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api: move disk: fork before locking

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using the familiar early+repeated checks pattern from other API calls.
Only intended functional changes are with regard to locking/forking.

Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
This commit is contained in:
Fabian Ebner 2022-01-27 15:01:54 +01:00 committed by Fabian Grünbichler
parent dbecb46f2a
commit bdf6ba1e7d
1 changed files with 85 additions and 75 deletions
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26
PVE/API2/Qemu.pm
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@ -3396,7 +3396,7 @@ __PACKAGE__->register_method({
my $storecfg = PVE::Storage::config();
my $move_updatefn = sub {
my $load_and_check_move = sub {
my $conf = PVE::QemuConfig->load_config($vmid);
PVE::QemuConfig->check_lock($conf);
@ -3416,8 +3416,8 @@ __PACKAGE__->register_method({
$oldfmt = $1;
}
die "you can't move to the same storage with same format\n" if $oldstoreid eq $storeid &&
(!$format || !$oldfmt || $oldfmt eq $format);
die "you can't move to the same storage with same format\n"
if $oldstoreid eq $storeid && (!$format || !$oldfmt || $oldfmt eq $format);
# this only checks snapshots because $disk is passed!
my $snapshotted = PVE::QemuServer::Drive::is_volume_in_use(
@ -3429,6 +3429,13 @@ __PACKAGE__->register_method({
die "you can't move a disk with snapshots and delete the source\n"
if $snapshotted && $param->{delete};
return ($conf, $drive, $oldstoreid, $snapshotted);
};
my $move_updatefn = sub {
my ($conf, $drive, $oldstoreid, $snapshotted) = $load_and_check_move->();
my $old_volid = $drive->{file};
PVE::Cluster::log_msg(
'info',
$authuser,
@ -3439,7 +3446,6 @@ __PACKAGE__->register_method({
PVE::Storage::activate_volumes($storecfg, [ $drive->{file} ]);
my $realcmd = sub {
my $newvollist = [];
eval {
@ -3515,9 +3521,6 @@ __PACKAGE__->register_method({
}
};
return $rpcenv->fork_worker('qmmove', $vmid, $authuser, $realcmd);
};
my $load_and_check_reassign_configs = sub {
my $vmlist = PVE::Cluster::get_vmlist()->{ids};
@ -3695,7 +3698,14 @@ __PACKAGE__->register_method({
die "cannot move disk '$disk', only configured disks can be moved to another storage\n"
if $disk =~ m/^unused\d+$/;
return PVE::QemuConfig->lock_config($vmid, $move_updatefn);
$load_and_check_move->(); # early checks before forking/locking
my $realcmd = sub {
PVE::QemuConfig->lock_config($vmid, $move_updatefn);
};
return $rpcenv->fork_worker('qmmove', $vmid, $authuser, $realcmd);
} else {
my $msg = "both 'storage' and 'target-vmid' missing, either needs to be set";
raise_param_exc({ 'target-vmid' => $msg, 'storage' => $msg });