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[fs/lustre-release.git] / lustre / tests / run_dd.sh
1 #!/bin/bash
2
3 TMP=${TMP:-/tmp}
4
5 TESTLOG_PREFIX=${TESTLOG_PREFIX:-$TMP/recovery-mds-scale}
6 TESTNAME=${TESTNAME:-""}
7 [ -n "$TESTNAME" ] && TESTLOG_PREFIX=$TESTLOG_PREFIX.$TESTNAME
8
9 LOG=$TESTLOG_PREFIX.$(basename $0 .sh)_stdout.$(hostname -s).log
10 DEBUGLOG=$(echo $LOG | sed 's/\(.*\)stdout/\1debug/')
11
12 mkdir -p ${LOG%/*}
13
14 rm -f $LOG $DEBUGLOG
15 exec 2>$DEBUGLOG
16 set -x
17
18 . $(dirname $0)/functions.sh
19
20 assert_env MOUNT END_RUN_FILE LOAD_PID_FILE LFS CLIENT_COUNT
21
22 trap signaled TERM
23
24 # recovery-*-scale scripts use this to signal the client loads to die
25 echo $$ >$LOAD_PID_FILE
26
27 TESTDIR=$MOUNT/d0.dd-$(hostname)
28
29 CONTINUE=true
30 while [ ! -e "$END_RUN_FILE" ] && $CONTINUE; do
31         echoerr "$(date +'%F %H:%M:%S'): dd run starting"
32         mkdir -p $TESTDIR
33         $LFS setstripe -c -1 $TESTDIR
34         cd $TESTDIR
35         # suppress dd xfer stat to workaround buggy coreutils/gettext
36         # combination in RHEL5 and OEL5, see BZ 21264
37         FREE_SPACE=$($LFS df $TESTDIR|awk '/filesystem summary:/ {print $5}')
38         BLKS=$((FREE_SPACE * 9 / 40 / CLIENT_COUNT))
39         echoerr "Total free disk space is $FREE_SPACE, 4k blocks to dd is $BLKS"
40
41         dd bs=4k count=$BLKS status=noxfer if=/dev/zero of=$TESTDIR/dd-file \
42                                                                 1>$LOG &
43         load_pid=$!
44         wait $load_pid
45
46         if [ $? -eq 0 ]; then
47                 echoerr "$(date +'%F %H:%M:%S'): dd succeeded"
48                 cd $TMP
49                 rm -rf $TESTDIR
50                 echoerr "$(date +'%F %H:%M:%S'): dd run finished"
51         else
52                 echoerr "$(date +'%F %H:%M:%S'): dd failed"
53                 if [ -z "$ERRORS_OK" ]; then
54                         echo $(hostname) >> $END_RUN_FILE
55                 fi
56                 if [ $BREAK_ON_ERROR ]; then
57                         # break
58                         CONTINUE=false
59                 fi
60         fi
61 done
62
63 echoerr "$(date +'%F %H:%M:%S'): dd run exiting"