alt Hacker NewsWhat are the typical use cases for the Guest VM to talk to Hypervisor? I see 2 use cases mentioned on the Proxmox link (https://pve.proxmox.com/wiki/Qemu-guest-agent)
1. shutdown the guest 2. freeze the guest system during backup/snapshot
Just curious about other possible use cases.
Replies
touisteur • today at 6:43 AM
Building micromvs with no network support helps with isolation and (more) kernel surface reduction.
teravor • today at 5:28 AM
some VMMs just straight up translate vsock from the guest to UDS on the host.
orielhaim • today at 8:31 AM
[dead]
I think it would be useful for backup testing. Lots of VM backup software will boot a restored VM and screenshot the login screen. That’s useless IMO because you could be screenshotting an outdated restore without realizing.
I think you could boot a network disconnected VM and communicate over vsock to assess the guest health. You’d need an agent in the VM, but I think it'd be worth it.