Добавление памяти (ACPI)¶

На хосте¶

qmp-shell -H /run/qemu/qemu5521.control.sock

(QEMU) info memory-devices
(QEMU) object_add memory-backend-ram,id=mem1,size=2G
(QEMU) device_add pc-dimm,id=dimm1,memdev=mem1
(QEMU) info memory-devices
Memory device [dimm]: "dimm1" 
  addr: 0x2c0000000
  slot: 0
  node: 0
  size: 2147483648
  memdev: /objects/mem1
  hotplugged: true
  hotpluggable: true

На госте¶

for NAME in $(grep -l offline /sys/devices/system/memory/memory*/state); do echo online > $NAME; done

Полезные ссылки¶

https://github.com/qemu/qemu/blob/master/docs/memory-hotplug.txt
https://medium.com/@juergen_thomann/memory-hotplug-with-qemu-kvm-and-libvirt-558f1c635972#.eenrv1jdb