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

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