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Mon, 18 May 2026 07:44:43 -0700 (PDT) Message-ID: <82a93174-6897-46af-8602-d7ac9d2d9dc3@gmail.com> Date: Mon, 18 May 2026 22:44:39 +0800 Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 9/9] fstests: btrfs: test UUID consistency for clones with metadata_uuid To: Christoph Hellwig , Anand Jain Cc: fstests@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-f2fs@vger.kernel.org, amir73il@gmail.com, zlang@redhat.com, djwong@kernel.org References: Content-Language: en-US From: Anand Jain In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/5/26 13:40, Christoph Hellwig wrote: > 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? Sure. let me try. Thanks.