read volume group name from lvs

Instead of ganeti config so we can use multiple volume groups
(in our case separate disk and ssd ones)

diff --git a/gnt-lv-snap-rsync.sh b/gnt-lv-snap-rsync.sh
index f00b08f..4fbc415 100755 (executable)
--- a/gnt-lv-snap-rsync.sh
+++ b/gnt-lv-snap-rsync.sh
@@ -19,11 +19,9 @@ instance=`gnt-instance list --no-headers -o name $instance | head -1`
 node=`gnt-instance list -o pnode --no-headers $instance`
 echo "# $instance on $node"
 
-vg=`gnt-cluster info | grep 'lvm volume group:' | cut -d: -f2 | tr -d ' '`
-
 found_lvm=0
 
-ssh $node lvs -o name,tags | grep $instance | tee /dev/shm/$instace.$node.lvs | grep disk${disk}_data | while read lv origin ; do
+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_`