From cf3d7ce6090a251504811d2981c4f76880ed092b Mon Sep 17 00:00:00 2001
From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Tue, 11 Feb 2020 10:53:29 +0100
Subject: [PATCH] create snapshot copy of instance disk on target_vg

---
 gnt-lv2ssd.sh | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100755 gnt-lv2ssd.sh

diff --git a/gnt-lv2ssd.sh b/gnt-lv2ssd.sh
new file mode 100755
index 0000000..2c19b4e
--- /dev/null
+++ b/gnt-lv2ssd.sh
@@ -0,0 +1,46 @@
+#!/bin/sh -e
+
+instance=$1
+disk=$2
+target_vg=ssd
+
+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,size | grep $instance | tee /dev/shm/$instace.$node.lvs | grep disk${disk}_data | while read lv origin vg size ; 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.sh
+
+	lvcreate -L20480m -s -n$lv.snap /dev/$vg/$lv
+
+	lvcreate -L$size -n$instance.$disk_nr $target_vg
+	
+	ionice dd if=/dev/$vg/$lv.snap of=/dev/$target_vg/$instance.$disk_nr bs=1M status=progress
+
+	lvremove -f /dev/$vg/$lv.snap
+
+	#rm -v /dev/shm/$instance.sh
+__SHELL__
+
+	scp /dev/shm/$instance.sh $node:/dev/shm/$instance.sh
+
+	ssh $node sh -xe /dev/shm/$instance.sh
+
+done
-- 
2.20.1