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Tue, 14 Apr 2026 10:21:00 +0000 (GMT) From: Disha Goel To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, ritesh.list@gmail.com, ojaswin@linux.ibm.com, djwong@kernel.org, fdmanana@kernel.org, quwenruo.btrfs@gmx.com, zlang@kernel.org, disgoel@linux.ibm.com Subject: [PATCH 1/2] common/dmlogwrites: add _require_logwrites_size helper Date: Tue, 14 Apr 2026 15:50:30 +0530 Message-ID: <20260414102031.74527-1-disgoel@linux.ibm.com> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: bSKWSpK8CFSoke3Sf3XTFvoGZoEZtmEn X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDE0MDA5NiBTYWx0ZWRfX2jO2QA1KCaEm c3UAIvdIQ4cYjP+CEXx0uKd+RuCFQAfebp98vXtORolfAy72DKlqZgy4ujejs3iHKuE2R0wTIXG maAMLYSOJ6edI4+k1MWj80YG8w2tr/nMgUy6VmWiLiL4JL9twaBFUcQujFGmt2Vatj2FJFaoAL9 RbY7oBy10XArfN77YTYY9t+HrII6TtRPBEdnsuYaCT36WZv5QIURUGlL3R1k10dZ5PaWa9VK7MV l+vpFbe9Cn0prjmA6tSRZMU7hLKIHD1x20EKRrsHROku1jBn9DVLXWYA8xz7p+qNHCvEIAgIAPI 9TGWo0TJDWpZnS5ztRqq/h93qwQXCULLDeoxXAWhR0jWSSj9bya8yzazD+SEnyt5UfL2y+EI+WQ 8epseT4830DrHhk8L2EQbnPlBM0lEw5B8XKSfTB+A3McoPn4m7V6lGyGJnh3zC2LNCvyjwGUXjm 8ia/ZDJjI59jRTZ8LBA== X-Proofpoint-ORIG-GUID: bgUhrbvMAACFPHDrm2bdy4Bxd0K3XyoZ X-Authority-Analysis: v=2.4 cv=W60IkxWk c=1 sm=1 tr=0 ts=69de1513 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=4jkvksA_EdEw6qjqcTMA: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=2026-04-14_02,2026-04-13_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1011 priorityscore=1501 spamscore=0 bulkscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604140096 Add a new helper function _require_logwrites_size() to check if the LOGWRITES_DEV meets a minimum size requirement. This is useful for tests that use dm-log-writes with additional space requirements, such as creating LVM snapshots during log replay or tests that generate large amounts of logged I/O operations. The function takes a size parameter in KB and skips the test if LOGWRITES_DEV is smaller than the required size. Signed-off-by: Disha Goel --- common/dmlogwrites | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/common/dmlogwrites b/common/dmlogwrites index a27e1966..1ce2b2fb 100644 --- a/common/dmlogwrites +++ b/common/dmlogwrites @@ -14,6 +14,15 @@ _require_log_writes() _require_test_program "log-writes/replay-log" } +_require_logwrites_size() +{ + [ $# -eq 1 ] || _fail "_require_logwrites_size: expected size param" + + local devsize=$(_get_device_size $LOGWRITES_DEV) + [ $devsize -lt $1 ] && \ + _notrun "LOGWRITES_DEV too small, ${devsize}KB < $1KB" +} + # Starting from v4.15-rc1, DAX support was added to dm-log-writes, but note # that it doesn't track the data that we write via the mmap(), so we can't do # any data integrity checking. We can only verify that the metadata writes for -- 2.45.1