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Mon, 18 May 2026 07:27:39 -0700 (PDT) Message-ID: Date: Mon, 18 May 2026 22:27:35 +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 0/9] fstests: add test coverage for cloned filesystem ids 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 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 13:37, Christoph Hellwig wrote: > This is missing a real cover letter saying what this series is trying > to archive. I should have copied from v1. See below [1] SCRATCH_DEV_POOL support for non-btrfs was dropped in v2. Instead, using the newly added helper _loop_image_create_clone(). [1] https://lore.kernel.org/fstests/cover.1772095513.git.asj@kernel.org/ ----- This series adds fstests infrastructure and test cases to verify correct filesystem identity behaviour when a filesystem is cloned (e.g. via block-level copy), covering inotify, fanotify, f_fsid, libblkid, IMA, and exportfs file handles. - SCRATCH_DEV_POOL support extended to non-Btrfs filesystems - _mkfs_scratch_sized_clone() helper to create a cloned filesystem - _clone_mount_option() helper to apply per-filesystem clone mount options New tests verify: - inotify and fanotify events are isolated between cloned filesystems - f_fsid is unique across cloned filesystem instances - libblkid correctly resolves duplicate UUIDs to distinct devices - IMA distinct identity for each cloned filesystem - exportfs file handles resolve correctly on cloned filesystems -----