4.3.12. Determine the max Vcpus of the Domain

⁠4.3.12. Determine the max Vcpus of the Domain

The maxVcpus method returns the maximum number of virtual CPUs allocated to the domain, This same information can be retrieved via info method.

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Example 4.18. Determine the max Vcpus of the Domain

# Example-54.py
#!/usr/bin/env python3
import sys
import libvirt
from xml.dom import minidom

domName = 'CentOS7'

conn = None
try:
    conn = libvirt.open("qemu:///system")
except libvirt.libvirtError as e:
    print(repr(e), file=sys.stderr)
    exit(1)

dom = None
try:
    dom = conn.lookupByName(domName)
except libvirt.libvirtError as e:
    print(repr(e), file=sys.stderr)
    exit(1)

cpus = dom.maxVcpus()
if cpus != -1:
    print('The max Vcpus for domain is ' + str(cpus))
else:
    print('There was an error.')

conn.close()
exit(0)