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Use a common interface for find_free_diskname

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We can use 'list_images' to get the desired volume IDs in
'find_free_diskname' for most plugins. For the two LVM plugins, 'list_images'
potentially skips untagged volumes, so we keep the custom version. For the
RBD plugin, 'list_images' is much more costly than the custom version, so we
keep the custom version.

Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
This commit is contained in:
Fabian Ebner
2019-12-11 10:25:49 +01:00
committed by Thomas Lamprecht
parent a573f66a2e
commit a44c0147bc
7 changed files with 30 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
PVE/Storage/GlusterfsPlugin.pm
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@ -160,17 +160,6 @@ sub parse_name_dir {
die "unable to parse volume filename '$name'\n";
}
my $find_free_diskname = sub {
my ($imgdir, $vmid, $fmt, $scfg) = @_;
my $disk_list = [];
my $dh = IO::Dir->new ($imgdir);
@$disk_list = $dh->read() if defined($dh);
return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $imgdir, $vmid, $fmt, $scfg, 1);
};
sub path {
my ($class, $scfg, $volname, $storeid, $snapname) = @_;
@ -225,7 +214,7 @@ sub clone_image {
mkpath $imagedir;
my $name = $find_free_diskname->($imagedir, $vmid, "qcow2", $scfg);
my $name = $class->find_free_diskname($imagedir, $scfg, $vmid, "qcow2", 1);
warn "clone $volname: $vtype, $name, $vmid to $name (base=../$basevmid/$basename)\n";
@ -253,7 +242,7 @@ sub alloc_image {
mkpath $imagedir;
$name = $find_free_diskname->($imagedir, $vmid, $fmt, $scfg) if !$name;
$name = $class->find_free_diskname($imagedir, $scfg, $vmid, $fmt, 1) if !$name;
my (undef, $tmpfmt) = parse_name_dir($name);

10
PVE/Storage/LVMPlugin.pm
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@ -303,8 +303,12 @@ sub clone_image {
die "can't clone images in lvm storage\n";
}
sub lvm_find_free_diskname {
my ($lvs, $vg, $storeid, $vmid, $scfg) = @_;
sub find_free_diskname {
my ($class, $storeid, $scfg, $vmid, $fmt, $add_fmt_suffix) = @_;
my $vg = $scfg->{vgname};
my $lvs = lvm_list_volumes($vg);
my $disk_list = [ keys %{$lvs->{$vg}} ];
@ -345,7 +349,7 @@ sub alloc_image {
die "not enough free space ($free < $size)\n" if $free < $size;
$name = lvm_find_free_diskname(lvm_list_volumes($vg), $vg, $storeid, $vmid, $scfg)
$name = $class->find_free_diskname($storeid, $scfg, $vmid)
if !$name;
lvcreate($vg, $name, $size, ["pve-vm-$vmid"]);

8
PVE/Storage/LvmThinPlugin.pm
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@ -95,9 +95,7 @@ sub alloc_image {
die "no such volume group '$vg'\n" if !defined ($vgs->{$vg});
my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg);
$name = PVE::Storage::LVMPlugin::lvm_find_free_diskname($lvs, $vg, $storeid, $vmid, $scfg)
$name = $class->find_free_diskname($storeid, $scfg, $vmid)
if !$name;
my $cmd = ['/sbin/lvcreate', '-aly', '-V', "${size}k", '--name', $name,
@ -268,9 +266,7 @@ sub clone_image {
$lv = "$vg/$volname";
}
my $lvs = PVE::Storage::LVMPlugin::lvm_list_volumes($vg);
my $name = PVE::Storage::LVMPlugin::lvm_find_free_diskname($lvs, $vg, $storeid, $vmid, $scfg);
my $name = $class->find_free_diskname($storeid, $scfg, $vmid);
my $cmd = ['/sbin/lvcreate', '-n', $name, '-prw', '-kn', '-s', $lv];
run_command($cmd, errmsg => "clone image '$lv' error");

