9.8.2. Hot plugging memory on a virtual machine

Procedure

1. Navigate to Virtualization VirtualMachines.
2. Select the required VM to open the VirtualMachine details page.
3. On the Configuration tab, click Edit CPU|Memory.

4. Enter the required amount of memory and click Save.

   注記

   By hot plugging, you can increase the total amount of memory of a VM up to four times the default initial amount. Exceeding this limit requires a restart.

   The system applies these changes immediately. If the VM is able to be migrated, a live migration is triggered. If not, or if the changes cannot be live-updated, a RestartRequired condition is added to the VM.

   注記

   Memory hot plugging for virtual machines requires guest operating system support for the virtio-mem driver. This support depends on the driver being included and enabled within the guest operating system, not on specific upstream kernel versions.

   Supported guest operating systems:

   • RHEL 9.4 and later
   • RHEL 8.10 and later (hot-unplug is disabled by default)
   • Other Linux guests require kernel version 5.16 or later and the virtio-mem kernel module
   • Windows guests require virtio-mem driver version 100.95.104.26200 or later