mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
72 lines
2.2 KiB
Bash
72 lines
2.2 KiB
Bash
|
#! /bin/bash
|
||
|
|
# SPDX-License-Identifier: GPL-2.0
|
||
|
|
# Copyright (c) 2019 Red Hat, Inc. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# FS QA Test No. 536
|
||
|
|
#
|
||
|
|
# Test a some write patterns for stale data exposure after a crash. XFS is
|
||
|
|
# historically susceptible to this problem in the window between delalloc to
|
||
|
|
# physical extent conversion and writeback completion.
|
||
|
|
#
|
||
|
|
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
|
||
|
|
|
||
|
|
# remove previous $seqres.full before test
|
||
|
|
rm -f $seqres.full
|
||
|
|
|
||
|
|
# real QA test starts here
|
||
|
|
|
||
|
|
# Modify as appropriate.
|
||
|
|
_supported_fs generic
|
||
|
|
_require_scratch
|
||
|
|
_require_scratch_shutdown
|
||
|
|
|
||
|
|
# create a small fs and initialize free blocks with a unique pattern
|
||
|
|
_scratch_mkfs_sized $((1024 * 1024 * 100)) >> $seqres.full 2>&1
|
||
|
|
_scratch_mount
|
||
|
|
$XFS_IO_PROG -f -c "pwrite -S 0xab 0 100m" -c fsync $SCRATCH_MNT/spc \
|
||
|
|
>> $seqres.full 2>&1
|
||
|
|
rm -f $SCRATCH_MNT/spc
|
||
|
|
$XFS_IO_PROG -c fsync $SCRATCH_MNT
|
||
|
|
|
||
|
|
# Write a couple files with particular writeback sequences. The first writes a
|
||
|
|
# delalloc extent and triggers writeback on the last page. The second triggers
|
||
|
|
# post-eof preallocation (on XFS), write extends into the preallocation and
|
||
|
|
# triggers writeback of the last written page.
|
||
|
|
$XFS_IO_PROG -fc "pwrite 0 256k" -c "sync_range -w 252k 4k" \
|
||
|
|
-c "sync_range -a 252k 4k" $SCRATCH_MNT/file.1 >> $seqres.full 2>&1
|
||
|
|
$XFS_IO_PROG -fc "pwrite 0 260k" -c fsync -c "pwrite 1536k 4k" \
|
||
|
|
-c "sync_range -w 1536k 4k" -c "sync_range -a 1536k 4k" \
|
||
|
|
$SCRATCH_MNT/file.2 >> $seqres.full 2>&1
|
||
|
|
|
||
|
|
# Shut down before any other writeback completes. Flush the log to persist inode
|
||
|
|
# size updates.
|
||
|
|
_scratch_shutdown -f
|
||
|
|
|
||
|
|
# Now search both files for stale bytes. The region prior to the last page in
|
||
|
|
# the first file should be zero filled. The region between the two writes to the
|
||
|
|
# second file should also be zero filled.
|
||
|
|
_scratch_cycle_mount
|
||
|
|
echo file.1 | tee -a $seqres.full
|
||
|
|
hexdump $SCRATCH_MNT/file.1 | tee -a $seqres.full | grep ab
|
||
|
|
echo file.2 | tee -a $seqres.full
|
||
|
|
hexdump $SCRATCH_MNT/file.2 | tee -a $seqres.full | grep ab
|
||
|
|
|
||
|
|
status=0
|
||
|
|
exit
|