1 package PVE
::QemuConfig
;
6 use PVE
::AbstractConfig
;
12 use base
qw(PVE::AbstractConfig);
14 my $nodename = PVE
::INotify
::nodename
();
16 mkdir "/etc/pve/nodes/$nodename";
17 my $confdir = "/etc/pve/nodes/$nodename/qemu-server";
20 my $lock_dir = "/var/lock/qemu-server";
23 my $MAX_UNUSED_DISKS = 8;
25 # BEGIN implemented abstract methods from PVE::AbstractConfig
31 sub __config_max_unused_disks
{
34 return $MAX_UNUSED_DISKS;
37 sub config_file_lock
{
38 my ($class, $vmid) = @_;
40 return "$lock_dir/lock-$vmid.conf";
44 my ($class, $vmid, $node) = @_;
46 $node = $nodename if !$node;
47 return "nodes/$node/qemu-server/$vmid.conf";
51 my ($class, $feature, $conf, $storecfg, $snapname, $running, $backup_only) = @_;
54 PVE
::QemuServer
::foreach_drive
($conf, sub {
55 my ($ds, $drive) = @_;
57 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
58 return if $backup_only && !$drive->{backup
};
59 my $volid = $drive->{file
};
60 $err = 1 if !PVE
::Storage
::volume_has_feature
($storecfg, $feature, $volid, $snapname, $running);
66 sub __snapshot_save_vmstate
{
67 my ($class, $vmid, $conf, $snapname, $storecfg) = @_;
69 my $snap = $conf->{snapshots
}->{$snapname};
73 # search shared storage first
74 PVE
::QemuServer
::foreach_writable_storage
($conf, sub {
76 my $scfg = PVE
::Storage
::storage_config
($storecfg, $sid);
77 return if !$scfg->{shared
};
79 $target = $sid if !$target || $scfg->{path
}; # prefer file based storage
83 # now search local storage
84 PVE
::QemuServer
::foreach_writable_storage
($conf, sub {
86 my $scfg = PVE
::Storage
::storage_config
($storecfg, $sid);
87 return if $scfg->{shared
};
89 $target = $sid if !$target || $scfg->{path
}; # prefer file based storage;
93 $target = 'local' if !$target;
95 my $driver_state_size = 500; # assume 32MB is enough to safe all driver state;
96 # we abort live save after $conf->{memory}, so we need at max twice that space
97 my $size = $conf->{memory
}*2 + $driver_state_size;
99 my $name = "vm-$vmid-state-$snapname";
100 my $scfg = PVE
::Storage
::storage_config
($storecfg, $target);
101 $name .= ".raw" if $scfg->{path
}; # add filename extension for file base storage
102 $snap->{vmstate
} = PVE
::Storage
::vdisk_alloc
($storecfg, $target, $vmid, 'raw', $name, $size*1024);
103 # always overwrite machine if we save vmstate. This makes sure we
104 # can restore it later using correct machine type
105 $snap->{machine
} = PVE
::QemuServer
::get_current_qemu_machine
($vmid);
108 sub __snapshot_check_running
{
109 my ($class, $vmid) = @_;
110 return PVE
::QemuServer
::check_running
($vmid);
113 sub __snapshot_check_freeze_needed
{
114 my ($class, $vmid, $config, $save_vmstate) = @_;
116 my $running = $class->__snapshot_check_running($vmid);
118 return ($running, $running && $config->{agent
} && PVE
::QemuServer
::qga_check_running
($vmid));
120 return ($running, 0);
124 sub __snapshot_freeze
{
125 my ($class, $vmid, $unfreeze) = @_;
128 eval { PVE
::QemuServer
::vm_mon_cmd
($vmid, "guest-fsfreeze-thaw"); };
129 warn "guest-fsfreeze-thaw problems - $@" if $@;
131 eval { PVE
::QemuServer
::vm_mon_cmd
($vmid, "guest-fsfreeze-freeze"); };
132 warn "guest-fsfreeze-freeze problems - $@" if $@;
136 sub __snapshot_create_vol_snapshots_hook
{
137 my ($class, $vmid, $snap, $running, $hook) = @_;
140 if ($hook eq "before") {
141 if ($snap->{vmstate
}) {
142 my $storecfg = PVE
::Storage
::config
();
143 my $path = PVE
::Storage
