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14.13.8. Changing the Memory Allocation for the Domain

The virsh setmaxmem domain size --config --live --current allows the setting of the maximum memory allocation for a guest virtual machine as shown:
virsh setmaxmem rhel6 1024 --current
The size that can be given for the maximum memory is a scaled integer that by default is expressed in kibibytes, unless a supported suffix is provided. The following options can be used with this command:
  • --config - takes affect next boot
  • --live - controls the memory of the running domain, providing the hypervisor supports this action as not all hypervisors allow live changes of the maximum memory limit.
  • --current - controls the memory on the current domain