93 lines
2.8 KiB
Bash
93 lines
2.8 KiB
Bash
#!/bin/bash
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#
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# 1 scsi_debug device for fault injection and 3 loopback devices
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# on top of which is layered raid10 (mirrored).
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#
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SDSIZE=${SDSIZE:-256}
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SDHOSTS=${SDHOSTS:-1}
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SDTGTS=${SDTGTS:-1}
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SDLUNS=${SDLUNS:-1}
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LDMOD=/sbin/modprobe
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FILEDIR=${FILEDIR:-/var/tmp}
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FILES=${FILES:-"$FILEDIR/file-vdev0 $FILEDIR/file-vdev1 $FILEDIR/file-vdev2"}
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DEVICES_M1=""
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DEVICES_M2=""
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zpool_create() {
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local COUNT=0
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check_loop_utils
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check_sd_utils
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test `${LSMOD} | grep -c scsi_debug` -gt 0 && \
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(echo 0 >/sys/module/scsi_debug/parameters/every_nth && \
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${RMMOD} scsi_debug || exit 1)
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udev_trigger
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msg "${LDMOD} scsi_debug dev_size_mb=${SDSIZE} " \
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"add_host=${SDHOSTS} num_tgts=${SDTGTS} " \
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"max_luns=${SDLUNS}"
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${LDMOD} scsi_debug \
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dev_size_mb=${SDSIZE} \
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add_host=${SDHOSTS} \
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num_tgts=${SDTGTS} \
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max_luns=${SDLUNS} || \
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die "Error $? creating scsi_debug devices"
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udev_trigger
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SDDEVICE=`${LSSCSI}|${AWK} '/scsi_debug/ { print $6; exit }'`
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msg "${PARTED} -s ${SDDEVICE} mklabel gpt"
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${PARTED} -s ${SDDEVICE} mklabel gpt || \
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(${RMMOD} scsi_debug && die "Error $? creating gpt label")
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for FILE in ${FILES}; do
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LODEVICE=`unused_loop_device`
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rm -f ${FILE} || exit 1
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dd if=/dev/zero of=${FILE} bs=1024k count=0 seek=256 \
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&>/dev/null || (${RMMOD} scsi_debug && \
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die "Error $? creating ${FILE}")
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# Setup the loopback device on the file.
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msg "Creating ${LODEVICE} using ${FILE}"
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${LOSETUP} ${LODEVICE} ${FILE} || (${RMMOD} scsi_debug \
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die "Error $? creating ${LODEVICE} using ${FILE}")
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DEVICES="${DEVICES} ${LODEVICE}"
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done
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DEVICES="${DEVICES} ${SDDEVICE}"
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for DEVICE in ${DEVICES}; do
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let COUNT=${COUNT}+1
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if [ $((COUNT % 2)) -eq 0 ]; then
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DEVICES_M2="${DEVICES_M2} ${DEVICE}"
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else
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DEVICES_M1="${DEVICES_M1} ${DEVICE}"
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fi
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done
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msg "${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} " \
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"mirror ${DEVICES_M1} mirror ${DEVICES_M2}"
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${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} \
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mirror ${DEVICES_M1} mirror ${DEVICES_M2} || \
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(${RMMOD} scsi_debug && exit 1)
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}
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zpool_destroy() {
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msg ${ZPOOL} destroy ${ZPOOL_NAME}
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${ZPOOL} destroy ${ZPOOL_NAME}
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for FILE in ${FILES}; do
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LODEVICE=`${LOSETUP} -a | grep ${FILE} | head -n1|cut -f1 -d:`
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msg "Removing ${LODEVICE} using ${FILE}"
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${LOSETUP} -d ${LODEVICE} ||
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die "Error $? destroying ${LODEVICE} using ${FILE}"
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rm -f ${FILE} || exit 1
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done
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msg "${RMMOD} scsi_debug"
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${RMMOD} scsi_debug || die "Error $? removing scsi_debug devices"
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}
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