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 $TESTDIR
  35         sync
  36
  37         # suppress dd xfer stat to workaround buggy coreutils/gettext
  38         # combination in RHEL5 and OEL5, see BZ 21264
  39         FREE_SPACE=$($LFS df $TESTDIR|awk '/filesystem summary:/ {print $5}')
  40         BLKS=$((FREE_SPACE * 9 / 40 / CLIENT_COUNT))
  41         echoerr "Total free disk space is $FREE_SPACE, 4k blocks to dd is $BLKS"
  42
  43         dd bs=4k count=$BLKS status=noxfer if=/dev/zero of=$TESTDIR/dd-file \
  44                                                                 1>$LOG &
  45         load_pid=$!
  46         wait $load_pid
  47
  48         if [ $? -eq 0 ]; then
  49                 echoerr "$(date +'%F %H:%M:%S'): dd succeeded"
  50                 cd $TMP
  51                 rm -rf $TESTDIR
  52                 echoerr "$(date +'%F %H:%M:%S'): dd run finished"
  53         else
  54                 echoerr "$(date +'%F %H:%M:%S'): dd failed"
  55                 if [ -z "$ERRORS_OK" ]; then
  56                         echo $(hostname) >> $END_RUN_FILE
  57                 fi
  58                 if [ $BREAK_ON_ERROR ]; then
  59                         # break
  60                         CONTINUE=false
  61                 fi
  62         fi
  63 done
  64
  65 echoerr "$(date +'%F %H:%M:%S'): dd run exiting"