You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
#!/usr/bin/python
|
|
# Check if all libvirt domains are prepared for TRIM/fstrim
|
|
# (for use on qcow2 images or thin provisioned volumes)
|
|
|
|
from __future__ import division, print_function
|
|
|
|
from distutils.version import LooseVersion
|
|
from lxml import objectify
|
|
import libvirt
|
|
import re
|
|
import sys
|
|
|
|
|
|
conn = libvirt.openReadOnly('qemu:///system')
|
|
if not conn:
|
|
print('Failed to open connection to the hypervisor!')
|
|
sys.exit(1)
|
|
|
|
if not hasattr(conn, "listAllDomains"):
|
|
print('connection does not have listAllDomains(), is python-libvirt too old?')
|
|
sys.exit(1)
|
|
|
|
for domain in conn.listAllDomains():
|
|
print('== {}'.format(domain.name()))
|
|
|
|
xml = domain.XMLDesc()
|
|
tree = objectify.fromstring(xml)
|
|
|
|
# machine type version should be >= 2.1 if i440fx
|
|
machine = tree.os.type.get('machine')
|
|
matches = re.match('^pc-(?:i440fx-)?([0-9.]*)', machine)
|
|
if matches:
|
|
i440_version = matches.group(1)
|
|
if LooseVersion(i440_version) < LooseVersion('2.1'):
|
|
print('machine type (version) should be at least pc-i440fx-2.1')
|
|
# Might want to check "qemu-system-x86_64 -M help" for supported
|
|
# machines.
|
|
|
|
# no disks, no need to check
|
|
if not hasattr(tree.devices, 'disk'):
|
|
print('(has no disks)')
|
|
continue
|
|
|
|
# every disk should be scsi + discard=unmap
|
|
for disk in tree.devices.disk:
|
|
if disk.get('device') != 'disk':
|
|
continue
|
|
|
|
disk_desc = disk.target.get('dev')
|
|
|
|
if disk.target.get('bus') != 'scsi':
|
|
print('{} target should be scsi'.format(disk_desc))
|
|
if disk.driver.get('discard') != 'unmap':
|
|
print('{} driver should have discard=unmap'.format(disk_desc))
|
|
|
|
# every scsi controller should be model='virtio-scsi'
|
|
for controller in tree.devices.controller:
|
|
if controller.get('type') != 'scsi':
|
|
continue
|
|
|
|
if controller.get('model') != 'virtio-scsi':
|
|
print('scsi controller should be a virtio model')
|