libvirt-guests.sh when run with more active guests than requested to
shut down in parallel will run until it times out only shutting down
the first set of guests.

This patch fixes parallel shutdown by fixing a variable scope issue
where check_guests_shutdown unintentionally reset $guests which
prevented further progress.

Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1688508

Signed-off-by: Christian Ehrhardt <christian.ehrha...@canonical.com>
---
 tools/libvirt-guests.sh.in | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/libvirt-guests.sh.in b/tools/libvirt-guests.sh.in
index d5e68e5..fcada31 100644
--- a/tools/libvirt-guests.sh.in
+++ b/tools/libvirt-guests.sh.in
@@ -333,11 +333,11 @@ guest_count()
 check_guests_shutdown()
 {
     uri=$1
-    guests=$2
+    guests_to_check=$2
 
     guests_shutting_down=
     for guest in $guests; do
-        if ! guest_is_on "$uri" "$guest" >/dev/null 2>&1; then
+        if ! guest_is_on "$uri" "$guests_to_check" >/dev/null 2>&1; then
             eval_gettext "Failed to determine state of guest: \$guest. Not 
tracking it anymore."
             echo
             continue
-- 
2.7.4

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