE::Tools::file_set_contents($filename, $data);
 803 }
 804
 805 my $parse_size = sub {
 806     my ($value) = @_;
 807
 808     return undef if $value !~ m/^(\d+(\.\d+)?)([KMG])?$/;
 809     my ($size, $unit) = ($1, $3);
 810     if ($unit) {
 811         if ($unit eq 'K') {
 812             $size = $size * 1024;
 813         } elsif ($unit eq 'M') {
 814             $size = $size * 1024 * 1024;
 815         } elsif ($unit eq 'G') {
 816             $size = $size * 1024 * 1024 * 1024;
 817         }
 818     }
 819     return int($size);
 820 };
 821
 822 my $format_size = sub {
 823     my ($size) = @_;
 824
 825     $size = int($size);
 826
 827     my $kb = int($size/1024);
 828     return $size if $kb*1024 != $size;
 829
 830     my $mb = int($kb/1024);
 831     return "${kb}K" if $mb*1024 != $kb;
 832
 833     my $gb = int($mb/1024);
 834     return "${mb}M" if $gb*1024 != $mb;
 835
 836     return "${gb}G";
 837 };
 838
 839 # ideX = [volume=]volume-id[,media=d][,cyls=c,heads=h,secs=s[,trans=t]]
 840 #        [,snapshot=on|off][,cache=on|off][,format=f][,backup=yes|no]
 841 #        [,rerror=ignore|report|stop][,werror=enospc|ignore|report|stop]
 842 #        [,aio=native|threads]
 843
 844 sub parse_drive {
 845     my ($key, $data) = @_;
 846
 847     my $res = {};
 848
 849     # $key may be undefined - used to verify JSON parameters
 850     if (!defined($key)) {
 851         $res->{interface} = 'unknown'; # should not harm when used to verify parameters
 852         $res->{index} = 0;
 853     } elsif ($key =~ m/^([^\d]+)(\d+)$/) {
 854         $res->{interface} = $1;
 855         $res->{index} = $2;
 856     } else {
 857         return undef;
 858     }
 859
 860     foreach my $p (split (/,/, $data)) {
 861         next if $p =~ m/^\s*$/;
 862
 863         if ($p =~ m/^(file|volume|cyls|heads|secs|trans|media|snapshot|cache|format|rerror|werror|backup|aio|bps|mbps|bps_rd|mbps_rd|bps_wr|mbps_wr|iops|iops_rd|iops_wr|size)=(.+)$/) {
 864             my ($k, $v) = ($1, $2);
 865
 866             $k = 'file' if $k eq 'volume';
 867
 868             return undef if defined $res->{$k};
 869
 870             if ($k eq 'bps' || $k eq 'bps_rd' || $k eq 'bps_wr') {
 871                 return undef if !$v || $v !~ m/^\d+/;
 872                 $k = "m$k";
 873                 $v = sprintf("%.3f", $v / (1024*1024));
 874             }
 875             $res->{$k} = $v;
 876         } else {
 877             if (!$res->{file} && $p !~ m/=/) {
 878                 $res->{file} = $p;
 879             } else {
 880                 return undef;
 881             }
 882         }
 883     }
 884
 885     return undef if !$res->{file};
 886
 887     return undef if $res->{cache} &&
 888         $res->{cache} !~ m/^(off|none|writethrough|writeback|unsafe|directsync)$/;
 889     return undef if $res->{snapshot} && $res->{snapshot} !~ m/^(on|off)$/;
 890     return undef if $res->{cyls} && $res->{cyls} !~ m/^\d+$/;
 891     return undef if $res->{heads} && $res->{heads} !~ m/^\d+$/;
 892     return undef if $res->{secs} && $res->{secs} !~ m/^\d+$/;
 893     return undef if $res->{media} && $res->{media} !~ m/^(disk|cdrom)$/;
 894     return undef if $res->{trans} && $res->{trans} !~ m/^(none|lba|auto)$/;
 895     return undef if $res->{format} && $res->{format} !~ m/^(raw|cow|qcow|qcow2|vmdk|cloop)$/;
 896     return undef if $res->{rerror} && $res->{rerror} !~ m/^(ignore|report|stop)$/;
 897     return undef if $res->{werror} && $res->{werror} !~ m/^(enospc|ignore|report|stop)$/;
 898     return undef if $res->{backup} && $res->{backup} !~ m/^(yes|no)$/;
 899     return undef if $res->{aio} && $res->{aio} !~ m/^(native|threads)$/;
 900
 901
 902     return undef if $res->{mbps_rd} && $res->{mbps};
 903     return undef if $res->{mbps_wr} && $res->{mbps};
 904
 905     return undef if $res->{mbps} && $res->{mbps} !~ m/^\d+(\.\d+)?$/;
 906     return undef if $res->{mbps_rd} && $res->{mbps_rd} !~ m/^\d+(\.\d+)?$/;
 907     return undef if $res->{mbps_wr} && $res->{mbps_wr} !~ m/^\d+(\.\d+)?$/;
 908
 909     return undef if $res->{iops_rd} && $res->{iops};
 910     return undef if $res->{iops_wr} && $res->{iops};
 911     return undef if $res->{iops} && $res->{iops} !~ m/^\d+$/;
 912     return undef if $res->{iops_rd} && $res->{iops_rd} !~ m/^\d+$/;
 913     return undef if $res->{iops_wr} && $res->{iops_wr} !~ m/^\d+$/;
 914
 915
 916     if ($res->{size}) {
 917         return undef if !defined($res->{size} = &$parse_size($res->{size}));
 918     }
 919
 920     if ($res->{media} && ($res->{media} eq 'cdrom')) {
 921         return undef if $res->{snapshot} || $res->{trans} || $res->{format};
 922         return undef if $res->{heads} || $res->{secs} || $res->{cyls};
 923         return undef if $res->{interface} eq 'virtio';
 924     }
 925
 926     # rerror does not work with scsi drives
 927     if ($res->{rerror}) {
 928         return undef if $res->{interface} eq 'scsi';
 929     }
 930
 931     return $res;
 932 }
 933
 934 my @qemu_drive_options = qw(heads secs cyls trans media format cache snapshot rerror werror aio iops iops_rd iops_wr);
 935
 936 sub print_drive {
 937     my ($vmid, $drive) = @_;
 938
 939     my $opts = '';
 940     foreach my $o (@qemu_drive_options, 'mbps', 'mbps_rd', 'mbps_wr', 'backup') {
 941         $opts .= ",$o=$drive->{$o}" if $drive->{$o};
 942     }
 943
 944     if ($drive->{size}) {
 945         $opts .= ",size=" . &$format_size($drive->{size});
 946     }
 947
 948     return "$drive->{file}$opts";
 949 }
 950
 951 sub scsi_inquiry {
 952     my($fh, $noerr) = @_;
 953
 954     my $SG_IO = 0x2285;
 955     my $SG_GET_VERSION_NUM = 0x2282;
 956
 957     my $versionbuf = "\x00" x 8;
 958     my $ret = ioctl($fh, $SG_GET_VERSION_NUM, $versionbuf);
 959     if (!$ret) {
 960         die "scsi ioctl SG_GET_VERSION_NUM failoed - $!\n" if !$noerr;
 961         return undef;
 962     }
 963     my $version = unpack("I", $versionbuf);
 964     if ($version < 30000) {
 965         die "scsi generic interface too old\n"  if !$noerr;
 966         return undef;
 967     }
 968
 969     my $buf = "\x00" x 36;
 970     my $sensebuf = "\x00" x 8;
 971     my $cmd = pack("C x3 C x11", 0x12, 36);
 972
 973     # see /usr/include/scsi/sg.h
 974     my $sg_io_hdr_t = "i i C C s I P P P I I i P C C C C S S i I I";
 975
 976     my $packet = pack($sg_io_hdr_t, ord('S'), -3, length($cmd),
 977                       length($sensebuf), 0, length($buf), $buf,
 978                       $cmd, $sensebuf, 6000);
 979
 980     $ret = ioctl($fh, $SG_IO, $packet);
 981     if (!$ret) {
 982         die "scsi ioctl SG_IO failed - $!\n" if !$noerr;
 983         return undef;
 984     }
 985
 986     my @res = unpack($sg_io_hdr_t, $packet);
 987     if ($res[17] || $res[18]) {
 988         die "scsi ioctl SG_IO status error - $!\n" if !$noerr;
 989         return undef;
 990     }
 991
 992     my $res = {};
 993     ($res->{device}, $res->{removable}, $res->{venodor},
 994      $res->{product}, $res->{revision}) = unpack("C C x6 A8 A16 A4", $buf);
 995
 996     return $res;
 997 }
 998
 999 sub path_is_scsi {
1000     my ($path) = @_;
1001
1002     my $fh = IO::File->new("+<$path") || return undef;
1003     my $res = scsi_inquiry($fh, 1);
1004     close($fh);
1005
1006     return $res;
1007 }
1008
1009 sub print_drivedevice_full {
1010     my ($storecfg, $conf, $vmid, $drive, $bridges) = @_;
1011
1012     my $device = '';
1013     my $maxdev = 0;
1014
1015     if ($drive->{interface} eq 'virtio') {
1016         my $pciaddr = print_pci_addr("$drive->{interface}$drive->{index}", $bridges);
1017         $device = "virtio-blk-pci,drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}$pciaddr";
1018     } elsif ($drive->{interface} eq 'scsi') {
1019         $maxdev = ($conf->{scsihw} && $conf->{scsihw} ne 'lsi') ? 256 : 7;
1020         my $controller = int($drive->{index} / $maxdev);
1021         my $unit = $drive->{index} % $maxdev;
1022         my $devicetype = 'hd';
1023         my $path = '';
1024         if (drive_is_cdrom($drive)) {
1025               $devicetype = 'cd';
1026           } else {
1027               if ($drive->{file} =~ m|^/|) {
1028                   $path = $drive->{file};
1029               } else {
1030                   $path = PVE::Storage::path($storecfg, $drive->{file});
1031               }
1032
1033               if($path =~ m/^iscsi\:\/\//){
1034                  $devicetype = 'generic';
1035               }
1036               else {
1037                  $devicetype = 'block' if path_is_scsi($path);
1038               }
1039          }
1040
1041         if (!$conf->{scsihw} || $conf->{scsihw} eq 'lsi'){
1042             $device = "scsi-$devicetype,bus=scsihw$controller.0,scsi-id=$unit,drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}" if !$conf->{scsihw} || $conf->{scsihw} eq 'lsi';
1043         } else {
1044             $device = "scsi-$devicetype,bus=scsihw$controller.0,channel=0,scsi-id=0,lun=$drive->{index},drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}";
1045         }
1046
1047     } elsif ($drive->{interface} eq 'ide'){
1048         $maxdev = 2;
1049         my $controller = int($drive->{index} / $maxdev);
1050         my $unit = $drive->{index} % $maxdev;
1051         my $devicetype = ($drive->{media} && $drive->{media} eq 'cdrom') ? "cd" : "hd";
1052
1053         $device = "ide-$devicetype,bus=ide.$controller,unit=$unit,drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}";
1054     } elsif ($drive->{interface} eq 'sata'){
1055         my $controller = int($drive->{index} / $MAX_SATA_DISKS);
1056         my $unit = $drive->{index} % $MAX_SATA_DISKS;
1057         $device = "ide-drive,bus=ahci$controller.$unit,drive=drive-$drive->{interface}$drive->{index},id=$drive->{interface}$drive->{index}";
1058     } elsif ($drive->{interface} eq 'usb') {
1059         die "implement me";
1060         #  -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
1061     } else {
1062         die "unsupported interface type";
1063     }
1064
1065     $device .= ",bootindex=$drive->{bootindex}" if $drive->{bootindex};
1066
1067     return $device;
1068 }
1069
1070 sub print_drive_full {
1071     my ($storecfg, $vmid, $drive) = @_;
1072
1073     my $opts = '';
1074     foreach my $o (@qemu_drive_options) {
1075         next if $o eq 'bootindex';
1076         $opts .= ",$o=$drive->{$o}" if $drive->{$o};
1077     }
1078
1079     foreach my $o (qw(bps bps_rd bps_wr)) {
1080         my $v = $drive->{"m$o"};
1081         $opts .= ",$o=" . int($v*1024*1024) if $v;
1082     }
1083
1084     # use linux-aio by default (qemu default is threads)
1085     $opts .= ",aio=native" if !$drive->{aio};
1086
1087     my $path;
1088     my $volid = $drive->{file};
1089     if (drive_is_cdrom($drive)) {
1090         $path = get_iso_path($storecfg, $vmid, $volid);
1091     } else {
1092         if ($volid =~ m|^/|) {
1093             $path = $volid;
1094         } else {
1095             $path = PVE::Storage::path($storecfg, $volid);
1096         }
1097         if (!$drive->{cache} && ($path =~ m|^/dev/| || $path =~ m|\.raw$|)) {
1098             $opts .= ",cache=none";
1099         }
1100     }
1101
1102     my $pathinfo = $path ? "file=$path," : '';
1103
1104     return "${pathinfo}if=none,id=drive-$drive->{interface}$drive->{index}$opts";
1105 }
1106
1107 sub print_netdevice_full {
1108     my ($vmid, $conf, $net, $netid, $bridges) = @_;
1109
1110     my $bootorder = $conf->{boot} || $confdesc->{boot}->{default};
1111
1112     my $device = $net->{model};
1113     if ($net->{model} eq 'virtio') {
1114          $device = 'virtio-net-pci';
1115      };
1116
1117     # qemu > 0.15 always try to boot from network - we disable that by
1118     # not loading the pxe rom file
1119     my $extra = ($bootorder !~ m/n/) ? "romfile=," : '';
1120     my $pciaddr = print_pci_addr("$netid", $bridges);
1121     my $tmpstr = "$device,${extra}mac=$net->{macaddr},netdev=$netid$pciaddr,id=$netid";
1122     $tmpstr .= ",bootindex=$net->{bootindex}" if $net->{bootindex} ;
1123     return $tmpstr;
1124 }
1125
1126 sub print_netdev_full {
1127     my ($vmid, $conf, $net, $netid) = @_;
1128
1129     my $i = '';
1130     if ($netid =~ m/^net(\d+)$/) {
1131         $i = int($1);
1132     }
1133
1134     die "got strange net id '$i'\n" if $i >= ${MAX_NETS};
1135
1136     my $ifname = "tap${vmid}i$i";
1137
1138     # kvm uses TUNSETIFF ioctl, and that limits ifname length
1139     die "interface name '$ifname' is too long (max 15 character)\n"
1140         if length($ifname) >= 16;
1141
1142     my $vhostparam = '';
1143     $vhostparam = ',vhost=on' if $kernel_has_vhost_net && $net->{model} eq 'virtio';
1144
1145     my $vmname = $conf->{name} || "vm$vmid";
1146
1147     if ($net->{bridge}) {
1148         return "type=tap,id=$netid,ifname=${ifname},script=/var/lib/qemu-server/pve-bridge$vhostparam";
1149     } else {
1150         return "type=user,id=$netid,hostname=$vmname";
1151     }
1152 }
1153
1154 sub drive_is_cdrom {
1155     my ($drive) = @_;
1156
1157     return $drive && $drive->{media} && ($drive->{media} eq 'cdrom');
1158
1159 }
1160
1161 sub parse_hostpci {
1162     my ($value) = @_;
1163
1164     return undef if !$value;
1165
1166     my $res = {};
1167
1168     if ($value =~ m/^[a-f0-9]{2}:[a-f0-9]{2}\.[a-f0-9]$/) {
1169        $res->{pciid} = $value;
1170     } else {
1171        return undef;
1172     }
1173
1174     return $res;
1175 }
1176
1177 # netX: e1000=XX:XX:XX:XX:XX:XX,bridge=vmbr0,rate=<mbps>
1178 sub parse_net {
1179     my ($data) = @_;
1180
1181     my $res = {};
1182
1183     foreach my $kvp (split(/,/, $data)) {
1184
1185         if ($kvp =~ m/^(ne2k_pci|e1000|rtl8139|pcnet|virtio|ne2k_isa|i82551|i82557b|i82559er)(=([0-9a-f]{2}(:[0-9a-f]{2}){5}))?$/i) {
1186             my $model = lc($1);
1187             my $mac = uc($3) || PVE::Tools::random_ether_addr();
1188             $res->{model} = $model;
1189             $res->{macaddr} = $mac;
1190         } elsif ($kvp =~ m/^bridge=(\S+)$/) {
1191             $res->{bridge} = $1;
1192         } elsif ($kvp =~ m/^rate=(\d+(\.\d+)?)$/) {
1193             $res->{rate} = $1;
1194         } elsif ($kvp =~ m/^tag=(\d+)$/) {
1195             $res->{tag} = $1;
1196         } else {
1197             return undef;
1198         }
1199
1200     }
1201
1202     return undef if !$res->{model};
1203
1204     return $res;
1205 }
1206
1207 sub print_net {
1208     my $net = shift;
1209
1210     my $res = "$net->{model}";
1211     $res .= "=$net->{macaddr}" if $net->{macaddr};
1212     $res .= ",bridge=$net->{bridge}" if $net->{bridge};
1213     $res .= ",rate=$net->{rate}" if $net->{rate};
1214     $res .= ",tag=$net->{tag}" if $net->{tag};
1215
1216     return $res;
1217 }
1218
1219 sub add_random_macs {
1220     my ($settings) = @_;
1221
1222     foreach my $opt (keys %$settings) {
1223         next if $opt !~ m/^net(\d+)$/;
1224         my $net = parse_net($settings->{$opt});
1225         next if !$net;
1226         $settings->{$opt} = print_net($net);
1227     }
1228 }
1229
1230 sub add_unused_volume {
1231     my ($config, $volid) = @_;
1232
1233     my $key;
1234     for (my $ind = $MAX_UNUSED_DISKS - 1; $ind >= 0; $ind--) {
1235         my $test = "unused$ind";
1236         if (my $vid = $config->{$test}) {
1237             return if $vid eq $volid; # do not add duplicates
1238         } else {
1239             $key = $test;
1240         }
1241     }
1242
1243     die "To many unused volume - please delete them first.\n" if !$key;
1244
1245     $config->{$key} = $volid;
1246
1247     return $key;
1248 }
1249
1250 # fixme: remove all thos $noerr parameters?