19
PVE/Storage/Plugin.pm
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@ -572,18 +572,19 @@ sub get_next_vm_diskname {
die "unable to allocate an image name for VM $vmid in storage '$storeid'\n"
}
my $find_free_diskname = sub {
my ($imgdir, $vmid, $fmt, $scfg) = @_;
sub find_free_diskname {
my ($class, $storeid, $scfg, $vmid, $fmt, $add_fmt_suffix) = @_;
my $disks = $class->list_images($storeid, $scfg, $vmid);
my $disk_list = [];
if (defined(my $dh = IO::Dir->new($imgdir))) {
@$disk_list = $dh->read();
$dh->close();
foreach my $disk (@{$disks}) {
push @{$disk_list}, $disk->{volid};
}
return get_next_vm_diskname($disk_list, $imgdir, $vmid, $fmt, $scfg, 1);
};
return get_next_vm_diskname($disk_list, $storeid, $vmid, $fmt, $scfg, $add_fmt_suffix);
}
sub clone_image {
my ($class, $scfg, $storeid, $volname, $vmid, $snap) = @_;
@ -607,7 +608,7 @@ sub clone_image {
mkpath $imagedir;
my $name = $find_free_diskname->($imagedir, $vmid, "qcow2", $scfg);
my $name = $class->find_free_diskname($imagedir, $scfg, $vmid, "qcow2", 1);
warn "clone $volname: $vtype, $name, $vmid to $name (base=../$basevmid/$basename)\n";
@ -639,7 +640,7 @@ sub alloc_image {
mkpath $imagedir;
$name = $find_free_diskname->($imagedir, $vmid, $fmt, $scfg) if !$name;
$name = $class->find_free_diskname($imagedir, $scfg, $vmid, $fmt, 1) if !$name;
my (undef, $tmpfmt) = parse_name_dir($name);

10
PVE/Storage/RBDPlugin.pm
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@ -394,8 +394,8 @@ sub path {
return ($path, $vmid, $vtype);
}
my $find_free_diskname = sub {
my ($storeid, $scfg, $vmid) = @_;
sub find_free_diskname {
my ($class, $storeid, $scfg, $vmid, $fmt, $add_fmt_suffix) = @_;
my $cmd = &$rbd_cmd($scfg, $storeid, 'ls');
my $disk_list = [];
@ -415,7 +415,7 @@ my $find_free_diskname = sub {
die $err if $err && $err !~ m/doesn't contain rbd images/;
return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $storeid, $vmid, undef, $scfg);
};
}
sub create_base {
my ($class, $storeid, $scfg, $volname) = @_;
@ -470,7 +470,7 @@ sub clone_image {
die "$volname is not a base image and snapname is not provided\n"
if !$isBase && !length($snapname);
my $name = $find_free_diskname->($storeid, $scfg, $vmid);
my $name = $class->find_free_diskname($storeid, $scfg, $vmid);
warn "clone $volname: $basename snapname $snap to $name\n";
@ -501,7 +501,7 @@ sub alloc_image {
die "illegal name '$name' - should be 'vm-$vmid-*'\n"
if $name && $name !~ m/^vm-$vmid-/;
$name = $find_free_diskname->($storeid, $scfg, $vmid) if !$name;
$name = $class->find_free_diskname($storeid, $scfg, $vmid) if !$name;
my $cmd = &$rbd_cmd($scfg, $storeid, 'create', '--image-format' , 2, '--size', int(($size+1023)/1024), $name);
run_rbd_command($cmd, errmsg => "rbd create $name' error");

2
PVE/Storage/ZFSPlugin.pm
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@ -294,7 +294,7 @@ sub alloc_image {
my $volname = $name;
$volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt) if !$volname;
$volname = $class->find_free_diskname($storeid, $scfg, $vmid, $fmt) if !$volname;
$class->zfs_create_zvol($scfg, $volname, $size);

16
PVE/Storage/ZFSPoolPlugin.pm
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@ -240,7 +240,7 @@ sub alloc_image {
die "illegal name '$volname' - should be 'vm-$vmid-*'\n"
if $volname && $volname !~ m/^vm-$vmid-/;
$volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt)
$volname = $class->find_free_diskname($storeid, $scfg, $vmid, $fmt)
if !$volname;
$class->zfs_create_zvol($scfg, $volname, $size);
@ -250,7 +250,7 @@ sub alloc_image {
die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
if $volname && $volname !~ m/^subvol-$vmid-/;
$volname = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $fmt)
$volname = $class->find_free_diskname($storeid, $scfg, $vmid, $fmt)
if !$volname;
die "illegal name '$volname' - should be 'subvol-$vmid-*'\n"
@ -423,16 +423,6 @@ sub zfs_list_zvol {
return $list;
}
sub zfs_find_free_diskname {
my ($class, $storeid, $scfg, $vmid, $format) = @_;
my $volumes = $class->zfs_list_zvol($scfg);
my $dat = $volumes->{$scfg->{pool}};
my $disk_list = [ keys %$dat ];
return PVE::Storage::Plugin::get_next_vm_diskname($disk_list, $storeid, $vmid, $format, $scfg);
}
sub zfs_get_latest_snapshot {
my ($class, $scfg, $volname) = @_;
@ -612,7 +602,7 @@ sub clone_image {
die "clone_image only works on base images\n" if !$isBase;
my $name = $class->zfs_find_free_diskname($storeid, $scfg, $vmid, $format);
my $name = $class->find_free_diskname($storeid, $scfg, $vmid, $format);
if ($format eq 'subvol') {
my $size = $class->zfs_request($scfg, undef, 'list', '-H', '-o', 'refquota', "$scfg->{pool}/$basename");