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https://github.com/linux-apfs/apfstests.git
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Eric Sandeen
76f4a7b9fa
This test creates some files, runs defrag on them, and compares the before/after fragmentation as well as file md5sums and timestamps. The test currently expects to find e4defrag in /usr/bin It should be relatively easy to add more interestingly fragmented files to the tests, as well as to test that memory-mapped files aren't touched, etc - but this gives us a framework. V2: remount before checking file contents, and create common.defrag. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de>
69 lines
1.7 KiB
Plaintext
69 lines
1.7 KiB
Plaintext
##/bin/sh
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#
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# Copyright (c) 2009 Eric Sandeen
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# 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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#
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# Functions useful for defragmentation tests
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#
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_require_defrag()
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{
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case "$FSTYP" in
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xfs)
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DEFRAG_PROG=/usr/sbin/xfs_fsr
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;;
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ext4)
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DEFRAG_PROG=/usr/bin/e4defrag
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;;
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*)
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_notrun "defragmentation not supported for fstype \"$FSTYP\""
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;;
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esac
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_require_command $DEFRAG_PROG
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_require_command /usr/sbin/filefrag
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}
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_extent_count()
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{
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filefrag $1 | awk '{print $2}'
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filefrag -v $1 >> $seq.full 2>&1
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}
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# Defrag file, check it, and remove it.
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_defrag()
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{
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echo -n "Before: "
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_extent_count $1
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CSUM_BEFORE=`md5sum $1`
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STAT_BEFORE=`stat -c "a: %x m: %y c: %z" $1`
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$DEFRAG_PROG -v $1 >> $seq.full 2>&1
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_scratch_remount
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STAT_AFTER=`stat -c "a: %x m: %y c: %z" $1`
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CSUM_AFTER=`md5sum $1`
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echo -n "After: "
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_extent_count $1
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if [ "$CSUM_BEFORE" != "$CSUM_AFTER" ]; then
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_fail "file checksum changed post-defrag ($CSUM_BEFORE/$CSUM_AFTER)"
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fi
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if [ "$STAT_BEFORE" != "$STAT_AFTER" ]; then
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_fail "file timestamps changed post-defrag:\n$STAT_BEFORE\n$STAT_AFTER"
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fi
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rm -f $1
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}
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