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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
78 lines
2.6 KiB
Bash
78 lines
2.6 KiB
Bash
#!/bin/bash
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#
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# 4 loopback devices using the md faulty level for easy
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# fault injection on top of which is layered raid0 (striped).
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#
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# zpool-vdev0 zpool-vdev1 zpool-vdev2 zpool-vdev3
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# loop0 loop1 loop2 loop3
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# md0 (faulty) md1 (faulty) md2 (faulty) md3 (faulty)
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# <--------------------- raid0 zpool --------------------->
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#
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FILEDIR=${FILEDIR:-/var/tmp}
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FILES=${FILES:-"$FILEDIR/file-vdev0 $FILEDIR/file-vdev1 \
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$FILEDIR/file-vdev2 $FILEDIR/file-vdev3"}
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LODEVICES=""
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MDDEVICES=""
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zpool_create() {
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check_loop_utils
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check_md_utils
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check_md_partitionable || die "Error non-partitionable md devices"
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for FILE in ${FILES}; do
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LODEVICE=`unused_loop_device`
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MDDEVICE=`unused_md_device`
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rm -f ${FILE} || exit 1
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dd if=/dev/zero of=${FILE} bs=1M count=0 seek=256 \
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&>/dev/null || 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} || \
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die "Error $? creating ${LODEVICE} using ${FILE}"
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LODEVICES="${LODEVICES} ${LODEVICE}"
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# Setup the md device on the loopback device.
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msg "Creating ${MDDEVICE} using ${LODEVICE}"
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${MDADM} --build ${MDDEVICE} --level=faulty \
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--raid-devices=1 ${LODEVICE} &>/dev/null || \
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(destroy_md_devices "${MDDEVICES}" && \
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destroy_loop_devices "${LODEVICES}" && \
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die "Error $? creating ${MDDEVICE} using ${LODEVICE}")
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wait_udev ${MDDEVICE} 30 || \
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(destroy_md_devices "${MDDEVICES}" && \
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destroy_loop_devices "${LODEVICES}" && \
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die "Error udev never created ${MDDEVICE}")
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# Check if the md device support partitions
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${BLOCKDEV} --rereadpt ${MDDEVICE} 2>/dev/null || \
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(destroy_md_devices "${MDDEVICES}" && \
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destroy_loop_devices "${LODEVICES}" && \
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die "Error ${MDDEVICE} does not support partitions")
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# Create a GPT/EFI partition table for ZFS to use.
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${PARTED} --script ${MDDEVICE} mklabel gpt
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MDDEVICES="${MDDEVICES} ${MDDEVICE}"
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done
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msg ${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} ${MDDEVICES}
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${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} ${MDDEVICES} || \
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(destroy_md_devices "${MDDEVICES}" && \
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destroy_loop_devices "${LODEVICES}" && exit 1)
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echo "$LODEVICES" >/tmp/zpool-lo.txt
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echo "$MDDEVICES" >/tmp/zpool-md.txt
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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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destroy_md_devices "`cat /tmp/zpool-md.txt`"
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destroy_loop_devices "`cat /tmp/zpool-lo.txt`"
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rm -f /tmp/zpool-md.txt /tmp/zpool-lo.txt
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}
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