freebsd-nq/scripts/zpool-config/lo-raidz.sh
Brian Behlendorf 608860b6d0 Delay before destroying loopback devices
Generally I don't approve of just adding an arbitrary delay to
avoid a problem but in this case I'm going to let it slide.  We
may need to delay briefly after 'zpool destroy' returns to ensure
the loopback devices are closed.  If they aren't closed than
losetup -d will not be able to destroy them.  Unfortunately,
there's no easy state the check so we'll have to make due with
a simple delay.
2011-06-03 14:38:25 -07:00

45 lines
1.1 KiB
Bash

#!/bin/bash
#
# 4 Device Loopback Raid-0 Configuration
#
FILES="/tmp/zpool-vdev0 \
/tmp/zpool-vdev1 \
/tmp/zpool-vdev2 \
/tmp/zpool-vdev3"
DEVICES=""
zpool_create() {
check_loop_utils
for FILE in ${FILES}; do
DEVICE=`unused_loop_device`
msg "Creating ${FILE} using loopback device ${DEVICE}"
rm -f ${FILE} || exit 1
dd if=/dev/zero of=${FILE} bs=1024k count=0 seek=256 \
&>/dev/null || die "Error $? creating ${FILE}"
${LOSETUP} ${DEVICE} ${FILE} ||
die "Error $? creating ${FILE} -> ${DEVICE} loopback"
DEVICES="${DEVICES} ${DEVICE}"
done
msg ${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} raidz ${DEVICES}
${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} raidz ${DEVICES} || exit 1
}
zpool_destroy() {
msg ${ZPOOL} destroy ${ZPOOL_NAME}
${ZPOOL} destroy ${ZPOOL_NAME}
# Delay to ensure device is closed before removing loop device
sleep 1
for FILE in ${FILES}; do
DEVICE=`${LOSETUP} -a | grep ${FILE} | head -n1|cut -f1 -d:`
msg "Removing ${FILE} using loopback device ${DEVICE}"
${LOSETUP} -d ${DEVICE} ||
die "Error $? destroying ${FILE} -> ${DEVICE} loopback"
rm -f ${FILE} || exit 1
done
}