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99d3ece847
Allow the caller of the zpool-create.sh script to override the default path where file vdevs are created. This allows for greated flexibilty when scripting. Additionally, update the default path from /tmp/ to /var/tmp/ because these days /tmp/ is likely a ramdisk. Even though these files are sparse they may grow large in which case they should be backed by a physical device. Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Tim Chase <tim@chase2k.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2120
59 lines
1.7 KiB
Bash
59 lines
1.7 KiB
Bash
#!/bin/bash
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#
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# 4 Device Loopback Raid-0 Configuration
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#
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FILEDIR=${FILEDIR:-/var/tmp}
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FILES_M1=${FILES_M1:-"$FILEDIR/file-vdev0 $FILEDIR/file-vdev1"}
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FILES_M2=${FILES_M2:-"$FILEDIR/file-vdev2 $FILEDIR/file-vdev3"}
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FILES="${FILES_M1} ${FILES_M2}"
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DEVICES_M1=""
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DEVICES_M2=""
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zpool_create() {
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check_loop_utils
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for FILE in ${FILES_M1}; do
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DEVICE=`unused_loop_device`
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msg "Creating ${FILE} using loopback device ${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 || die "Error $? creating ${FILE}"
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${LOSETUP} ${DEVICE} ${FILE} ||
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die "Error $? creating ${FILE} -> ${DEVICE} loopback"
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DEVICES_M1="${DEVICES_M1} ${DEVICE}"
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done
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for FILE in ${FILES_M2}; do
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DEVICE=`unused_loop_device`
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msg "Creating ${FILE} using loopback device ${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 || die "Error $? creating ${FILE}"
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${LOSETUP} ${DEVICE} ${FILE} ||
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die "Error $? creating ${FILE} -> ${DEVICE} loopback"
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DEVICES_M2="${DEVICES_M2} ${DEVICE}"
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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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}
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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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# Delay to ensure device is closed before removing loop device
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sleep 1
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for FILE in ${FILES}; do
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DEVICE=`${LOSETUP} -a | grep ${FILE} | head -n1|cut -f1 -d:`
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msg "Removing ${FILE} using loopback device ${DEVICE}"
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${LOSETUP} -d ${DEVICE} ||
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die "Error $? destroying ${FILE} -> ${DEVICE} loopback"
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rm -f ${FILE} || exit 1
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done
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}
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