RBD: Flatten group snapshot (backport #4973) #5032
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Signed-off-by: Rakshith R <[email protected]> (cherry picked from commit afc08c5)
This commit consolidates flatten logic checks for cloneDepth and snapshotLimit in PrepareVolumeForSnapshot. This allows the function to be called for both CreateSnapshot and CreateVolumeGroupSnapshot. Clone Depth check and flattening of grand parent image now occurs before creation of snapshot starts. This aligns better with how PVC-PVC clone and PVC-restore process occurs currently. Flattening the grandparent image once prevents flattening of every newly created snapshot. Snapshot in above para refers to k8s VolumeSnapshot (which is backed by a rbd image). Signed-off-by: Rakshith R <[email protected]> (cherry picked from commit 9936033)
Currently, CephCSI only uses listSnaps to determine number of snapshots on a RBD image and uses snapshot names as child image names to flatten them. But child images may have different name(in case of group snapshot) or they maybe in trash (deleted k8s VolSnapshot with alive restored PVC). The above problems are avoid by making use of both snap and child image lists. Signed-off-by: Rakshith R <[email protected]> (cherry picked from commit 09d848e)
Signed-off-by: Rakshith R <[email protected]> (cherry picked from commit 50b2a05)
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nixpanic
approved these changes
Dec 17, 2024
Rakshith-R
approved these changes
Dec 18, 2024
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Describe what this PR does
Related issues
related-to: #5000
Fixes: #issue_number
Checklist:
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Request
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updated with breaking and/or notable changes for the next major release.
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This is an automatic backport of pull request #4973 done by [Mergify](https://mergify.com).