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Bug #48296
closed[rbd_support] Attempting to background remove in-use image results in apparent stuck progress
Status:
Resolved
Priority:
Normal
Assignee:
Jason Dillaman
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
nautilus,octopus
Regression:
No
Severity:
3 - minor
Reviewed:
Description
When attempting to background remove an RBD image when it's still in-use (i.e. it has a child image attached), the remove will correctly fail but (1) it leaves an apparently stuck progress notification and (2) the MGR logs shows the (expected) failure every thirty seconds while it retries.
Note that is purely a progress status and log issue. Once the image can be deleted (since the associated child images are flattened or removed), the removal will correctly proceed.
Progress:
sh-4.4# ceph -s
< .... SNIP ... >
progress:
Removing image ocs-storagecluster-cephblockpool/a10a894b726cc from trash
[..............................]
Removing image ocs-storagecluster-cephblockpool/a10a87ad46bc5 from trash
[..............................]
Removing image ocs-storagecluster-cephblockpool/a10a862e83ce1 from trash
[..............................]
Logs:
debug 2020-11-17 13:02:54.211 7f44e544e700 -1 librbd::SnapshotRemoveRequest: 0x558a65235a20 should_complete: encountered error: (16) Device or resource busy debug 2020-11-17 13:02:54.211 7f44e544e700 -1 librbd::image::PreRemoveRequest: 0x558a64e78f20 handle_remove_snapshot: failed to auto-prune snapshot 16: (16) Device or resource busy debug 2020-11-17 13:02:54.215 7f44e32ca700 0 mgr[rbd_support] execute_task: [errno 39] error deleting image from trash
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