1251
1252 PVE::JSONSchema::register_format('pve-qm-bootdisk', \&verify_bootdisk);
1253 sub verify_bootdisk {
1254     my ($value, $noerr) = @_;
1255
1256     return $value if valid_drivename($value);
1257
1258     return undef if $noerr;
1259
1260     die "invalid boot disk '$value'\n";
1261 }
1262
1263 PVE::JSONSchema::register_format('pve-qm-net', \&verify_net);
1264 sub verify_net {
1265     my ($value, $noerr) = @_;
1266
1267     return $value if parse_net($value);
1268
1269     return undef if $noerr;
1270
1271     die "unable to parse network options\n";
1272 }
1273
1274 PVE::JSONSchema::register_format('pve-qm-drive', \&verify_drive);
1275 sub verify_drive {
1276     my ($value, $noerr) = @_;
1277
1278     return $value if parse_drive(undef, $value);
1279
1280     return undef if $noerr;
1281
1282     die "unable to parse drive options\n";
1283 }
1284
1285 PVE::JSONSchema::register_format('pve-qm-hostpci', \&verify_hostpci);
1286 sub verify_hostpci {
1287     my ($value, $noerr) = @_;
1288
1289     return $value if parse_hostpci($value);
1290
1291     return undef if $noerr;
1292
1293     die "unable to parse pci id\n";
1294 }
1295
1296 PVE::JSONSchema::register_format('pve-qm-watchdog', \&verify_watchdog);
1297 sub verify_watchdog {
1298     my ($value, $noerr) = @_;
1299
1300     return $value if parse_watchdog($value);
1301
1302     return undef if $noerr;
1303
1304     die "unable to parse watchdog options\n";
1305 }
1306
1307 sub parse_watchdog {
1308     my ($value) = @_;
1309
1310     return undef if !$value;
1311
1312     my $res = {};
1313
1314     foreach my $p (split(/,/, $value)) {
1315         next if $p =~ m/^\s*$/;
1316
1317         if ($p =~ m/^(model=)?(i6300esb|ib700)$/) {
1318             $res->{model} = $2;
1319         } elsif ($p =~ m/^(action=)?(reset|shutdown|poweroff|pause|debug|none)$/) {
1320             $res->{action} = $2;
1321         } else {
1322             return undef;
1323         }
1324     }
1325
1326     return $res;
1327 }
1328
1329 PVE::JSONSchema::register_format('pve-qm-startup', \&verify_startup);
1330 sub verify_startup {
1331     my ($value, $noerr) = @_;
1332
1333     return $value if parse_startup($value);
1334
1335     return undef if $noerr;
1336
1337     die "unable to parse startup options\n";
1338 }
1339
1340 sub parse_startup {
1341     my ($value) = @_;
1342
1343     return undef if !$value;
1344
1345     my $res = {};
1346
1347     foreach my $p (split(/,/, $value)) {
1348         next if $p =~ m/^\s*$/;
1349
1350         if ($p =~ m/^(order=)?(\d+)$/) {
1351             $res->{order} = $2;
1352         } elsif ($p =~ m/^up=(\d+)$/) {
1353             $res->{up} = $1;
1354         } elsif ($p =~ m/^down=(\d+)$/) {
1355             $res->{down} = $1;
1356         } else {
1357             return undef;
1358         }
1359     }
1360
1361     return $res;
1362 }
1363
1364 sub parse_usb_device {
1365     my ($value) = @_;
1366
1367     return undef if !$value;
1368
1369     my @dl = split(/,/, $value);
1370     my $found;
1371
1372     my $res = {};
1373     foreach my $v (@dl) {
1374         if ($v =~ m/^host=(0x)?([0-9A-Fa-f]{4}):(0x)?([0-9A-Fa-f]{4})$/) {
1375             $found = 1;
1376             $res->{vendorid} = $2;
1377             $res->{productid} = $4;
1378         } elsif ($v =~ m/^host=(\d+)\-(\d+(\.\d+)*)$/) {
1379             $found = 1;
1380             $res->{hostbus} = $1;
1381             $res->{hostport} = $2;
1382         } else {
1383             return undef;
1384         }
1385     }
1386     return undef if !$found;
1387
1388     return $res;
1389 }
1390
1391 PVE::JSONSchema::register_format('pve-qm-usb-device', \&verify_usb_device);
1392 sub verify_usb_device {
1393     my ($value, $noerr) = @_;
1394
1395     return $value if parse_usb_device($value);
1396
1397     return undef if $noerr;
1398
1399     die "unable to parse usb device\n";
1400 }
1401
1402 # add JSON properties for create and set function
1403 sub json_config_properties {
1404     my $prop = shift;
1405
1406     foreach my $opt (keys %$confdesc) {
1407         next if $opt eq 'parent' || $opt eq 'snaptime' || $opt eq 'vmstate';
1408         $prop->{$opt} = $confdesc->{$opt};
1409     }
1410
1411     return $prop;
1412 }
1413
1414 sub check_type {
1415     my ($key, $value) = @_;
1416
1417     die "unknown setting '$key'\n" if !$confdesc->{$key};
1418
1419     my $type = $confdesc->{$key}->{type};
1420
1421     if (!defined($value)) {
1422         die "got undefined value\n";
1423     }
1424
1425     if ($value =~ m/[\n\r]/) {
1426         die "property contains a line feed\n";
1427     }
1428
1429     if ($type eq 'boolean') {
1430         return 1 if ($value eq '1') || ($value =~ m/^(on|yes|true)$/i);
1431         return 0 if ($value eq '0') || ($value =~ m/^(off|no|false)$/i);
1432         die "type check ('boolean') failed - got '$value'\n";
1433     } elsif ($type eq 'integer') {
1434         return int($1) if $value =~ m/^(\d+)$/;
1435         die "type check ('integer') failed - got '$value'\n";
1436     } elsif ($type eq 'string') {
1437         if (my $fmt = $confdesc->{$key}->{format}) {
1438             if ($fmt eq 'pve-qm-drive') {
1439                 # special case - we need to pass $key to parse_drive()
1440                 my $drive = parse_drive($key, $value);
1441                 return $value if $drive;
1442                 die "unable to parse drive options\n";
1443             }
1444             PVE::JSONSchema::check_format($fmt, $value);
1445             return $value;
1446         }
1447         $value =~ s/^\"(.*)\"$/$1/;
1448         return $value;
1449     } else {
1450         die "internal error"
1451     }
1452 }
1453
1454 sub lock_config_full {
1455     my ($vmid, $timeout, $code, @param) = @_;
1456
1457     my $filename = config_file_lock($vmid);
1458
1459     my $res = lock_file($filename, $timeout, $code, @param);
1460
1461     die $@ if $@;
1462
1463     return $res;
1464 }
1465
1466 sub lock_config {
1467     my ($vmid, $code, @param) = @_;
1468
1469     return lock_config_full($vmid, 10, $code, @param);
1470 }
1471
1472 sub cfs_config_path {
1473     my ($vmid, $node) = @_;
1474
1475     $node = $nodename if !$node;
1476     return "nodes/$node/qemu-server/$vmid.conf";
1477 }
1478
1479 sub check_iommu_support{
1480     #fixme : need to check IOMMU support
1481     #http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM
1482
1483     my $iommu=1;
1484     return $iommu;
1485
1486 }
1487
1488 sub config_file {
1489     my ($vmid, $node) = @_;
1490
1491     my $cfspath = cfs_config_path($vmid, $node);
1492     return "/etc/pve/$cfspath";
1493 }
1494
1495 sub config_file_lock {
1496     my ($vmid) = @_;
1497
1498     return "$lock_dir/lock-$vmid.conf";
1499 }
1500
1501 sub touch_config {
1502     my ($vmid) = @_;
1503
1504     my $conf = config_file($vmid);
1505     utime undef, undef, $conf;
1506 }
1507
1508 sub destroy_vm {
1509     my ($storecfg, $vmid, $keep_empty_config) = @_;
1510
1511     my $conffile = config_file($vmid);
1512
1513     my $conf = load_config($vmid);
1514
1515     check_lock($conf);
1516
1517     # only remove disks owned by this VM
1518     foreach_drive($conf, sub {
1519         my ($ds, $drive) = @_;
1520
1521         return if drive_is_cdrom($drive);
1522
1523         my $volid = $drive->{file};
1524         return if !$volid || $volid =~ m|^/|;
1525
1526         my ($path, $owner) = PVE::Storage::path($storecfg, $volid);
1527         return if !$path || !$owner || ($owner != $vmid);
1528
1529         PVE::Storage::vdisk_free($storecfg, $volid);
1530     });
1531
1532     if ($keep_empty_config) {
1533         PVE::Tools::file_set_contents($conffile, "memory: 128\n");
1534     } else {
1535         unlink $conffile;
1536     }
1537
1538     # also remove unused disk
1539     eval {
1540         my $dl = PVE::Storage::vdisk_list($storecfg, undef, $vmid);
1541
1542         eval {
1543             PVE::Storage::foreach_volid($dl, sub {
1544                 my ($volid, $sid, $volname, $d) = @_;
1545                 PVE::Storage::vdisk_free($storecfg, $volid);
1546             });
1547         };
1548         warn $@ if $@;
1549
1550     };
1551     warn $@ if $@;
1552 }
1553
1554 sub load_config {
1555     my ($vmid, $node) = @_;
1556
1557     my $cfspath = cfs_config_path($vmid, $node);
1558
1559     my $conf = PVE::Cluster::cfs_read_file($cfspath);
1560
1561     die "no such VM ('$vmid')\n" if !defined($conf);
1562
1563     return $conf;
1564 }
1565
1566 sub parse_vm_config {
1567     my ($filename, $raw) = @_;
1568
1569     return undef if !defined($raw);
1570
1571     my $res = {
1572         digest => Digest::SHA::sha1_hex($raw),
1573         snapshots => {},
1574     };
1575
1576     $filename =~ m|/qemu-server/(\d+)\.conf$|
1577         || die "got strange filename '$filename'";
1578
1579     my $vmid = $1;
1580
1581     my $conf = $res;
1582     my $descr = '';
1583
1584     my @lines = split(/\n/, $raw);
1585     foreach my $line (@lines) {
1586         next if $line =~ m/^\s*$/;
1587
1588         if ($line =~ m/^\[([a-z][a-z0-9_\-]+)\]\s*$/i) {
1589             my $snapname = $1;
1590             $conf->{description} = $descr if $descr;
1591             $descr = '';
1592             $conf = $res->{snapshots}->{$snapname} = {};
1593             next;
1594         }
1595
1596         if ($line =~ m/^\#(.*)\s*$/) {
1597             $descr .= PVE::Tools::decode_text($1) . "\n";
1598             next;
1599         }
1600
1601         if ($line =~ m/^(description):\s*(.*\S)\s*$/) {
1602             $descr .= PVE::Tools::decode_text($2);
1603         } elsif ($line =~ m/snapstate:\s*(prepare|delete)\s*$/) {
1604             $conf->{snapstate} = $1;
1605         } elsif ($line =~ m/^(args):\s*(.*\S)\s*$/) {
1606             my $key = $1;
1607             my $value = $2;
1608             $conf->{$key} = $value;
1609         } elsif ($line =~ m/^([a-z][a-z_]*\d*):\s*(\S+)\s*$/) {
1610             my $key = $1;
1611             my $value = $2;
1612             eval { $value = check_type($key, $value); };
