Resize filesystems automatically when the block device allows bigger size

[jsafrane]

This is follow up of #99039

What would you like to be added:

Volume resizing code should compare size of a block device with size of the filesystem on it and resize the filesystem to maximum available size automatically. This should be done in kubernetes/mount-utils, as suggested in #99039.

Why is this needed:

When a volume snapshot is restored to a volume that is bigger than the original volume, or a volume is cloned to a bigger volume, CSI drivers must enlarge the filesystem before / on the first mount. Having a common function(s) to compare block volume size (e.g. blockdev --getsize64 /dev/xyz) and size of the filesystem (dumpe2fs -h /dev/xyz / xfs-info /dev/xyz) would reduce code duplication in CSI drivers.

We do not need this behavior in kubelet, only in CSI drivers, so it should be optional.

[k8s-ci-robot]

@jsafrane: This issue is currently awaiting triage.

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[jsafrane]

/sig storage

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/lifecycle stale

[fejta-bot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
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/lifecycle rotten

[jsafrane]

/remove-lifecycle rotten

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/lifecycle stale

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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/close

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue or PR with /reopen
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/close

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[jsafrane]

For the record, this has been fixed by #99223