Added limitations of RO volume from a volume snapshot #173
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
nitesh3108
reviewed
Mar 8, 2022
| | The `kubectl logs isilon-controller-0 -n isilon -c driver` logs shows the driver **Authentication failed. Trying to re-authenticate** when using Session-based authentication | The issue has been resolved from OneFS 9.3 onwards, for OneFS versions prior to 9.3 for session-based authentication either smart connect can be created against a single node of Isilon or CSI Driver can be installed/pointed to a particular node of the Isilon else basic authentication can be used by setting isiAuthType in `values.yaml` to 0 | | ||
| | When an attempt is made to create more than one ReadOnly PVC from the same volume snapshot, the second and subsequent requests results in PVCs in state `Pending`, with a warning `another RO volume from this snapshot is already present`. This is because the driver allows only one RO volume from a specific snapshot at any point in time. This is to allow faster creation(with in few seconds) of a RO PVC from a volume snapshot irrespective of the size of volume snapshot. | Wait for the deletion of first RO PVC created from the same volume snapshot. | |
There was a problem hiding this comment.
remove space --> (within few seconds)
There was a problem hiding this comment.
remove space --> (within few seconds)
done
nitesh3108
reviewed
Mar 8, 2022
| | The `kubectl logs isilon-controller-0 -n isilon -c driver` logs shows the driver **Authentication failed. Trying to re-authenticate** when using Session-based authentication | The issue has been resolved from OneFS 9.3 onwards, for OneFS versions prior to 9.3 for session-based authentication either smart connect can be created against a single node of Isilon or CSI Driver can be installed/pointed to a particular node of the Isilon else basic authentication can be used by setting isiAuthType in `values.yaml` to 0 | | ||
| | When an attempt is made to create more than one ReadOnly PVC from the same volume snapshot, the second and subsequent requests results in PVCs in state `Pending`, with a warning `another RO volume from this snapshot is already present`. This is because the driver allows only one RO volume from a specific snapshot at any point in time. This is to allow faster creation(with in few seconds) of a RO PVC from a volume snapshot irrespective of the size of volume snapshot. | Wait for the deletion of first RO PVC created from the same volume snapshot. | | ||
| | While attaching a ReadOnly PVC from a volume snapshot to a pod, the mount operation will fail with error `mounting ... failed, reason given by server: No such file or directory`, if RO volume's access zone(non System access zone) on Isilon is configured with a dedicated service IP(which is same as `AzServiceIP` storage class parameter). This operation results in accessing the snapshot base directory(from /ifs) and results in overstepping the RO volume's access zone's base directory, which the OneFS doesn't allow. | Provide a service ip which belongs to RO volume's access zone which set the highest level /ifs as its zone base directory. | |
There was a problem hiding this comment.
addressed this comment
prablr79
approved these changes
Mar 8, 2022
nitesh3108
approved these changes
Mar 8, 2022
shanmydell
approved these changes
Mar 8, 2022
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
Added limitations of RO volume from a volume snapshot
GitHub Issues
List the GitHub issues impacted by this PR:
Checklist: