4 # Ext4 defragmentation stress test
5 # Several threads perform defragmentation at random position
6 # using 'inplace' mode (allocate and free blocks inside defrag event)
7 # which significantly improve load pressure on block allocator.
8 #-----------------------------------------------------------------------
9 # (c) 2013 Dmitry Monakhov
11 # This program is free software; you can redistribute it and/or
12 # modify it under the terms of the GNU General Public License as
13 # published by the Free Software Foundation.
15 # This program is distributed in the hope that it would be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program; if not, write the Free Software Foundation,
22 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #-----------------------------------------------------------------------
28 echo "QA output created by $seq"
32 status=1 # failure is the default!
33 trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
35 # get standard environment, filters and checks
40 # real QA test starts here
47 BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV`
48 # We need space for 2 files (test file, and donor one)
49 # reserve 30% in order to avoid ENOSPC
50 FILE_SIZE=$((BLK_DEV_SIZE * (512 / (2 + 1))))
52 cat >$tmp-$seq.fio <<EOF
53 # Common e4defrag regression tests
57 directory=${SCRATCH_MNT}
64 #################################
66 # Stress test defragmentation engine
67 # Several threads perform defragmentation at random position
68 # use inplace=1 will allocate and free blocks inside defrag event
69 # which highly increase defragmentation
78 numjobs=4*${LOAD_FACTOR}
79 runtime=30*${TIME_FACTOR}
97 runtime=30*${TIME_FACTOR}
105 echo " Start defragment activity"
107 cat $tmp-$seq.fio >> $seq.full
108 run_check $FIO_PROG $tmp-$seq.fio
111 _require_fio $tmp-$seq.fio
113 _scratch_mkfs >> $seq.full 2>&1
117 umount $SCRATCH_DEV 2>/dev/null
121 if ! _scratch_unmount; then
122 echo "failed to umount"