1613             if ($@) {
1614                 warn "vm $vmid - unable to parse value of '$key' - $@";
1615             } else {
1616                 my $fmt = $confdesc->{$key}->{format};
1617                 if ($fmt && $fmt eq 'pve-qm-drive') {
1618                     my $v = parse_drive($key, $value);
1619                     if (my $volid = filename_to_volume_id($vmid, $v->{file}, $v->{media})) {
1620                         $v->{file} = $volid;
1621                         $value = print_drive($vmid, $v);
1622                     } else {
1623                         warn "vm $vmid - unable to parse value of '$key'\n";
1624                         next;
1625                     }
1626                 }
1627
1628                 if ($key eq 'cdrom') {
1629                     $conf->{ide2} = $value;
1630                 } else {
1631                     $conf->{$key} = $value;
1632                 }
1633             }
1634         }
1635     }
1636
1637     $conf->{description} = $descr if $descr;
1638
1639     delete $res->{snapstate}; # just to be sure
1640
1641     return $res;
1642 }
1643
1644 sub write_vm_config {
1645     my ($filename, $conf) = @_;
1646
1647     delete $conf->{snapstate}; # just to be sure
1648
1649     if ($conf->{cdrom}) {
1650         die "option ide2 conflicts with cdrom\n" if $conf->{ide2};
1651         $conf->{ide2} = $conf->{cdrom};
1652         delete $conf->{cdrom};
1653     }
1654
1655     # we do not use 'smp' any longer
1656     if ($conf->{sockets}) {
1657         delete $conf->{smp};
1658     } elsif ($conf->{smp}) {
1659         $conf->{sockets} = $conf->{smp};
1660         delete $conf->{cores};
1661         delete $conf->{smp};
1662     }
1663
1664     my $used_volids = {};
1665
1666     my $cleanup_config = sub {
1667         my ($cref) = @_;
1668
1669         foreach my $key (keys %$cref) {
1670             next if $key eq 'digest' || $key eq 'description' || $key eq 'snapshots' ||
1671                 $key eq 'snapstate';
1672             my $value = $cref->{$key};
1673             eval { $value = check_type($key, $value); };
1674             die "unable to parse value of '$key' - $@" if $@;
1675
1676             $cref->{$key} = $value;
1677
1678             if (valid_drivename($key)) {
1679                 my $drive = PVE::QemuServer::parse_drive($key, $value);
1680                 $used_volids->{$drive->{file}} = 1 if $drive && $drive->{file};
1681             }
1682         }
1683     };
1684
1685     &$cleanup_config($conf);
1686     foreach my $snapname (keys %{$conf->{snapshots}}) {
1687         &$cleanup_config($conf->{snapshots}->{$snapname});
1688     }
1689
1690     # remove 'unusedX' settings if we re-add a volume
1691     foreach my $key (keys %$conf) {
1692         my $value = $conf->{$key};
1693         if ($key =~ m/^unused/ && $used_volids->{$value}) {
1694             delete $conf->{$key};
1695         }
1696     }
1697
1698     my $generate_raw_config = sub {
1699         my ($conf) = @_;
1700
1701         my $raw = '';
1702
1703         # add description as comment to top of file
1704         my $descr = $conf->{description} || '';
1705         foreach my $cl (split(/\n/, $descr)) {
1706             $raw .= '#' .  PVE::Tools::encode_text($cl) . "\n";
1707         }
1708
1709         foreach my $key (sort keys %$conf) {
1710             next if $key eq 'digest' || $key eq 'description' || $key eq 'snapshots';
1711             $raw .= "$key: $conf->{$key}\n";
1712         }
1713         return $raw;
1714     };
1715
1716     my $raw = &$generate_raw_config($conf);
1717     foreach my $snapname (sort keys %{$conf->{snapshots}}) {
1718         $raw .= "\n[$snapname]\n";
1719         $raw .= &$generate_raw_config($conf->{snapshots}->{$snapname});
1720     }
1721
1722     return $raw;
1723 }
1724
1725 sub update_config_nolock {
1726     my ($vmid, $conf, $skiplock) = @_;
1727
1728     check_lock($conf) if !$skiplock;
1729
1730     my $cfspath = cfs_config_path($vmid);
1731
1732     PVE::Cluster::cfs_write_file($cfspath, $conf);
1733 }
1734
1735 sub update_config {
1736     my ($vmid, $conf, $skiplock) = @_;
1737
1738     lock_config($vmid, &update_config_nolock, $conf, $skiplock);
1739 }
1740
1741 sub load_defaults {
1742
1743     my $res = {};
1744
1745     # we use static defaults from our JSON schema configuration
1746     foreach my $key (keys %$confdesc) {
1747         if (defined(my $default = $confdesc->{$key}->{default})) {
1748             $res->{$key} = $default;
1749         }
1750     }
1751
1752     my $conf = PVE::Cluster::cfs_read_file('datacenter.cfg');
1753     $res->{keyboard} = $conf->{keyboard} if $conf->{keyboard};
1754
1755     return $res;
1756 }
1757
1758 sub config_list {
1759     my $vmlist = PVE::Cluster::get_vmlist();
1760     my $res = {};
1761     return $res if !$vmlist || !$vmlist->{ids};
1762     my $ids = $vmlist->{ids};
1763
1764     foreach my $vmid (keys %$ids) {
1765         my $d = $ids->{$vmid};
1766         next if !$d->{node} || $d->{node} ne $nodename;
1767         next if !$d->{type} || $d->{type} ne 'qemu';
1768         $res->{$vmid}->{exists} = 1;
1769     }
1770     return $res;
1771 }
1772
1773 # test if VM uses local resources (to prevent migration)
1774 sub check_local_resources {
1775     my ($conf, $noerr) = @_;
1776
1777     my $loc_res = 0;
1778
1779     $loc_res = 1 if $conf->{hostusb}; # old syntax
1780     $loc_res = 1 if $conf->{hostpci}; # old syntax
1781
1782     foreach my $k (keys %$conf) {
1783         $loc_res = 1 if $k =~ m/^(usb|hostpci|serial|parallel)\d+$/;
1784     }
1785
1786     die "VM uses local resources\n" if $loc_res && !$noerr;
1787
1788     return $loc_res;
1789 }
1790
1791 # check is used storages are available on all nodes (use by migrate)
1792 sub check_storage_availability {
1793     my ($storecfg, $conf, $node) = @_;
1794
1795     foreach_drive($conf, sub {
1796         my ($ds, $drive) = @_;
1797
1798         my $volid = $drive->{file};
1799         return if !$volid;
1800
1801         my ($sid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
1802         return if !$sid;
1803
1804         # check if storage is available on both nodes
1805         my $scfg = PVE::Storage::storage_check_node($storecfg, $sid);
1806         PVE::Storage::storage_check_node($storecfg, $sid, $node);
1807    });
1808 }
1809
1810 sub check_lock {
1811     my ($conf) = @_;
1812
1813     die "VM is locked ($conf->{lock})\n" if $conf->{lock};
1814 }
1815
1816 sub check_cmdline {
1817     my ($pidfile, $pid) = @_;
1818
1819     my $fh = IO::File->new("/proc/$pid/cmdline", "r");
1820     if (defined($fh)) {
1821         my $line = <$fh>;
1822         $fh->close;
1823         return undef if !$line;
1824         my @param = split(/\0/, $line);
1825
1826         my $cmd = $param[0];
1827         return if !$cmd || ($cmd !~ m|kvm$|);
1828
1829         for (my $i = 0; $i < scalar (@param); $i++) {
1830             my $p = $param[$i];
1831             next if !$p;
1832             if (($p eq '-pidfile') || ($p eq '--pidfile')) {
1833                 my $p = $param[$i+1];
1834                 return 1 if $p && ($p eq $pidfile);
1835                 return undef;
1836             }
1837         }
1838     }
1839     return undef;
1840 }
1841
1842 sub check_running {
1843     my ($vmid, $nocheck, $node) = @_;
1844
1845     my $filename = config_file($vmid, $node);
1846
1847     die "unable to find configuration file for VM $vmid - no such machine\n"
1848         if !$nocheck && ! -f $filename;
1849
1850     my $pidfile = pidfile_name($vmid);
1851
1852     if (my $fd = IO::File->new("<$pidfile")) {
1853         my $st = stat($fd);
1854         my $line = <$fd>;
1855         close($fd);
1856
1857         my $mtime = $st->mtime;
1858         if ($mtime > time()) {
1859             warn "file '$filename' modified in future\n";
1860         }
1861
1862         if ($line =~ m/^(\d+)$/) {
1863             my $pid = $1;
1864             if (check_cmdline($pidfile, $pid)) {
1865                 if (my $pinfo = PVE::ProcFSTools::check_process_running($pid)) {
1866                     return $pid;
1867                 }
1868             }
1869         }
1870     }
1871
1872     return undef;
1873 }
1874
1875 sub vzlist {
1876
1877     my $vzlist = config_list();
1878
1879     my $fd = IO::Dir->new($var_run_tmpdir) || return $vzlist;
1880
1881     while (defined(my $de = $fd->read)) {
1882         next if $de !~ m/^(\d+)\.pid$/;
1883         my $vmid = $1;
1884         next if !defined($vzlist->{$vmid});
1885         if (my $pid = check_running($vmid)) {
1886             $vzlist->{$vmid}->{pid} = $pid;
1887         }
1888     }
1889
1890     return $vzlist;
1891 }
1892
1893 sub disksize {
1894     my ($storecfg, $conf) = @_;
1895
1896     my $bootdisk = $conf->{bootdisk};
1897     return undef if !$bootdisk;
1898     return undef if !valid_drivename($bootdisk);
1899
1900     return undef if !$conf->{$bootdisk};
1901
1902     my $drive = parse_drive($bootdisk, $conf->{$bootdisk});
1903     return undef if !defined($drive);
1904
1905     return undef if drive_is_cdrom($drive);
1906
1907     my $volid = $drive->{file};
1908     return undef if !$volid;
1909
1910     return $drive->{size};
1911 }
1912
1913 my $last_proc_pid_stat;
1914
1915 # get VM status information
1916 # This must be fast and should not block ($full == false)
1917 # We only query KVM using QMP if $full == true (this can be slow)
1918 sub vmstatus {
1919     my ($opt_vmid, $full) = @_;
1920
1921     my $res = {};
1922
1923     my $storecfg = PVE::Storage::config();
1924
1925     my $list = vzlist();
1926     my ($uptime) = PVE::ProcFSTools::read_proc_uptime(1);
1927
1928     my $cpucount = $cpuinfo->{cpus} || 1;
1929
1930     foreach my $vmid (keys %$list) {
1931         next if $opt_vmid && ($vmid ne $opt_vmid);
1932
1933         my $cfspath = cfs_config_path($vmid);
1934         my $conf = PVE::Cluster::cfs_read_file($cfspath) || {};
1935
1936         my $d = {};
1937         $d->{pid} = $list->{$vmid}->{pid};
1938
1939         # fixme: better status?
