80 lines
2.4 KiB
Bash
80 lines
2.4 KiB
Bash
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#!/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 raid0 (striped).
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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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FILES="/tmp/zpool-vdev0 \
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/tmp/zpool-vdev1 \
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/tmp/zpool-vdev2"
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DEVICES=""
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zpool_create() {
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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} ${SDDEVICE}"
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msg "${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} ${DEVICES}"
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${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} ${DEVICES} || \
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(${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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