KVM & backup

[SamTzu]

Hi. Couple of questions about KVM and backups.
We have a couple of "servers" (workstations with some really big HD's) that we use for "server parking" (ie. where old VM's go to die.)
There is no need to start those VM's but we don't really want to delete them yet because we might still need to use them later so we put them to sleep and migrate them to better hardware if they are still needed.

One of those proxmox servers say... when trying to backup of KVM

INFO: starting kvm to execute backup task
Could not access KVM kernel module: No such file or directory
failed to initialize KVM: No such file or directory

Why does Proxmox want to start the VM to make a backup of it? That makes no sense.


One of those proxmox servers say... when trying to backup of KVM

"Backup of VM 701 failed - No accelerator found!"

Why can't Proxmox backup work without accelerator?

 

[tom]

Hi. Couple of questions about KVM and backups.
We have a couple of "servers" (workstations with some really big HD's) that we use for "server parking" (ie. where old VM's go to die.)
There is no need to start those VM's but we don't really want to delete them yet because we might still need to use them later so we put them to sleep and migrate them to better hardware if they are still needed.

One of those proxmox servers say... when trying to backup of KVM

Why does Proxmox want to start the VM to make a backup of it? That makes no sense.


One of those proxmox servers say... when trying to backup of KVM

Why can't Proxmox backup work without accelerator?

the backup is integrated in the qemu/kvm code, therefore KVM is needed for doing backups.

 

[SamTzu]

Thx, Tom.
I suppose I should ask these questions in another forum.
It looks like the KVM backup is not smartest backup in the world.

 

[mo_]

you could just manually copy the .raw/qcow2 + config to those workstations

 

[tom]

Thx, Tom.
I suppose I should ask these questions in another forum.
It looks like the KVM backup is not smartest backup in the world.

do you know another snapshot backup and restore solution which is totally independent on the used OS inside the VM and on the storage technology used for virtual disks?
- local, nfs, ceph, sheepdog, iscsi, zfs, lvm, glusterFS ....

I would call this very "smart"!

 

[SamTzu]

There is such a thing as too smart. That's when it gets really dumb.