1940         $d->{status} = $list->{$vmid}->{pid} ? 'running' : 'stopped';
1941
1942         my $size = disksize($storecfg, $conf);
1943         if (defined($size)) {
1944             $d->{disk} = 0; # no info available
1945             $d->{maxdisk} = $size;
1946         } else {
1947             $d->{disk} = 0;
1948             $d->{maxdisk} = 0;
1949         }
1950
1951         $d->{cpus} = ($conf->{sockets} || 1) * ($conf->{cores} || 1);
1952         $d->{cpus} = $cpucount if $d->{cpus} > $cpucount;
1953
1954         $d->{name} = $conf->{name} || "VM $vmid";
1955         $d->{maxmem} = $conf->{memory} ? $conf->{memory}*(1024*1024) : 0;
1956
1957         $d->{uptime} = 0;
1958         $d->{cpu} = 0;
1959         $d->{mem} = 0;
1960
1961         $d->{netout} = 0;
1962         $d->{netin} = 0;
1963
1964         $d->{diskread} = 0;
1965         $d->{diskwrite} = 0;
1966
1967         $res->{$vmid} = $d;
1968     }
1969
1970     my $netdev = PVE::ProcFSTools::read_proc_net_dev();
1971     foreach my $dev (keys %$netdev) {
1972         next if $dev !~ m/^tap([1-9]\d*)i/;
1973         my $vmid = $1;
1974         my $d = $res->{$vmid};
1975         next if !$d;
1976
1977         $d->{netout} += $netdev->{$dev}->{receive};
1978         $d->{netin} += $netdev->{$dev}->{transmit};
1979     }
1980
1981     my $ctime = gettimeofday;
1982
1983     foreach my $vmid (keys %$list) {
1984
1985         my $d = $res->{$vmid};
1986         my $pid = $d->{pid};
1987         next if !$pid;
1988
1989         my $pstat = PVE::ProcFSTools::read_proc_pid_stat($pid);
1990         next if !$pstat; # not running
1991
1992         my $used = $pstat->{utime} + $pstat->{stime};
1993
1994         $d->{uptime} = int(($uptime - $pstat->{starttime})/$cpuinfo->{user_hz});
1995
1996         if ($pstat->{vsize}) {
1997             $d->{mem} = int(($pstat->{rss}/$pstat->{vsize})*$d->{maxmem});
1998         }
1999
2000         my $old = $last_proc_pid_stat->{$pid};
2001         if (!$old) {
2002             $last_proc_pid_stat->{$pid} = {
2003                 time => $ctime,
2004                 used => $used,
2005                 cpu => 0,
2006             };
2007             next;
2008         }
2009
2010         my $dtime = ($ctime -  $old->{time}) * $cpucount * $cpuinfo->{user_hz};
2011
2012         if ($dtime > 1000) {
2013             my $dutime = $used -  $old->{used};
2014
2015             $d->{cpu} = (($dutime/$dtime)* $cpucount) / $d->{cpus};
2016             $last_proc_pid_stat->{$pid} = {
2017                 time => $ctime,
2018                 used => $used,
2019                 cpu => $d->{cpu},
2020             };
2021         } else {
2022             $d->{cpu} = $old->{cpu};
2023         }
2024     }
2025
2026     return $res if !$full;
2027
2028     my $qmpclient = PVE::QMPClient->new();
2029
2030     my $blockstatscb = sub {
2031         my ($vmid, $resp) = @_;
2032         my $data = $resp->{'return'} || [];
2033         my $totalrdbytes = 0;
2034         my $totalwrbytes = 0;
2035         for my $blockstat (@$data) {
2036             $totalrdbytes = $totalrdbytes + $blockstat->{stats}->{rd_bytes};
2037             $totalwrbytes = $totalwrbytes + $blockstat->{stats}->{wr_bytes};
2038         }
2039         $res->{$vmid}->{diskread} = $totalrdbytes;
2040         $res->{$vmid}->{diskwrite} = $totalwrbytes;
2041     };
2042
2043     my $statuscb = sub {
2044         my ($vmid, $resp) = @_;
2045         $qmpclient->queue_cmd($vmid, $blockstatscb, 'query-blockstats');
2046
2047         my $status = 'unknown';
2048         if (!defined($status = $resp->{'return'}->{status})) {
2049             warn "unable to get VM status\n";
2050             return;
2051         }
2052
2053         $res->{$vmid}->{qmpstatus} = $resp->{'return'}->{status};
2054     };
2055
2056     foreach my $vmid (keys %$list) {
2057         next if $opt_vmid && ($vmid ne $opt_vmid);
2058         next if !$res->{$vmid}->{pid}; # not running
2059         $qmpclient->queue_cmd($vmid, $statuscb, 'query-status');
2060     }
2061
2062     $qmpclient->queue_execute();
2063
2064     foreach my $vmid (keys %$list) {
2065         next if $opt_vmid && ($vmid ne $opt_vmid);
2066         $res->{$vmid}->{qmpstatus} = $res->{$vmid}->{status} if !$res->{$vmid}->{qmpstatus};
2067     }
2068
2069     return $res;
2070 }
2071
2072 sub foreach_drive {
2073     my ($conf, $func) = @_;
2074
2075     foreach my $ds (keys %$conf) {
2076         next if !valid_drivename($ds);
2077
2078         my $drive = parse_drive($ds, $conf->{$ds});
2079         next if !$drive;
2080
2081         &$func($ds, $drive);
2082     }
2083 }
2084
2085 sub config_to_command {
2086     my ($storecfg, $vmid, $conf, $defaults, $migrate_uri) = @_;
2087
2088     my $cmd = [];
2089     my $devices = [];
2090     my $pciaddr = '';
2091     my $bridges = {};
2092     my $kvmver = kvm_user_version();
2093     my $vernum = 0; # unknown
2094     if ($kvmver =~ m/^(\d+)\.(\d+)$/) {
2095         $vernum = $1*1000000+$2*1000;
2096     } elsif ($kvmver =~ m/^(\d+)\.(\d+)\.(\d+)$/) {
2097         $vernum = $1*1000000+$2*1000+$3;
2098     }
2099
2100     die "detected old qemu-kvm binary ($kvmver)\n" if $vernum < 15000;
2101
2102     my $have_ovz = -f '/proc/vz/vestat';
2103
2104     push @$cmd, '/usr/bin/kvm';
2105
2106     push @$cmd, '-id', $vmid;
2107
2108     my $use_virtio = 0;
2109
2110     my $qmpsocket = qmp_socket($vmid);
2111     push @$cmd, '-chardev', "socket,id=qmp,path=$qmpsocket,server,nowait";
2112     push @$cmd, '-mon', "chardev=qmp,mode=control";
2113
2114     my $socket = vnc_socket($vmid);
2115     push @$cmd,  '-vnc', "unix:$socket,x509,password";
2116
2117     push @$cmd, '-pidfile' , pidfile_name($vmid);
2118
2119     push @$cmd, '-daemonize';
2120
2121     push @$cmd, '-incoming', $migrate_uri if $migrate_uri;
2122
2123     push @$cmd, '-S' if $migrate_uri;
2124
2125     my $use_usb2 = 0;
2126     for (my $i = 0; $i < $MAX_USB_DEVICES; $i++)  {
2127         next if !$conf->{"usb$i"};
2128         $use_usb2 = 1;
2129     }
2130     # include usb device config
2131     push @$devices, '-readconfig', '/usr/share/qemu-server/pve-usb.cfg' if $use_usb2;
2132
2133     # enable absolute mouse coordinates (needed by vnc)
2134     my $tablet = defined($conf->{tablet}) ? $conf->{tablet} : $defaults->{tablet};
2135     if ($tablet) {
2136         if ($use_usb2) {
2137             push @$devices, '-device', 'usb-tablet,bus=ehci.0,port=6';
2138         } else {
2139             push @$devices, '-usbdevice', 'tablet';
2140         }
2141     }
2142
2143     # host pci devices
2144     for (my $i = 0; $i < $MAX_HOSTPCI_DEVICES; $i++)  {
2145           my $d = parse_hostpci($conf->{"hostpci$i"});
2146           next if !$d;
2147           $pciaddr = print_pci_addr("hostpci$i", $bridges);
2148           push @$devices, '-device', "pci-assign,host=$d->{pciid},id=hostpci$i$pciaddr";
2149     }
2150
2151     # usb devices
2152     for (my $i = 0; $i < $MAX_USB_DEVICES; $i++)  {
2153         my $d = parse_usb_device($conf->{"usb$i"});
2154         next if !$d;
2155         if ($d->{vendorid} && $d->{productid}) {
2156             push @$devices, '-device', "usb-host,vendorid=0x$d->{vendorid},productid=0x$d->{productid}";
2157         } elsif (defined($d->{hostbus}) && defined($d->{hostport})) {
2158             push @$devices, '-device', "usb-host,hostbus=$d->{hostbus},hostport=$d->{hostport}";
2159         }
2160     }
2161
2162     # serial devices
2163     for (my $i = 0; $i < $MAX_SERIAL_PORTS; $i++)  {
2164         if (my $path = $conf->{"serial$i"}) {
2165             die "no such serial device\n" if ! -c $path;
2166             push @$devices, '-chardev', "tty,id=serial$i,path=$path";
2167             push @$devices, '-device', "isa-serial,chardev=serial$i";
2168         }
2169     }
2170
2171     # parallel devices
2172     for (my $i = 0; $i < $MAX_PARALLEL_PORTS; $i++)  {
2173         if (my $path = $conf->{"parallel$i"}) {
2174             die "no such parallel device\n" if ! -c $path;
2175             push @$devices, '-chardev', "parport,id=parallel$i,path=$path";
2176             push @$devices, '-device', "isa-parallel,chardev=parallel$i";
2177         }
2178     }
2179
2180     my $vmname = $conf->{name} || "vm$vmid";
2181
2182     push @$cmd, '-name', $vmname;
2183
2184     my $sockets = 1;
2185     $sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
2186     $sockets = $conf->{sockets} if  $conf->{sockets};
2187
2188     my $cores = $conf->{cores} || 1;
2189
2190     push @$cmd, '-smp', "sockets=$sockets,cores=$cores";
2191
2192     push @$cmd, '-cpu', $conf->{cpu} if $conf->{cpu};
2193
2194     push @$cmd, '-nodefaults';
2195
2196     my $bootorder = $conf->{boot} || $confdesc->{boot}->{default};
2197
2198     my $bootindex_hash = {};
2199     my $i = 1;
2200     foreach my $o (split(//, $bootorder)) {
2201         $bootindex_hash->{$o} = $i*100;
2202         $i++;
2203     }
2204
2205     push @$cmd, '-boot', "menu=on";
2206
2207     push @$cmd, '-no-acpi' if defined($conf->{acpi}) && $conf->{acpi} == 0;
2208
2209     push @$cmd, '-no-reboot' if  defined($conf->{reboot}) && $conf->{reboot} == 0;
2210
2211     my $vga = $conf->{vga};
2212     if (!$vga) {
2213         if ($conf->{ostype} && ($conf->{ostype} eq 'win7' || $conf->{ostype} eq 'w2k8')) {
2214             $vga = 'std';
2215         } else {
2216             $vga = 'cirrus';
2217         }
2218     }
2219
2220     push @$cmd, '-vga', $vga if $vga; # for kvm 77 and later
2221
2222     # time drift fix
2223     my $tdf = defined($conf->{tdf}) ? $conf->{tdf} : $defaults->{tdf};
2224     # ignore - no longer supported by newer kvm
2225     # push @$cmd, '-tdf' if $tdf;
2226
2227     my $nokvm = defined($conf->{kvm}) && $conf->{kvm} == 0 ? 1 : 0;
2228
2229     if (my $ost = $conf->{ostype}) {
2230         # other, wxp, w2k, w2k3, w2k8, wvista, win7, l24, l26
2231
2232         if ($ost =~ m/^w/) { # windows
2233             push @$cmd, '-localtime' if !defined($conf->{localtime});
2234
2235             # use rtc-td-hack when acpi is enabled
2236             if (!(defined($conf->{acpi}) && $conf->{acpi} == 0)) {
2237                 push @$cmd, '-rtc-td-hack';
2238             }
2239         }
2240
2241         if ($ost eq 'win7' || $ost eq 'w2k8' || $ost eq 'wvista') {
2242             push @$cmd, '-no-kvm-pit-reinjection';
2243             push @$cmd, '-no-hpet';
2244         }
2245
2246         # -tdf ?
2247         # -no-acpi
2248         # -no-kvm
2249         # -win2k-hack ?
2250     }
2251
2252     if ($nokvm) {
2253         push @$cmd, '-no-kvm';
2254     } else {
2255         die "No accelerator found!\n" if !$cpuinfo->{hvm};
2256     }
2257
2258     push @$cmd, '-localtime' if $conf->{localtime};
2259
2260     push @$cmd, '-startdate', $conf->{startdate} if $conf->{startdate};
2261
2262     push @$cmd, '-S' if $conf->{freeze};
2263
2264     # set keyboard layout
2265     my $kb = $conf->{keyboard} || $defaults->{keyboard};
2266     push @$cmd, '-k', $kb if $kb;
2267
2268     # enable sound
2269     #my $soundhw = $conf->{soundhw} || $defaults->{soundhw};
2270     #push @$cmd, '-soundhw', 'es1370';
2271     #push @$cmd, '-soundhw', $soundhw if $soundhw;
2272
2273     if($conf->{agent}) {
2274         my $qgasocket = qga_socket($vmid);
2275         my $pciaddr = print_pci_addr("qga0", $bridges);
2276         push @$devices, '-chardev', "socket,path=$qgasocket,server,nowait,id=qga0";
2277         push @$devices, '-device', "virtio-serial,id=qga0$pciaddr";
2278         push @$devices, '-device', 'virtserialport,chardev=qga0,name=org.qemu.guest_agent.0';
2279     }
2280
2281     $pciaddr = print_pci_addr("balloon0", $bridges);
2282     push @$devices, '-device', "virtio-balloon-pci,id=balloon0$pciaddr" if $conf->{balloon};
2283
2284     if ($conf->{watchdog}) {
2285         my $wdopts = parse_watchdog($conf->{watchdog});
2286         $pciaddr = print_pci_addr("watchdog", $bridges);
2287         my $watchdog = $wdopts->{model} || 'i6300esb';
2288         push @$devices, '-device', "$watchdog$pciaddr";
2289         push @$devices, '-watchdog-action', $wdopts->{action} if $wdopts->{action};
2290     }
2291
2292     my $vollist = [];
2293     my $scsicontroller = {};
2294     my $ahcicontroller = {};
2295     my $scsihw = defined($conf->{scsihw}) ? $conf->{scsihw} : $defaults->{scsihw};
2296
2297     foreach_drive($conf, sub {
2298         my ($ds, $drive) = @_;
2299
2300         if (PVE::Storage::parse_volume_id($drive->{file}, 1)) {
2301             push @$vollist, $drive->{file};
2302         }
2303
2304         $use_virtio = 1 if $ds =~ m/^virtio/;
2305
2306         if (drive_is_cdrom ($drive)) {
2307             if ($bootindex_hash->{d}) {
2308                 $drive->{bootindex} = $bootindex_hash->{d};
2309                 $bootindex_hash->{d} += 1;
2310             }
2311         } else {
2312             if ($bootindex_hash->{c}) {
2313                 $drive->{bootindex} = $bootindex_hash->{c} if $conf->{bootdisk} && ($conf->{bootdisk} eq $ds);
2314                 $bootindex_hash->{c} += 1;
2315             }
2316         }
2317
2318         if ($drive->{interface} eq 'scsi') {
2319
2320             my $maxdev = ($scsihw ne 'lsi') ? 256 : 7;
2321             my $controller = int($drive->{index} / $maxdev);
2322             $pciaddr = print_pci_addr("scsihw$controller", $bridges);
2323             push @$devices, '-device', "$scsihw,id=scsihw$controller$pciaddr" if !$scsicontroller->{$controller};
2324             $scsicontroller->{$controller}=1;
2325         }
2326
2327         if ($drive->{interface} eq 'sata') {
2328            my $controller = int($drive->{index} / $MAX_SATA_DISKS);
2329            $pciaddr = print_pci_addr("ahci$controller", $bridges);
2330            push @$devices, '-device', "ahci,id=ahci$controller,multifunction=on$pciaddr" if !$ahcicontroller->{$controller};
2331            $ahcicontroller->{$controller}=1;
2332         }
2333
2334         push @$devices, '-drive',print_drive_full($storecfg, $vmid, $drive);
2335         push @$devices, '-device',print_drivedevice_full($storecfg, $conf, $vmid, $drive, $bridges);
2336     });
2337
2338     push @$cmd, '-m', $conf->{memory} || $defaults->{memory};
2339
2340     for (my $i = 0; $i < $MAX_NETS; $i++) {
2341          next if !$conf->{"net$i"};
2342          my $d = parse_net($conf->{"net$i"});
2343          next if !$d;
2344
2345          $use_virtio = 1 if $d->{model} eq 'virtio';
2346
2347          if ($bootindex_hash->{n}) {
2348             $d->{bootindex} = $bootindex_hash->{n};
2349             $bootindex_hash->{n} += 1;
2350          }
2351
2352          my $netdevfull = print_netdev_full($vmid,$conf,$d,"net$i");
2353          push @$devices, '-netdev', $netdevfull;
2354
2355          my $netdevicefull = print_netdevice_full($vmid,$conf,$d,"net$i",$bridges);
2356          push @$devices, '-device', $netdevicefull;
2357     }
2358
2359     #bridges
2360     while (my ($k, $v) = each %$bridges) {
2361         $pciaddr = print_pci_addr("pci.$k");
2362         unshift @$devices, '-device', "pci-bridge,id=pci.$k,chassis_nr=$k$pciaddr" if $k > 0;
2363     }
2364
2365
2366     # hack: virtio with fairsched is unreliable, so we do not use fairsched
2367     # when the VM uses virtio devices.
