use strict;
use warnings;
+use PVE::AbstractConfig;
+use PVE::INotify;
+use PVE::QemuServer::Helpers;
+use PVE::QemuServer::Monitor qw(mon_cmd);
+use PVE::QemuServer;
+use PVE::QemuServer::Machine;
+use PVE::Storage;
+use PVE::Tools;
+
use base qw(PVE::AbstractConfig);
my $nodename = PVE::INotify::nodename();
mkdir "/etc/pve/nodes/$nodename";
-my $confdir = "/etc/pve/nodes/$nodename/qemu-server";
-mkdir $confdir;
+mkdir "/etc/pve/nodes/$nodename/qemu-server";
my $lock_dir = "/var/lock/qemu-server";
mkdir $lock_dir;
-my $MAX_UNUSED_DISKS = 8;
+my $MAX_UNUSED_DISKS = 256;
+
+sub assert_config_exists_on_node {
+ my ($vmid, $node) = @_;
+
+ $node //= $nodename;
+
+ my $filename = __PACKAGE__->config_file($vmid, $node);
+ my $exists = -f $filename;
+
+ my $type = guest_type();
+ die "unable to find configuration file for $type $vmid on node '$node'\n"
+ if !$exists;
+}
# BEGIN implemented abstract methods from PVE::AbstractConfig
}
sub __config_max_unused_disks {
- my ($class) =@_;
+ my ($class) = @_;
return $MAX_UNUSED_DISKS;
}
return "nodes/$node/qemu-server/$vmid.conf";
}
+sub has_feature {
+ my ($class, $feature, $conf, $storecfg, $snapname, $running, $backup_only) = @_;
+
+ my $err;
+ PVE::QemuServer::foreach_drive($conf, sub {
+ my ($ds, $drive) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+ return if $backup_only && defined($drive->{backup}) && !$drive->{backup};
+ my $volid = $drive->{file};
+ $err = 1 if !PVE::Storage::volume_has_feature($storecfg, $feature, $volid, $snapname, $running);
+ });
+
+ return $err ? 0 : 1;
+}
+
+sub get_replicatable_volumes {
+ my ($class, $storecfg, $vmid, $conf, $cleanup, $noerr) = @_;
+
+ my $volhash = {};
+
+ my $test_volid = sub {
+ my ($volid, $attr) = @_;
+
+ return if $attr->{cdrom};
+
+ return if !$cleanup && !$attr->{replicate};
+
+ if ($volid =~ m|^/|) {
+ return if !$attr->{replicate};
+ return if $cleanup || $noerr;
+ die "unable to replicate local file/device '$volid'\n";
+ }
+
+ my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid, $noerr);
+ return if !$storeid;
+
+ my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
+ return if $scfg->{shared};
+
+ my ($path, $owner, $vtype) = PVE::Storage::path($storecfg, $volid);
+ return if !$owner || ($owner != $vmid);
+
+ if ($vtype ne 'images') {
+ return if $cleanup || $noerr;
+ die "unable to replicate volume '$volid', type '$vtype'\n";
+ }
+
+ if (!PVE::Storage::volume_has_feature($storecfg, 'replicate', $volid)) {
+ return if $cleanup || $noerr;
+ die "missing replicate feature on volume '$volid'\n";
+ }
+
+ $volhash->{$volid} = 1;
+ };
+
+ PVE::QemuServer::foreach_volid($conf, $test_volid);
+
+ # add 'unusedX' volumes to volhash
+ foreach my $key (keys %$conf) {
+ if ($key =~ m/^unused/) {
+ $test_volid->($conf->{$key}, { replicate => 1 });
+ }
+ }
+
+ return $volhash;
+}
+
+sub __snapshot_save_vmstate {
+ my ($class, $vmid, $conf, $snapname, $storecfg, $statestorage, $suspend) = @_;
+
+ # first, use explicitly configured storage
+ # either directly via API, or via conf
+ my $target = $statestorage // $conf->{vmstatestorage};
+
+ if (!$target) {
+ my ($shared, $local);
+ PVE::QemuServer::foreach_storage_used_by_vm($conf, sub {
+ my ($sid) = @_;
+ my $scfg = PVE::Storage::storage_config($storecfg, $sid);
+ my $dst = $scfg->{shared} ? \$shared : \$local;
+ $$dst = $sid if !$$dst || $scfg->{path}; # prefer file based storage
+ });
+
+ # second, use shared storage where VM has at least one disk
+ # third, use local storage where VM has at least one disk
+ # fall back to local storage
+ $target = $shared // $local // 'local';
+ }
+
+ my $defaults = PVE::QemuServer::load_defaults();