::path
($storecfg, $snap->{vmstate
});
144 PVE
::QemuServer
::vm_mon_cmd
($vmid, "savevm-start", statefile
=> $path);
146 my $stat = PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "query-savevm");
147 if (!$stat->{status
}) {
148 die "savevm not active\n";
149 } elsif ($stat->{status
} eq 'active') {
152 } elsif ($stat->{status
} eq 'completed') {
155 die "query-savevm returned status '$stat->{status}'\n";
159 PVE
::QemuServer
::vm_mon_cmd
($vmid, "savevm-start");
161 } elsif ($hook eq "after") {
162 eval { PVE
::QemuServer
::vm_mon_cmd
($vmid, "savevm-end") };
164 } elsif ($hook eq "after-freeze") {
165 # savevm-end is async, we need to wait
167 my $stat = PVE
::QemuServer
::vm_mon_cmd_nocheck
($vmid, "query-savevm");
168 if (!$stat->{bytes
}) {
171 print "savevm not yet finished\n";
180 sub __snapshot_create_vol_snapshot
{
181 my ($class, $vmid, $ds, $drive, $snapname) = @_;
183 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
185 my $volid = $drive->{file
};
186 my $device = "drive-$ds";
187 my $storecfg = PVE
::Storage
::config
();
189 PVE
::QemuServer
::qemu_volume_snapshot
($vmid, $device, $storecfg, $volid, $snapname);
192 sub __snapshot_delete_remove_drive
{
193 my ($class, $snap, $remove_drive) = @_;
195 if ($remove_drive eq 'vmstate') {
196 delete $snap->{$remove_drive};
198 my $drive = PVE
::QemuServer
::parse_drive
($remove_drive, $snap->{$remove_drive});
199 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
201 my $volid = $drive->{file
};
202 delete $snap->{$remove_drive};
203 $class->add_unused_volume($snap, $volid);
207 sub __snapshot_delete_vmstate_file
{
208 my ($class, $snap, $force) = @_;
210 my $storecfg = PVE
::Storage
::config
();
212 eval { PVE
::Storage
::vdisk_free
($storecfg, $snap->{vmstate
}); };
219 sub __snapshot_delete_vol_snapshot
{
220 my ($class, $vmid, $ds, $drive, $snapname, $unused) = @_;
222 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
223 my $storecfg = PVE
::Storage
::config
();
224 my $volid = $drive->{file
};
225 my $device = "drive-$ds";
227 PVE
::QemuServer
::qemu_volume_snapshot_delete
($vmid, $device, $storecfg, $volid, $snapname);
229 push @$unused, $volid;
232 sub __snapshot_rollback_vol_possible
{
233 my ($class, $drive, $snapname) = @_;
235 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
237 my $storecfg = PVE
::Storage
::config
();
238 my $volid = $drive->{file
};
240 PVE
::Storage
::volume_rollback_is_possible
($storecfg, $volid, $snapname);
243 sub __snapshot_rollback_vol_rollback
{
244 my ($class, $drive, $snapname) = @_;
246 return if PVE
::QemuServer
::drive_is_cdrom
($drive);
248 my $storecfg = PVE
::Storage
::config
();
249 PVE
::Storage
::volume_snapshot_rollback
($storecfg, $drive->{file
}, $snapname);
252 sub __snapshot_rollback_vm_stop
{
253 my ($class, $vmid) = @_;
255 my $storecfg = PVE
::Storage
::config
();
256 PVE
::QemuServer
::vm_stop
($storecfg, $vmid, undef, undef, 5, undef, undef);
259 sub __snapshot_rollback_vm_start
{
260 my ($class, $vmid, $vmstate, $forcemachine) = @_;
262 my $storecfg = PVE
::Storage
::config
();
263 my $statefile = PVE
::Storage
::path
($storecfg, $vmstate);
264 PVE
::QemuServer
::vm_start
($storecfg, $vmid, $statefile, undef, undef, undef, $forcemachine);
267 sub __snapshot_foreach_volume
{
268 my ($class, $conf, $func) = @_;
270 PVE
::QemuServer
::foreach_drive
($conf, $func);
272 # END implemented abstract methods from PVE::AbstractConfig