2368     if (!$use_virtio && $have_ovz) {
2369
2370         my $cpuunits = defined($conf->{cpuunits}) ?
2371             $conf->{cpuunits} : $defaults->{cpuunits};
2372
2373         push @$cmd, '-cpuunits', $cpuunits if $cpuunits;
2374
2375         # fixme: cpulimit is currently ignored
2376         #push @$cmd, '-cpulimit', $conf->{cpulimit} if $conf->{cpulimit};
2377     }
2378
2379     # add custom args
2380     if ($conf->{args}) {
2381         my $aa = PVE::Tools::split_args($conf->{args});
2382         push @$cmd, @$aa;
2383     }
2384
2385     push @$cmd, @$devices;
2386     return wantarray ? ($cmd, $vollist) : $cmd;
2387 }
2388
2389 sub vnc_socket {
2390     my ($vmid) = @_;
2391     return "${var_run_tmpdir}/$vmid.vnc";
2392 }
2393
2394 sub qmp_socket {
2395     my ($vmid) = @_;
2396     return "${var_run_tmpdir}/$vmid.qmp";
2397 }
2398
2399 sub qga_socket {
2400     my ($vmid) = @_;
2401     return "${var_run_tmpdir}/$vmid.qga";
2402 }
2403
2404 sub pidfile_name {
2405     my ($vmid) = @_;
2406     return "${var_run_tmpdir}/$vmid.pid";
2407 }
2408
2409 sub next_migrate_port {
2410
2411     for (my $p = 60000; $p < 60010; $p++) {
2412
2413         my $sock = IO::Socket::INET->new(Listen => 5,
2414                                          LocalAddr => 'localhost',
2415                                          LocalPort => $p,
2416                                          ReuseAddr => 1,
2417                                          Proto     => 0);
2418
2419         if ($sock) {
2420             close($sock);
2421             return $p;
2422         }
2423     }
2424
2425     die "unable to find free migration port";
2426 }
2427
2428 sub vm_devices_list {
2429     my ($vmid) = @_;
2430
2431     my $res = vm_mon_cmd($vmid, 'query-pci');
2432
2433     my $devices = {};
2434     foreach my $pcibus (@$res) {
2435         foreach my $device (@{$pcibus->{devices}}) {
2436             next if !$device->{'qdev_id'};
2437             $devices->{$device->{'qdev_id'}} = $device;
2438         }
2439     }
2440
2441     return $devices;
2442 }
2443
2444 sub vm_deviceplug {
2445     my ($storecfg, $conf, $vmid, $deviceid, $device) = @_;
2446
2447     return 1 if !check_running($vmid) || !$conf->{hotplug};
2448
2449     my $devices_list = vm_devices_list($vmid);
2450     return 1 if defined($devices_list->{$deviceid});
2451
2452     qemu_bridgeadd($storecfg, $conf, $vmid, $deviceid); #add bridge if we need it for the device
2453
2454     if ($deviceid =~ m/^(virtio)(\d+)$/) {
2455         return undef if !qemu_driveadd($storecfg, $vmid, $device);
2456         my $devicefull = print_drivedevice_full($storecfg, $conf, $vmid, $device);
2457         qemu_deviceadd($vmid, $devicefull);
2458         if(!qemu_deviceaddverify($vmid, $deviceid)) {
2459            qemu_drivedel($vmid, $deviceid);
2460            return undef;
2461         }
2462     }
2463
2464     if ($deviceid =~ m/^(scsihw)(\d+)$/) {
2465         my $scsihw = defined($conf->{scsihw}) ? $conf->{scsihw} : "lsi";
2466         my $pciaddr = print_pci_addr($deviceid);
2467         my $devicefull = "$scsihw,id=$deviceid$pciaddr";
2468         qemu_deviceadd($vmid, $devicefull);
2469         return undef if(!qemu_deviceaddverify($vmid, $deviceid));
2470     }
2471
2472     if ($deviceid =~ m/^(scsi)(\d+)$/) {
2473         return 1 if ($conf->{scsihw} && $conf->{scsihw} ne 'lsi'); #virtio-scsi not yet support hotplug
2474         return undef if !qemu_findorcreatescsihw($storecfg,$conf, $vmid, $device);
2475         return undef if !qemu_driveadd($storecfg, $vmid, $device);
2476         my $devicefull = print_drivedevice_full($storecfg, $conf, $vmid, $device);
2477         if(!qemu_deviceadd($vmid, $devicefull)) {
2478            qemu_drivedel($vmid, $deviceid);
2479            return undef;
2480         }
2481     }
2482
2483     if ($deviceid =~ m/^(net)(\d+)$/) {
2484         return undef if !qemu_netdevadd($vmid, $conf, $device, $deviceid);
2485         my $netdevicefull = print_netdevice_full($vmid, $conf, $device, $deviceid);
2486         qemu_deviceadd($vmid, $netdevicefull);
2487         if(!qemu_deviceaddverify($vmid, $deviceid)) {
2488            qemu_netdevdel($vmid, $deviceid);
2489            return undef;
2490         }
2491     }
2492
2493     if ($deviceid =~ m/^(pci\.)(\d+)$/) {
2494         my $bridgeid = $2;
2495         my $pciaddr = print_pci_addr($deviceid);
2496         my $devicefull = "pci-bridge,id=pci.$bridgeid,chassis_nr=$bridgeid$pciaddr";
2497         qemu_deviceadd($vmid, $devicefull);
2498         return undef if !qemu_deviceaddverify($vmid, $deviceid);
2499     }
2500
2501     return 1;
2502 }
2503
2504 sub vm_deviceunplug {
2505     my ($vmid, $conf, $deviceid) = @_;
2506
2507     return 1 if !check_running ($vmid) || !$conf->{hotplug};
2508
2509     my $devices_list = vm_devices_list($vmid);
2510     return 1 if !defined($devices_list->{$deviceid});
2511
2512     die "can't unplug bootdisk" if $conf->{bootdisk} && $conf->{bootdisk} eq $deviceid;
2513
2514     if ($deviceid =~ m/^(virtio)(\d+)$/) {
2515         return undef if !qemu_drivedel($vmid, $deviceid);
2516         qemu_devicedel($vmid, $deviceid);
2517         return undef if !qemu_devicedelverify($vmid, $deviceid);
2518     }
2519
2520     if ($deviceid =~ m/^(lsi)(\d+)$/) {
2521         return undef if !qemu_devicedel($vmid, $deviceid);
2522     }
2523
2524     if ($deviceid =~ m/^(scsi)(\d+)$/) {
2525         return undef if !qemu_devicedel($vmid, $deviceid);
2526         return undef if !qemu_drivedel($vmid, $deviceid);
2527     }
2528
2529     if ($deviceid =~ m/^(net)(\d+)$/) {
2530         return undef if !qemu_netdevdel($vmid, $deviceid);
2531         qemu_devicedel($vmid, $deviceid);
2532         return undef if !qemu_devicedelverify($vmid, $deviceid);
2533     }
2534
2535     return 1;
2536 }
2537
2538 sub qemu_deviceadd {
2539     my ($vmid, $devicefull) = @_;
2540
2541     my $ret = vm_human_monitor_command($vmid, "device_add $devicefull");
2542     $ret =~ s/^\s+//;
2543     # Otherwise, if the command succeeds, no output is sent. So any non-empty string shows an error
2544     return 1 if $ret eq "";
2545     syslog("err", "error on hotplug device : $ret");
2546     return undef;
2547
2548 }
2549
2550 sub qemu_devicedel {
2551     my($vmid, $deviceid) = @_;
2552
2553     my $ret = vm_human_monitor_command($vmid, "device_del $deviceid");
2554     $ret =~ s/^\s+//;
2555     return 1 if $ret eq "";
2556     syslog("err", "detaching device $deviceid failed : $ret");
2557     return undef;
2558 }
2559
2560 sub qemu_driveadd {
2561     my($storecfg, $vmid, $device) = @_;
2562
2563     my $drive = print_drive_full($storecfg, $vmid, $device);
2564     my $ret = vm_human_monitor_command($vmid, "drive_add auto $drive");
2565     # If the command succeeds qemu prints: "OK"
2566     if ($ret !~ m/OK/s) {
2567         syslog("err", "adding drive failed: $ret");
2568         return undef;
2569     }
2570     return 1;
2571 }
2572
2573 sub qemu_drivedel {
2574     my($vmid, $deviceid) = @_;
2575
2576     my $ret = vm_human_monitor_command($vmid, "drive_del drive-$deviceid");
2577     $ret =~ s/^\s+//;
2578     if ($ret =~ m/Device \'.*?\' not found/s) {
2579         # NB: device not found errors mean the drive was auto-deleted and we ignore the error
2580     }
2581     elsif ($ret ne "") {
2582       syslog("err", "deleting drive $deviceid failed : $ret");
2583       return undef;
2584     }
2585     return 1;
2586 }
2587
2588 sub qemu_deviceaddverify {
2589     my ($vmid,$deviceid) = @_;
2590
2591     for (my $i = 0; $i <= 5; $i++) {
2592          my $devices_list = vm_devices_list($vmid);
2593          return 1 if defined($devices_list->{$deviceid});
2594          sleep 1;
2595     }
2596     syslog("err", "error on hotplug device $deviceid");
2597     return undef;
2598 }
2599
2600
2601 sub qemu_devicedelverify {
2602     my ($vmid,$deviceid) = @_;
2603
2604     #need to verify the device is correctly remove as device_del is async and empty return is not reliable
2605     for (my $i = 0; $i <= 5; $i++) {
2606          my $devices_list = vm_devices_list($vmid);
2607          return 1 if !defined($devices_list->{$deviceid});
2608          sleep 1;
2609     }
2610     syslog("err", "error on hot-unplugging device $deviceid");
2611     return undef;
2612 }
2613
2614 sub qemu_findorcreatescsihw {
2615     my ($storecfg, $conf, $vmid, $device) = @_;
2616
2617     my $maxdev = ($conf->{scsihw} && $conf->{scsihw} ne 'lsi') ? 256 : 7;
2618     my $controller = int($device->{index} / $maxdev);
2619     my $scsihwid="scsihw$controller";
2620     my $devices_list = vm_devices_list($vmid);
2621
2622     if(!defined($devices_list->{$scsihwid})) {
2623        return undef if !vm_deviceplug($storecfg, $conf, $vmid, $scsihwid);
2624     }
2625     return 1;
2626 }
2627
2628 sub qemu_bridgeadd {
2629     my ($storecfg, $conf, $vmid, $device) = @_;
2630
2631     my $bridges = {};
2632     my $bridgeid = undef;
2633     print_pci_addr($device, $bridges);
2634
2635     while (my ($k, $v) = each %$bridges) {
2636         $bridgeid = $k;
2637     }
2638     return if $bridgeid < 1;
2639     my $bridge = "pci.$bridgeid";
2640     my $devices_list = vm_devices_list($vmid);
2641
2642     if(!defined($devices_list->{$bridge})) {
2643         return undef if !vm_deviceplug($storecfg, $conf, $vmid, $bridge);
2644     }
2645     return 1;
2646 }
2647
2648 sub qemu_netdevadd {
2649     my ($vmid, $conf, $device, $deviceid) = @_;
2650
2651     my $netdev = print_netdev_full($vmid, $conf, $device, $deviceid);
2652     my $ret = vm_human_monitor_command($vmid, "netdev_add $netdev");
2653     $ret =~ s/^\s+//;
2654
2655     #if the command succeeds, no output is sent. So any non-empty string shows an error
2656     return 1 if $ret eq "";
2657     syslog("err", "adding netdev failed: $ret");
2658     return undef;
2659 }
2660
2661 sub qemu_netdevdel {
2662     my ($vmid, $deviceid) = @_;
2663
2664     my $ret = vm_human_monitor_command($vmid, "netdev_del $deviceid");
2665     $ret =~ s/^\s+//;
2666     #if the command succeeds, no output is sent. So any non-empty string shows an error
2667     return 1 if $ret eq "";
2668     syslog("err", "deleting netdev failed: $ret");
2669     return undef;
2670 }
2671
2672 sub qemu_block_set_io_throttle {
2673     my ($vmid, $deviceid, $bps, $bps_rd, $bps_wr, $iops, $iops_rd, $iops_wr) = @_;
2674
2675     return if !check_running($vmid) ;
2676
2677     $bps = 0 if !$bps;
2678     $bps_rd = 0 if !$bps_rd;
2679     $bps_wr = 0 if !$bps_wr;
2680     $iops = 0 if !$iops;
2681     $iops_rd = 0 if !$iops_rd;
2682     $iops_wr = 0 if !$iops_wr;
2683
2684     vm_mon_cmd($vmid, "block_set_io_throttle", device => $deviceid, bps => int($bps), bps_rd => int($bps_rd), bps_wr => int($bps_wr), iops => int($iops), iops_rd => int($iops_rd), iops_wr => int($iops_wr));
2685
2686 }
2687
2688 # old code, only used to shutdown old VM after update
2689 sub __read_avail {
2690     my ($fh, $timeout) = @_;
2691
2692     my $sel = new IO::Select;
2693     $sel->add($fh);
2694
2695     my $res = '';
2696     my $buf;
2697
2698     my @ready;
2699     while (scalar (@ready = $sel->can_read($timeout))) {
2700         my $count;
2701         if ($count = $fh->sysread($buf, 8192)) {
2702             if ($buf =~ /^(.*)\(qemu\) $/s) {
2703                 $res .= $1;
2704                 last;
2705             } else {
2706                 $res .= $buf;
2707             }
2708         } else {
