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Tue, 10 Mar 2026 14:23:30 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 20191) id D18E4E09C9; Tue, 10 Mar 2026 15:23:30 +0100 (CET) From: Stefan Haberland To: Jens Axboe Cc: linux-block@vger.kernel.org, Jan Hoeppner , linux-s390@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Christian Borntraeger Subject: [PATCH 1/2] s390/dasd: Move quiesce state with pprc swap Date: Tue, 10 Mar 2026 15:23:29 +0100 Message-ID: <20260310142330.4080106-2-sth@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260310142330.4080106-1-sth@linux.ibm.com> References: <20260310142330.4080106-1-sth@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: LdnE6s2kXcB4sS6ij0PnsL1bVUnJM1hd X-Proofpoint-ORIG-GUID: LdnE6s2kXcB4sS6ij0PnsL1bVUnJM1hd X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEwMDEyMiBTYWx0ZWRfXw9Pw98jySUVv 9hkAM6nWoGpi1jfrbcab1YTFuvbMbhF+JkWBb0U2cTlQjPt8gRci8LyDHR7AmWuO6zEuB70Ohj9 6YrmKYkJ6XvOiUbuPUyQ8GSKeXGl5BoRH4Tzce/6kvub9UkeQ2tjZB5XK8WNPStoMC/JPFX+cMY 87/VIew6rdg2cXIQYuX2IhuiO0GWn7X6GhZxQvBJOztI/glVr8VfQfcIjoikAVdqVzy/7zw0D7k wj7vHUUIR4ImgsjEa7GE5QXsWNaSrNj6rTLUCMz6KjJGE2Nz3yz8yoV1pPQ2zRa22oLft5TIsve xLiM0fuYqlxDfkbLp198IPVFG13om56qHaRqFhNkq7p9zg2ESAkD3N1jwFtikUhoPXjAFxW3Vwe WuXvm2TI+XSle+TMAkiuf1ukXiJz+PcP4Caodk/SwWP5Kt2rVhtDZ8HvS2/Jh7WuXNycckrIyca bNK24vCQO8njSpU13Iw== X-Authority-Analysis: v=2.4 cv=B5q0EetM c=1 sm=1 tr=0 ts=69b02969 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=h-oDuFz59Vw_3O1lSLIA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-10_02,2026-03-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 spamscore=0 clxscore=1011 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603100122 Quiesce and resume is a mechanism to suspend operations on DASD devices. In the context of a controlled copy pair swap operation, the quiesce operation is usually issued before the actual swap and a resume afterwards. During the swap operation, the underlying device is exchanged. Therefore, the quiesce flag must be moved to the secondary device to ensure a consistent quiesce state after the swap. The secondary device itself cannot be suspended separately because there is no separate block device representation for it. Fixes: 413862caad6f ("s390/dasd: add copy pair swap capability") Cc: stable@vger.kernel.org #6.1 Reviewed-by: Jan Hoeppner Signed-off-by: Stefan Haberland --- drivers/s390/block/dasd_eckd.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eck= d.c index cb068d5e2145..2b9a8dd3ea89 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -6182,6 +6182,11 @@ static int dasd_eckd_copy_pair_swap(struct dasd_de= vice *device, char *prim_busid dev_name(&secondary->cdev->dev), rc); } =20 + if (primary->stopped & DASD_STOPPED_QUIESCE) { + dasd_device_set_stop_bits(secondary, DASD_STOPPED_QUIESCE); + dasd_device_remove_stop_bits(primary, DASD_STOPPED_QUIESCE); + } + /* re-enable device */ dasd_device_remove_stop_bits(primary, DASD_STOPPED_PPRC); dasd_device_remove_stop_bits(secondary, DASD_STOPPED_PPRC); --=20 2.51.0