Add hotplug test script

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/test/hotplug-device.sh b/test/hotplug-device.sh
new file mode 100755 (executable)
index 0000000..8084521
--- /dev/null
+++ b/test/hotplug-device.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+
+devmapper_name=meep
+file=test.ext2
+
+if [ $# -lt 1 ]
+then
+       cat <<EOF
+usage: $0 [add [path]|remove]
+       if <path> is specified, initialise the contents of the hotplugged
+       device from the directory at <path>
+EOF
+       exit 1
+fi
+
+sudo true
+
+set -ex
+
+case "$1"
+in
+       add)
+               dd if=/dev/zero of=$file bs=1k count=640
+               mkfs.ext2 -F -m0 $file
+
+               loopdev=$(sudo losetup -f --show $loopdev $file)
+               echo loop device is $loopdev
+
+               if [ -d $2 ]
+               then
+                       mkdir -p mount.tmp
+                       sudo mount $loopdev mount.tmp
+                       sudo rsync -av $2 mount.tmp/
+                       sudo umount mount.tmp
+               fi
+
+               blocksize=$(sudo blockdev --getsize $loopdev)
+               echo block size = $blocksize
+
+               sudo dmsetup create $devmapper_name \
+                       --table "0 $blocksize linear $loopdev 0"
+       ;;
+       remove)
+               set +e
+               awk '/^\/dev\/mapper\/'$devmapper_name'/ {print $2}' \
+                               /proc/mounts |
+               while read mountpoint
+               do
+                       sudo umount $mountpoint
+               done
+               sudo dmsetup remove $devmapper_name
+
+               sudo losetup -j $file | cut -f1 -d: |
+               while read loopdev
+               do
+                       sudo losetup -d $loopdev
+               done
+       ;;
+
+esac