2709             if (!defined($count)) {
2710                 die "$!\n";
2711             }
2712             last;
2713         }
2714     }
2715
2716     die "monitor read timeout\n" if !scalar(@ready);
2717
2718     return $res;
2719 }
2720
2721 # old code, only used to shutdown old VM after update
2722 sub vm_monitor_command {
2723     my ($vmid, $cmdstr, $nocheck) = @_;
2724
2725     my $res;
2726
2727     eval {
2728         die "VM $vmid not running\n" if !check_running($vmid, $nocheck);
2729
2730         my $sname = "${var_run_tmpdir}/$vmid.mon";
2731
2732         my $sock = IO::Socket::UNIX->new( Peer => $sname ) ||
2733             die "unable to connect to VM $vmid socket - $!\n";
2734
2735         my $timeout = 3;
2736
2737         # hack: migrate sometime blocks the monitor (when migrate_downtime
2738         # is set)
2739         if ($cmdstr =~ m/^(info\s+migrate|migrate\s)/) {
2740             $timeout = 60*60; # 1 hour
2741         }
2742
2743         # read banner;
2744         my $data = __read_avail($sock, $timeout);
2745
2746         if ($data !~ m/^QEMU\s+(\S+)\s+monitor\s/) {
2747             die "got unexpected qemu monitor banner\n";
2748         }
2749
2750         my $sel = new IO::Select;
2751         $sel->add($sock);
2752
2753         if (!scalar(my @ready = $sel->can_write($timeout))) {
2754             die "monitor write error - timeout";
2755         }
2756
2757         my $fullcmd = "$cmdstr\r";
2758
2759         # syslog('info', "VM $vmid monitor command: $cmdstr");
2760
2761         my $b;
2762         if (!($b = $sock->syswrite($fullcmd)) || ($b != length($fullcmd))) {
2763             die "monitor write error - $!";
2764         }
2765
2766         return if ($cmdstr eq 'q') || ($cmdstr eq 'quit');
2767
2768         $timeout = 20;
2769
2770         if ($cmdstr =~ m/^(info\s+migrate|migrate\s)/) {
2771             $timeout = 60*60; # 1 hour
2772         } elsif ($cmdstr =~ m/^(eject|change)/) {
2773             $timeout = 60; # note: cdrom mount command is slow
2774         }
2775         if ($res = __read_avail($sock, $timeout)) {
2776
2777             my @lines = split("\r?\n", $res);
2778
2779             shift @lines if $lines[0] !~ m/^unknown command/; # skip echo
2780
2781             $res = join("\n", @lines);
2782             $res .= "\n";
2783         }
2784     };
2785
2786     my $err = $@;
2787
2788     if ($err) {
2789         syslog("err", "VM $vmid monitor command failed - $err");
2790         die $err;
2791     }
2792
2793     return $res;
2794 }
2795
2796 sub qemu_block_resize {
2797     my ($vmid, $deviceid, $storecfg, $volid, $size) = @_;
2798
2799     my $running = PVE::QemuServer::check_running($vmid);
2800
2801     return if !PVE::Storage::volume_resize($storecfg, $volid, $size, $running);
2802
2803     return if !$running;
2804
2805     vm_mon_cmd($vmid, "block_resize", device => $deviceid, size => int($size));
2806
2807 }
2808
2809 sub qemu_volume_snapshot {
2810     my ($vmid, $deviceid, $storecfg, $volid, $snap) = @_;
2811
2812     my $running = PVE::QemuServer::check_running($vmid);
2813
2814     return if !PVE::Storage::volume_snapshot($storecfg, $volid, $snap, $running);
2815
2816     return if !$running;
2817
2818     vm_mon_cmd($vmid, "snapshot-drive", device => $deviceid, name => $snap);
2819
2820 }
2821
2822 sub qemu_volume_snapshot_delete {
2823     my ($vmid, $deviceid, $storecfg, $volid, $snap) = @_;
2824
2825     my $running = PVE::QemuServer::check_running($vmid);
2826
2827     return if !PVE::Storage::volume_snapshot_delete($storecfg, $volid, $snap, $running);
2828
2829     return if !$running;
2830
2831     vm_mon_cmd($vmid, "delete-drive-snapshot", device => $deviceid, name => $snap);
2832 }
2833
2834 sub qemu_snapshot_start {
2835     my ($vmid, $snap) = @_;
2836
2837     #need to implement statefile location
2838     my $statefile="/tmp/$vmid-$snap";
2839
2840     vm_mon_cmd($vmid, "snapshot-start", statefile => $statefile);
2841
2842 }
2843
2844 sub qemu_snapshot_end {
2845     my ($vmid) = @_;
2846
2847     vm_mon_cmd($vmid, "snapshot-end");
2848
2849 }
2850
2851 sub qga_freezefs {
2852     my ($vmid) = @_;
2853
2854     #need to impplement call to qemu-ga
2855 }
2856
2857 sub qga_unfreezefs {
2858     my ($vmid) = @_;
2859
2860     #need to impplement call to qemu-ga
2861 }
2862
2863 sub vm_start {
2864     my ($storecfg, $vmid, $statefile, $skiplock, $migratedfrom) = @_;
2865
2866     lock_config($vmid, sub {
2867         my $conf = load_config($vmid, $migratedfrom);
2868
2869         check_lock($conf) if !$skiplock;
2870
2871         die "VM $vmid already running\n" if check_running($vmid, undef, $migratedfrom);
2872
2873         my $migrate_uri;
2874         my $migrate_port = 0;
2875
2876         if ($statefile) {
2877             if ($statefile eq 'tcp') {
2878                 $migrate_port = next_migrate_port();
2879                 $migrate_uri = "tcp:localhost:${migrate_port}";
2880             } else {
2881                 if (-f $statefile) {
2882                     $migrate_uri = "exec:cat $statefile";
2883                 } else {
2884                     warn "state file '$statefile' does not exist - doing normal startup\n";
2885                 }
2886             }
2887         }
2888
2889         my $defaults = load_defaults();
2890
2891         # set environment variable useful inside network script
2892         $ENV{PVE_MIGRATED_FROM} = $migratedfrom if $migratedfrom;
2893
2894         my ($cmd, $vollist) = config_to_command($storecfg, $vmid, $conf, $defaults, $migrate_uri);
2895         # host pci devices
2896         for (my $i = 0; $i < $MAX_HOSTPCI_DEVICES; $i++)  {
2897           my $d = parse_hostpci($conf->{"hostpci$i"});
2898           next if !$d;
2899           my $info = pci_device_info("0000:$d->{pciid}");
2900           die "IOMMU not present\n" if !check_iommu_support();
2901           die "no pci device info for device '$d->{pciid}'\n" if !$info;
2902           die "can't unbind pci device '$d->{pciid}'\n" if !pci_dev_bind_to_stub($info);
2903           die "can't reset pci device '$d->{pciid}'\n" if !pci_dev_reset($info);
2904         }
2905
2906         PVE::Storage::activate_volumes($storecfg, $vollist);
2907
2908         eval  { run_command($cmd, timeout => $migrate_uri ? undef : 30); };
2909         my $err = $@;
2910         die "start failed: $err" if $err;
2911
2912         if ($statefile) {
2913
2914             if ($statefile eq 'tcp') {
2915                 print "migration listens on port $migrate_port\n";
2916             } else {
2917                 unlink $statefile;
2918                 # fixme: send resume - is that necessary ?
2919                 eval { vm_mon_cmd($vmid, "cont"); };
2920             }
2921         }
2922
2923         # always set migrate speed (overwrite kvm default of 32m)
2924         # we set a very hight default of 8192m which is basically unlimited
2925         my $migrate_speed = $defaults->{migrate_speed} || 8192;
2926         $migrate_speed = $conf->{migrate_speed} || $migrate_speed;
2927         $migrate_speed = $migrate_speed * 1048576;
2928         eval {
2929             vm_mon_cmd($vmid, "migrate_set_speed", value => $migrate_speed);
2930         };
2931
2932         my $migrate_downtime = $defaults->{migrate_downtime};
2933         $migrate_downtime = $conf->{migrate_downtime} if defined($conf->{migrate_downtime});
2934         if (defined($migrate_downtime)) {
2935             eval { vm_mon_cmd($vmid, "migrate_set_downtime", value => $migrate_downtime); };
2936         }
2937
2938         if($migratedfrom) {
2939             my $capabilities = {};
2940             $capabilities->{capability} =  "xbzrle";
2941             $capabilities->{state} = JSON::true;
2942             eval { PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate-set-capabilities", capabilities => [$capabilities]); };
2943         }
2944
2945         vm_balloonset($vmid, $conf->{balloon}) if $conf->{balloon};
2946
2947     });
2948 }
2949
2950 sub vm_mon_cmd {
2951     my ($vmid, $execute, %params) = @_;
2952
2953     my $cmd = { execute => $execute, arguments => \%params };
2954     vm_qmp_command($vmid, $cmd);
2955 }
2956
2957 sub vm_mon_cmd_nocheck {
2958     my ($vmid, $execute, %params) = @_;
2959
2960     my $cmd = { execute => $execute, arguments => \%params };
2961     vm_qmp_command($vmid, $cmd, 1);
2962 }
2963
2964 sub vm_qmp_command {
2965     my ($vmid, $cmd, $nocheck) = @_;
2966
2967     my $res;
2968
2969     my $timeout;
2970     if ($cmd->{arguments} && $cmd->{arguments}->{timeout}) {
2971         $timeout = $cmd->{arguments}->{timeout};
2972         delete $cmd->{arguments}->{timeout};
2973     }
2974
2975     eval {
2976         die "VM $vmid not running\n" if !check_running($vmid, $nocheck);
2977         my $sname = PVE::QemuServer::qmp_socket($vmid);
2978         if (-e $sname) {
2979             my $qmpclient = PVE::QMPClient->new();
2980
2981             $res = $qmpclient->cmd($vmid, $cmd, $timeout);
2982         } elsif (-e "${var_run_tmpdir}/$vmid.mon") {
2983             die "can't execute complex command on old monitor - stop/start your vm to fix the problem\n"
2984                 if scalar(%{$cmd->{arguments}});
2985             vm_monitor_command($vmid, $cmd->{execute}, $nocheck);
2986         } else {
2987             die "unable to open monitor socket\n";
2988         }
2989     };
2990     if (my $err = $@) {
2991         syslog("err", "VM $vmid qmp command failed - $err");
2992         die $err;
2993     }
2994
2995     return $res;
2996 }
2997
2998 sub vm_human_monitor_command {
2999     my ($vmid, $cmdline) = @_;
3000
3001     my $res;
3002
3003     my $cmd = {
3004         execute => 'human-monitor-command',
3005         arguments => { 'command-line' => $cmdline},
3006     };
3007
3008     return vm_qmp_command($vmid, $cmd);
3009 }
3010
3011 sub vm_commandline {
3012     my ($storecfg, $vmid) = @_;
3013
3014     my $conf = load_config($vmid);
3015
3016     my $defaults = load_defaults();
3017
3018     my $cmd = config_to_command($storecfg, $vmid, $conf, $defaults);
3019
3020     return join(' ', @$cmd);
3021 }
3022
3023 sub vm_reset {
3024     my ($vmid, $skiplock) = @_;
3025
3026     lock_config($vmid, sub {
3027
3028         my $conf = load_config($vmid);
3029
3030         check_lock($conf) if !$skiplock;
3031
3032         vm_mon_cmd($vmid, "system_reset");
3033     });
3034 }
3035
3036 sub get_vm_volumes {
3037     my ($conf) = @_;
3038
3039     my $vollist = [];
3040     foreach_drive($conf, sub {
3041         my ($ds, $drive) = @_;
3042
3043         my ($sid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
3044         return if !$sid;
3045
3046         my $volid = $drive->{file};
3047         return if !$volid || $volid =~ m|^/|;
3048
3049         push @$vollist, $volid;
3050     });
3051
3052     return $vollist;
3053 }
3054
3055 sub vm_stop_cleanup {
3056     my ($storecfg, $vmid, $conf, $keepActive) = @_;
3057
3058     eval {
3059         fairsched_rmnod($vmid); # try to destroy group
3060
3061         if (!$keepActive) {
3062             my $vollist = get_vm_volumes($conf);
3063             PVE::Storage::deactivate_volumes($storecfg, $vollist);
3064         }
3065
3066         foreach my $ext (qw(mon qmp pid vnc qga)) {
3067             unlink "/var/run/qemu-server/${vmid}.$ext";
3068         }
3069     };
3070     warn $@ if $@; # avoid errors - just warn
3071 }
3072
3073 # Note: use $nockeck to skip tests if VM configuration file exists.
