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) = @_;
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     my $use_usb2 = 0;
2122     for (my $i = 0; $i < $MAX_USB_DEVICES; $i++)  {
2123         next if !$conf->{"usb$i"};
2124         $use_usb2 = 1;
2125     }
2126     # include usb device config
2127     push @$devices, '-readconfig', '/usr/share/qemu-server/pve-usb.cfg' if $use_usb2;
2128
2129     # enable absolute mouse coordinates (needed by vnc)
2130     my $tablet = defined($conf->{tablet}) ? $conf->{tablet} : $defaults->{tablet};
2131     if ($tablet) {
2132         if ($use_usb2) {
2133             push @$devices, '-device', 'usb-tablet,bus=ehci.0,port=6';
2134         } else {
2135             push @$devices, '-usbdevice', 'tablet';
2136         }
2137     }
2138
2139     # host pci devices
2140     for (my $i = 0; $i < $MAX_HOSTPCI_DEVICES; $i++)  {
2141           my $d = parse_hostpci($conf->{"hostpci$i"});
2142           next if !$d;
2143           $pciaddr = print_pci_addr("hostpci$i", $bridges);
2144           push @$devices, '-device', "pci-assign,host=$d->{pciid},id=hostpci$i$pciaddr";
2145     }
2146
2147     # usb devices
2148     for (my $i = 0; $i < $MAX_USB_DEVICES; $i++)  {
2149         my $d = parse_usb_device($conf->{"usb$i"});
2150         next if !$d;
2151         if ($d->{vendorid} && $d->{productid}) {
2152             push @$devices, '-device', "usb-host,vendorid=0x$d->{vendorid},productid=0x$d->{productid}";
2153         } elsif (defined($d->{hostbus}) && defined($d->{hostport})) {
2154             push @$devices, '-device', "usb-host,hostbus=$d->{hostbus},hostport=$d->{hostport}";
2155         }
2156     }
2157
2158     # serial devices
2159     for (my $i = 0; $i < $MAX_SERIAL_PORTS; $i++)  {
2160         if (my $path = $conf->{"serial$i"}) {
2161             die "no such serial device\n" if ! -c $path;
2162             push @$devices, '-chardev', "tty,id=serial$i,path=$path";
2163             push @$devices, '-device', "isa-serial,chardev=serial$i";
2164         }
2165     }
2166
2167     # parallel devices
2168     for (my $i = 0; $i < $MAX_PARALLEL_PORTS; $i++)  {
2169         if (my $path = $conf->{"parallel$i"}) {
2170             die "no such parallel device\n" if ! -c $path;
2171             push @$devices, '-chardev', "parport,id=parallel$i,path=$path";
2172             push @$devices, '-device', "isa-parallel,chardev=parallel$i";
2173         }
2174     }
2175
2176     my $vmname = $conf->{name} || "vm$vmid";
2177
2178     push @$cmd, '-name', $vmname;
2179
2180     my $sockets = 1;
2181     $sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
2182     $sockets = $conf->{sockets} if  $conf->{sockets};
2183
2184     my $cores = $conf->{cores} || 1;
2185
2186     push @$cmd, '-smp', "sockets=$sockets,cores=$cores";
2187
2188     push @$cmd, '-cpu', $conf->{cpu} if $conf->{cpu};
2189
2190     push @$cmd, '-nodefaults';
2191
2192     my $bootorder = $conf->{boot} || $confdesc->{boot}->{default};
2193
2194     my $bootindex_hash = {};
2195     my $i = 1;
2196     foreach my $o (split(//, $bootorder)) {
2197         $bootindex_hash->{$o} = $i*100;
2198         $i++;
2199     }
2200
2201     push @$cmd, '-boot', "menu=on";
2202
2203     push @$cmd, '-no-acpi' if defined($conf->{acpi}) && $conf->{acpi} == 0;
2204
2205     push @$cmd, '-no-reboot' if  defined($conf->{reboot}) && $conf->{reboot} == 0;
2206
2207     my $vga = $conf->{vga};
2208     if (!$vga) {
2209         if ($conf->{ostype} && ($conf->{ostype} eq 'win7' || $conf->{ostype} eq 'w2k8')) {
2210             $vga = 'std';
2211         } else {
2212             $vga = 'cirrus';
2213         }
2214     }
2215
2216     push @$cmd, '-vga', $vga if $vga; # for kvm 77 and later
2217
2218     # time drift fix
2219     my $tdf = defined($conf->{tdf}) ? $conf->{tdf} : $defaults->{tdf};
2220     # ignore - no longer supported by newer kvm
2221     # push @$cmd, '-tdf' if $tdf;
2222
2223     my $nokvm = defined($conf->{kvm}) && $conf->{kvm} == 0 ? 1 : 0;
2224
2225     if (my $ost = $conf->{ostype}) {
2226         # other, wxp, w2k, w2k3, w2k8, wvista, win7, l24, l26
2227
2228         if ($ost =~ m/^w/) { # windows
2229             push @$cmd, '-localtime' if !defined($conf->{localtime});
2230
2231             # use rtc-td-hack when acpi is enabled
2232             if (!(defined($conf->{acpi}) && $conf->{acpi} == 0)) {
2233                 push @$cmd, '-rtc-td-hack';
2234             }
2235         }
2236
2237         if ($ost eq 'win7' || $ost eq 'w2k8' || $ost eq 'wvista') {
2238             push @$cmd, '-no-kvm-pit-reinjection';
2239             push @$cmd, '-no-hpet';
2240         }
2241
2242         # -tdf ?
2243         # -no-acpi
2244         # -no-kvm
2245         # -win2k-hack ?
2246     }
2247
2248     if ($nokvm) {
2249         push @$cmd, '-no-kvm';
2250     } else {
2251         die "No accelerator found!\n" if !$cpuinfo->{hvm};
2252     }
2253
2254     push @$cmd, '-localtime' if $conf->{localtime};
2255
2256     push @$cmd, '-startdate', $conf->{startdate} if $conf->{startdate};
2257
2258     push @$cmd, '-S' if $conf->{freeze};
2259
2260     # set keyboard layout
2261     my $kb = $conf->{keyboard} || $defaults->{keyboard};
2262     push @$cmd, '-k', $kb if $kb;
2263
2264     # enable sound
2265     #my $soundhw = $conf->{soundhw} || $defaults->{soundhw};
2266     #push @$cmd, '-soundhw', 'es1370';
2267     #push @$cmd, '-soundhw', $soundhw if $soundhw;
2268
2269     if($conf->{agent}) {
2270         my $qgasocket = qga_socket($vmid);
2271         my $pciaddr = print_pci_addr("qga0", $bridges);
2272         push @$devices, '-chardev', "socket,path=$qgasocket,server,nowait,id=qga0";
2273         push @$devices, '-device', "virtio-serial,id=qga0$pciaddr";
2274         push @$devices, '-device', 'virtserialport,chardev=qga0,name=org.qemu.guest_agent.0';
2275     }
2276
2277     $pciaddr = print_pci_addr("balloon0", $bridges);
2278     push @$devices, '-device', "virtio-balloon-pci,id=balloon0$pciaddr" if $conf->{balloon};
2279
2280     if ($conf->{watchdog}) {
2281         my $wdopts = parse_watchdog($conf->{watchdog});
2282         $pciaddr = print_pci_addr("watchdog", $bridges);
2283         my $watchdog = $wdopts->{model} || 'i6300esb';
2284         push @$devices, '-device', "$watchdog$pciaddr";
2285         push @$devices, '-watchdog-action', $wdopts->{action} if $wdopts->{action};
2286     }
2287
2288     my $vollist = [];
2289     my $scsicontroller = {};
2290     my $ahcicontroller = {};
2291     my $scsihw = defined($conf->{scsihw}) ? $conf->{scsihw} : $defaults->{scsihw};
2292
2293     foreach_drive($conf, sub {
2294         my ($ds, $drive) = @_;
2295
2296         if (PVE::Storage::parse_volume_id($drive->{file}, 1)) {
2297             push @$vollist, $drive->{file};
2298         }
2299
2300         $use_virtio = 1 if $ds =~ m/^virtio/;
2301
2302         if (drive_is_cdrom ($drive)) {
2303             if ($bootindex_hash->{d}) {
2304                 $drive->{bootindex} = $bootindex_hash->{d};
2305                 $bootindex_hash->{d} += 1;
2306             }
2307         } else {
2308             if ($bootindex_hash->{c}) {
2309                 $drive->{bootindex} = $bootindex_hash->{c} if $conf->{bootdisk} && ($conf->{bootdisk} eq $ds);
2310                 $bootindex_hash->{c} += 1;
2311             }
2312         }
2313
2314         if ($drive->{interface} eq 'scsi') {
2315
2316             my $maxdev = ($scsihw ne 'lsi') ? 256 : 7;
2317             my $controller = int($drive->{index} / $maxdev);
2318             $pciaddr = print_pci_addr("scsihw$controller", $bridges);
2319             push @$devices, '-device', "$scsihw,id=scsihw$controller$pciaddr" if !$scsicontroller->{$controller};
2320             $scsicontroller->{$controller}=1;
2321         }
2322
2323         if ($drive->{interface} eq 'sata') {
2324            my $controller = int($drive->{index} / $MAX_SATA_DISKS);
2325            $pciaddr = print_pci_addr("ahci$controller", $bridges);
2326            push @$devices, '-device', "ahci,id=ahci$controller,multifunction=on$pciaddr" if !$ahcicontroller->{$controller};
2327            $ahcicontroller->{$controller}=1;
2328         }
2329
2330         push @$devices, '-drive',print_drive_full($storecfg, $vmid, $drive);
2331         push @$devices, '-device',print_drivedevice_full($storecfg, $conf, $vmid, $drive, $bridges);
2332     });
2333
2334     push @$cmd, '-m', $conf->{memory} || $defaults->{memory};
2335
2336     for (my $i = 0; $i < $MAX_NETS; $i++) {
2337          next if !$conf->{"net$i"};
2338          my $d = parse_net($conf->{"net$i"});
2339          next if !$d;
2340
2341          $use_virtio = 1 if $d->{model} eq 'virtio';
2342
2343          if ($bootindex_hash->{n}) {
2344             $d->{bootindex} = $bootindex_hash->{n};
2345             $bootindex_hash->{n} += 1;
2346          }
2347
2348          my $netdevfull = print_netdev_full($vmid,$conf,$d,"net$i");
2349          push @$devices, '-netdev', $netdevfull;
2350
2351          my $netdevicefull = print_netdevice_full($vmid,$conf,$d,"net$i",$bridges);
2352          push @$devices, '-device', $netdevicefull;
2353     }
2354
2355     #bridges
2356     while (my ($k, $v) = each %$bridges) {
2357         $pciaddr = print_pci_addr("pci.$k");
2358         unshift @$devices, '-device', "pci-bridge,id=pci.$k,chassis_nr=$k$pciaddr" if $k > 0;
2359     }
2360
2361
2362     # hack: virtio with fairsched is unreliable, so we do not use fairsched
2363     # when the VM uses virtio devices.
