Most of them are outdated, but provide historical design context.
They are not user documentation and should not be treated as such.
Documentation is available here.
Hot Plug Disk
Summary
Allow hot addition and removal of virtio-blk and virtio-scsi disks to a running guest.
Owner
- Michael Kublin
Current status
Supported since oVirt 3.1. VirtIO-SCSI support added in oVirt 3.3.
Detailed Description
The following feature will allow to hot plug/unplug disks to a running VM. Note that this feature will require the guest’s cooperation, so it will be restricted to operating systems that support it, e.g.m RHEL 5 and above, Windows Server 2003 and above, etc.
User Experience
The following UI mockup contain guidelines for VMs->Disks sub-tab:
User work-flows
New actions will allow the user to plug or unplug a disk to/from a running VM in 3.1 clusters and above.
HotPlug will be allowed only on:
- The guest OS supports the operation
- VirtIO/VirtIO-SCSI disk
- Disk should be unplugged
- VM should be up
HotUnPlug will be allowed in the following cases:
- The guest OS supports the operation
- VirtIO/VirtIO-SCSI disk
- Disk should be plugged
- VM should be up
In order to perform this operation new verbs will be added to the VDSM side - hotplugDisk and hotunplugDisk (see VDSM’s schema for the full details).
New vdsm errors will be added - HotplugDiskFailed (45) and HotunplugDiskFailed (46).
Note that unplugged disks will not be passed to the createVM operation.