remove support for older kubernetes/ceph releases

[Madhu-1]

Update the Readme and code where we have added support for older ceph or kubernetes versions. Octopus is already EOL we can remove it from Readme support. also check code for cephfs resize/subvolume metadata related operations as well.

[github-actions]

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[Rakshith-R]

hey @karthik-us ,
This is part of 3.10 milestone.
Can you prioritize this issue to get it done within this week or early next week ?

Thanks,

[karthik-us]

Sure @Rakshith-R.

[karthik-us]

@Madhu-1 can you please elaborate on this one please?

also check code for cephfs resize/subvolume metadata related operations as well.

If you can point me to the changesets which requires changes in these parts of the codes, that would be great.

[Madhu-1]

ceph-csi/internal/cephfs/core/metadata.go

Lines 35 to 52 in 6b3665b

	func (s *subVolumeClient) supportsSubVolMetadata() bool {
	newLocalClusterState(s.clusterID)
	return clusterAdditionalInfo[s.clusterID].subVolMetadataState != unsupported
	}
	func (s *subVolumeClient) isUnsupportedSubVolMetadata(err error) bool {
	var invalid fsAdmin.NotImplementedError
	if err != nil && errors.As(err, &invalid) {
	// In case the error is other than invalid command return error to the caller.
	clusterAdditionalInfo[s.clusterID].subVolMetadataState = unsupported
	return false
	}
	clusterAdditionalInfo[s.clusterID].subVolMetadataState = supported
	return true
	}

ceph-csi/internal/cephfs/core/volume.go

Lines 278 to 303 in 6b3665b

	if clusterAdditionalInfo[s.clusterID].resizeState == unknown ||
	clusterAdditionalInfo[s.clusterID].resizeState == supported {
	fsa, err := s.conn.GetFSAdmin()
	if err != nil {
	log.ErrorLog(ctx, "could not get FSAdmin, can not resize volume %s:", s.FsName, err)
	return err
	}
	_, err = fsa.ResizeSubVolume(s.FsName, s.SubvolumeGroup, s.VolID, fsAdmin.ByteCount(bytesQuota), true)
	if err == nil {
	clusterAdditionalInfo[s.clusterID].resizeState = supported
	return nil
	}
	var invalid fsAdmin.NotImplementedError
	// In case the error is other than invalid command return error to the caller.
	if !errors.As(err, &invalid) {
	log.ErrorLog(ctx, "failed to resize subvolume %s in fs %s: %s", s.VolID, s.FsName, err)
	return err
	}
	}
	clusterAdditionalInfo[s.clusterID].resizeState = unsupported
	s.Size = bytesQuota
	return s.CreateVolume(ctx)