2364     if (!$use_virtio && $have_ovz) {
2365
2366         my $cpuunits = defined($conf->{cpuunits}) ?
2367             $conf->{cpuunits} : $defaults->{cpuunits};
2368
2369         push @$cmd, '-cpuunits', $cpuunits if $cpuunits;
2370
2371         # fixme: cpulimit is currently ignored
2372         #push @$cmd, '-cpulimit', $conf->{cpulimit} if $conf->{cpulimit};
2373     }
2374
2375     # add custom args
2376     if ($conf->{args}) {
2377         my $aa = PVE::Tools::split_args($conf->{args});
2378         push @$cmd, @$aa;
2379     }
2380
2381     push @$cmd, @$devices;
2382     return wantarray ? ($cmd, $vollist) : $cmd;
2383 }
2384
2385 sub vnc_socket {
2386     my ($vmid) = @_;
2387     return "${var_run_tmpdir}/$vmid.vnc";
2388 }
2389
2390 sub qmp_socket {
2391     my ($vmid) = @_;
2392     return "${var_run_tmpdir}/$vmid.qmp";
2393 }
2394
2395 sub qga_socket {
2396     my ($vmid) = @_;
2397     return "${var_run_tmpdir}/$vmid.qga";
2398 }
2399
2400 sub pidfile_name {
2401     my ($vmid) = @_;
2402     return "${var_run_tmpdir}/$vmid.pid";
2403 }
2404
2405 sub next_migrate_port {
2406
2407     for (my $p = 60000; $p < 60010; $p++) {
2408
2409         my $sock = IO::Socket::INET->new(Listen => 5,
2410                                          LocalAddr => 'localhost',
2411                                          LocalPort => $p,
2412                                          ReuseAddr => 1,
2413                                          Proto     => 0);
2414
2415         if ($sock) {
2416             close($sock);
2417             return $p;
2418         }
2419     }
2420
2421     die "unable to find free migration port";
2422 }
2423
2424 sub vm_devices_list {
2425     my ($vmid) = @_;
2426
2427     my $res = vm_mon_cmd($vmid, 'query-pci');
2428
2429     my $devices = {};
2430     foreach my $pcibus (@$res) {
2431         foreach my $device (@{$pcibus->{devices}}) {
2432             next if !$device->{'qdev_id'};
2433             $devices->{$device->{'qdev_id'}} = $device;
2434         }
2435     }
2436
2437     return $devices;
2438 }
2439
2440 sub vm_deviceplug {
2441     my ($storecfg, $conf, $vmid, $deviceid, $device) = @_;
2442
2443     return 1 if !check_running($vmid) || !$conf->{hotplug};
2444
2445     my $devices_list = vm_devices_list($vmid);
2446     return 1 if defined($devices_list->{$deviceid});
2447
2448     qemu_bridgeadd($storecfg, $conf, $vmid, $deviceid); #add bridge if we need it for the device
2449
2450     if ($deviceid =~ m/^(virtio)(\d+)$/) {
2451         return undef if !qemu_driveadd($storecfg, $vmid, $device);
2452         my $devicefull = print_drivedevice_full($storecfg, $conf, $vmid, $device);
2453         qemu_deviceadd($vmid, $devicefull);
2454         if(!qemu_deviceaddverify($vmid, $deviceid)) {
2455            qemu_drivedel($vmid, $deviceid);
2456            return undef;
2457         }
2458     }
2459
2460     if ($deviceid =~ m/^(scsihw)(\d+)$/) {
2461         my $scsihw = defined($conf->{scsihw}) ? $conf->{scsihw} : "lsi";
2462         my $pciaddr = print_pci_addr($deviceid);
2463         my $devicefull = "$scsihw,id=$deviceid$pciaddr";
2464         qemu_deviceadd($vmid, $devicefull);
2465         return undef if(!qemu_deviceaddverify($vmid, $deviceid));
2466     }
2467
2468     if ($deviceid =~ m/^(scsi)(\d+)$/) {
2469         return 1 if ($conf->{scsihw} && $conf->{scsihw} ne 'lsi'); #virtio-scsi not yet support hotplug
2470         return undef if !qemu_findorcreatescsihw($storecfg,$conf, $vmid, $device);
2471         return undef if !qemu_driveadd($storecfg, $vmid, $device);
2472         my $devicefull = print_drivedevice_full($storecfg, $conf, $vmid, $device);
2473         if(!qemu_deviceadd($vmid, $devicefull)) {
2474            qemu_drivedel($vmid, $deviceid);
2475            return undef;
2476         }
2477     }
2478
2479     if ($deviceid =~ m/^(net)(\d+)$/) {
2480         return undef if !qemu_netdevadd($vmid, $conf, $device, $deviceid);
2481         my $netdevicefull = print_netdevice_full($vmid, $conf, $device, $deviceid);
2482         qemu_deviceadd($vmid, $netdevicefull);
2483         if(!qemu_deviceaddverify($vmid, $deviceid)) {
2484            qemu_netdevdel($vmid, $deviceid);
2485            return undef;
2486         }
2487     }
2488
2489     if ($deviceid =~ m/^(pci\.)(\d+)$/) {
2490         my $bridgeid = $2;
2491         my $pciaddr = print_pci_addr($deviceid);
2492         my $devicefull = "pci-bridge,id=pci.$bridgeid,chassis_nr=$bridgeid$pciaddr";
2493         qemu_deviceadd($vmid, $devicefull);
2494         return undef if !qemu_deviceaddverify($vmid, $deviceid);
2495     }
2496
2497     return 1;
2498 }
2499
2500 sub vm_deviceunplug {
2501     my ($vmid, $conf, $deviceid) = @_;
2502
2503     return 1 if !check_running ($vmid) || !$conf->{hotplug};
2504
2505     my $devices_list = vm_devices_list($vmid);
2506     return 1 if !defined($devices_list->{$deviceid});
2507
2508     die "can't unplug bootdisk" if $conf->{bootdisk} && $conf->{bootdisk} eq $deviceid;
2509
2510     if ($deviceid =~ m/^(virtio)(\d+)$/) {
2511         return undef if !qemu_drivedel($vmid, $deviceid);
2512         qemu_devicedel($vmid, $deviceid);
2513         return undef if !qemu_devicedelverify($vmid, $deviceid);
2514     }
2515
2516     if ($deviceid =~ m/^(lsi)(\d+)$/) {
2517         return undef if !qemu_devicedel($vmid, $deviceid);
2518     }
2519
2520     if ($deviceid =~ m/^(scsi)(\d+)$/) {
2521         return undef if !qemu_devicedel($vmid, $deviceid);
2522         return undef if !qemu_drivedel($vmid, $deviceid);
2523     }
2524
2525     if ($deviceid =~ m/^(net)(\d+)$/) {
2526         return undef if !qemu_netdevdel($vmid, $deviceid);
2527         qemu_devicedel($vmid, $deviceid);
2528         return undef if !qemu_devicedelverify($vmid, $deviceid);
2529     }
2530
2531     return 1;
2532 }
2533
2534 sub qemu_deviceadd {
2535     my ($vmid, $devicefull) = @_;
2536
2537     my $ret = vm_human_monitor_command($vmid, "device_add $devicefull");
2538     $ret =~ s/^\s+//;
2539     # Otherwise, if the command succeeds, no output is sent. So any non-empty string shows an error
2540     return 1 if $ret eq "";
2541     syslog("err", "error on hotplug device : $ret");
2542     return undef;
2543
2544 }
2545
2546 sub qemu_devicedel {
2547     my($vmid, $deviceid) = @_;
2548
2549     my $ret = vm_human_monitor_command($vmid, "device_del $deviceid");
2550     $ret =~ s/^\s+//;
2551     return 1 if $ret eq "";
2552     syslog("err", "detaching device $deviceid failed : $ret");
2553     return undef;
2554 }
2555
2556 sub qemu_driveadd {
2557     my($storecfg, $vmid, $device) = @_;
2558
2559     my $drive = print_drive_full($storecfg, $vmid, $device);
2560     my $ret = vm_human_monitor_command($vmid, "drive_add auto $drive");
2561     # If the command succeeds qemu prints: "OK"
2562     if ($ret !~ m/OK/s) {
2563         syslog("err", "adding drive failed: $ret");
2564         return undef;
2565     }
2566     return 1;
2567 }
2568
2569 sub qemu_drivedel {
2570     my($vmid, $deviceid) = @_;
2571
2572     my $ret = vm_human_monitor_command($vmid, "drive_del drive-$deviceid");
2573     $ret =~ s/^\s+//;
2574     if ($ret =~ m/Device \'.*?\' not found/s) {
2575         # NB: device not found errors mean the drive was auto-deleted and we ignore the error
2576     }
2577     elsif ($ret ne "") {
2578       syslog("err", "deleting drive $deviceid failed : $ret");
