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authorSebastian Arcus <s.arcus@open-t.co.uk>2017-06-07 07:17:02 -0500
committerWilly Sudiarto Raharjo <willysr@slackbuilds.org>2017-06-10 10:47:30 +0700
commit942af95bd1342a34bbd0121249b8371e527aae6c (patch)
tree25aee79c3521f5d996b360048fd55df09d77626a /libraries
parent2f03ac59d744b94e13f5b7f4e879b3a1b4db7bfd (diff)
downloadslackbuilds-942af95bd1342a34bbd0121249b8371e527aae6c.tar.gz
libraries/libvirt: managesave running VMs on shutdown by default
Signed-off-by: Robby Workman <rworkman@slackbuilds.org>
Diffstat (limited to 'libraries')
-rw-r--r--libraries/libvirt/README16
-rw-r--r--libraries/libvirt/rc.libvirt65
2 files changed, 72 insertions, 9 deletions
diff --git a/libraries/libvirt/README b/libraries/libvirt/README
index 55b664a2e7..fbe09fd2b6 100644
--- a/libraries/libvirt/README
+++ b/libraries/libvirt/README
@@ -18,6 +18,7 @@ to /etc/rc.d/rc.local
if [ -x /etc/rc.d/rc.libvirt ]; then
/etc/rc.d/rc.libvirt start
fi
+
and if you want it to stop at shutdown add this to
/etc/rc.d/rc.local_shutdown
@@ -26,6 +27,21 @@ and if you want it to stop at shutdown add this to
/etc/rc.d/rc.libvirt stop
fi
+The enclosed rc.libvirt script will do a 'managedsave' on all running
+and paused guests when issuing 'rc.libvirt stop'. Please note that this
+saves the RAM of each guest to the host system's disk (by default under
+/var/lib/libvirt/qemu/save) - so make sure enough space is available. If
+you prefer to perform a full shutdown on all running guests instead,
+issue a 'rc.libvirt guests_shutdown' followed by 'rc.libvirt shutdown'.
+
+By default 'rc.libvirt stop' and 'rc.libvirt guests_shutdown' will wait
+a maximum of 5 minutes for all guests to shutdown, after which any
+guests still running will be destroyed. Adjust this to a suitable value
+for your system, as destroying a running guest carries a high risk of
+data loss!
+
+There is also a 'guests_reboot' for rebooting all running guests.
+
Have a look at the commented part of rc.libvirt for some gotchas.
netcat-openbsd is an optional dependency (needed if you
diff --git a/libraries/libvirt/rc.libvirt b/libraries/libvirt/rc.libvirt
index 844fbcd6c6..18cc374059 100644
--- a/libraries/libvirt/rc.libvirt
+++ b/libraries/libvirt/rc.libvirt
@@ -12,7 +12,7 @@
# on your setup
MODULES="tun vhost_net"
-TIMEOUT=${TIMEOUT:-40}
+TIMEOUT=${TIMEOUT:-300}
LIBVIRTD_PIDFILE="/var/run/libvirt/libvirtd.pid"
LIBVIRTD_OPTS=${LIBVIRT_OPTS:-" -v -f /etc/libvirt/libvirtd.conf -p $LIBVIRTD_PIDFILE "}
VIRTLOGD_PIDFILE="/var/run/libvirt/virtlogd.pid"
@@ -20,15 +20,21 @@ VIRTLOGD_OPTS=${VIRTLOGD_OPTS:-" -v -f /etc/libvirt/virtlogd.conf -p $VIRTLOGD_P
VIRTLOCKD_PIDFILE="/var/run/libvirt/virtlockd.pid"
VIRTLOCKD_OPTS=${VIRTLOCKD_OPTS:-" -v -f /etc/libvirt/virtlockd.conf -p $VIRTLOCKD_PIDFILE "}
-check_running_machines() {
+guests_reboot() {
- count=0
+ for machine in $(/usr/sbin/virsh list --name --state-running | grep -v ^$) ; do
+ /usr/sbin/virsh reboot $machine
+ done
+
+}
+
+guests_shutdown() {
for machine in $(/usr/sbin/virsh list --name --state-running | grep -v ^$) ; do
- /usr/sbin/virsh shutdown $machine
+ /usr/sbin/virsh shutdown $machine &
done
- echo -n "Waiting machines"
+ echo -n "Waiting for guests to finish shutting down"
while [ $(/usr/sbin/virsh list --name --state-running | grep -v ^$ | wc -l) -gt "0" ]; do
if [ "$count" -ge "$TIMEOUT" ];then
@@ -43,18 +49,53 @@ check_running_machines() {
if [ $(/usr/sbin/virsh list --name --state-running | grep -v ^$ | wc -l) -gt "0" ];then
- echo -n "The following machines are still running, forcing shutdown: "
+ echo -n "The following guests are still running, destroying them: "
for machine in $(/usr/sbin/virsh list --name --state-running | grep -v ^$) ; do
/usr/sbin/virsh destroy $machine
echo -n "$machine "
done
- echo ""
sleep 2
fi
}
+
+guests_managedsave() {
+ # apply managedsave on running and paused machines (as we can't distinguish between
+ # the two states while managedsave is being applied, so won't know when to finish waiting)
+
+ count=0
+
+ for machine in $(/usr/sbin/virsh list --name | grep -v ^$) ; do
+ /usr/sbin/virsh managedsave $machine &
+ done
+
+ echo -n "Waiting for managedsave to finish on all guests"
+
+ while [ $(/usr/sbin/virsh list --name | grep -v ^$ | wc -l) -gt "0" ]; do
+ if [ "$count" -ge "$TIMEOUT" ];then
+ break
+ fi
+ echo -n "."
+ count=$(expr $count + 1)
+ sleep 1
+ done
+
+ echo ""
+
+ if [ $(/usr/sbin/virsh list --name | grep -v ^$ | wc -l) -gt "0" ];then
+
+ echo -n "The following guests are still running, destroying them: "
+ for machine in $(/usr/sbin/virsh list --name | grep -v ^$) ; do
+ /usr/sbin/virsh destroy $machine
+ echo -n "$machine "
+ done
+
+ sleep 2
+ fi
+}
+
check_processor() {
egrep 'vmx' /proc/cpuinfo > /dev/null
@@ -96,7 +137,7 @@ stop_libvirtd() {
echo "libvirt is not running..."
exit 2
fi
- check_running_machines
+ guests_managedsave
check_processor
echo "Stopping libvirtd..."
for network in $(/usr/sbin/virsh net-list | tail -n +3 | awk '{print $1}'); do
@@ -167,8 +208,14 @@ restart)
start_virtlogd
start_libvirtd
;;
+guests_shutdown)
+ guests_shutdown
+ ;;
+guests_reboot)
+ guests_reboot
+ ;;
*)
- echo "Usage: $0 (start|stop|restart)"
+ echo "Usage: $0 (start|stop|restart|guests_shutdown|guests_reboot)"
;;
esac