2 trap 'kill $(jobs -p)' EXIT
6 MAX_MB=${RACER_MAX_MB:-8}
8 . $LUSTRE/tests/test-framework.sh
10 OSTCOUNT=${OSTCOUNT:-$($LFS df $DIR 2> /dev/null | grep -c OST)}
14 # check if it supports PFL layout
15 [[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.10.0) ]] &&
18 # check if it supports DoM
19 [[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.10.53) ]] &&
22 echo "layout: ${layout[*]}"
25 file=$((RANDOM % MAX))
26 # $RANDOM is between 0 and 32767, and we want $blockcount in 64kB units
27 blockcount=$((RANDOM * MAX_MB / 32 / 64))
28 stripecount=$((RANDOM % (OSTCOUNT + 1)))
30 [ $stripecount -gt 0 ] && {
31 stripesize=$(((RANDOM % 16 + 1) * 64))K
32 pattern=${layout[$RANDOM % ${#layout[*]}]}
35 dom) opt="-E $stripesize -L mdt -E eof -c $stripecount -S 1M" ;;
36 pfl) opt="-E 1M -S $stripesize -E eof -c $stripecount -S 2M" ;;
37 raid0) opt="-S $stripesize -c $stripecount" ;;
40 $LFS setstripe $opt $DIR/$file 2> /dev/null || true
43 # offset between 0 and 16MB (256 64k chunks), with 1/2 at offset 0
44 seek=$((RANDOM / 64)); [ $seek -gt 256 ] && seek=0
45 dd if=/dev/zero of=$DIR/$file bs=64k count=$blockcount \
46 seek=$seek 2> /dev/null || true