2579       return undef;
2580     }
2581     return 1;
2582 }
2583
2584 sub qemu_deviceaddverify {
2585     my ($vmid,$deviceid) = @_;
2586
2587     for (my $i = 0; $i <= 5; $i++) {
2588          my $devices_list = vm_devices_list($vmid);
2589          return 1 if defined($devices_list->{$deviceid});
2590          sleep 1;
2591     }
2592     syslog("err", "error on hotplug device $deviceid");
2593     return undef;
2594 }
2595
2596
2597 sub qemu_devicedelverify {
2598     my ($vmid,$deviceid) = @_;
2599
2600     #need to verify the device is correctly remove as device_del is async and empty return is not reliable
2601     for (my $i = 0; $i <= 5; $i++) {
2602          my $devices_list = vm_devices_list($vmid);
2603          return 1 if !defined($devices_list->{$deviceid});
2604          sleep 1;
2605     }
2606     syslog("err", "error on hot-unplugging device $deviceid");
2607     return undef;
2608 }
2609
2610 sub qemu_findorcreatescsihw {
2611     my ($storecfg, $conf, $vmid, $device) = @_;
2612
2613     my $maxdev = ($conf->{scsihw} && $conf->{scsihw} ne 'lsi') ? 256 : 7;
2614     my $controller = int($device->{index} / $maxdev);
2615     my $scsihwid="scsihw$controller";
2616     my $devices_list = vm_devices_list($vmid);
2617
2618     if(!defined($devices_list->{$scsihwid})) {
2619        return undef if !vm_deviceplug($storecfg, $conf, $vmid, $scsihwid);
2620     }
2621     return 1;
2622 }
2623
2624 sub qemu_bridgeadd {
2625     my ($storecfg, $conf, $vmid, $device) = @_;
2626
2627     my $bridges = {};
2628     my $bridgeid = undef;
2629     print_pci_addr($device, $bridges);
2630
2631     while (my ($k, $v) = each %$bridges) {
2632         $bridgeid = $k;
2633     }
2634     return if $bridgeid < 1;
2635     my $bridge = "pci.$bridgeid";
2636     my $devices_list = vm_devices_list($vmid);
2637
2638     if(!defined($devices_list->{$bridge})) {
2639         return undef if !vm_deviceplug($storecfg, $conf, $vmid, $bridge);
2640     }
2641     return 1;
2642 }
2643
2644 sub qemu_netdevadd {
2645     my ($vmid, $conf, $device, $deviceid) = @_;
2646
2647     my $netdev = print_netdev_full($vmid, $conf, $device, $deviceid);
2648     my $ret = vm_human_monitor_command($vmid, "netdev_add $netdev");
2649     $ret =~ s/^\s+//;
2650
2651     #if the command succeeds, no output is sent. So any non-empty string shows an error
2652     return 1 if $ret eq "";
2653     syslog("err", "adding netdev failed: $ret");
2654     return undef;
2655 }
2656
2657 sub qemu_netdevdel {
2658     my ($vmid, $deviceid) = @_;
2659
2660     my $ret = vm_human_monitor_command($vmid, "netdev_del $deviceid");
2661     $ret =~ s/^\s+//;
2662     #if the command succeeds, no output is sent. So any non-empty string shows an error
2663     return 1 if $ret eq "";
2664     syslog("err", "deleting netdev failed: $ret");
2665     return undef;
2666 }
2667
2668 sub qemu_block_set_io_throttle {
2669     my ($vmid, $deviceid, $bps, $bps_rd, $bps_wr, $iops, $iops_rd, $iops_wr) = @_;
2670
2671     return if !check_running($vmid) ;
2672
2673     $bps = 0 if !$bps;
2674     $bps_rd = 0 if !$bps_rd;
2675     $bps_wr = 0 if !$bps_wr;
2676     $iops = 0 if !$iops;
2677     $iops_rd = 0 if !$iops_rd;
2678     $iops_wr = 0 if !$iops_wr;
2679
2680     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($iops_wr));
2681
2682 }
2683
2684 # old code, only used to shutdown old VM after update
2685 sub __read_avail {
2686     my ($fh, $timeout) = @_;
2687
2688     my $sel = new IO::Select;
2689     $sel->add($fh);
2690
2691     my $res = '';
2692     my $buf;
2693
2694     my @ready;
2695     while (scalar (@ready = $sel->can_read($timeout))) {
2696         my $count;
2697         if ($count = $fh->sysread($buf, 8192)) {
2698             if ($buf =~ /^(.*)\(qemu\) $/s) {
2699                 $res .= $1;
2700                 last;
2701             } else {
2702                 $res .= $buf;
2703             }
2704         } else {
2705             if (!defined($count)) {
2706                 die "$!\n";
2707             }
2708             last;
2709         }
2710     }
2711
2712     die "monitor read timeout\n" if !scalar(@ready);
2713
2714     return $res;
2715 }
2716
2717 # old code, only used to shutdown old VM after update
2718 sub vm_monitor_command {
2719     my ($vmid, $cmdstr, $nocheck) = @_;
2720
2721     my $res;
2722
2723     eval {
2724         die "VM $vmid not running\n" if !check_running($vmid, $nocheck);
2725
2726         my $sname = "${var_run_tmpdir}/$vmid.mon";
2727
2728         my $sock = IO::Socket::UNIX->new( Peer => $sname ) ||
2729             die "unable to connect to VM $vmid socket - $!\n";
2730
2731         my $timeout = 3;
2732
2733         # hack: migrate sometime blocks the monitor (when migrate_downtime
2734         # is set)
2735         if ($cmdstr =~ m/^(info\s+migrate|migrate\s)/) {
2736             $timeout = 60*60; # 1 hour
2737         }
2738
2739         # read banner;
2740         my $data = __read_avail($sock, $timeout);
2741
2742         if ($data !~ m/^QEMU\s+(\S+)\s+monitor\s/) {
2743             die "got unexpected qemu monitor banner\n";
2744         }
2745
2746         my $sel = new IO::Select;
2747         $sel->add($sock);
2748
2749         if (!scalar(my @ready = $sel->can_write($timeout))) {
2750             die "monitor write error - timeout";
2751         }
2752
2753         my $fullcmd = "$cmdstr\r";
2754
2755         # syslog('info', "VM $vmid monitor command: $cmdstr");
2756
2757         my $b;
2758         if (!($b = $sock->syswrite($fullcmd)) || ($b != length($fullcmd))) {
2759             die "monitor write error - $!";
2760         }
2761
2762         return if ($cmdstr eq 'q') || ($cmdstr eq 'quit');
2763
2764         $timeout = 20;
2765
2766         if ($cmdstr =~ m/^(info\s+migrate|migrate\s)/) {
2767             $timeout = 60*60; # 1 hour
2768         } elsif ($cmdstr =~ m/^(eject|change)/) {
2769             $timeout = 60; # note: cdrom mount command is slow
2770         }
2771         if ($res = __read_avail($sock, $timeout)) {
2772
2773             my @lines = split("\r?\n", $res);
2774
2775             shift @lines if $lines[0] !~ m/^unknown command/; # skip echo
2776
2777             $res = join("\n", @lines);
2778             $res .= "\n";
2779         }
2780     };
2781
2782     my $err = $@;
2783
2784     if ($err) {
2785         syslog("err", "VM $vmid monitor command failed - $err");
2786         die $err;
2787     }
2788
2789     return $res;
2790 }
2791
2792 sub qemu_block_resize {
2793     my ($vmid, $deviceid, $storecfg, $volid, $size) = @_;
2794
2795     my $running = PVE::QemuServer::check_running($vmid);
2796
2797     return if !PVE::Storage::volume_resize($storecfg, $volid, $size, $running);
2798
2799     return if !$running;
2800
2801     vm_mon_cmd($vmid, "block_resize", device => $deviceid, size => int($size));
2802
2803 }
2804
2805 sub qemu_volume_snapshot {
2806     my ($vmid, $deviceid, $storecfg, $volid, $snap) = @_;
2807
2808     my $running = PVE::QemuServer::check_running($vmid);
2809
2810     return if !PVE::Storage::volume_snapshot($storecfg, $volid, $snap, $running);
2811
2812     return if !$running;
2813
2814     vm_mon_cmd($vmid, "snapshot-drive", device => $deviceid, name => $snap);
2815
2816 }
2817
2818 sub qemu_volume_snapshot_delete {
2819     my ($vmid, $deviceid, $storecfg, $volid, $snap) = @_;
2820
