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Mon, 27 Apr 2026 12:26:24 +0000 (GMT) Received: from localhost.localdomain (unknown [9.39.16.1]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 27 Apr 2026 12:26:24 +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, anajain.sg@gmail.com, Disha Goel Subject: [PATCH v2 1/2] common/dmlogwrites: add _require_log_writes_sized helper Date: Mon, 27 Apr 2026 17:55:50 +0530 Message-ID: <20260427122551.71696-1-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-Spam-Details-Enc: AW1haW4tMjYwNDI3MDEzMSBTYWx0ZWRfX/H3wz9ABPq4n HveGjYy9b1MtH/bYHoqqXOMyvNfFvtIPkhXAtOQvOZaOHJmsEHA7xFD2OHlERvcwKXRteZvOwvv 5mIEJdDlLm5781OPfTcIrvZWUWDLbp/ptjI0Ck/2E0XjO5tJFUbNALVD0UZrG47gkT+Q+TTBI/5 N97DPB1DqM4CayjGmjYtdVbhyWAKNdRenZS3pjgwesrBSJWoaC11Fe6yBAZWB/Rb36qTfb4WjJ8 oeqTee5GxjQEoDPY0MMvAuC//ZHl4hzArLYcRfY5B3qxe81OGJX0o+7zguxlX9+JYa1lV6GZU9D uC2XxjJnT4unrlCsikh4iXvekZ4Bjv/jiWaCAQcOwlOEe5CZ0k+MEDjVRxmfD3D2x3BsqpBKdbm GwELOd1p/VVTfHbaoDQY2g85wwQ3Q2ACIKYWl/NzLdwGR3hvqMPyqmwfpOFc6hgO1D43SeK+EIj c15POh/ABkKOuAiq0XA== X-Proofpoint-GUID: HybTEW3AdEt4uY2WvTWesKFTnP6M_K_u X-Proofpoint-ORIG-GUID: 3OVBar1ZMVPklyRUCsg_KTJluAcKqMle X-Authority-Analysis: v=2.4 cv=MohiLWae c=1 sm=1 tr=0 ts=69ef55f8 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=VnNF1IyMAAAA:8 a=9OGe75lrTsZGxTEJxl8A: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=2026-04-27_03,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604270131 Add a new helper function _require_log_writes_sized() 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, calls _require_log_writes() internally, and skips the test if LOGWRITES_DEV is smaller than the required size. v2: - Renamed function from _require_logwrites_size to _require_log_writes_sized - Added documentation comment clarifying the parameter is in KB - Made function call _require_log_writes() internally to avoid redundant calls in test code Suggested-by: Darrick J. Wong Suggested-by: Anand Jain Signed-off-by: Disha Goel --- common/dmlogwrites | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/common/dmlogwrites b/common/dmlogwrites index a27e1966..0925b333 100644 --- a/common/dmlogwrites +++ b/common/dmlogwrites @@ -14,6 +14,21 @@ _require_log_writes() _require_test_program "log-writes/replay-log" } +# Require a log writes device of a minimum size +# $1: minimum size in KB +_require_log_writes_sized() +{ + local size=$1 + + [ $# -eq 1 ] || _fail "_require_log_writes_sized: expected size param" + + _require_log_writes + + local devsize=$(_get_device_size $LOGWRITES_DEV) + [ $devsize -lt $1 ] && \ + _notrun "LOGWRITES_DEV too small, ${devsize}KB < ${size}KB" +} + # 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