b24bc2cfdc
Automatic merge from submit-queue. 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>. Add mountpoint as CRI image filesystem storage identifier. Fixes https://github.com/kubernetes/kubernetes/issues/57356. This PR changes CRI to use mountpoint as storage identifier. See https://github.com/kubernetes/kubernetes/issues/57356#issuecomment-363608733. Note that: 1) This doesn't work with devicemapper for now. Please feel free to propose change for device mapper, we can discuss more about this after this first version is merged. @mrunalp @runcom 2) `mountpoint` is added as new field in `StorageIdentifier` now. After https://github.com/kubernetes/kubernetes/pull/58973 is merged, we can remove the UUID field in `v1alpha2`. /cc @yujuhong @feiskyer @yguo0905 @dashpole @mikebrow @abhi @kubernetes/sig-node-api-reviews **Release note**: ```release-note CRI starts using moutpoint as image filesystem identifier instead of UUID. ```