| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Fujitsu. All Rights Reserved. |
| # |
| # FS QA Test 021 |
| # |
| # Regression test for commit: |
| # 688f869 ext4: Initialize fsync transaction ids in ext4_new_inode() |
| # |
| 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 |
| _supported_fs ext4 |
| _require_scratch |
| _require_dumpe2fs |
| |
| _scratch_mkfs >> $seqres.full 2>&1 |
| _scratch_mount |
| blocksize=$(_get_block_size $SCRATCH_MNT) |
| _scratch_unmount |
| |
| # With 4k block size, this amounts to 10M FS instance. |
| fssize=$((2560 * $blocksize)) |
| _scratch_mkfs_sized $fssize >> $seqres.full 2>&1 |
| _require_metadata_journaling $SCRATCH_DEV |
| |
| offset=0 |
| found=0 |
| # this is the jbd2 journal superblock magic number on disk, in big endian |
| magic="c0 3b 39 98" |
| |
| while [ $offset -lt $fssize ]; do |
| if od -j $offset -N 4 -t x1 $SCRATCH_DEV | \ |
| grep -i "$magic" >/dev/null; then |
| echo "Found journal: $offset" >> $seqres.full |
| found=1 |
| break |
| fi |
| offset=$((offset + blocksize)) |
| done |
| if [ $found -ne 1 ]; then |
| echo "Found no journal" |
| exit |
| fi |
| |
| # Overwrite journal.s_squence to 0x 81d1a480 |
| # 0x81d1a480 is hex form of 2178000000, and jbd2 journal is big endian on |
| # disk, the s_squence offset to the beginning of journal superblock is 24 |
| # we do this to let jbd2 start to run with a initial big transaction id, |
| # which will reduce the time taken to trigger this bug. |
| $XFS_IO_PROG -c "pwrite -S 0x81 $((offset+24)) 1" \ |
| -c "pwrite -S 0xd1 $((offset+25)) 1" \ |
| -c "pwrite -S 0xa4 $((offset+26)) 1" \ |
| -c "pwrite -S 0x80 $((offset+27)) 1" $SCRATCH_DEV >> $seqres.full 2>&1 |
| |
| trans_id=`$DUMPE2FS_PROG $SCRATCH_DEV 2>/dev/null | grep "Journal sequence" | \ |
| awk '{print $NF}'` |
| echo "Initial transaction id is $trans_id" |
| _scratch_mount |
| |
| do_fdatasync_work() |
| { |
| # Wait for running subcommand before exitting so that |
| # mountpoint is not busy when we try to unmount it |
| trap "wait; exit" SIGTERM |
| |
| while [ 1 ]; do |
| $XFS_IO_PROG -f -c "fdatasync" $SCRATCH_MNT/testfile |
| done |
| } |
| |
| do_fdatasync_work & |
| datasync_work_pid=$! |
| sleep 10 |
| kill $datasync_work_pid >/dev/null 2>&1 |
| wait |
| |
| # success, all done |
| status=0 |
| exit |