Wiki source code of libvirt

Version 1.1 by Sebastian Marsching on 2022/03/27 14:16

author	version	line-number	content
		1	# Graceful shutdown of virtual machines / domains when shutting down libvirtd
		2
		3	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:
		4
		5	```python
		6	#!/usr/bin/python
		7
		8	import libvirt
		9	import time
		10	import sys
		11
		12	conn = libvirt.open("qemu:///system")
		13	if conn == None:
		14	print "Failed to open connection"
		15	sys.exit(1)
		16
		17	domainIDs = conn.listDomainsID()
		18
		19	for id in domainIDs:
		20	dom = conn.lookupByID(id)
		21	if (dom == None):
		22	continue
		23	dom.shutdown()
		24
		25	# Wait up to 4 minutes
		26	shutdownTimeOut = 240
		27
		28	while conn.numOfDomains() > 0 and (time.time() - startTime) < shutdownTimeOut:
		29	time.sleep(2)
		30
		31	if conn.numOfDomains > 0:
		32	sys.exit(2)
		33	```
		34
		35	This script has to be integrated into the stop and restart part of the `/etc/init.d/libvirt-bin` init script:
		36
		37	```bash
		38	if running ; then
		39	echo -n "Stopping libvirt virtual machines..."
		40	/usr/local/bin/libvirt-shutdown-domains \|\| true
		41	echo " done"
		42	fi
		43	```

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