libvirt
Version 3.1 by Sebastian Marsching on 2022/03/27 14:17
Graceful shutdown of virtual machines / domains when shutting down libvirtd
When libvirtd is stopped, all virtual machines are destroyed. There is a little script that does a shutdown of all virtual machines before stopping libvirtd:
#!/usr/bin/python
import libvirt
import time
import sys
conn = libvirt.open("qemu:///system")
if conn == None:
print "Failed to open connection"
sys.exit(1)
domainIDs = conn.listDomainsID()
for id in domainIDs:
dom = conn.lookupByID(id)
if (dom == None):
continue
dom.shutdown()
# Wait up to 4 minutes
shutdownTimeOut = 240
while conn.numOfDomains() > 0 and (time.time() - startTime) < shutdownTimeOut:
time.sleep(2)
if conn.numOfDomains > 0:
sys.exit(2)
import libvirt
import time
import sys
conn = libvirt.open("qemu:///system")
if conn == None:
print "Failed to open connection"
sys.exit(1)
domainIDs = conn.listDomainsID()
for id in domainIDs:
dom = conn.lookupByID(id)
if (dom == None):
continue
dom.shutdown()
# Wait up to 4 minutes
shutdownTimeOut = 240
while conn.numOfDomains() > 0 and (time.time() - startTime) < shutdownTimeOut:
time.sleep(2)
if conn.numOfDomains > 0:
sys.exit(2)
This script has to be integrated into the stop and restart part of the /etc/init.d/libvirt-bin init script:
if running ; then
echo -n "Stopping libvirt virtual machines..."
/usr/local/bin/libvirt-shutdown-domains || true
echo " done"
fi
echo -n "Stopping libvirt virtual machines..."
/usr/local/bin/libvirt-shutdown-domains || true
echo " done"
fi