[release-4.13] fix: detect and remount stale NFS mounts in NodePublishVolume#1109
Merged
k8s-ci-robot merged 2 commits intokubernetes-csi:release-4.13from Apr 19, 2026
Conversation
When an NFS server restarts, existing mounts become stale. If a pod with fsGroup is restarted, kubelet calls applyFSGroup which does lstat on the mount path and fails with ESTALE before CSI driver gets a chance to remount. Fix by checking for stale file handles when the target path is already mounted. If detected, unmount the stale mount and proceed with a fresh mount. Ref 927
- Make os.Lstat injectable via lstatFunc package variable for testability - Add NodePublishVolume test case covering ESTALE detection -> unmount -> remount - Add TestIsStaleFileHandle with coverage for ESTALE errno, wrapped errors, string matching, and negative cases
k8s-ci-robot
added
the
release-note
k8s-ci-robot
added
cncf-cla: yes
k8s-ci-robot
added
the
lgtm
Contributor
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: andyzhangx, k8s-infra-cherrypick-robot The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
Approvers can indicate their approval by writing |
k8s-ci-robot
added
the
approved
This file contains hidden or 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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
This is an automated cherry-pick of #1108
/assign andyzhangx