3074 # We need that when migration VMs to other nodes (files already moved)
3075 # Note: we set $keepActive in vzdump stop mode - volumes need to stay active
3076 sub vm_stop {
3077     my ($storecfg, $vmid, $skiplock, $nocheck, $timeout, $shutdown, $force, $keepActive, $migratedfrom) = @_;
3078
3079     $force = 1 if !defined($force) && !$shutdown;
3080
3081     if ($migratedfrom){
3082         my $pid = check_running($vmid, $nocheck, $migratedfrom);
3083         kill 15, $pid if $pid;
3084         my $conf = load_config($vmid, $migratedfrom);
3085         vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive);
3086         return;
3087     }
3088
3089     lock_config($vmid, sub {
3090
3091         my $pid = check_running($vmid, $nocheck);
3092         return if !$pid;
3093
3094         my $conf;
3095         if (!$nocheck) {
3096             $conf = load_config($vmid);
3097             check_lock($conf) if !$skiplock;
3098             if (!defined($timeout) && $shutdown && $conf->{startup}) {
3099                 my $opts = parse_startup($conf->{startup});
3100                 $timeout = $opts->{down} if $opts->{down};
3101             }
3102         }
3103
3104         $timeout = 60 if !defined($timeout);
3105
3106         eval {
3107             if ($shutdown) {
3108                 $nocheck ? vm_mon_cmd_nocheck($vmid, "system_powerdown") : vm_mon_cmd($vmid, "system_powerdown");
3109
3110             } else {
3111                 $nocheck ? vm_mon_cmd_nocheck($vmid, "quit") : vm_mon_cmd($vmid, "quit");
3112             }
3113         };
3114         my $err = $@;
3115
3116         if (!$err) {
3117             my $count = 0;
3118             while (($count < $timeout) && check_running($vmid, $nocheck)) {
3119                 $count++;
3120                 sleep 1;
3121             }
3122
3123             if ($count >= $timeout) {
3124                 if ($force) {
3125                     warn "VM still running - terminating now with SIGTERM\n";
3126                     kill 15, $pid;
3127                 } else {
3128                     die "VM quit/powerdown failed - got timeout\n";
3129                 }
3130             } else {
3131                 vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
3132                 return;
3133             }
3134         } else {
3135             if ($force) {
3136                 warn "VM quit/powerdown failed - terminating now with SIGTERM\n";
3137                 kill 15, $pid;
3138             } else {
3139                 die "VM quit/powerdown failed\n";
3140             }
3141         }
3142
3143         # wait again
3144         $timeout = 10;
3145
3146         my $count = 0;
3147         while (($count < $timeout) && check_running($vmid, $nocheck)) {
3148             $count++;
3149             sleep 1;
3150         }
3151
3152         if ($count >= $timeout) {
3153             warn "VM still running - terminating now with SIGKILL\n";
3154             kill 9, $pid;
3155             sleep 1;
3156         }
3157
3158         vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
3159    });
3160 }
3161
3162 sub vm_suspend {
3163     my ($vmid, $skiplock) = @_;
3164
3165     lock_config($vmid, sub {
3166
3167         my $conf = load_config($vmid);
3168
3169         check_lock($conf) if !$skiplock;
3170
3171         vm_mon_cmd($vmid, "stop");
3172     });
3173 }
3174
3175 sub vm_resume {
3176     my ($vmid, $skiplock) = @_;
3177
3178     lock_config($vmid, sub {
3179
3180         my $conf = load_config($vmid);
3181
3182         check_lock($conf) if !$skiplock;
3183
3184         vm_mon_cmd($vmid, "cont");
3185     });
3186 }
3187
3188 sub vm_sendkey {
3189     my ($vmid, $skiplock, $key) = @_;
3190
3191     lock_config($vmid, sub {
3192
3193         my $conf = load_config($vmid);
3194
3195         # there is no qmp command, so we use the human monitor command
3196         vm_human_monitor_command($vmid, "sendkey $key");
3197     });
3198 }
3199
3200 sub vm_destroy {
3201     my ($storecfg, $vmid, $skiplock) = @_;
3202
3203     lock_config($vmid, sub {
3204
3205         my $conf = load_config($vmid);
3206
3207         check_lock($conf) if !$skiplock;
3208
3209         if (!check_running($vmid)) {
3210             fairsched_rmnod($vmid); # try to destroy group
3211             destroy_vm($storecfg, $vmid);
3212         } else {
3213             die "VM $vmid is running - destroy failed\n";
3214         }
3215     });
3216 }
3217
3218 # pci helpers
3219
3220 sub file_write {
3221     my ($filename, $buf) = @_;
3222
3223     my $fh = IO::File->new($filename, "w");
3224     return undef if !$fh;
3225
3226     my $res = print $fh $buf;
3227
3228     $fh->close();
3229
3230     return $res;
3231 }
3232
3233 sub pci_device_info {
3234     my ($name) = @_;
3235
3236     my $res;
3237
3238     return undef if $name !~ m/^([a-f0-9]{4}):([a-f0-9]{2}):([a-f0-9]{2})\.([a-f0-9])$/;
3239     my ($domain, $bus, $slot, $func) = ($1, $2, $3, $4);
3240
3241     my $irq = file_read_firstline("$pcisysfs/devices/$name/irq");
3242     return undef if !defined($irq) || $irq !~ m/^\d+$/;
3243
3244     my $vendor = file_read_firstline("$pcisysfs/devices/$name/vendor");
3245     return undef if !defined($vendor) || $vendor !~ s/^0x//;
3246
3247     my $product = file_read_firstline("$pcisysfs/devices/$name/device");
3248     return undef if !defined($product) || $product !~ s/^0x//;
3249
3250     $res = {
3251         name => $name,
3252         vendor => $vendor,
3253         product => $product,
3254         domain => $domain,
3255         bus => $bus,
3256         slot => $slot,
3257         func => $func,
3258         irq => $irq,
3259         has_fl_reset => -f "$pcisysfs/devices/$name/reset" || 0,
3260     };
3261
3262     return $res;
3263 }
3264
3265 sub pci_dev_reset {
3266     my ($dev) = @_;
3267
3268     my $name = $dev->{name};
3269
3270     my $fn = "$pcisysfs/devices/$name/reset";
3271
3272     return file_write($fn, "1");
3273 }
3274
3275 sub pci_dev_bind_to_stub {
3276     my ($dev) = @_;
3277
3278     my $name = $dev->{name};
3279
3280     my $testdir = "$pcisysfs/drivers/pci-stub/$name";
3281     return 1 if -d $testdir;
3282
3283     my $data = "$dev->{vendor} $dev->{product}";
3284     return undef if !file_write("$pcisysfs/drivers/pci-stub/new_id", $data);
3285
3286     my $fn = "$pcisysfs/devices/$name/driver/unbind";
3287     if (!file_write($fn, $name)) {
3288         return undef if -f $fn;
3289     }
3290
3291     $fn = "$pcisysfs/drivers/pci-stub/bind";
3292     if (! -d $testdir) {
3293         return undef if !file_write($fn, $name);
3294     }
3295
3296     return -d $testdir;
3297 }
3298
3299 sub print_pci_addr {
3300     my ($id, $bridges) = @_;
3301
3302     my $res = '';
3303     my $devices = {
3304         #addr1 : ide,parallel,serial (motherboard)
3305         #addr2 : first videocard
3306         balloon0 => { bus => 0, addr => 3 },
3307         watchdog => { bus => 0, addr => 4 },
3308         scsihw0 => { bus => 0, addr => 5 },
3309         scsihw1 => { bus => 0, addr => 6 },
3310         ahci0 => { bus => 0, addr => 7 },
3311         qga0 => { bus => 0, addr => 8 },
3312         virtio0 => { bus => 0, addr => 10 },
3313         virtio1 => { bus => 0, addr => 11 },
3314         virtio2 => { bus => 0, addr => 12 },
3315         virtio3 => { bus => 0, addr => 13 },
3316         virtio4 => { bus => 0, addr => 14 },
3317         virtio5 => { bus => 0, addr => 15 },
3318         hostpci0 => { bus => 0, addr => 16 },
3319         hostpci1 => { bus => 0, addr => 17 },
3320         net0 => { bus => 0, addr => 18 },
3321         net1 => { bus => 0, addr => 19 },
3322         net2 => { bus => 0, addr => 20 },
3323         net3 => { bus => 0, addr => 21 },
3324         net4 => { bus => 0, addr => 22 },
3325         net5 => { bus => 0, addr => 23 },
3326         #addr29 : usb-host (pve-usb.cfg)
3327         'pci.1' => { bus => 0, addr => 30 },
3328         'pci.2' => { bus => 0, addr => 31 },
3329         'net6' => { bus => 1, addr => 1 },
3330         'net7' => { bus => 1, addr => 2 },
3331         'net8' => { bus => 1, addr => 3 },
3332         'net9' => { bus => 1, addr => 4 },
3333         'net10' => { bus => 1, addr => 5 },
3334         'net11' => { bus => 1, addr => 6 },
3335         'net12' => { bus => 1, addr => 7 },
3336         'net13' => { bus => 1, addr => 8 },
3337         'net14' => { bus => 1, addr => 9 },
3338         'net15' => { bus => 1, addr => 10 },
3339         'net16' => { bus => 1, addr => 11 },
3340         'net17' => { bus => 1, addr => 12 },
3341         'net18' => { bus => 1, addr => 13 },
3342         'net19' => { bus => 1, addr => 14 },
3343         'net20' => { bus => 1, addr => 15 },
3344         'net21' => { bus => 1, addr => 16 },
3345         'net22' => { bus => 1, addr => 17 },
3346         'net23' => { bus => 1, addr => 18 },
3347         'net24' => { bus => 1, addr => 19 },
3348         'net25' => { bus => 1, addr => 20 },
3349         'net26' => { bus => 1, addr => 21 },
3350         'net27' => { bus => 1, addr => 22 },
3351         'net28' => { bus => 1, addr => 23 },
3352         'net29' => { bus => 1, addr => 24 },
3353         'net30' => { bus => 1, addr => 25 },
3354         'net31' => { bus => 1, addr => 26 },
3355         'virtio6' => { bus => 2, addr => 1 },
3356         'virtio7' => { bus => 2, addr => 2 },
3357         'virtio8' => { bus => 2, addr => 3 },
3358         'virtio9' => { bus => 2, addr => 4 },
3359         'virtio10' => { bus => 2, addr => 5 },
3360         'virtio11' => { bus => 2, addr => 6 },
3361         'virtio12' => { bus => 2, addr => 7 },
3362         'virtio13' => { bus => 2, addr => 8 },
3363         'virtio14' => { bus => 2, addr => 9 },
3364         'virtio15' => { bus => 2, addr => 10 },
3365     };
3366
3367     if (defined($devices->{$id}->{bus}) && defined($devices->{$id}->{addr})) {
3368            my $addr = sprintf("0x%x", $devices->{$id}->{addr});
3369            my $bus = $devices->{$id}->{bus};
3370            $res = ",bus=pci.$bus,addr=$addr";
3371            $bridges->{$bus} = 1 if $bridges;
3372     }
3373     return $res;
3374
3375 }
3376
3377 sub vm_balloonset {
3378     my ($vmid, $value) = @_;
3379
3380     vm_mon_cmd($vmid, "balloon", value => $value);
3381 }
3382
3383 # vzdump restore implementaion
3384
3385 sub archive_read_firstfile {
3386     my $archive = shift;
3387
3388     die "ERROR: file '$archive' does not exist\n" if ! -f $archive;
3389
3390     # try to detect archive type first
3391     my $pid = open (TMP, "tar tf '$archive'|") ||
3392         die "unable to open file '$archive'\n";
3393     my $firstfile = <TMP>;
3394     kill 15, $pid;
3395     close TMP;
3396
3397     die "ERROR: archive contaions no data\n" if !$firstfile;
3398     chomp $firstfile;
3399
3400     return $firstfile;
3401 }
3402
3403 sub restore_cleanup {
3404     my $statfile = shift;
3405
3406     print STDERR "starting cleanup\n";
3407
3408     if (my $fd = IO::File->new($statfile, "r")) {
3409         while (defined(my $line = <$fd>)) {
3410             if ($line =~ m/vzdump:([^\s:]*):(\S+)$/) {
3411                 my $volid = $2;
3412                 eval {
3413                     if ($volid =~ m|^/|) {
3414                         unlink $volid || die 'unlink failed\n';
3415                     } else {
3416                         my $cfg = cfs_read_file('storage.cfg');
3417                         PVE::Storage::vdisk_free($cfg, $volid);
3418                     }
3419                     print STDERR "temporary volume '$volid' sucessfuly removed\n";
3420                 };
3421                 print STDERR "unable to cleanup '$volid' - $@" if $@;
3422             } else {
3423                 print STDERR "unable to parse line in statfile - $line";
3424             }
3425         }
3426         $fd->close();
3427     }
3428 }
3429
3430 sub restore_archive {
3431     my ($archive, $vmid, $user, $opts) = @_;
3432
3433     if ($archive ne '-') {
3434         my $firstfile = archive_read_firstfile($archive);
3435         die "ERROR: file '$archive' dos not lock like a QemuServer vzdump backup\n"
3436             if $firstfile ne 'qemu-server.conf';
3437     }
3438
3439     my $tocmd = "/usr/lib/qemu-server/qmextract";
3440
3441     $tocmd .= " --storage " . PVE::Tools::shellquote($opts->{storage}) if $opts->{storage};
3442     $tocmd .= " --pool " . PVE::Tools::shellquote($opts->{pool}) if $opts->{pool};
3443     $tocmd .= ' --prealloc' if $opts->{prealloc};
3444     $tocmd .= ' --info' if $opts->{info};
3445
3446     # tar option "xf" does not autodetect compression when read from STDIN,
3447     # so we pipe to zcat
3448     my $cmd = "zcat -f|tar xf " . PVE::Tools::shellquote($archive) . " " .
3449         PVE::Tools::shellquote("--to-command=$tocmd");
3450
3451     my $tmpdir = "/var/tmp/vzdumptmp$$";
3452     mkpath $tmpdir;
3453
3454     local $ENV{VZDUMP_TMPDIR} = $tmpdir;
3455     local $ENV{VZDUMP_VMID} = $vmid;
3456     local $ENV{VZDUMP_USER} = $user;
3457
3458     my $conffile = PVE::QemuServer::config_file($vmid);
3459     my $tmpfn = "$conffile.$$.tmp";
3460
3461     # disable interrupts (always do cleanups)
3462     local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = sub {
3463         print STDERR "got interrupt - ignored\n";
3464     };
3465
3466     eval {
3467         # enable interrupts
3468         local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = $SIG{PIPE} = sub {
3469             die "interrupted by signal\n";
3470         };
3471
3472         if ($archive eq '-') {
3473             print "extracting archive from STDIN\n";
3474             run_command($cmd, input => "<&STDIN");
3475         } else {
3476             print "extracting archive '$archive'\n";
3477             run_command($cmd);
3478         }
3479
3480         return if $opts->{info};
3481
3482         # read new mapping
3483         my $map = {};
3484         my $statfile = "$tmpdir/qmrestore.stat";
3485         if (my $fd = IO::File->new($statfile, "r")) {
3486             while (defined (my $line = <$fd>)) {
3487                 if ($line =~ m/vzdump:([^\s:]*):(\S+)$/) {
3488                     $map->{$1} = $2 if $1;
3489                 } else {
3490                     print STDERR "unable to parse line in statfile - $line\n";
3491                 }
3492             }
3493             $fd->close();
3494         }
3495
3496         my $confsrc = "$tmpdir/qemu-server.conf";
3497
3498         my $srcfd = new IO::File($confsrc, "r") ||
3499             die "unable to open file '$confsrc'\n";
3500
3501         my $outfd = new IO::File ($tmpfn, "w") ||
3502             die "unable to write config for VM $vmid\n";
3503
3504         my $netcount = 0;
3505
3506         while (defined (my $line = <$srcfd>)) {
3507             next if $line =~ m/^\#vzdump\#/;
3508             next if $line =~ m/^lock:/;
3509             next if $line =~ m/^unused\d+:/;
3510
3511             if (($line =~ m/^(vlan(\d+)):\s*(\S+)\s*$/)) {
3512                 # try to convert old 1.X settings
3513                 my ($id, $ind, $ethcfg) = ($1, $2, $3);
3514                 foreach my $devconfig (PVE::Tools::split_list($ethcfg)) {
3515                     my ($model, $macaddr) = split(/\=/, $devconfig);
3516                     $macaddr = PVE::Tools::random_ether_addr() if !$macaddr || $opts->{unique};
3517                     my $net = {
3518                         model => $model,
3519                         bridge => "vmbr$ind",
3520                         macaddr => $macaddr,
3521                     };
3522                     my $netstr = print_net($net);
3523                     print $outfd "net${netcount}: $netstr\n";
3524                     $netcount++;
3525                 }
3526             } elsif (($line =~ m/^(net\d+):\s*(\S+)\s*$/) && ($opts->{unique})) {
3527                 my ($id, $netstr) = ($1, $2);
3528                 my $net = parse_net($netstr);
3529                 $net->{macaddr} = PVE::Tools::random_ether_addr() if $net->{macaddr};
3530                 $netstr = print_net($net);
3531                 print $outfd "$id: $netstr\n";
3532             } elsif ($line =~ m/^((ide|scsi|virtio)\d+):\s*(\S+)\s*$/) {
3533                 my $virtdev = $1;
3534                 my $value = $2;
3535                 if ($line =~ m/backup=no/) {
3536                     print $outfd "#$line";
3537                 } elsif ($virtdev && $map->{$virtdev}) {
3538                     my $di = PVE::QemuServer::parse_drive($virtdev, $value);
3539                     $di->{file} = $map->{$virtdev};
3540                     $value = PVE::QemuServer::print_drive($vmid, $di);
3541                     print $outfd "$virtdev: $value\n";
3542                 } else {
3543                     print $outfd $line;
3544                 }
3545             } else {
3546                 print $outfd $line;
3547             }
3548         }
3549
3550         $srcfd->close();
3551         $outfd->close();
3552     };
3553     my $err = $@;
3554
3555     if ($err) {
3556
3557         unlink $tmpfn;
3558
3559         restore_cleanup("$tmpdir/qmrestore.stat") if !$opts->{info};
3560
3561         die $err;
3562     }
3563
3564     rmtree $tmpdir;
3565
3566     rename $tmpfn, $conffile ||
3567         die "unable to commit configuration file '$conffile'\n";
3568 };
3569
3570
3571 # Internal snapshots
3572
3573 # NOTE: Snapshot create/delete involves several non-atomic
3574 # action, and can take a long time.
3575 # So we try to avoid locking the file and use 'lock' variable
3576 # inside the config file instead.
3577
3578 my $snapshot_copy_config = sub {
3579     my ($source, $dest) = @_;
3580
3581     foreach my $k (keys %$source) {
3582         next if $k eq 'snapshots';
3583         next if $k eq 'snapstate';
3584         next if $k eq 'snaptime';
3585         next if $k eq 'vmstate';
3586         next if $k eq 'lock';
3587         next if $k eq 'digest';
3588         next if $k eq 'description';
3589         next if $k =~ m/^unused\d+$/;
3590
3591         $dest->{$k} = $source->{$k};
3592     }
3593 };
3594
3595 my $snapshot_apply_config = sub {
3596     my ($conf, $snap) = @_;
3597
3598     # copy snapshot list
3599     my $newconf = {
3600         snapshots => $conf->{snapshots},
3601     };
3602
3603     # keep description and list of unused disks
3604     foreach my $k (keys %$conf) {
3605         next if !($k =~ m/^unused\d+$/ || $k eq 'description');
3606         $newconf->{$k} = $conf->{$k};
3607     }
3608
3609     &$snapshot_copy_config($snap, $newconf);
3610
3611     return $newconf;
3612 };
3613
3614 sub foreach_writable_storage {
3615     my ($conf, $func) = @_;
3616
3617     my $sidhash = {};
3618
3619     foreach my $ds (keys %$conf) {
3620         next if !valid_drivename($ds);
3621
3622         my $drive = parse_drive($ds, $conf->{$ds});
3623         next if !$drive;
3624         next if drive_is_cdrom($drive);
3625
3626         my $volid = $drive->{file};
3627
3628         my ($sid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
3629         $sidhash->{$sid} = $sid if $sid;
3630     }
3631
3632     foreach my $sid (sort keys %$sidhash) {
3633         &$func($sid);
3634     }
3635 }
3636
3637 my $alloc_vmstate_volid = sub {
3638     my ($storecfg, $vmid, $conf, $snapname) = @_;
3639
3640     # Note: we try to be smart when selecting a $target storage
3641
3642     my $target;
3643
3644     # search shared storage first
3645     foreach_writable_storage($conf, sub {
3646         my ($sid) = @_;
3647         my $scfg = PVE::Storage::storage_config($storecfg, $sid);
3648         return if !$scfg->{shared};
3649
3650         $target = $sid if !$target || $scfg->{path}; # prefer file based storage
3651     });
3652
3653     if (!$target) {
3654         # now search local storage
3655         foreach_writable_storage($conf, sub {
3656             my ($sid) = @_;
3657             my $scfg = PVE::Storage::storage_config($storecfg, $sid);
3658             return if $scfg->{shared};
3659
3660             $target = $sid if !$target || $scfg->{path}; # prefer file based storage;
3661         });
3662     }
3663
3664     $target = 'local' if !$target;
3665
3666     my $driver_state_size = 32; # assume 32MB is enough to safe all driver state;
3667     my $size = $conf->{memory} + $driver_state_size;
3668
3669     my $name = "vm-$vmid-state-$snapname";
3670     my $scfg = PVE::Storage::storage_config($storecfg, $target);
3671     $name .= ".raw" if $scfg->{path}; # add filename extension for file base storage
3672     my $volid = PVE::Storage::vdisk_alloc($storecfg, $target, $vmid, 'raw', $name, $size*1024);
3673
3674     return $volid;
3675 };
3676
3677 my $snapshot_prepare = sub {
3678     my ($vmid, $snapname, $save_vmstate, $comment) = @_;
3679
3680     my $snap;
3681
3682     my $updatefn =  sub {
3683
3684         my $conf = load_config($vmid);
3685
3686         check_lock($conf);
3687
3688         $conf->{lock} = 'snapshot';
3689
3690         die "snapshot name '$snapname' already used\n"
3691             if defined($conf->{snapshots}->{$snapname});
3692
3693         my $storecfg = PVE::Storage::config();
3694
3695         foreach_drive($conf, sub {
3696             my ($ds, $drive) = @_;
3697
3698             return if drive_is_cdrom($drive);
3699             my $volid = $drive->{file};
3700
3701             my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
3702             if ($storeid) {
3703                 my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
3704                 die "can't snapshot volume '$volid'\n"
3705                     if !(($scfg->{path} && $volname =~ m/\.qcow2$/) ||
3706                          ($scfg->{type} eq 'rbd') ||
3707                          ($scfg->{type} eq 'sheepdog'));
3708             } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
3709                 die "snapshot device '$volid' is not possible\n";
3710             } else {
3711                 die "can't snapshot volume '$volid'\n";
3712             }
3713         });
3714
3715
3716         $snap = $conf->{snapshots}->{$snapname} = {};
3717
3718         if ($save_vmstate && check_running($vmid)) {
3719             $snap->{vmstate} = &$alloc_vmstate_volid($storecfg, $vmid, $conf, $snapname);
3720         }
3721
3722         &$snapshot_copy_config($conf, $snap);
3723
3724         $snap->{snapstate} = "prepare";
3725         $snap->{snaptime} = time();
3726         $snap->{description} = $comment if $comment;
3727
3728         update_config_nolock($vmid, $conf, 1);
3729     };
3730
3731     lock_config($vmid, $updatefn);
3732
3733     return $snap;
3734 };
3735
3736 my $snapshot_commit = sub {
3737     my ($vmid, $snapname) = @_;
3738
3739     my $updatefn = sub {
3740
3741         my $conf = load_config($vmid);
3742
3743         die "missing snapshot lock\n"
3744             if !($conf->{lock} && $conf->{lock} eq 'snapshot');
3745
3746         my $snap = $conf->{snapshots}->{$snapname};
3747
3748         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3749
3750         die "wrong snapshot state\n"
3751             if !($snap->{snapstate} && $snap->{snapstate} eq "prepare");
3752
3753         delete $snap->{snapstate};
3754         delete $conf->{lock};
3755
3756         my $newconf = &$snapshot_apply_config($conf, $snap);
3757
3758         $newconf->{parent} = $snapname;
3759
3760         update_config_nolock($vmid, $newconf, 1);
3761     };
3762
3763     lock_config($vmid, $updatefn);
3764 };
3765
3766 sub snapshot_rollback {
3767     my ($vmid, $snapname) = @_;
3768
3769     my $snap;
3770
3771     my $prepare = 1;
3772
3773     my $updatefn = sub {
3774
3775         my $conf = load_config($vmid);
3776
3777         check_lock($conf) if $prepare;
3778
3779         die "unable to rollback vm $vmid: vm is running\n"
3780             if check_running($vmid);
3781
3782         if ($prepare) {
3783             $conf->{lock} = 'rollback';
3784         } else {
3785             die "got wrong lock\n" if !($conf->{lock} && $conf->{lock} eq 'rollback');
3786             delete $conf->{lock};
3787         }
3788
3789         $snap = $conf->{snapshots}->{$snapname};
3790
3791         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3792
3793         die "unable to rollback to incomplete snapshot (snapstate = $snap->{snapstate})\n"
3794             if $snap->{snapstate};
3795
3796         if (!$prepare) {
3797             # copy snapshot config to current config
3798             $conf = &$snapshot_apply_config($conf, $snap);
3799             $conf->{parent} = $snapname;
3800         }
3801
3802         update_config_nolock($vmid, $conf, 1);
3803     };
3804
3805     lock_config($vmid, $updatefn);
3806
3807     my $storecfg = PVE::Storage::config();
3808
3809     foreach_drive($snap, sub {
3810         my ($ds, $drive) = @_;
3811
3812         return if drive_is_cdrom($drive);
3813
3814         my $volid = $drive->{file};
3815         my $device = "drive-$ds";
3816
3817         PVE::Storage::volume_snapshot_rollback($storecfg, $volid, $snapname);
3818     });
3819
3820     $prepare = 0;
3821     lock_config($vmid, $updatefn);
3822 }
3823
3824 sub snapshot_create {
3825     my ($vmid, $snapname, $save_vmstate, $freezefs, $comment) = @_;
3826
3827     my $snap = &$snapshot_prepare($vmid, $snapname, $save_vmstate, $comment);
3828
3829     $freezefs = $save_vmstate = 0 if !$snap->{vmstate}; # vm is not running
3830
3831     my $drivehash = {};
3832
3833     my $running = check_running($vmid);
3834
3835     eval {
3836         # create internal snapshots of all drives
3837
3838         qemu_snapshot_start($vmid, $snapname) if $running;
3839
3840         qga_freezefs($vmid) if $running && $freezefs;
3841
3842         my $storecfg = PVE::Storage::config();
3843
3844         foreach_drive($snap, sub {
3845             my ($ds, $drive) = @_;
3846
3847             return if drive_is_cdrom($drive);
3848
3849             my $volid = $drive->{file};
3850             my $device = "drive-$ds";
3851
3852             qemu_volume_snapshot($vmid, $device, $storecfg, $volid, $snapname);
3853             $drivehash->{$ds} = 1;
3854        });
3855     };
3856     my $err = $@;
3857
3858     eval { gqa_unfreezefs($vmid) if $running && $freezefs; };
3859     warn $@ if $@;
3860
3861     eval { qemu_snapshot_end($vmid) if $running; };
3862     warn $@ if $@;
3863
3864     if ($err) {
3865         warn "snapshot create failed: starting cleanup\n";
3866         eval { snapshot_delete($vmid, $snapname, 0, $drivehash); };
3867         warn $@ if $@;
3868         die $err;
3869     }
3870
3871     &$snapshot_commit($vmid, $snapname);
3872 }
3873
3874 # Note: $drivehash is only set when called from snapshot_create.
3875 sub snapshot_delete {
3876     my ($vmid, $snapname, $force, $drivehash) = @_;
3877
3878     my $prepare = 1;
3879
3880     my $snap;
3881     my $unused = [];
3882
3883     my $unlink_parent = sub {
3884         my ($confref, $new_parent) = @_;
3885
3886         if ($confref->{parent} && $confref->{parent} eq $snapname) {
3887             if ($new_parent) {
3888                 $confref->{parent} = $new_parent;
3889             } else {
3890                 delete $confref->{parent};
3891             }
3892         }
3893     };
3894
3895     my $updatefn =  sub {
3896         my ($remove_drive) = @_;
3897
3898         my $conf = load_config($vmid);
3899
3900         check_lock($conf) if !$drivehash;
3901
3902         $snap = $conf->{snapshots}->{$snapname};
3903
3904         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3905
3906         # remove parent refs
3907         &$unlink_parent($conf, $snap->{parent});
3908         foreach my $sn (keys %{$conf->{snapshots}}) {
3909             next if $sn eq $snapname;
3910             &$unlink_parent($conf->{snapshots}->{$sn}, $snap->{parent});
3911         }
3912
3913         if ($remove_drive) {
3914             if ($remove_drive eq 'vmstate') {
3915                 delete $snap->{$remove_drive};
3916             } else {
3917                 my $drive = parse_drive($remove_drive, $snap->{$remove_drive});
3918                 my $volid = $drive->{file};
3919                 delete $snap->{$remove_drive};
3920                 add_unused_volume($conf, $volid);
3921             }
3922         }
3923
3924         if ($prepare) {
3925             $snap->{snapstate} = 'delete';
3926         } else {
3927             delete $conf->{snapshots}->{$snapname};
3928             delete $conf->{lock} if $drivehash;
3929             foreach my $volid (@$unused) {
3930                 add_unused_volume($conf, $volid);
3931             }
3932         }
3933
3934         update_config_nolock($vmid, $conf, 1);
3935     };
3936
3937     lock_config($vmid, $updatefn);
3938
3939     # now remove vmstate file
3940
3941     my $storecfg = PVE::Storage::config();
3942
3943     if ($snap->{vmstate}) {
3944         eval {  PVE::Storage::vdisk_free($storecfg, $snap->{vmstate}); };
3945         if (my $err = $@) {
3946             die $err if !$force;
3947             warn $err;
3948         }
3949         # save changes (remove vmstate from snapshot)
3950         lock_config($vmid, $updatefn, 'vmstate') if !$force;
3951     };
3952
3953     # now remove all internal snapshots
3954     foreach_drive($snap, sub {
3955         my ($ds, $drive) = @_;
3956
3957         return if drive_is_cdrom($drive);
3958
3959         my $volid = $drive->{file};
3960         my $device = "drive-$ds";
3961
3962         if (!$drivehash || $drivehash->{$ds}) {
3963             eval { qemu_volume_snapshot_delete($vmid, $device, $storecfg, $volid, $snapname); };
3964             if (my $err = $@) {
3965                 die $err if !$force;
3966                 warn $err;
3967             }
3968         }
3969
3970         # save changes (remove drive fron snapshot)
3971         lock_config($vmid, $updatefn, $ds) if !$force;
3972         push @$unused, $volid;
3973     });
3974
3975     # now cleanup config
3976     $prepare = 0;
3977     lock_config($vmid, $updatefn);
3978 }
3979
3980 1;