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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1777309553; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xt1Ev/wLan3HxX+yy3/W3SrxiXPBZBxO+DaqEQ//04c=; b=FRO0mJvj0nXivpU+I9K5yx16vr/Wk6M7gYG79LbBwzK/vNTJmu/+ch7UM4N+lvKHw79nvD mUFp5UR2wlmQvggDsnwF3os5cFXCKUm8T2XPnSVK9swGAY9NLtv3gNX61kdHr2Ekg1DSaI BBPBO6wx6oXu9MSSL0GiX0/UsJ+lDrY= X-MC-Unique: IC3RRJevMQyC33fVLEPCjw-1 X-Mimecast-MFC-AGG-ID: IC3RRJevMQyC33fVLEPCjw_1777309549 From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, hreitz@redhat.com, den@openvz.org, stefanha@redhat.com, qemu-stable@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 4/4] iotests/046: Test that discard/write_zeroes wait for dependencies Date: Mon, 27 Apr 2026 19:05:20 +0200 Message-ID: <20260427170520.101242-5-kwolf@redhat.com> In-Reply-To: <20260427170520.101242-1-kwolf@redhat.com> References: <20260427170520.101242-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1777309605406154100 Content-Type: text/plain; charset="utf-8" This is a regression test for the bug fixed in the previous commit where discard and write_zeroes operations wouldn't consider their dependencies in s->cluster_allocs. Without the fix, this results in a corrupted image. Signed-off-by: Kevin Wolf --- tests/qemu-iotests/046 | 46 ++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/046.out | 36 +++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) diff --git a/tests/qemu-iotests/046 b/tests/qemu-iotests/046 index 4c9ed4d26e1..e03dd401479 100755 --- a/tests/qemu-iotests/046 +++ b/tests/qemu-iotests/046 @@ -184,6 +184,48 @@ aio_write -P 160 0x104000 0x18000 resume A aio_flush EOF + +# Create a pre-allocated zero cluster, then start a write on it and discar= d it +# before the L2 update is made +cat <