2821     my $running = PVE::QemuServer::check_running($vmid);
2822
2823     return if !PVE::Storage::volume_snapshot_delete($storecfg, $volid, $snap, $running);
2824
2825     return if !$running;
2826
2827     vm_mon_cmd($vmid, "delete-drive-snapshot", device => $deviceid, name => $snap);
2828 }
2829
2830 sub qga_freezefs {
2831     my ($vmid) = @_;
2832
2833     #need to impplement call to qemu-ga
2834 }
2835
2836 sub qga_unfreezefs {
2837     my ($vmid) = @_;
2838
2839     #need to impplement call to qemu-ga
2840 }
2841
2842 sub vm_start {
2843     my ($storecfg, $vmid, $statefile, $skiplock, $migratedfrom) = @_;
2844
2845     lock_config($vmid, sub {
2846         my $conf = load_config($vmid, $migratedfrom);
2847
2848         check_lock($conf) if !$skiplock;
2849
2850         die "VM $vmid already running\n" if check_running($vmid, undef, $migratedfrom);
2851
2852         my $defaults = load_defaults();
2853
2854         # set environment variable useful inside network script
2855         $ENV{PVE_MIGRATED_FROM} = $migratedfrom if $migratedfrom;
2856
2857         my ($cmd, $vollist) = config_to_command($storecfg, $vmid, $conf, $defaults);
2858
2859         my $migrate_port = 0;
2860
2861         if ($statefile) {
2862             if ($statefile eq 'tcp') {
2863                 $migrate_port = next_migrate_port();
2864                 my $migrate_uri = "tcp:localhost:${migrate_port}";
2865                 push @$cmd, '-incoming', $migrate_uri;
2866                 push @$cmd, '-S';
2867             } else {
2868                 push @$cmd, '-loadstate', $statefile;
2869             }
2870         }
2871
2872         # host pci devices
2873         for (my $i = 0; $i < $MAX_HOSTPCI_DEVICES; $i++)  {
2874           my $d = parse_hostpci($conf->{"hostpci$i"});
2875           next if !$d;
2876           my $info = pci_device_info("0000:$d->{pciid}");
2877           die "IOMMU not present\n" if !check_iommu_support();
2878           die "no pci device info for device '$d->{pciid}'\n" if !$info;
2879           die "can't unbind pci device '$d->{pciid}'\n" if !pci_dev_bind_to_stub($info);
2880           die "can't reset pci device '$d->{pciid}'\n" if !pci_dev_reset($info);
2881         }
2882
2883         PVE::Storage::activate_volumes($storecfg, $vollist);
2884
2885         eval  { run_command($cmd, timeout => $migrate_port ? undef : 30); };
2886         my $err = $@;
2887         die "start failed: $err" if $err;
2888
2889         print "migration listens on port $migrate_port\n" if $migrate_port;
2890
2891         if ($statefile && $statefile ne 'tcp') eval {
2892             vm_mon_cmd($vmid, "cont");
2893         }
2894
2895         # always set migrate speed (overwrite kvm default of 32m)
2896         # we set a very hight default of 8192m which is basically unlimited
2897         my $migrate_speed = $defaults->{migrate_speed} || 8192;
2898         $migrate_speed = $conf->{migrate_speed} || $migrate_speed;
2899         $migrate_speed = $migrate_speed * 1048576;
2900         eval {
2901             vm_mon_cmd($vmid, "migrate_set_speed", value => $migrate_speed);
2902         };
2903
2904         my $migrate_downtime = $defaults->{migrate_downtime};
2905         $migrate_downtime = $conf->{migrate_downtime} if defined($conf->{migrate_downtime});
2906         if (defined($migrate_downtime)) {
2907             eval { vm_mon_cmd($vmid, "migrate_set_downtime", value => $migrate_downtime); };
2908         }
2909
2910         if($migratedfrom) {
2911             my $capabilities = {};
2912             $capabilities->{capability} =  "xbzrle";
2913             $capabilities->{state} = JSON::true;
2914             eval { PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate-set-capabilities", capabilities => [$capabilities]); };
2915         }
2916
2917         vm_balloonset($vmid, $conf->{balloon}) if $conf->{balloon};
2918
2919     });
2920 }
2921
2922 sub vm_mon_cmd {
2923     my ($vmid, $execute, %params) = @_;
2924
2925     my $cmd = { execute => $execute, arguments => \%params };
2926     vm_qmp_command($vmid, $cmd);
2927 }
2928
2929 sub vm_mon_cmd_nocheck {
2930     my ($vmid, $execute, %params) = @_;
2931
2932     my $cmd = { execute => $execute, arguments => \%params };
2933     vm_qmp_command($vmid, $cmd, 1);
2934 }
2935
2936 sub vm_qmp_command {
2937     my ($vmid, $cmd, $nocheck) = @_;
2938
2939     my $res;
2940
2941     my $timeout;
2942     if ($cmd->{arguments} && $cmd->{arguments}->{timeout}) {
2943         $timeout = $cmd->{arguments}->{timeout};
2944         delete $cmd->{arguments}->{timeout};
2945     }
2946
2947     eval {
2948         die "VM $vmid not running\n" if !check_running($vmid, $nocheck);
2949         my $sname = PVE::QemuServer::qmp_socket($vmid);
2950         if (-e $sname) {
2951             my $qmpclient = PVE::QMPClient->new();
2952
2953             $res = $qmpclient->cmd($vmid, $cmd, $timeout);
2954         } elsif (-e "${var_run_tmpdir}/$vmid.mon") {
2955             die "can't execute complex command on old monitor - stop/start your vm to fix the problem\n"
2956                 if scalar(%{$cmd->{arguments}});
2957             vm_monitor_command($vmid, $cmd->{execute}, $nocheck);
2958         } else {
2959             die "unable to open monitor socket\n";
2960         }
2961     };
2962     if (my $err = $@) {
2963         syslog("err", "VM $vmid qmp command failed - $err");
2964         die $err;
2965     }
2966
2967     return $res;
2968 }
2969
2970 sub vm_human_monitor_command {
2971     my ($vmid, $cmdline) = @_;
2972
2973     my $res;
2974
2975     my $cmd = {
2976         execute => 'human-monitor-command',
2977         arguments => { 'command-line' => $cmdline},
2978     };
2979
2980     return vm_qmp_command($vmid, $cmd);
2981 }
2982
2983 sub vm_commandline {
2984     my ($storecfg, $vmid) = @_;
2985
2986     my $conf = load_config($vmid);
2987
2988     my $defaults = load_defaults();
2989
2990     my $cmd = config_to_command($storecfg, $vmid, $conf, $defaults);
2991
2992     return join(' ', @$cmd);
2993 }
2994
2995 sub vm_reset {
2996     my ($vmid, $skiplock) = @_;
2997
2998     lock_config($vmid, sub {
2999
3000         my $conf = load_config($vmid);
3001
3002         check_lock($conf) if !$skiplock;
3003
3004         vm_mon_cmd($vmid, "system_reset");
3005     });
3006 }
3007
3008 sub get_vm_volumes {
3009     my ($conf) = @_;
3010
3011     my $vollist = [];
3012     foreach_drive($conf, sub {
3013         my ($ds, $drive) = @_;
3014
3015         my ($sid, $volname) = PVE::Storage::parse_volume_id($drive->{file}, 1);
3016         return if !$sid;
3017
3018         my $volid = $drive->{file};
3019         return if !$volid || $volid =~ m|^/|;
3020
3021         push @$vollist, $volid;
3022     });
3023
3024     return $vollist;
3025 }
3026
3027 sub vm_stop_cleanup {
3028     my ($storecfg, $vmid, $conf, $keepActive) = @_;
3029
3030     eval {
3031         fairsched_rmnod($vmid); # try to destroy group
3032
3033         if (!$keepActive) {
3034             my $vollist = get_vm_volumes($conf);
3035             PVE::Storage::deactivate_volumes($storecfg, $vollist);
3036         }
3037
3038         foreach my $ext (qw(mon qmp pid vnc qga)) {
3039             unlink "/var/run/qemu-server/${vmid}.$ext";
3040         }
3041     };
3042     warn $@ if $@; # avoid errors - just warn
3043 }
3044
3045 # Note: use $nockeck to skip tests if VM configuration file exists.
