just create snapshot of lvm, zamd will pull it

diff --git a/gnt-lv-snap-shell.sh b/gnt-lv-snap-shell.sh
new file mode 100755 (executable)
index 0000000..819abc2
--- /dev/null
+++ b/gnt-lv-snap-shell.sh
@@ -0,0 +1,58 @@
+#!/bin/sh -e
+
+instance=$1
+disk=$2
+test -z "$backup" && backup="backup"
+
+if [ "$1" = '-' ] ; then
+       read instance disk
+elif [ -z "$instance" -o -z "$disk" ] ; then
+       echo "Usage: $0 instance disk"
+       exit 1
+fi
+
+test -z "$instance" && exit 1
+
+instance=`gnt-instance list --no-headers -o name $instance | head -1`
+
+node=`gnt-instance list -o pnode --no-headers $instance`
+echo "# $instance on $node"
+
+found_lvm=0
+
+ssh $node lvs -o name,tags,vg_name | grep $instance | tee /dev/shm/$instace.$node.lvs | grep disk${disk}_data | while read lv origin vg ; do
+       found_lvm=1
+
+       disk_nr=`echo $lv | cut -d. -f2 | tr -d a-z_`
+       echo "# $lv | $origin | $disk_nr"
+
+cat <<__SHELL__ > /dev/shm/$instance-mount.sh
+
+       lvcreate -L10240m -s -n$lv.snap /dev/$vg/$lv
+
+       mkdir /dev/shm/$lv.snap
+
+       # we must mount filesystem read-write to allow journal recovery
+       offset=\`fdisk -l /dev/$vg/$lv.snap -u | grep Linux | grep /dev/$vg/$lv.snap | head -1 | sed 's/\*/ /' | awk '{ print \$2 * 512 }'\`
+       test ! -z "\$offset" && offset=",offset=\$offset"
+       mount /dev/$vg/$lv.snap /dev/shm/$lv.snap -o noatime\$offset
+
+       echo "rsync-from $node:/dev/shm/$lv.snap/"
+
+__SHELL__
+
+cat <<__SHELL__ > /dev/shm/$instance-umount.sh
+       umount /dev/shm/$lv.snap
+
+       lvremove -f /dev/$vg/$lv.snap
+
+       rmdir /dev/shm/$lv.snap
+__SHELL__
+
+       scp /dev/shm/$instance-*.sh $node:/dev/shm/
+
+       ssh $node sh -xe /dev/shm/$instance-mount.sh
+
+       echo "ssh $node sh -xe /dev/shm/$instance-umount.sh"
+
+done