Re: [PATCH v4 9/9] fstests: btrfs: test UUID consistency for clones with metadata_uuid

Christoph Hellwig <[email protected]>
Newsgroups org.kernel.vger.fstests,org.kernel.vger.linux-btrfs,org.kernel.vger.linux-ext4,org.kernel.vger.linux-xfs
Message-ID <[email protected]> 
On Tue, Apr 28, 2026 at 02:42:59PM +0800, Anand Jain wrote:
> Btrfs uses the metadata_uuid superblock feature to change the on-disk UUID
> without rewriting every block header. This patch adds a sanity check to
> ensure UUID consistency when a filesystem with metadata_uuid enabled is
> cloned.

xfs does the same.

Can we abstract out the uuid change and generalize the test?
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