3046 # We need that when migration VMs to other nodes (files already moved)
3047 # Note: we set $keepActive in vzdump stop mode - volumes need to stay active
3048 sub vm_stop {
3049     my ($storecfg, $vmid, $skiplock, $nocheck, $timeout, $shutdown, $force, $keepActive, $migratedfrom) = @_;
3050
3051     $force = 1 if !defined($force) && !$shutdown;
3052
3053     if ($migratedfrom){
3054         my $pid = check_running($vmid, $nocheck, $migratedfrom);
3055         kill 15, $pid if $pid;
3056         my $conf = load_config($vmid, $migratedfrom);
3057         vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive);
3058         return;
3059     }
3060
3061     lock_config($vmid, sub {
3062
3063         my $pid = check_running($vmid, $nocheck);
3064         return if !$pid;
3065
3066         my $conf;
3067         if (!$nocheck) {
3068             $conf = load_config($vmid);
3069             check_lock($conf) if !$skiplock;
3070             if (!defined($timeout) && $shutdown && $conf->{startup}) {
3071                 my $opts = parse_startup($conf->{startup});
3072                 $timeout = $opts->{down} if $opts->{down};
3073             }
3074         }
3075
3076         $timeout = 60 if !defined($timeout);
3077
3078         eval {
3079             if ($shutdown) {
3080                 $nocheck ? vm_mon_cmd_nocheck($vmid, "system_powerdown") : vm_mon_cmd($vmid, "system_powerdown");
3081
3082             } else {
3083                 $nocheck ? vm_mon_cmd_nocheck($vmid, "quit") : vm_mon_cmd($vmid, "quit");
3084             }
3085         };
3086         my $err = $@;
3087
3088         if (!$err) {
3089             my $count = 0;
3090             while (($count < $timeout) && check_running($vmid, $nocheck)) {
3091                 $count++;
3092                 sleep 1;
3093             }
3094
3095             if ($count >= $timeout) {
3096                 if ($force) {
3097                     warn "VM still running - terminating now with SIGTERM\n";
3098                     kill 15, $pid;
3099                 } else {
3100                     die "VM quit/powerdown failed - got timeout\n";
3101                 }
3102             } else {
3103                 vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
3104                 return;
3105             }
3106         } else {
3107             if ($force) {
3108                 warn "VM quit/powerdown failed - terminating now with SIGTERM\n";
3109                 kill 15, $pid;
3110             } else {
3111                 die "VM quit/powerdown failed\n";
3112             }
3113         }
3114
3115         # wait again
3116         $timeout = 10;
3117
3118         my $count = 0;
3119         while (($count < $timeout) && check_running($vmid, $nocheck)) {
3120             $count++;
3121             sleep 1;
3122         }
3123
3124         if ($count >= $timeout) {
3125             warn "VM still running - terminating now with SIGKILL\n";
3126             kill 9, $pid;
3127             sleep 1;
3128         }
3129
3130         vm_stop_cleanup($storecfg, $vmid, $conf, $keepActive) if $conf;
3131    });
3132 }
3133
3134 sub vm_suspend {
3135     my ($vmid, $skiplock) = @_;
3136
3137     lock_config($vmid, sub {
3138
3139         my $conf = load_config($vmid);
3140
3141         check_lock($conf) if !$skiplock;
3142
3143         vm_mon_cmd($vmid, "stop");
3144     });
3145 }
3146
3147 sub vm_resume {
3148     my ($vmid, $skiplock) = @_;
3149
3150     lock_config($vmid, sub {
3151
3152         my $conf = load_config($vmid);
3153
3154         check_lock($conf) if !$skiplock;
3155
3156         vm_mon_cmd($vmid, "cont");
3157     });
3158 }
3159
3160 sub vm_sendkey {
3161     my ($vmid, $skiplock, $key) = @_;
3162
3163     lock_config($vmid, sub {
3164
3165         my $conf = load_config($vmid);
3166
3167         # there is no qmp command, so we use the human monitor command
3168         vm_human_monitor_command($vmid, "sendkey $key");
3169     });
3170 }
3171
3172 sub vm_destroy {
3173     my ($storecfg, $vmid, $skiplock) = @_;
3174
3175     lock_config($vmid, sub {
3176
3177         my $conf = load_config($vmid);
3178
3179         check_lock($conf) if !$skiplock;
3180
3181         if (!check_running($vmid)) {
3182             fairsched_rmnod($vmid); # try to destroy group
3183             destroy_vm($storecfg, $vmid);
3184         } else {
3185             die "VM $vmid is running - destroy failed\n";
3186         }
3187     });
3188 }
3189
3190 # pci helpers
3191
3192 sub file_write {
3193     my ($filename, $buf) = @_;
3194
3195     my $fh = IO::File->new($filename, "w");
3196     return undef if !$fh;
3197
3198     my $res = print $fh $buf;
3199
3200     $fh->close();
3201
3202     return $res;
3203 }
3204
3205 sub pci_device_info {
3206     my ($name) = @_;
3207
3208     my $res;
3209
3210     return undef if $name !~ m/^([a-f0-9]{4}):([a-f0-9]{2}):([a-f0-9]{2})\.([a-f0-9])$/;
3211     my ($domain, $bus, $slot, $func) = ($1, $2, $3, $4);
3212
3213     my $irq = file_read_firstline("$pcisysfs/devices/$name/irq");
3214     return undef if !defined($irq) || $irq !~ m/^\d+$/;
3215
3216     my $vendor = file_read_firstline("$pcisysfs/devices/$name/vendor");
3217     return undef if !defined($vendor) || $vendor !~ s/^0x//;
3218
3219     my $product = file_read_firstline("$pcisysfs/devices/$name/device");
3220     return undef if !defined($product) || $product !~ s/^0x//;
3221
3222     $res = {
3223         name => $name,
3224         vendor => $vendor,
3225         product => $product,
3226         domain => $domain,
3227         bus => $bus,
3228         slot => $slot,
3229         func => $func,
3230         irq => $irq,
3231         has_fl_reset => -f "$pcisysfs/devices/$name/reset" || 0,
3232     };
3233
3234     return $res;
3235 }
3236
3237 sub pci_dev_reset {
3238     my ($dev) = @_;
3239
3240     my $name = $dev->{name};
3241
3242     my $fn = "$pcisysfs/devices/$name/reset";
3243
3244     return file_write($fn, "1");
3245 }
3246
3247 sub pci_dev_bind_to_stub {
3248     my ($dev) = @_;
3249
3250     my $name = $dev->{name};
3251
3252     my $testdir = "$pcisysfs/drivers/pci-stub/$name";
3253     return 1 if -d $testdir;
3254
3255     my $data = "$dev->{vendor} $dev->{product}";
3256     return undef if !file_write("$pcisysfs/drivers/pci-stub/new_id", $data);
3257
3258     my $fn = "$pcisysfs/devices/$name/driver/unbind";
