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rbd: flatten datasource image before creating volume

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This commit ensures that parent image is flattened before
creating volume.
- If the data source is a PVC, the underlying image's parent
  is flattened(which would be a temp clone or snapshot).
  hard & soft limit is reduced by 2 to account for depth that
  will be added by temp & final clone.

- If the data source is a Snapshot, the underlying image is
  itself flattened.
  hard & soft limit is reduced by 1 to account for depth that
  will be added by the clone which will be restored from the
  snapshot.

Flattening step for resulting PVC image restored from snapshot is removed.
Flattening step for temp clone & final image is removed when pvc clone is
being created.

Fixes: #2190

Signed-off-by: Rakshith R <rar@redhat.com>
This commit is contained in:
Rakshith R
2022-02-21 17:55:23 +05:30
committed by mergify[bot]
parent 6dd5fe9360
commit a56f9a0c05
4 changed files with 110 additions and 90 deletions
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1
internal/rbd/rbd_journal.go
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@ -303,7 +303,6 @@ func (rv *rbdVolume) Exists(ctx context.Context, parentVol *rbdVolume) (bool, er
return false, err
}
// TODO: check image needs flattening and completed?
err = rv.repairImageID(ctx, j, false)
if err != nil {