From: Boris Burkov Date: Mon, 20 Jul 2020 19:05:56 +0000 (-0700) Subject: generic: add a test for umount racing mount X-Git-Tag: v2022.05.01~745 X-Git-Url: http://git.apps.os.sepia.ceph.com/?p=xfstests-dev.git;a=commitdiff_plain;h=e444aa56c917a55acb6772e05526ffc9a86458b2 generic: add a test for umount racing mount Test if dirtying many inodes (which can delay umount) then unmounting and quickly mounting again causes the mount to fail. A race, which breaks the test in btrfs, is fixed by kernel commit 48cfa61b58a1 ("btrfs: fix mount failure caused by race with umount") Signed-off-by: Boris Burkov Reviewed-by: Zorro Lang Signed-off-by: Eryu Guan --- diff --git a/tests/generic/604 b/tests/generic/604 new file mode 100755 index 00000000..17e74f54 --- /dev/null +++ b/tests/generic/604 @@ -0,0 +1,52 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2020 Facebook All Rights Reserved. +# +# FS QA Test 604 +# +# Evicting dirty inodes can take a long time during umount. +# Check that a new mount racing with such a delayed umount succeeds. +# +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +# remove previous $seqres.full before test +rm -f $seqres.full + +# real QA test starts here + +# Modify as appropriate. +_supported_fs generic +_supported_os Linux +_require_scratch + +_scratch_mkfs > /dev/null 2>&1 +_scratch_mount +for i in $(seq 0 500); do + $XFS_IO_PROG -c "pwrite 0 4K" $SCRATCH_MNT/$i >/dev/null 2>&1 +done +_scratch_unmount & +_scratch_mount +wait + +echo "Silence is golden" + +# success, all done +status=0 +exit diff --git a/tests/generic/604.out b/tests/generic/604.out new file mode 100644 index 00000000..c06a1c7f --- /dev/null +++ b/tests/generic/604.out @@ -0,0 +1,2 @@ +QA output created by 604 +Silence is golden diff --git a/tests/generic/group b/tests/generic/group index 1d98ed5f..8d87c5e3 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -606,3 +606,4 @@ 601 auto quick quota 602 auto quick encrypt 603 auto quick quota +604 auto quick mount