[pve-devel] [PATCH storage] rbd: unmap volume after rename
Fabian Ebner
f.ebner at proxmox.com
Thu Apr 28 10:47:18 CEST 2022
When krbd is used, subsequent removal after an an operation
involving a rename could fail with
> librbd::image::PreRemoveRequest: 0x559b7506a470 \
> check_image_watchers: image has watchers - not removing
because the old mapping was still present.
For both operations with a rename, the owning guest should be offline,
but even if it weren't, unmap simply fails when the volume is in-use.
Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
---
PVE/Storage/RBDPlugin.pm | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/PVE/Storage/RBDPlugin.pm b/PVE/Storage/RBDPlugin.pm
index e9856a9..d71af36 100644
--- a/PVE/Storage/RBDPlugin.pm
+++ b/PVE/Storage/RBDPlugin.pm
@@ -482,6 +482,9 @@ sub create_base {
);
run_rbd_command($cmd, errmsg => "rbd rename '$name' error");
+ eval { $class->unmap_volume($storeid, $scfg, $volname); };
+ warn $@ if $@;
+
my $running = undef; #fixme : is create_base always offline ?
$class->volume_snapshot($scfg, $storeid, $newname, $snap, $running);
@@ -817,6 +820,9 @@ sub rename_volume {
errmsg => "could not rename image '${source_image}' to '${target_volname}'",
);
+ eval { $class->unmap_volume($storeid, $scfg, $source_volname); };
+ warn $@ if $@;
+
$base_name = $base_name ? "${base_name}/" : '';
return "${storeid}:${base_name}${target_volname}";
--
2.30.2
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