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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
#
# FS QA Test 361
#
# Test remount on I/O errors.
#
# XFS had a bug to hang on remount in this case, this kernel commit fix
# the issue.
# 5cb13dc cancel the setfilesize transation when io error happen
#
. ./common/preamble
_begin_fstest auto quick
# Override the default cleanup function.
_cleanup()
{
$UMOUNT_PROG $fs_mnt
_destroy_loop_device $loop_dev
cd /
rm -f $tmp.*
}
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs generic
_require_scratch
_require_block_device $SCRATCH_DEV
_require_loop
_require_sparse_files
[ $FSTYP = "bcachefs" ] && _notrun "buggy on bcachefs"
# create a small filesystem to hold another filesystem image
_scratch_mkfs_sized $((512 * 1024 * 1024)) >>$seqres.full 2>&1
_scratch_mount
# create the sparse fs image and mount point
fs_img=$SCRATCH_MNT/fs.img
fs_mnt=$SCRATCH_MNT/mnt
$XFS_IO_PROG -fc "truncate 1g" $fs_img >>$seqres.full 2>&1
mkdir -p $fs_mnt
# mount loop device and create a larger file to hit I/O errors on loop device
loop_dev=$(_create_loop_device $fs_img)
_mkfs_dev $loop_dev
_mount -t $FSTYP $loop_dev $fs_mnt
if [ "$FSTYP" = "xfs" ]; then
# Turn off all XFS metadata IO error retries
dname=$(_short_dev $loop_dev)
echo 0 | tee /sys/fs/xfs/$dname/error/*/*/* > /dev/null
fi
$XFS_IO_PROG -fc "pwrite 0 520m" $fs_mnt/testfile >>$seqres.full 2>&1
# remount should not hang
$MOUNT_PROG -o remount,ro $fs_mnt >>$seqres.full 2>&1
# success, all done
echo "Silence is golden"
status=0
exit
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