[lxc-devel] [PATCH 1/1] lxc-clone: change uuid on xfs

[Serge Hallyn]

Otherwise after cloning an lvm+xfs container you can't run the
original and clone at the same time.

Based on a patch by Maurizio Sambati posted at
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1013549

Signed-off-by: Serge Hallyn <serge.hallyn at ubuntu.com>
---
 src/lxc/lxc-clone.in |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/lxc/lxc-clone.in b/src/lxc/lxc-clone.in
index c7413f2..13cb712 100644
--- a/src/lxc/lxc-clone.in
+++ b/src/lxc/lxc-clone.in
@@ -199,7 +199,13 @@ if [ -b $oldroot ]; then
         lxc-freeze -n $lxc_orig
         frozen=1
     fi
-    lvcreate -s -L $lxc_size -n ${lxc_lv_prefix}${lxc_new}_snapshot $oldroot
+    newlv="${lxc_lv_prefix}${lxc_new}_snapshot"
+    lvcreate -s -L $lxc_size -n $newlv $oldroot
+    type xfs_admin > /dev/null 2>&1 && {
+        # change filesystem UUID if it is an xfs filesystem
+        xfs_admin -u /dev/$lxc_vg/$newlv && xfs_admin -U generate /dev/$lxc_vg/$newlv
+    }
+	     
     if [ $container_running = "True" ]; then
         lxc-unfreeze -n $lxc_orig
         frozen=0
-- 
1.7.9.5