GabrielBrascher commented on a change in pull request #3969: Snapshot deletion
issues
URL: https://github.com/apache/cloudstack/pull/3969#discussion_r401680996
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File path:
engine/storage/snapshot/src/main/java/org/apache/cloudstack/storage/snapshot/DefaultSnapshotStrategy.java
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@@ -269,63 +262,87 @@ public boolean deleteSnapshot(Long snapshotId) {
throw new InvalidParameterValueException("Can't delete
snapshotshot " + snapshotId + " due to it is in " + snapshotVO.getState() + "
Status");
}
- // first mark the snapshot as destroyed, so that ui can't see it, but
we
- // may not destroy the snapshot on the storage, as other snapshots may
- // depend on it.
SnapshotInfo snapshotOnImage =
snapshotDataFactory.getSnapshot(snapshotId, DataStoreRole.Image);
- if (snapshotOnImage == null) {
- s_logger.debug("Can't find snapshot on backup storage, delete it
in db");
- snapshotDao.remove(snapshotId);
- return true;
- }
-
- SnapshotObject obj = (SnapshotObject)snapshotOnImage;
- try {
- obj.processEvent(Snapshot.Event.DestroyRequested);
- List<VolumeDetailVO> volumesFromSnapshot;
- volumesFromSnapshot =
_volumeDetailsDaoImpl.findDetails("SNAPSHOT_ID", String.valueOf(snapshotId),
null);
- if (volumesFromSnapshot.size() > 0) {
- try {
- obj.processEvent(Snapshot.Event.OperationFailed);
- } catch (NoTransitionException e1) {
- s_logger.debug("Failed to change snapshot state: " +
e1.toString());
+ boolean deletedOnSecondary = false;
+ if (snapshotOnImage == null) {
+ s_logger.debug(String.format("Can't find snapshot [snapshot id:
%d] on backup storage", snapshotId));
Review comment:
@davidjumani @harikrishna-patnala it might work placing
`snapshotDao.remove(snapshotId)` here, indeed.
However, I see a potential problem in the case thre is no snapshot backed up
on secondary and deletion fails at the primary storage. In such a case it would
remove the snapshot entry before removing the snapshot on primary storage. Not
sure if this could lead to a snapshot garbage issue on primary storage (instead
of on secondary).
What do you think? Does this observation make sense?
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