| #! /bin/bash |
| # FS QA Test No. 042 |
| # |
| # xfs_fsr QA tests |
| # create a large fragmented file and check that xfs_fsr doesn't corrupt |
| # it or the other contents of the filesystem |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| # |
| #----------------------------------------------------------------------- |
| # |
| set +x |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| |
| _cleanup() |
| { |
| _scratch_unmount |
| rm -f $tmp.* |
| } |
| trap "_cleanup ; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _supported_os Linux |
| |
| _require_scratch |
| |
| [ "$XFS_FSR_PROG" = "" ] && _notrun "xfs_fsr not found" |
| |
| # Test performs several operations to produce a badly fragmented file, then |
| # create enough contiguous free space for xfs_fsr to defragment the fragmented |
| # file: |
| # |
| # - create fs with 3 minimum sized (16Mb) allocation groups |
| # - create 16x1MB contiguous files which will become large free space extents |
| # when deleted |
| # - put a small "space" between each of the 16 contiuguous files to ensure we |
| # have separated free space extents |
| # - fill the remaining free space with a "fill file" |
| # - mount/unmount/fill remaining free space with a pad file |
| # - punch alternate single block holes in the the "fill file" to create |
| # fragmented free space. |
| # - use fill2 to generate a very large fragmented file |
| # - delete the 16 large contiguous files created initially |
| # - run xfs_fsr on the filesystem |
| # - check checksums for remaining files |
| |
| rm -f $seqres.full |
| _do_die_on_error=message_only |
| |
| echo -n "Make a 48 megabyte filesystem on SCRATCH_DEV and mount... " |
| _scratch_mkfs_xfs -dsize=48m,agcount=3 2>&1 >/dev/null || _fail "mkfs failed" |
| _scratch_mount |
| |
| echo "done" |
| |
| echo -n "Reserve 16 1Mb unfragmented regions... " |
| for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
| do |
| _do "$XFS_IO_PROG -f -c \"resvsp 0 1m\" $SCRATCH_MNT/hole$i" |
| _do "$XFS_IO_PROG -f -c \"resvsp 0 4k\" $SCRATCH_MNT/space$i" |
| _do "xfs_bmap -vp $SCRATCH_MNT/hole$i" |
| done |
| echo "done" |
| |
| # set up filesystem |
| echo -n "Fill filesystem with fill file... " |
| for i in `seq 0 1 31`; do |
| _do "$XFS_IO_PROG -f -c \"falloc ${i}m 1m\" $SCRATCH_MNT/fill" |
| done |
| _do "xfs_bmap -vp $SCRATCH_MNT/fill" |
| echo "done" |
| # flush the filesystem - make sure there is no space "lost" to pre-allocation |
| _do "_scratch_unmount" |
| _do "_try_scratch_mount" |
| echo -n "Use up any further available space... " |
| _do "$XFS_IO_PROG -f -c \"falloc 0 1m\" $SCRATCH_MNT/pad" |
| echo "done" |
| |
| # create fragmented file |
| #_do "Delete every second file" "_cull_files" |
| echo -n "Punch every second 4k block... " |
| for i in `seq 0 8 32768`; do |
| # This generates excessive output that significantly slows down the |
| # test. It's not necessary for debug, so just bin it. |
| $XFS_IO_PROG -f -c "unresvsp ${i}k 4k" $SCRATCH_MNT/fill \ |
| > /dev/null 2>&1 |
| done |
| _do "xfs_bmap -vp $SCRATCH_MNT/fill" |
| _do "sum $SCRATCH_MNT/fill >$tmp.fillsum1" |
| echo "done" |
| |
| echo -n "Create one very large file... " |
| _do "src/fill2 -d nbytes=16000000,file=$SCRATCH_MNT/fragmented" |
| echo "done" |
| _do "xfs_bmap -v $SCRATCH_MNT/fragmented" |
| _do "sum $SCRATCH_MNT/fragmented >$tmp.sum1" |
| _do "Remove other files" "rm -rf $SCRATCH_MNT/{pad,hole*}" |
| |
| # defragment |
| _do "Run xfs_fsr on filesystem" "$XFS_FSR_PROG -v $SCRATCH_MNT/fragmented" |
| _do "xfs_bmap -v $SCRATCH_MNT/fragmented" |
| |
| echo -n "Check fill file... " |
| _do "sum $SCRATCH_MNT/fill >$tmp.fillsum2" |
| if ! _do "diff $tmp.fillsum1 $tmp.fillsum2"; then |
| echo "fail" |
| echo "Fill file is corrupt/missing after fsr. Test failed see $seqres.full" |
| status=1; exit |
| fi |
| echo "done" |
| |
| # check |
| echo -n "Check large file... " |
| _do "sum $SCRATCH_MNT/fragmented >$tmp.sum2" |
| if ! _do "diff $tmp.sum1 $tmp.sum2"; then |
| echo "fail" |
| echo "File is corrupt/missing after fsr. Test failed see $seqres.full" |
| status=1; exit |
| fi |
| echo "done" |
| |
| # success, all done |
| echo "xfs_fsr tests passed." |
| status=0 ; exit |