• Kubernetes Submit Queue's avatar
    Merge pull request #66832 from msau42/udev · d3c09656
    Kubernetes Submit Queue authored
    Automatic merge from submit-queue (batch tested with PRs 64645, 66832). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
    
    Detect if GCE PD udev link is wrong and try to correct it
    
    **What this PR does / why we need it**:
    udev can miss scsi events and not update device links properly when disks are detached and reattached to the same node in a different order.  This PR workarounds the issue by comparing the udev link name, which is the PD disk name, with the scsi disk serial number returned from scsi_id, and prevents mounting of the disk if the link is wrong.  It will also run `udevadm trigger` on the disk to try to correct the bad link.
    
    **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
    Fixes #
    
    **Special notes for your reviewer**:
    
    **Release note**:
    
    ```release-note
    This fix prevents a GCE PD volume from being mounted if the udev device link is stale and tries to correct the link.
    ```
    d3c09656
gce_util.go 13.7 KB