# result file prefix. date/time+hostname makes unique
# NB ensure the path exists if it includes subdirs
-rslt=${rslt:-"/tmp/sgpdd_survey_`date +%F@%R`_`uname -n`"}
+rslt_loc=${rslt_loc:-"/tmp"}
+rslt=${rslt:-"$rslt_loc/sgpdd_survey_`date +%F@%R`_`uname -n`"}
# what to do (read or write)
actions=${actions:-"write read"}
# we will test for a LUN, the test for a partition
# if the partition number is > 9 this will fail
for d in $scsidevs; do
- devs[$i]=`sg_map | awk "{if ($ 2 == \"$d\") print $ 1}"`
+ devs[$i]=`sg_map | awk "{if (\\\$2 == \"$d\") print \\\$1}"`
if [ -z "${devs[i]}" ]; then
echo "Can't find SG device for $d, testing for partition"
pt=`echo $d | sed 's/[0-9]$//'`
# Try again
- devs[$i]=`sg_map | awk "{if ($ 2 == \"$pt\") print $ 1}"`
+ devs[$i]=`sg_map | awk "{if (\\\$2 == \"$pt\") print \\\$1}"`
if [ -z "${devs[i]}" ]; then
echo "Can't find SG device $pt"
exit 1
# determine block size. This should also work for raw devices
# If it fails, set to 512
-bs=$((`sg_readcap -b ${devs[0]} |awk '{print $2}'`))
+bs=$((`sg_readcap -b ${devs[0]} | awk '{print $2}'`))
if [ $bs == 0 ];then
echo "sg_readcap failed, setting block size to 512"
bs=512
t0=`date +%s.%N`
for ((i=0;i<ndevs;i++)); do
dev=${devs[i]}
+ devsize=$((bs*`sg_readcap -b ${dev} | awk '{print $1}'`/1024))
+ if [ $devsize -lt $actual_size ]; then
+ echo -e "device $(sg_map | grep $dev | awk '{ print $2; }') not big enough: $devsize < $actual_size.\nConsider reducing \$size"
+ exit 1
+ fi
if [ $action = read ]; then
inf="if=$dev"
outf="of=/dev/null"