git.ozlabs.org Git - petitboot/blob - test/hotplug-device.sh

   1 #!/bin/bash
   2
   3
   4 devmapper_name=meep
   5 file=test.ext2
   6
   7 if [ $# -lt 1 ]
   8 then
   9         cat <<EOF
  10 usage: $0 [add [path]|remove]
  11         if <path> is specified, initialise the contents of the hotplugged
  12         device from the directory at <path>
  13 EOF
  14         exit 1
  15 fi
  16
  17 sudo true
  18
  19 set -ex
  20
  21 case "$1"
  22 in
  23         add)
  24                 dd if=/dev/zero of=$file bs=1k count=640
  25                 mkfs.ext2 -F -m0 $file
  26
  27                 loopdev=$(sudo losetup -f --show $loopdev $file)
  28                 echo loop device is $loopdev
  29
  30                 if [ -d $2 ]
  31                 then
  32                         mkdir -p mount.tmp
  33                         sudo mount $loopdev mount.tmp
  34                         sudo rsync -av $2 mount.tmp/
  35                         sudo umount mount.tmp
  36                 fi
  37
  38                 blocksize=$(sudo blockdev --getsize $loopdev)
  39                 echo block size = $blocksize
  40
  41                 sudo dmsetup create $devmapper_name \
  42                         --table "0 $blocksize linear $loopdev 0"
  43         ;;
  44         remove)
  45                 set +e
  46                 awk '/^\/dev\/mapper\/'$devmapper_name'/ {print $2}' \
  47                                 /proc/mounts |
  48                 while read mountpoint
  49                 do
  50                         sudo umount $mountpoint
  51                 done
  52                 sudo dmsetup remove $devmapper_name
  53
  54                 sudo losetup -j $file | cut -f1 -d: |
  55                 while read loopdev
  56                 do
  57                         sudo losetup -d $loopdev
  58                 done
  59         ;;
  60
  61 esac