scripts/zfs.sh

   1 #!/bin/bash
   2 #
   3 # A simple script to simply the loading/unloading the ZFS module stack.
   4
   5 basedir="$(dirname $0)"
   6
   7 SCRIPT_COMMON=common.sh
   8 if [ -f "${basedir}/${SCRIPT_COMMON}" ]; then
   9 . "${basedir}/${SCRIPT_COMMON}"
  10 else
  11 echo "Missing helper script ${SCRIPT_COMMON}" && exit 1
  12 fi
  13
  14 PROG=zfs.sh
  15 UNLOAD=
  16
  17 usage() {
  18 cat << EOF
  19 USAGE:
  20 $0 [hvud] [module-options]
  21
  22 DESCRIPTION:
  23         Load/unload the ZFS module stack.
  24
  25 OPTIONS:
  26         -h      Show this message
  27         -v      Verbose
  28         -u      Unload modules
  29         -d      Save debug log on unload
  30
  31 MODULE-OPTIONS:
  32         Must be of the from module="options", for example:
  33
  34 $0 zfs="zfs_prefetch_disable=1"
  35 $0 zfs="zfs_prefetch_disable=1 zfs_mdcomp_disable=1"
  36 $0 spl="spl_debug_mask=0"
  37
  38 EOF
  39 }
  40
  41 while getopts 'hvud' OPTION; do
  42         case $OPTION in
  43         h)
  44                 usage
  45                 exit 1
  46                 ;;
  47         v)
  48                 VERBOSE=1
  49                 ;;
  50         u)
  51                 UNLOAD=1
  52                 ;;
  53         d)
  54                 DUMP_LOG=1
  55                 ;;
  56         ?)
  57                 usage
  58                 exit
  59                 ;;
  60         esac
  61 done
  62
  63 if [ $(id -u) != 0 ]; then
  64         die "Must run as root"
  65 fi
  66
  67 if [ ${UNLOAD} ]; then
  68         umount -t zfs -a
  69         stack_check
  70         unload_modules
  71 else
  72         stack_clear
  73         check_modules || die "${ERROR}"
  74         load_modules "$@"
  75         wait_udev /dev/zfs 30
  76 fi
  77
  78 exit 0