3259     if (!file_write($fn, $name)) {
3260         return undef if -f $fn;
3261     }
3262
3263     $fn = "$pcisysfs/drivers/pci-stub/bind";
3264     if (! -d $testdir) {
3265         return undef if !file_write($fn, $name);
3266     }
3267
3268     return -d $testdir;
3269 }
3270
3271 sub print_pci_addr {
3272     my ($id, $bridges) = @_;
3273
3274     my $res = '';
3275     my $devices = {
3276         #addr1 : ide,parallel,serial (motherboard)
3277         #addr2 : first videocard
3278         balloon0 => { bus => 0, addr => 3 },
3279         watchdog => { bus => 0, addr => 4 },
3280         scsihw0 => { bus => 0, addr => 5 },
3281         scsihw1 => { bus => 0, addr => 6 },
3282         ahci0 => { bus => 0, addr => 7 },
3283         qga0 => { bus => 0, addr => 8 },
3284         virtio0 => { bus => 0, addr => 10 },
3285         virtio1 => { bus => 0, addr => 11 },
3286         virtio2 => { bus => 0, addr => 12 },
3287         virtio3 => { bus => 0, addr => 13 },
3288         virtio4 => { bus => 0, addr => 14 },
3289         virtio5 => { bus => 0, addr => 15 },
3290         hostpci0 => { bus => 0, addr => 16 },
3291         hostpci1 => { bus => 0, addr => 17 },
3292         net0 => { bus => 0, addr => 18 },
3293         net1 => { bus => 0, addr => 19 },
3294         net2 => { bus => 0, addr => 20 },
3295         net3 => { bus => 0, addr => 21 },
3296         net4 => { bus => 0, addr => 22 },
3297         net5 => { bus => 0, addr => 23 },
3298         #addr29 : usb-host (pve-usb.cfg)
3299         'pci.1' => { bus => 0, addr => 30 },
3300         'pci.2' => { bus => 0, addr => 31 },
3301         'net6' => { bus => 1, addr => 1 },
3302         'net7' => { bus => 1, addr => 2 },
3303         'net8' => { bus => 1, addr => 3 },
3304         'net9' => { bus => 1, addr => 4 },
3305         'net10' => { bus => 1, addr => 5 },
3306         'net11' => { bus => 1, addr => 6 },
3307         'net12' => { bus => 1, addr => 7 },
3308         'net13' => { bus => 1, addr => 8 },
3309         'net14' => { bus => 1, addr => 9 },
3310         'net15' => { bus => 1, addr => 10 },
3311         'net16' => { bus => 1, addr => 11 },
3312         'net17' => { bus => 1, addr => 12 },
3313         'net18' => { bus => 1, addr => 13 },
3314         'net19' => { bus => 1, addr => 14 },
3315         'net20' => { bus => 1, addr => 15 },
3316         'net21' => { bus => 1, addr => 16 },
3317         'net22' => { bus => 1, addr => 17 },
3318         'net23' => { bus => 1, addr => 18 },
3319         'net24' => { bus => 1, addr => 19 },
3320         'net25' => { bus => 1, addr => 20 },
3321         'net26' => { bus => 1, addr => 21 },
3322         'net27' => { bus => 1, addr => 22 },
3323         'net28' => { bus => 1, addr => 23 },
3324         'net29' => { bus => 1, addr => 24 },
3325         'net30' => { bus => 1, addr => 25 },
3326         'net31' => { bus => 1, addr => 26 },
3327         'virtio6' => { bus => 2, addr => 1 },
3328         'virtio7' => { bus => 2, addr => 2 },
3329         'virtio8' => { bus => 2, addr => 3 },
3330         'virtio9' => { bus => 2, addr => 4 },
3331         'virtio10' => { bus => 2, addr => 5 },
3332         'virtio11' => { bus => 2, addr => 6 },
3333         'virtio12' => { bus => 2, addr => 7 },
3334         'virtio13' => { bus => 2, addr => 8 },
3335         'virtio14' => { bus => 2, addr => 9 },
3336         'virtio15' => { bus => 2, addr => 10 },
3337     };
3338
3339     if (defined($devices->{$id}->{bus}) && defined($devices->{$id}->{addr})) {
3340            my $addr = sprintf("0x%x", $devices->{$id}->{addr});
3341            my $bus = $devices->{$id}->{bus};
3342            $res = ",bus=pci.$bus,addr=$addr";
3343            $bridges->{$bus} = 1 if $bridges;
3344     }
3345     return $res;
3346
3347 }
3348
3349 sub vm_balloonset {
3350     my ($vmid, $value) = @_;
3351
3352     vm_mon_cmd($vmid, "balloon", value => $value);
3353 }
3354
3355 # vzdump restore implementaion
3356
3357 sub archive_read_firstfile {
3358     my $archive = shift;
3359
3360     die "ERROR: file '$archive' does not exist\n" if ! -f $archive;
3361
3362     # try to detect archive type first
3363     my $pid = open (TMP, "tar tf '$archive'|") ||
3364         die "unable to open file '$archive'\n";
3365     my $firstfile = <TMP>;
3366     kill 15, $pid;
3367     close TMP;
3368
3369     die "ERROR: archive contaions no data\n" if !$firstfile;
3370     chomp $firstfile;
3371
3372     return $firstfile;
3373 }
3374
3375 sub restore_cleanup {
3376     my $statfile = shift;
3377
3378     print STDERR "starting cleanup\n";
3379
3380     if (my $fd = IO::File->new($statfile, "r")) {
3381         while (defined(my $line = <$fd>)) {
3382             if ($line =~ m/vzdump:([^\s:]*):(\S+)$/) {
3383                 my $volid = $2;
3384                 eval {
3385                     if ($volid =~ m|^/|) {
3386                         unlink $volid || die 'unlink failed\n';
3387                     } else {
3388                         my $cfg = cfs_read_file('storage.cfg');
3389                         PVE::Storage::vdisk_free($cfg, $volid);
3390                     }
3391                     print STDERR "temporary volume '$volid' sucessfuly removed\n";
3392                 };
3393                 print STDERR "unable to cleanup '$volid' - $@" if $@;
3394             } else {
3395                 print STDERR "unable to parse line in statfile - $line";
3396             }
3397         }
3398         $fd->close();
3399     }
3400 }
3401
3402 sub restore_archive {
3403     my ($archive, $vmid, $user, $opts) = @_;
3404
3405     if ($archive ne '-') {
3406         my $firstfile = archive_read_firstfile($archive);
3407         die "ERROR: file '$archive' dos not lock like a QemuServer vzdump backup\n"
3408             if $firstfile ne 'qemu-server.conf';
3409     }
3410
3411     my $tocmd = "/usr/lib/qemu-server/qmextract";
3412
3413     $tocmd .= " --storage " . PVE::Tools::shellquote($opts->{storage}) if $opts->{storage};
3414     $tocmd .= " --pool " . PVE::Tools::shellquote($opts->{pool}) if $opts->{pool};
3415     $tocmd .= ' --prealloc' if $opts->{prealloc};
3416     $tocmd .= ' --info' if $opts->{info};
3417
3418     # tar option "xf" does not autodetect compression when read from STDIN,
3419     # so we pipe to zcat
3420     my $cmd = "zcat -f|tar xf " . PVE::Tools::shellquote($archive) . " " .
