[libvirt] [PATCH] Improve filtering of Xen domain0 in libvirt-guests

[Jim Fehlig]

The list_guests function in libvirt-guests uses 'grep -v' to filter
Xen domain0 from a list of guests. If domain0 is the only item in
the list, 'grep -v' returns 1, causing the 'stop' operation to fail
when action is 'suspend'. Improve the filtering by using sed to remove
domain0 from the list of guests.

Signed-off-by: Jim Fehlig <jfehlig at suse.com>
---

Failure of the 'stop' operation was fixed in commit 69ed99c7 by marking
domain0 as a persistent domain. That fixes cases where domain0 is the
only domain in the list of persistent domains. But there may be cases
where domain0 is the only domain in 'virsh list --uuid', and the code
should be made more robust to handle those.

 tools/libvirt-guests.sh.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/libvirt-guests.sh.in b/tools/libvirt-guests.sh.in
index 791d9277b..8a158cca4 100644
--- a/tools/libvirt-guests.sh.in
+++ b/tools/libvirt-guests.sh.in
@@ -121,7 +121,7 @@ list_guests() {
         return 1
     fi
 
-    echo "$list" | grep -v 00000000-0000-0000-0000-000000000000
+    echo "$list" | sed "/00000000-0000-0000-0000-000000000000/d"
 }
 
 # guest_name URI UUID
-- 
2.15.1