14.13.7. Configuring Memory Allocation

[--domain] <string> domain name, id or uuid

[--size] <number> new memory size, as scaled integer (default KiB)

Valid memory units include:

Note that all values will be rounded up to the nearest kibibyte by libvirt, and may be further rounded to the granularity supported by the hypervisor. Some hypervisors also enforce a minimum, such as 4000KiB (or 4000 x 2¹⁰ or 4,096,000 bytes). The units for this value are determined by the optional attribute memory unit, which defaults to the kibibytes (KiB) as a unit of measure where the value given is multiplied by 2¹⁰ or blocks of 1024 bytes.

--config takes affect next boot

--live controls the memory of the running domain

--current controls the memory on the current domain