3421         PVE::Tools::shellquote("--to-command=$tocmd");
3422
3423     my $tmpdir = "/var/tmp/vzdumptmp$$";
3424     mkpath $tmpdir;
3425
3426     local $ENV{VZDUMP_TMPDIR} = $tmpdir;
3427     local $ENV{VZDUMP_VMID} = $vmid;
3428     local $ENV{VZDUMP_USER} = $user;
3429
3430     my $conffile = PVE::QemuServer::config_file($vmid);
3431     my $tmpfn = "$conffile.$$.tmp";
3432
3433     # disable interrupts (always do cleanups)
3434     local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = sub {
3435         print STDERR "got interrupt - ignored\n";
3436     };
3437
3438     eval {
3439         # enable interrupts
3440         local $SIG{INT} = $SIG{TERM} = $SIG{QUIT} = $SIG{HUP} = $SIG{PIPE} = sub {
3441             die "interrupted by signal\n";
3442         };
3443
3444         if ($archive eq '-') {
3445             print "extracting archive from STDIN\n";
3446             run_command($cmd, input => "<&STDIN");
3447         } else {
3448             print "extracting archive '$archive'\n";
3449             run_command($cmd);
3450         }
3451
3452         return if $opts->{info};
3453
3454         # read new mapping
3455         my $map = {};
3456         my $statfile = "$tmpdir/qmrestore.stat";
3457         if (my $fd = IO::File->new($statfile, "r")) {
3458             while (defined (my $line = <$fd>)) {
3459                 if ($line =~ m/vzdump:([^\s:]*):(\S+)$/) {
3460                     $map->{$1} = $2 if $1;
3461                 } else {
3462                     print STDERR "unable to parse line in statfile - $line\n";
3463                 }
3464             }
3465             $fd->close();
3466         }
3467
3468         my $confsrc = "$tmpdir/qemu-server.conf";
3469
3470         my $srcfd = new IO::File($confsrc, "r") ||
3471             die "unable to open file '$confsrc'\n";
3472
3473         my $outfd = new IO::File ($tmpfn, "w") ||
3474             die "unable to write config for VM $vmid\n";
3475
3476         my $netcount = 0;
3477
3478         while (defined (my $line = <$srcfd>)) {
3479             next if $line =~ m/^\#vzdump\#/;
3480             next if $line =~ m/^lock:/;
3481             next if $line =~ m/^unused\d+:/;
3482
3483             if (($line =~ m/^(vlan(\d+)):\s*(\S+)\s*$/)) {
3484                 # try to convert old 1.X settings
3485                 my ($id, $ind, $ethcfg) = ($1, $2, $3);
3486                 foreach my $devconfig (PVE::Tools::split_list($ethcfg)) {
3487                     my ($model, $macaddr) = split(/\=/, $devconfig);
3488                     $macaddr = PVE::Tools::random_ether_addr() if !$macaddr || $opts->{unique};
3489                     my $net = {
3490                         model => $model,
3491                         bridge => "vmbr$ind",
3492                         macaddr => $macaddr,
3493                     };
3494                     my $netstr = print_net($net);
3495                     print $outfd "net${netcount}: $netstr\n";
3496                     $netcount++;
3497                 }
3498             } elsif (($line =~ m/^(net\d+):\s*(\S+)\s*$/) && ($opts->{unique})) {
3499                 my ($id, $netstr) = ($1, $2);
3500                 my $net = parse_net($netstr);
3501                 $net->{macaddr} = PVE::Tools::random_ether_addr() if $net->{macaddr};
3502                 $netstr = print_net($net);
3503                 print $outfd "$id: $netstr\n";
3504             } elsif ($line =~ m/^((ide|scsi|virtio)\d+):\s*(\S+)\s*$/) {
3505                 my $virtdev = $1;
3506                 my $value = $2;
3507                 if ($line =~ m/backup=no/) {
3508                     print $outfd "#$line";
3509                 } elsif ($virtdev && $map->{$virtdev}) {
3510                     my $di = PVE::QemuServer::parse_drive($virtdev, $value);
3511                     $di->{file} = $map->{$virtdev};
3512                     $value = PVE::QemuServer::print_drive($vmid, $di);
3513                     print $outfd "$virtdev: $value\n";
3514                 } else {
3515                     print $outfd $line;
3516                 }
3517             } else {
3518                 print $outfd $line;
3519             }
3520         }
3521
3522         $srcfd->close();
3523         $outfd->close();
3524     };
3525     my $err = $@;
3526
3527     if ($err) {
3528
3529         unlink $tmpfn;
3530
3531         restore_cleanup("$tmpdir/qmrestore.stat") if !$opts->{info};
3532
3533         die $err;
3534     }
3535
3536     rmtree $tmpdir;
3537
3538     rename $tmpfn, $conffile ||
3539         die "unable to commit configuration file '$conffile'\n";
3540 };
3541
3542
3543 # Internal snapshots
3544
3545 # NOTE: Snapshot create/delete involves several non-atomic
3546 # action, and can take a long time.
3547 # So we try to avoid locking the file and use 'lock' variable
3548 # inside the config file instead.
3549
3550 my $snapshot_copy_config = sub {
3551     my ($source, $dest) = @_;
3552
3553     foreach my $k (keys %$source) {
3554         next if $k eq 'snapshots';
3555         next if $k eq 'snapstate';
3556         next if $k eq 'snaptime';
3557         next if $k eq 'vmstate';
3558         next if $k eq 'lock';
3559         next if $k eq 'digest';
3560         next if $k eq 'description';
3561         next if $k =~ m/^unused\d+$/;
3562
3563         $dest->{$k} = $source->{$k};
3564     }
3565 };
3566
3567 my $snapshot_apply_config = sub {
3568     my ($conf, $snap) = @_;
3569
3570     # copy snapshot list
3571     my $newconf = {
3572         snapshots => $conf->{snapshots},
3573     };
3574
3575     # keep description and list of unused disks
3576     foreach my $k (keys %$conf) {
3577         next if !($k =~ m/^unused\d+$/ || $k eq 'description');
3578         $newconf->{$k} = $conf->{$k};
3579     }
3580
3581     &$snapshot_copy_config($snap, $newconf);
3582
3583     return $newconf;
3584 };
3585
3586 sub foreach_writable_storage {
3587     my ($conf, $func) = @_;
3588
3589     my $sidhash = {};
3590
3591     foreach my $ds (keys %$conf) {
3592         next if !valid_drivename($ds);
3593
3594         my $drive = parse_drive($ds, $conf->{$ds});
3595         next if !$drive;
3596         next if drive_is_cdrom($drive);
3597
3598         my $volid = $drive->{file};
3599
3600         my ($sid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
3601         $sidhash->{$sid} = $sid if $sid;
3602     }
3603
3604     foreach my $sid (sort keys %$sidhash) {
3605         &$func($sid);
3606     }
3607 }
3608
3609 my $alloc_vmstate_volid = sub {
3610     my ($storecfg, $vmid, $conf, $snapname) = @_;
3611
3612     # Note: we try to be smart when selecting a $target storage
3613
3614     my $target;
3615
3616     # search shared storage first
3617     foreach_writable_storage($conf, sub {
3618         my ($sid) = @_;
3619         my $scfg = PVE::Storage::storage_config($storecfg, $sid);
3620         return if !$scfg->{shared};
3621
3622         $target = $sid if !$target || $scfg->{path}; # prefer file based storage
3623     });
3624
3625     if (!$target) {
3626         # now search local storage
3627         foreach_writable_storage($conf, sub {
3628             my ($sid) = @_;
3629             my $scfg = PVE::Storage::storage_config($storecfg, $sid);
3630             return if $scfg->{shared};
3631
3632             $target = $sid if !$target || $scfg->{path}; # prefer file based storage;
3633         });
3634     }
3635
3636     $target = 'local' if !$target;
3637
3638     my $driver_state_size = 32; # assume 32MB is enough to safe all driver state;
3639     my $size = $conf->{memory} + $driver_state_size;
3640
3641     my $name = "vm-$vmid-state-$snapname";
3642     my $scfg = PVE::Storage::storage_config($storecfg, $target);
3643     $name .= ".raw" if $scfg->{path}; # add filename extension for file base storage
3644     my $volid = PVE::Storage::vdisk_alloc($storecfg, $target, $vmid, 'raw', $name, $size*1024);
3645
3646     return $volid;
3647 };
3648
3649 my $snapshot_prepare = sub {
3650     my ($vmid, $snapname, $save_vmstate, $comment) = @_;
3651
3652     my $snap;
3653
3654     my $updatefn =  sub {
3655
3656         my $conf = load_config($vmid);
3657
3658         check_lock($conf);
3659
3660         $conf->{lock} = 'snapshot';
3661
3662         die "snapshot name '$snapname' already used\n"
3663             if defined($conf->{snapshots}->{$snapname});
3664
3665         my $storecfg = PVE::Storage::config();
3666
3667         foreach_drive($conf, sub {
3668             my ($ds, $drive) = @_;
3669
3670             return if drive_is_cdrom($drive);
3671             my $volid = $drive->{file};
3672
3673             my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
3674             if ($storeid) {
3675                 my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
3676                 die "can't snapshot volume '$volid'\n"
3677                     if !(($scfg->{path} && $volname =~ m/\.qcow2$/) ||
3678                          ($scfg->{type} eq 'nexenta') ||
3679                          ($scfg->{type} eq 'rbd') ||
