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|
##/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2009 Eric Sandeen. All Rights Reserved.
#
# Functions useful for defragmentation tests
_require_defrag()
{
case "$FSTYP" in
xfs)
# xfs_fsr does preallocates, require "falloc"
_require_xfs_io_command "falloc"
DEFRAG_PROG="$XFS_FSR_PROG"
;;
ext4|ext4dev)
testfile="$TEST_DIR/$$-test.defrag"
donorfile="$TEST_DIR/$$-donor.defrag"
bsize=`_get_block_size $TEST_DIR`
$XFS_IO_PROG -f -c "pwrite -b $bsize 0 $bsize" $testfile > /dev/null
cp $testfile $donorfile
echo $testfile | $here/src/e4compact -v -f $donorfile | \
grep -q "err:95"
if [ $? -eq 0 ]; then
rm -f $testfile $donorfile 2>&1 > /dev/null
_notrun "$FSTYP test filesystem doesn't support online defrag"
fi
rm -f $testfile $donorfile 2>&1 > /dev/null
DEFRAG_PROG="$E4DEFRAG_PROG"
;;
f2fs)
DEFRAG_PROG="$F2FS_IO_PROG defrag_file"
;;
btrfs)
DEFRAG_PROG="$BTRFS_UTIL_PROG filesystem defragment"
;;
*)
_notrun "defragmentation not supported for fstype \"$FSTYP\""
;;
esac
_require_command "$DEFRAG_PROG" defragment
_require_xfs_io_command "fiemap"
}
_extent_count()
{
$XFS_IO_PROG -c "fiemap" $1 >> $seqres.full 2>&1
$XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l| $AWK_PROG '{print $1}'
}
_check_extent_count()
{
min=$1
max=$2
ext_cnt=$3
# Return failure if $3 isn't between $1 and $2; let caller decide
# action if it's not, we just return status here.
if [ "$min" -gt "$ext_cnt" ]; then
echo "Found $ext_cnt extents min:$max"
return 1;
fi
if [ "$max" -ne -1 ] && [ "$ext_cnt" -gt "$max" ]; then
echo "Found $ext_cnt max: $max"
return 1;
fi
if [ $max -ne $min ]; then
echo "in_range($min, $max)"
else
echo "$ext_cnt"
fi
# success
return 0
}
# Defrag file, check it, and remove it.
_defrag()
{
min_before=0
max_before=-1
min_after=0
max_after=-1
csum=1
mtime=1
while [ $# -gt 1 ]
do
case $1
in
--min_before)
[ -z "$2" ] && _fail "missing argument for --min_before"
min_before=$2
shift
;;
--max_before)
[ -z "$2" ] && _fail "missing argument for --max_before"
max_before=$2
shift
;;
--min_after)
[ -z "$2" ] && _fail "missing argument for --min_after"
min_after=$2
shift
;;
--max_after)
[ -z "$2" ] && _fail "missing argument for --max_after"
max_after=$2
shift
;;
--before)
[ -z "$2" ] && _fail "missing argument for --before"
min_before=$2
max_before=$2
shift
;;
--after)
[ -z "$2" ] && _fail "missing argument for --after"
min_after=$2
max_after=$2
shift
;;
--no_csum)
csum=
;;
--no_mtime)
mtime=
;;
--no_unlink)
no_unlink=1
;;
*)
_fail "invalid argument to common/dump function: $1"
;;
esac
shift
done
echo -n "Before: "
ext_before=$(_extent_count $1)
_check_extent_count $min_before $max_before $ext_before
[ $? -eq 0 ] || _notrun "Could not adequately fragment file"
[ ! -z $csum ] && CSUM_BEFORE=`md5sum $1`
STAT_BEFORE=`stat -c "a: %x m: %y c: %z" $1`
if [ $FSTYP == "f2fs" ]; then
local filesize=`ls -l $1 | $AWK_PROG '{print $5}'`
$DEFRAG_PROG 0 $filesize $1 >> $seqres.full 2>&1
else
$DEFRAG_PROG -v $1 >> $seqres.full 2>&1
fi
_scratch_cycle_mount
STAT_AFTER=`stat -c "a: %x m: %y c: %z" $1`
[ ! -z $csum ] && CSUM_AFTER=`md5sum $1`
echo -n "After: "
ext_after=$(_extent_count $1)
_check_extent_count $min_after $max_after $ext_after
[ $? -eq 0 ] || _fail "Failed to adequately defragment file"
[ "$ext_before" -lt "$ext_after" ] && \
_fail "Number of extents increased after defragmentation," \
" before:$ext_before, after:$ext_after"
if [ ! -z $csum ] && [ "$CSUM_BEFORE" != "$CSUM_AFTER" ]; then
_fail "file checksum changed post-defrag ($CSUM_BEFORE/$CSUM_AFTER)"
fi
if [ ! -z $mtime ] && [ "$STAT_BEFORE" != "$STAT_AFTER" ]; then
_fail "file timestamps changed post-defrag:\n$STAT_BEFORE\n$STAT_AFTER"
fi
[ -z $no_unlink ] && rm -f $1
}
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