JoaoJandre commented on PR #9270:
URL: https://github.com/apache/cloudstack/pull/9270#issuecomment-2754388858
> @JoaoJandre, these are probably corner cases but: delta max = 3
incremental snapshots = enabled Case one: 1 - create 3 snapshots with copies to
a second zone 2 - delete the first parent snapshot from the main zone 3 - copy
again the snapshot from the second zone to the first 4 - try to delete any of
the child snapshots or the parent from the first zone
>
> ```
> 2025-03-25 09:46:24,873 DEBUG [o.a.c.s.s.SnapshotObject]
(API-Job-Executor-25:[ctx-a1686c7f, job-473, ctx-78ff04fd]) (logid:556be43c)
Found parent snapshot references [{"dataStoreId":1,"id":
>
59,"installPath":"snapshots\/2\/70\/2e5d8a05-aa60-485d-ad0d-dbc88ad94769","kvmCheckpointPath":null,"snapshotId":24,"state":"Ready"},
{"dataStoreId":2,"id":60,"installPath":"snapshots\/2\/70\/2e5d8a05-aa60-485d-ad0d-dbc88ad94769","kvmCheckpointPath":null,"snapshotId":24,"state":"Ready"}],
will filter to just one.
>
> 2025-03-25 09:46:24,874 ERROR [o.a.c.s.s.DefaultSnapshotStrategy]
(API-Job-Executor-25:[ctx-a1686c7f, job-473, ctx-78ff04fd]) (logid:556be43c)
Failed to delete snapshot [SnapshotTO[datastore=NfsTO
{"_role":"Image","_url":"nfs:\/\/10.2.128.5\/export\/secondary-a","nfsVersion":null,"uuid":null}|volume=volumeTO
{"dataStore":"PrimaryDataStoreTO
{\"id\":5,\"name\":\"nfs-a\",\"poolType\":\"NetworkFilesystem\",\"uuid\":\"7a2b426f-fd55-3d72-ad3c-3a3060d59623\"}","id":70,"name":"ROOT-53","path":"343a2776-7cd0-47ef-a43d-bbbe8a219086","uuid":"343a2776-7cd0-47ef-a43d-bbbe8a219086"}|pathsnapshots/2/70/2e5d8a05-aa60-485d-ad0d-dbc88ad94769]]
on storage [Image {uuid: "703a4f8c-1c8c-473a-aa8e-1fcf9308ba2b", name:
"secondary-a"}] due to [Could not find snapshot parent with id [24]. None of
the records have a checkpoint path.].
com.cloud.utils.exception.CloudRuntimeException: Could not find snapshot parent
with id [24]. None of the records have a checkpoint path.
> at
org.apache.cloudstack.storage.snapshot.SnapshotObject.lambda$getCorrectIncrementalParent$1(SnapshotObject.java:145)
> ```
>
> Case two: 1- take 3 snapshots with copies to a second zone 2 - delete the
last snapshot (that is the end of the chain) from the first zone 3 - copy the
snapshot from the second zone to the first. The end of the chain is lost for
this snapshot and will be set to the next created one
>
> Case three - there isn't an issue here. I found where is the difference
between the environments and will test it again I cannot find this related to
your PR, but I cannot create a volume from a copied snapshot on another zone. I
have tested this on another environment with the main and it is working. The
problem is that CS cannot find storage for the new volume.
Hi @slavkap,
Thank you for testing, I'll look into these cases you've found and I'll
report soon.
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