3680                          ($scfg->{type} eq 'sheepdog'));
3681             } elsif ($volid =~ m|^(/.+)$| && -e $volid) {
3682                 die "snapshot device '$volid' is not possible\n";
3683             } else {
3684                 die "can't snapshot volume '$volid'\n";
3685             }
3686         });
3687
3688
3689         $snap = $conf->{snapshots}->{$snapname} = {};
3690
3691         if ($save_vmstate && check_running($vmid)) {
3692             $snap->{vmstate} = &$alloc_vmstate_volid($storecfg, $vmid, $conf, $snapname);
3693         }
3694
3695         &$snapshot_copy_config($conf, $snap);
3696
3697         $snap->{snapstate} = "prepare";
3698         $snap->{snaptime} = time();
3699         $snap->{description} = $comment if $comment;
3700
3701         update_config_nolock($vmid, $conf, 1);
3702     };
3703
3704     lock_config($vmid, $updatefn);
3705
3706     return $snap;
3707 };
3708
3709 my $snapshot_commit = sub {
3710     my ($vmid, $snapname) = @_;
3711
3712     my $updatefn = sub {
3713
3714         my $conf = load_config($vmid);
3715
3716         die "missing snapshot lock\n"
3717             if !($conf->{lock} && $conf->{lock} eq 'snapshot');
3718
3719         my $snap = $conf->{snapshots}->{$snapname};
3720
3721         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3722
3723         die "wrong snapshot state\n"
3724             if !($snap->{snapstate} && $snap->{snapstate} eq "prepare");
3725
3726         delete $snap->{snapstate};
3727         delete $conf->{lock};
3728
3729         my $newconf = &$snapshot_apply_config($conf, $snap);
3730
3731         $newconf->{parent} = $snapname;
3732
3733         update_config_nolock($vmid, $newconf, 1);
3734     };
3735
3736     lock_config($vmid, $updatefn);
3737 };
3738
3739 sub snapshot_rollback {
3740     my ($vmid, $snapname) = @_;
3741
3742     my $snap;
3743
3744     my $prepare = 1;
3745
3746     my $storecfg = PVE::Storage::config();
3747
3748     my $updatefn = sub {
3749
3750         my $conf = load_config($vmid);
3751
3752         $snap = $conf->{snapshots}->{$snapname};
3753
3754         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3755
3756         die "unable to rollback to incomplete snapshot (snapstate = $snap->{snapstate})\n"
3757             if $snap->{snapstate};
3758
3759         if ($prepare) {
3760             check_lock($conf);
3761             vm_stop($storecfg, $vmid, undef, undef, 5, undef, undef);
3762         }
3763
3764         die "unable to rollback vm $vmid: vm is running\n"
3765             if check_running($vmid);
3766
3767         if ($prepare) {
3768             $conf->{lock} = 'rollback';
3769         } else {
3770             die "got wrong lock\n" if !($conf->{lock} && $conf->{lock} eq 'rollback');
3771             delete $conf->{lock};
3772         }
3773
3774         if (!$prepare) {
3775             # copy snapshot config to current config
3776             $conf = &$snapshot_apply_config($conf, $snap);
3777             $conf->{parent} = $snapname;
3778         }
3779
3780         update_config_nolock($vmid, $conf, 1);
3781
3782         if (!$prepare && $snap->{vmstate}) {
3783             my $statefile = PVE::Storage::path($storecfg, $snap->{vmstate});
3784             # fixme: this only forws for files currently
3785             vm_start($storecfg, $vmid, $statefile);
3786         }
3787
3788     };
3789
3790     lock_config($vmid, $updatefn);
3791
3792     foreach_drive($snap, sub {
3793         my ($ds, $drive) = @_;
3794
3795         return if drive_is_cdrom($drive);
3796
3797         my $volid = $drive->{file};
3798         my $device = "drive-$ds";
3799
3800         PVE::Storage::volume_snapshot_rollback($storecfg, $volid, $snapname);
3801     });
3802
3803     $prepare = 0;
3804     lock_config($vmid, $updatefn);
3805 }
3806
3807 sub snapshot_create {
3808     my ($vmid, $snapname, $save_vmstate, $freezefs, $comment) = @_;
3809
3810     my $snap = &$snapshot_prepare($vmid, $snapname, $save_vmstate, $comment);
3811
3812     $freezefs = $save_vmstate = 0 if !$snap->{vmstate}; # vm is not running
3813
3814     my $drivehash = {};
3815
3816     my $running = check_running($vmid);
3817
3818     eval {
3819         # create internal snapshots of all drives
3820
3821         my $storecfg = PVE::Storage::config();
3822
3823         if ($running) {
3824             if ($snap->{vmstate}) {
3825                 my $path = PVE::Storage::path($storecfg, $snap->{vmstate});
3826                 vm_mon_cmd($vmid, "snapshot-start", statefile => $path);
3827             } else {
3828                 vm_mon_cmd($vmid, "snapshot-start");
3829             }
3830         };
3831
3832         qga_freezefs($vmid) if $running && $freezefs;
3833
3834         foreach_drive($snap, sub {
3835             my ($ds, $drive) = @_;
3836
3837             return if drive_is_cdrom($drive);
3838
3839             my $volid = $drive->{file};
3840             my $device = "drive-$ds";
3841
3842             qemu_volume_snapshot($vmid, $device, $storecfg, $volid, $snapname);
3843             $drivehash->{$ds} = 1;
3844        });
3845     };
3846     my $err = $@;
3847
3848     eval { gqa_unfreezefs($vmid) if $running && $freezefs; };
3849     warn $@ if $@;
3850
3851     eval { vm_mon_cmd($vmid, "snapshot-end") if $running; };
3852     warn $@ if $@;
3853
3854     if ($err) {
3855         warn "snapshot create failed: starting cleanup\n";
3856         eval { snapshot_delete($vmid, $snapname, 0, $drivehash); };
3857         warn $@ if $@;
3858         die $err;
3859     }
3860
3861     &$snapshot_commit($vmid, $snapname);
3862 }
3863
3864 # Note: $drivehash is only set when called from snapshot_create.
3865 sub snapshot_delete {
3866     my ($vmid, $snapname, $force, $drivehash) = @_;
3867
3868     my $prepare = 1;
3869
3870     my $snap;
3871     my $unused = [];
3872
3873     my $unlink_parent = sub {
3874         my ($confref, $new_parent) = @_;
3875
3876         if ($confref->{parent} && $confref->{parent} eq $snapname) {
3877             if ($new_parent) {
3878                 $confref->{parent} = $new_parent;
3879             } else {
3880                 delete $confref->{parent};
3881             }
3882         }
3883     };
3884
3885     my $updatefn =  sub {
3886         my ($remove_drive) = @_;
3887
3888         my $conf = load_config($vmid);
3889
3890         check_lock($conf) if !$drivehash;
3891
3892         $snap = $conf->{snapshots}->{$snapname};
3893
3894         die "snapshot '$snapname' does not exist\n" if !defined($snap);
3895
3896         # remove parent refs
3897         &$unlink_parent($conf, $snap->{parent});
3898         foreach my $sn (keys %{$conf->{snapshots}}) {
3899             next if $sn eq $snapname;
3900             &$unlink_parent($conf->{snapshots}->{$sn}, $snap->{parent});
3901         }
3902
3903         if ($remove_drive) {
3904             if ($remove_drive eq 'vmstate') {
3905                 delete $snap->{$remove_drive};
3906             } else {
3907                 my $drive = parse_drive($remove_drive, $snap->{$remove_drive});
3908                 my $volid = $drive->{file};
3909                 delete $snap->{$remove_drive};
3910                 add_unused_volume($conf, $volid);
3911             }
3912         }
3913
3914         if ($prepare) {
3915             $snap->{snapstate} = 'delete';
3916         } else {
3917             delete $conf->{snapshots}->{$snapname};
3918             delete $conf->{lock} if $drivehash;
3919             foreach my $volid (@$unused) {
3920                 add_unused_volume($conf, $volid);
3921             }
3922         }
3923
3924         update_config_nolock($vmid, $conf, 1);
3925     };
3926
3927     lock_config($vmid, $updatefn);
3928
3929     # now remove vmstate file
3930
3931     my $storecfg = PVE::Storage::config();
3932
3933     if ($snap->{vmstate}) {
3934         eval {  PVE::Storage::vdisk_free($storecfg, $snap->{vmstate}); };
3935         if (my $err = $@) {
3936             die $err if !$force;
3937             warn $err;
3938         }
3939         # save changes (remove vmstate from snapshot)
3940         lock_config($vmid, $updatefn, 'vmstate') if !$force;
3941     };
3942
3943     # now remove all internal snapshots
3944     foreach_drive($snap, sub {
3945         my ($ds, $drive) = @_;
3946
3947         return if drive_is_cdrom($drive);
3948
3949         my $volid = $drive->{file};
3950         my $device = "drive-$ds";
3951
3952         if (!$drivehash || $drivehash->{$ds}) {
3953             eval { qemu_volume_snapshot_delete($vmid, $device, $storecfg, $volid, $snapname); };
3954             if (my $err = $@) {
3955                 die $err if !$force;
3956                 warn $err;
3957             }
3958         }
3959
3960         # save changes (remove drive fron snapshot)
3961         lock_config($vmid, $updatefn, $ds) if !$force;
3962         push @$unused, $volid;
3963     });
3964
3965     # now cleanup config
3966     $prepare = 0;
3967     lock_config($vmid, $updatefn);
3968 }
3969
3970 1;