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cephfs: set Pool parameter to empty for Snapshot-backed volumes #4047

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merged 1 commit into from Aug 17, 2023
Merged

cephfs: set Pool parameter to empty for Snapshot-backed volumes #4047

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2 changes: 2 additions & 0 deletions e2e/cephfs.go
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Expand Up @@ -44,6 +44,7 @@ var (
cephFSExamplePath = examplePath + "cephfs/"
subvolumegroup = "e2e"
fileSystemName = "myfs"
fileSystemPoolName = "myfs-replicated"
)

func deployCephfsPlugin() {
Expand Down Expand Up @@ -1613,6 +1614,7 @@ var _ = Describe(cephfsType, func() {
scOpts := map[string]string{
"encrypted": "true",
"encryptionKMSID": kmsID,
"pool": fileSystemPoolName,
}

err = createCephfsStorageClass(f.ClientSet, f, true, scOpts)
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7 changes: 4 additions & 3 deletions internal/cephfs/store/volumeoptions.go
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Expand Up @@ -542,9 +542,10 @@ func (vo *VolumeOptions) populateVolumeOptionsFromBackingSnapshot(
return fmtBackingSnapshotOptionMismatch("clusterID", vo.ClusterID, parentBackingSnapVolOpts.ClusterID)
}

if vo.Pool != "" {
return errors.New("cannot set pool for snapshot-backed volume")
}
// Pool parameter is optional and only used to set 'pool_layout' argument for
// subvolume and subvolume clone create commands.
// Setting this to empty since it is not used with Snapshot-backed volume.
vo.Pool = ""
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Why should this not be the same as the pool of the original volume?

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Why should this not be the same as the pool of the original volume?

The original volume's pool is set only for create pvc/clone cmd as pool_layout (pool is retrieved directly from pv attributes) and is not saved anywhere and not used anywhere else.

The parentBackingSnapVolOpts here does not have its pool parameter set.


if vo.MetadataPool != parentBackingSnapVolOpts.MetadataPool {
return fmtBackingSnapshotOptionMismatch("MetadataPool", vo.MetadataPool, parentBackingSnapVolOpts.MetadataPool)
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