+ my $mem_size = $conf->{memory} // $defaults->{memory};
+ my $driver_state_size = 500; # assume 500MB is enough to safe all driver state;
+ # our savevm-start does live-save of the memory until the space left in the
+ # volume is just enough for the remaining memory content + internal state
+ # then it stops the vm and copies the rest so we reserve twice the
+ # memory content + state to minimize vm downtime
+ my $size = $mem_size*2 + $driver_state_size;
+ my $scfg = PVE::Storage::storage_config($storecfg, $target);
+
+ my $name = "vm-$vmid-state-$snapname";
+ $name .= ".raw" if $scfg->{path}; # add filename extension for file base storage
+
+ my $statefile = PVE::Storage::vdisk_alloc($storecfg, $target, $vmid, 'raw', $name, $size*1024);
+ my $runningmachine = PVE::QemuServer::Machine::get_current_qemu_machine($vmid);
+
+ if ($suspend) {
+ $conf->{vmstate} = $statefile;
+ $conf->{runningmachine} = $runningmachine;
+ } else {
+ my $snap = $conf->{snapshots}->{$snapname};
+ $snap->{vmstate} = $statefile;
+ $snap->{runningmachine} = $runningmachine;
+ }
+
+ return $statefile;
+}
+
+sub __snapshot_check_running {
+ my ($class, $vmid) = @_;
+ return PVE::QemuServer::Helpers::vm_running_locally($vmid);
+}
+
+sub __snapshot_check_freeze_needed {
+ my ($class, $vmid, $config, $save_vmstate) = @_;
+
+ my $running = $class->__snapshot_check_running($vmid);
+ if (!$save_vmstate) {
+ return ($running, $running && PVE::QemuServer::parse_guest_agent($config)->{enabled} && PVE::QemuServer::qga_check_running($vmid));
+ } else {
+ return ($running, 0);
+ }
+}
+
+sub __snapshot_freeze {
+ my ($class, $vmid, $unfreeze) = @_;
+
+ if ($unfreeze) {
+ eval { mon_cmd($vmid, "guest-fsfreeze-thaw"); };
+ warn "guest-fsfreeze-thaw problems - $@" if $@;
+ } else {
+ eval { mon_cmd($vmid, "guest-fsfreeze-freeze"); };
+ warn "guest-fsfreeze-freeze problems - $@" if $@;
+ }
+}
+
+sub __snapshot_create_vol_snapshots_hook {
+ my ($class, $vmid, $snap, $running, $hook) = @_;
+
+ if ($running) {
+ my $storecfg = PVE::Storage::config();
+
+ if ($hook eq "before") {
+ if ($snap->{vmstate}) {
+ my $path = PVE::Storage::path($storecfg, $snap->{vmstate});
+ PVE::Storage::activate_volumes($storecfg, [$snap->{vmstate}]);
+
+ mon_cmd($vmid, "savevm-start", statefile => $path);
+ for(;;) {
+ my $stat = mon_cmd($vmid, "query-savevm");
+ if (!$stat->{status}) {
+ die "savevm not active\n";
+ } elsif ($stat->{status} eq 'active') {
+ sleep(1);
+ next;
+ } elsif ($stat->{status} eq 'completed') {
+ last;
+ } else {
+ die "query-savevm returned status '$stat->{status}'\n";
+ }
+ }
+ } else {
+ mon_cmd($vmid, "savevm-start");
+ }
+ } elsif ($hook eq "after") {
+ eval {
+ mon_cmd($vmid, "savevm-end");
+ PVE::Storage::deactivate_volumes($storecfg, [$snap->{vmstate}]) if $snap->{vmstate};
+ };
+ warn $@ if $@;
+ } elsif ($hook eq "after-freeze") {
+ # savevm-end is async, we need to wait
+ for (;;) {
+ my $stat = mon_cmd($vmid, "query-savevm");
+ if (!$stat->{bytes}) {
+ last;
+ } else {
+ print "savevm not yet finished\n";
+ sleep(1);
+ next;
+ }
+ }
+ }
+ }
+}
+
+sub __snapshot_create_vol_snapshot {
+ my ($class, $vmid, $ds, $drive, $snapname) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+
+ my $volid = $drive->{file};
+ my $device = "drive-$ds";
+ my $storecfg = PVE::Storage::config();
+
+ PVE::QemuServer::qemu_volume_snapshot($vmid, $device, $storecfg, $volid, $snapname);
+}
+
+sub __snapshot_delete_remove_drive {
+ my ($class, $snap, $remove_drive) = @_;
+
+ if ($remove_drive eq 'vmstate') {
+ delete $snap->{$remove_drive};
+ } else {
+ my $drive = PVE::QemuServer::parse_drive($remove_drive, $snap->{$remove_drive});
