I'll read the code this afternoon, thanks !
- Mail original -
De: Dietmar Maurer diet...@proxmox.com
À: Alexandre DERUMIER aderum...@odiso.com
Cc: pve-devel@pve.proxmox.com
Envoyé: Mardi 4 Septembre 2012 14:22:12
Objet: RE: [pve-devel] create snapshots
I just uploaded a patch - I
I just looked at savevm, and that is relatively simple code:
qemu-kvm/savevm.c: do_savevm()
1.)check if all disk support snapshots (call bdrv_can_snapshot())
2.)vm_stop(RUN_STATE_SAVE_VM)
3.)Delete old snapshots of the same name
4.)save the VM state
5.)create the
But I am quite unsure with nexenta - how can we make sure that the nexenta
server
received all data before we do a snapshot?
I think it the same than other, if vm_stop is call,
bdrv_drain_all,bdrv_flush_all will use libiscsi.
if we don't save vm_state, we need to freeze the filesystem.
I wonder it is would be safe to call an external script to create the
snapshot
there?
Or is there still some data in the qemu block driver cache, or the host
cache?
yes, I think taking snapshot don't flush datas.
rbd devs said me that we need to freeze the filesystem with qemu-ga if we
