d8680a3c43
Automatic merge from submit-queue (batch tested with PRs 56382, 57549). 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>. fix azure disk not available issue when device name changed **What this PR does / why we need it**: There is possibility that device name(`/dev/sd*`) would change when attach/detach data disk in Azure VM according to [Troubleshoot Linux VM device name change](https://docs.microsoft.com/en-us/azure/virtual-machines/linux/troubleshoot-device-names-problems). And We did hit this issue, see customer [case](https://github.com/Azure/acs-engine/issues/1918). This PR would use `/dev/disk/by-id` instead of `/dev/sd*` for azure disk and `/dev/disk/by-id` would not change even device name changed. **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 #57444 **Special notes for your reviewer**: In a customer [case](https://github.com/Azure/acs-engine/issues/1918), customer is unable to use azure disk in StatefulSet since /dev/sd* changed after detach/attach disk. we are using `/dev/sd*`(code is [here](https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/azure_dd/azure_common_linux.go#L140)) to "mount -bind" k8s path, while `/dev/sd*` could be changed when VM is attach/detaching data disks, see [Troubleshoot Linux VM device name change](https://docs.microsoft.com/en-us/azure/virtual-machines/linux/troubleshoot-device-names-problems) And I have also checked related AWS, GCE code, they are using `/dev/disk/by-id/` other than `/dev/sd*`, see [aws code](https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/aws_ebs/aws_util.go#L228) [gce code](https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/gce_pd/gce_util.go#L278) **Release note**: ``` fix azure disk not available when device name changed ``` /sig azure /assign @rootfs @karataliu @brendandburns @khenidak |
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Kubernetes
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