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|
#!/bin/bash
verbose=0
force=0
immediate="-i"
my_name="random_write_cp_verify.sh"
sdeb_s="scsi_debug"
# for dd clones by this author, bs=BS is the logical block size
bs=512
# bpt is Blocks Per Transfer and BS*BPT will be the segment size
# in bytes. Large copies are done a segment at a time.
bpt=64
# Other suitable dd clones are sg_dd (in main sg3_utils src directory
# and ddpt in a package of that name. sgh_dd is in the testing
# directory of the sg3_utils package and needs to be made by hand
# (e.g. 'cd sg3_utils_src ; ./bootstrap ; ./configure ; make ;
# cd testing ; make sgh_dd'
## dd_clone="/home/dougg/scsi/sg3_utils/svn/testing/sgh_dd"
dd_clone="sg_dd"
## dd_clone="ddpt"
usage()
{
echo "Usage: random_write_cp_verify [-f] [-h] [-v] [-w] <device1> <device2>"
echo " where:"
echo " -f, --force needed if <device1> or <device2> is not"
echo " generated by the scsi_debug module"
echo " -h, --help print usage message"
echo " -v, --verbose more verbose output"
echo " -w, --wait wait for each start to complete"
echo " <device1> random data will be written to this device"
echo " <device2> data on <device1> copied to this device"
echo ""
echo "Writes random data to first disk/device then copies that to second"
echo "disk/device. Then it does a verify/compare of the two devices."
echo "BEWARE: the contents of <device1> and <device2> will be DESTROYED."
}
# Additional command line options/operands can be added to or removed from
# th SDP_OPTS array
SDP_OPTS=( "bs=${bs}" "bpt=${bpt}" -v iflag=sgio oflag=sgio )
##SDP_OPTS=( "bs=${bs}" "bpt=${bpt}" -v iflag=pt oflag=pt )
# echo "${SDP_OPTS[@]}"
opt="$1"
while test ! -z "$opt" -a -z "${opt##-*}"; do
opt=${opt#-}
case "$opt" in
f|-force) force=$((${force} + 1)) ;;
h|-help) usage ; exit 0 ;;
v|-verbose) verbose=$((${verbose} + 1)) ;;
w|-wait) immediate="" ;;
*) echo "Unknown option: -$opt " ; echo "" ; usage ;exit 1 ;;
esac
shift
opt="$1"
done
if [ $# -lt 2 ]
then
echo "Missing arguments ..."
echo ""
usage
exit 1
fi
echo "verbose=${verbose}"
if [ -d /sys/class/scsi_host ] && [ ! -w /sys/class/scsi_host ]; then
echo "You need to run ${my_name} as root"
exit 2
fi
INQ=$(sg_inq --maxlen=36 ${1} 2>/dev/null)
if [ ${?} -ne 0 ]; then
echo "unable to open ${1} with sg_inq"
exit
fi
IPROD=$(echo "$INQ" | grep 'Product identification:' | sed 's/^[^:]*: \(.*\)$/\1/')
if [ ${IPROD} != ${sdeb_s} ]; then
if [ ${force} -lt 2 ]; then
echo -n "need to give use scsi_debug device or use '--force' "
echo "twice"
exit 2
fi
fi
INQ=$(sg_inq --maxlen=36 ${2} 2>/dev/null)
if [ ${?} -ne 0 ]; then
echo "unable to open ${2} with sg_inq"
exit
fi
IPROD=$(echo "$INQ" | grep 'Product identification:' | sed 's/^[^:]*: \(.*\)$/\1/')
if [ ${IPROD} != ${sdeb_s} ]; then
if [ ${force} -lt 2 ]; then
echo -n "need to give use scsi_debug device or use '--force' "
echo "twice"
exit 2
fi
fi
# Write random data to $1
echo ${dd_clone} iflag=random of=${1} "${SDP_OPTS[@]}"
${dd_clone} iflag=random of=${1} "${SDP_OPTS[@]}"
if [ ${?} -ne 0 ]; then
exit
fi
# Copy $1 to $2
echo ${dd_clone} if=${1} of=${2} "${SDP_OPTS[@]}"
${dd_clone} if=${1} of=${2} "${SDP_OPTS[@]}"
if [ ${?} -ne 0 ]; then
exit
fi
# Compare/verify that $1 and $2 are the same. Reports miscompare
# on first segment/lock/byte that isn't the same.
echo ${dd_clone} --verify if=${1} of=${2} "${SDP_OPTS[@]}"
${dd_clone} --verify if=${1} of=${2} "${SDP_OPTS[@]}"
if [ ${?} -ne 0 ]; then
exit
fi
|
