scripts/zpool-config/lo-raid10.sh

   1 #!/bin/bash
   2 #
   3 # 4 Device Loopback Raid-0 Configuration
   4 #
   5
   6 FILES_M1="/tmp/zpool-vdev0  \
   7           /tmp/zpool-vdev1"
   8 FILES_M2="/tmp/zpool-vdev2  \
   9           /tmp/zpool-vdev3"
  10 FILES="${FILES_M1} ${FILES_M2}"
  11 DEVICES_M1=""
  12 DEVICES_M2=""
  13
  14 zpool_create() {
  15         check_loop_utils
  16
  17         for FILE in ${FILES_M1}; do
  18                 DEVICE=`unused_loop_device`
  19                 msg "Creating ${FILE} using loopback device ${DEVICE}"
  20                 rm -f ${FILE} || exit 1
  21                 dd if=/dev/zero of=${FILE} bs=1024k count=0 seek=256 \
  22                         &>/dev/null || die "Error $? creating ${FILE}"
  23                 ${LOSETUP} ${DEVICE} ${FILE} ||
  24                         die "Error $? creating ${FILE} -> ${DEVICE} loopback"
  25                 DEVICES_M1="${DEVICES_M1} ${DEVICE}"
  26         done
  27
  28         for FILE in ${FILES_M2}; do
  29                 DEVICE=`unused_loop_device`
  30                 msg "Creating ${FILE} using loopback device ${DEVICE}"
  31                 rm -f ${FILE} || exit 1
  32                 dd if=/dev/zero of=${FILE} bs=1024k count=0 seek=256 \
  33                         &>/dev/null || die "Error $? creating ${FILE}"
  34                 ${LOSETUP} ${DEVICE} ${FILE} ||
  35                         die "Error $? creating ${FILE} -> ${DEVICE} loopback"
  36                 DEVICES_M2="${DEVICES_M2} ${DEVICE}"
  37         done
  38
  39         msg ${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} \
  40                 mirror ${DEVICES_M1} mirror ${DEVICES_M2}
  41         ${ZPOOL} create ${FORCE_FLAG} ${ZPOOL_NAME} \
  42                 mirror ${DEVICES_M1} mirror ${DEVICES_M2}
  43 }
  44
  45 zpool_destroy() {
  46         msg ${ZPOOL} destroy ${ZPOOL_NAME}
  47         ${ZPOOL} destroy ${ZPOOL_NAME}
  48
  49         # Delay to ensure device is closed before removing loop device
  50         sleep 1
  51
  52         for FILE in ${FILES}; do
  53                 DEVICE=`${LOSETUP} -a | grep ${FILE} | head -n1|cut -f1 -d:`
  54                 msg "Removing ${FILE} using loopback device ${DEVICE}"
  55                 ${LOSETUP} -d ${DEVICE} ||
  56                         die "Error $? destroying ${FILE} -> ${DEVICE} loopback"
  57                 rm -f ${FILE} || exit 1
  58         done
  59 }