[pve-devel] qemu 4.4 : rbd : snapshot memory, savevm is hanging

[Dietmar Maurer]

> On November 8, 2015 at 5:06 AM Alexandre DERUMIER <aderumier at odiso.com> wrote:
> 
> 
> Some news,
> 
> first I'm seeing this warning when debugging
> 
> WARNING: Image format was not specified for
> 'rbd:pooltest/vm-162-state-snap10:mon_host=10.3.94.31:id=admin:auth_supported=cephx:keyring=/etc/pve/priv/ceph/ceph1.keyring'
> and probing guessed raw.
>          Automatically detecting the format is dangerous for raw images, write
> operations on block 0 will be restricted.
>          Specify the 'raw' format explicitly to remove the restrictions.
> 
> it's since qemu 2.3, we need to specify format=raw, we are already doing it
> for -drive , I'm not sure with vmstate open.
> 

Oh, I though the PVE::Storage already fixed that ...

> then, we the snapshot is hanging:
> 
> savevm-async: savevm inerate pending size 11948032 ret 129
> ...
> savevm-async: savevm inerate pending size 389120 ret 95

sigh, we should really correct those spelling errors.

> savevm-async: done iterating
> -> block here

Do you use iothreads?