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Theodore Ts'o
76c21d6815
This makes it clear when we are using "mount ; umount" versus "mount
-o remount" for most file systems. The reason for this distinction is
(a) tests may want to test the difference between what happens on the
remount versus the munt paths, (b) with tmpfs, "mount ; umount" will
cause the contents of all of the files to disappear which makes many
tests sad, and (c) some mount options may not be changed using "mount
-o remount".
Currently _scratch_mount performs "_scratch_mount ; _scratch_umount"
so mechnically rename this function to _scratch_cycle_mount. This was
done mechnically using the script fragment:
git grep "_scratch_remount" | \
awk -F: '{print $1}' | sort -u | \
xargs sed -i 's/_scratch_remount/_scratch_cycle_mount/g'
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
107 lines
3.1 KiB
Bash
Executable File
107 lines
3.1 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 192
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#
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# Test fragmentation after a lot of random CoW:
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# - Create two reflinked files. Set extsz hint on second file.
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# - Directio write to random offsets to scatter CoW reservations.
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# - falloc the whole file to unshare blocks.
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# - Check the number of extents.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_supported_fs xfs
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_require_scratch_reflink
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_require_cp_reflink
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_require_fiemap
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_require_xfs_io_command "cowextsize"
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_require_odirect
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rm -f $seqres.full
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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testdir=$SCRATCH_MNT/test-$seq
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mkdir $testdir
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blksz=65536
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nr=128
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filesize=$((blksz * nr))
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bufnr=16
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bufsize=$((blksz * bufnr))
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_require_fs_space $SCRATCH_MNT $((filesize / 1024 * 3 * 5 / 4))
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real_blksz=$(stat -f -c '%S' $testdir)
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internal_blks=$((filesize / real_blksz))
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echo "Create the original files"
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$XFS_IO_PROG -f -c "pwrite -S 0x61 -b $bufsize 0 $((filesize + 1))" $testdir/file1 >> $seqres.full
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$XFS_IO_PROG -f -c "cowextsize $bufsize" $testdir/file2
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_cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
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_scratch_cycle_mount
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echo "Compare files"
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md5sum $testdir/file1 | _filter_scratch
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md5sum $testdir/file2 | _filter_scratch
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echo "CoW and unmount"
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$XFS_IO_PROG -f -c "cowextsize" $testdir/file2 >> $seqres.full
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$XFS_IO_PROG -d -f -c "pwrite -R -S 0x63 -b $real_blksz 0 $filesize" $testdir/file2 >> $seqres.full
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$XFS_IO_PROG -d -f -c "falloc 0 $filesize" $testdir/file2 >> $seqres.full
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_scratch_cycle_mount
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echo "Compare files"
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md5sum $testdir/file1 | _filter_scratch
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echo "Check extent counts"
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old_extents=$(_count_extents $testdir/file1)
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new_extents=$(_count_extents $testdir/file2)
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echo "old extents: $old_extents" >> $seqres.full
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echo "new extents: $new_extents" >> $seqres.full
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echo "maximum extents: $internal_blks" >> $seqres.full
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test $new_extents -lt $((internal_blks / 20)) || test $new_extents -lt 15 \
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|| echo "file2 badly fragmented"
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# success, all done
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status=0
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exit
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