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+
+ my $volid = $drive->{file};
+ delete $snap->{$remove_drive};
+ $class->add_unused_volume($snap, $volid);
+ }
+}
+
+sub __snapshot_delete_vmstate_file {
+ my ($class, $snap, $force) = @_;
+
+ my $storecfg = PVE::Storage::config();
+
+ eval { PVE::Storage::vdisk_free($storecfg, $snap->{vmstate}); };
+ if (my $err = $@) {
+ die $err if !$force;
+ warn $err;
+ }
+}
+
+sub __snapshot_delete_vol_snapshot {
+ my ($class, $vmid, $ds, $drive, $snapname, $unused) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+ my $storecfg = PVE::Storage::config();
+ my $volid = $drive->{file};
+ my $device = "drive-$ds";
+
+ PVE::QemuServer::qemu_volume_snapshot_delete($vmid, $device, $storecfg, $volid, $snapname);
+
+ push @$unused, $volid;
+}
+
+sub __snapshot_rollback_hook {
+ my ($class, $vmid, $conf, $snap, $prepare, $data) = @_;
+
+ if ($prepare) {
+ # we save the machine of the current config
+ $data->{oldmachine} = $conf->{machine};
+ } else {
+ # if we have a 'runningmachine' entry in the snapshot we use that
+ # for the forcemachine parameter, else we use the old logic
+ if (defined($conf->{runningmachine})) {
+ $data->{forcemachine} = $conf->{runningmachine};
+ delete $conf->{runningmachine};
+ } else {
+ # Note: old code did not store 'machine', so we try to be smart
+ # and guess the snapshot was generated with kvm 1.4 (pc-i440fx-1.4).
+ $data->{forcemachine} = $conf->{machine} || 'pc-i440fx-1.4';
+
+ # we remove the 'machine' configuration if not explicitly specified
+ # in the original config.
+ delete $conf->{machine} if $snap->{vmstate} && !defined($data->{oldmachine});
+ }
+
+ if ($conf->{vmgenid}) {
+ # tell the VM that it's another generation, so it can react
+ # appropriately, e.g. dirty-mark copies of distributed databases or
+ # re-initializing its random number generator
+ $conf->{vmgenid} = PVE::QemuServer::generate_uuid();
+ }
+ }
+
+ return;
+}
+
+sub __snapshot_rollback_vol_possible {
+ my ($class, $drive, $snapname) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+
+ my $storecfg = PVE::Storage::config();
+ my $volid = $drive->{file};
+
+ PVE::Storage::volume_rollback_is_possible($storecfg, $volid, $snapname);
+}
+
+sub __snapshot_rollback_vol_rollback {
+ my ($class, $drive, $snapname) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+
+ my $storecfg = PVE::Storage::config();
+ PVE::Storage::volume_snapshot_rollback($storecfg, $drive->{file}, $snapname);
+}
+
+sub __snapshot_rollback_vm_stop {
+ my ($class, $vmid) = @_;
+
+ my $storecfg = PVE::Storage::config();
+ PVE::QemuServer::vm_stop($storecfg, $vmid, undef, undef, 5, undef, undef);
+}
+
+sub __snapshot_rollback_vm_start {
+ my ($class, $vmid, $vmstate, $data) = @_;
+
+ my $storecfg = PVE::Storage::config();
+ PVE::QemuServer::vm_start($storecfg, $vmid, $vmstate, undef, undef, undef, $data->{forcemachine});
+}
+
+sub __snapshot_rollback_get_unused {
+ my ($class, $conf, $snap) = @_;
+
+ my $unused = [];
+
+ $class->__snapshot_foreach_volume($conf, sub {
+ my ($vs, $volume) = @_;
+
+ return if PVE::QemuServer::drive_is_cdrom($volume);
+
+ my $found = 0;
+ my $volid = $volume->{file};
+
+ $class->__snapshot_foreach_volume($snap, sub {
+ my ($ds, $drive) = @_;
+
+ return if $found;
+ return if PVE::QemuServer::drive_is_cdrom($drive);
+
+ $found = 1
+ if ($drive->{file} && $drive->{file} eq $volid);
+ });
+
+ push @$unused, $volid if !$found;
+ });
+
+ return $unused;
+}
+
+sub __snapshot_foreach_volume {
+ my ($class, $conf, $func) = @_;
+
+ PVE::QemuServer::foreach_drive($conf, $func);
+}
# END implemented abstract methods from PVE::AbstractConfig
1;
projects / qemu-server.git / blobdiff