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https://github.com/linux-apfs/apfstests.git
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defrag: add options to _defrag helper
Sometimes it is not easy to know number of expected extents in advance. In that case it is reasonable to provide sane MIN and MAX values. Also helper will check that number of extents before defragmentaion is not greather than after. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Dmitry Monakhov
committed by
Dave Chinner
Dave Chinner
parent
6bcae5cbe4
commit
2f87a77e0f
+93
-8
@@ -43,29 +43,114 @@ _require_defrag()
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_extent_count()
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{
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$XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l
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$XFS_IO_PROG -c "fiemap" $1 >> $seqres.full 2>&1
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$XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l| $AWK_PROG '{print $1}'
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}
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_check_extent_count()
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{
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min=$1
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max=$2
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ext_cnt=$3
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[ "$min" -gt "$ext_cnt" ] && _fail "Found $ext_cnt extents min:$max"
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[ "$max" -ne -1 ] && [ "$ext_cnt" -gt "$max" ] && _fail "Found $ext_cnt max: $max"
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if [ $max -ne $min ]; then
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echo "in_range($min, $max)"
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else
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echo "$ext_cnt"
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fi
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return $ext_cnt
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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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min_before=0
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max_before=-1
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min_after=0
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max_after=-1
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csum=1
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mtime=1
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while [ $# -gt 1 ]
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do
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case $1
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in
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--min_before)
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[ -z "$2" ] && _fail "missing argument for --min_before"
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min_before=$2
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shift
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;;
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--max_before)
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[ -z "$2" ] && _fail "missing argument for --max_before"
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max_before=$2
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shift
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;;
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--min_after)
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[ -z "$2" ] && _fail "missing argument for --min_after"
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min_after=$2
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shift
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;;
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--max_after)
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[ -z "$2" ] && _fail "missing argument for --max_after"
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max_after=$2
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shift
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;;
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--before)
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[ -z "$2" ] && _fail "missing argument for --before"
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min_before=$2
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max_before=$2
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shift
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;;
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--after)
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[ -z "$2" ] && _fail "missing argument for --after"
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min_after=$2
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max_after=$2
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shift
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;;
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--no_csum)
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csum=
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;;
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--no_mtime)
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mtime=
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;;
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--no_unlink)
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no_unlink=1
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;;
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*)
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_fail "invalid argument to common/dump function: $1"
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;;
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esac
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shift
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done
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echo -n "Before: "
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_extent_count $1
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CSUM_BEFORE=`md5sum $1`
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ext_before=$(_extent_count $1)
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_check_extent_count $min_before $max_before $ext_before
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[ ! -z $csum ] && 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 >> $seqres.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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[ ! -z $csum ] && 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" != "$CSUM_AFTER" ]; then
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ext_after=$(_extent_count $1)
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_check_extent_count $min_after $max_after $ext_after
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[ "$ext_before" -lt "$ext_after" ] && \
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_fail "Number of extents increased after defragmentation," \
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" before:$ext_before, after:$ext_after"
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if [ ! -z $csum ] && [ "$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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if [ ! -z $mtime ] && [ "$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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[ -z $no_unlink ] && rm -f $1
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}
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+6
-6
@@ -60,33 +60,33 @@ rm -f $fragfile
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echo "zero-length file:" | tee -a $seqres.full
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touch $fragfile
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_defrag $fragfile
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_defrag --before 0 --after 0 $fragfile
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echo "Sparse file (no blocks):" | tee -a $seqres.full
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$XFS_IO_PROG -f -c "truncate 1m" $fragfile
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_defrag $fragfile
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_defrag --before 0 --after 0 $fragfile
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echo "Contiguous file:" | tee -a $seqres.full
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dd if=/dev/zero of=$fragfile bs=4k count=4 &>/dev/null
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_defrag $fragfile
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_defrag --before 1 --after 1 $fragfile
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echo "Write backwards sync, but contiguous - should defrag to 1 extent" | tee -a $seqres.full
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for I in `seq 9 -1 0`; do
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dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null
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done
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_defrag $fragfile
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_defrag --before 10 --after 1 $fragfile
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echo "Write backwards sync leaving holes - defrag should do nothing" | tee -a $seqres.full
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for I in `seq 31 -2 0`; do
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dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null
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done
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_defrag $fragfile
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_defrag --before 16 --after 16 $fragfile
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echo "Write forwards sync leaving holes - defrag should do nothing" | tee -a $seqres.full
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for I in `seq 0 2 31`; do
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dd if=/dev/zero of=$fragfile bs=4k count=1 conv=notrunc seek=$I oflag=sync &>/dev/null
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done
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_defrag $fragfile
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_defrag --before 16 --after 16 $fragfile
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rm -f $seqres.full
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status=0
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