[pve-devel] Default cache mode for VM hard drives

[Dietmar Maurer]

> > So we still not understand the problem 100% :-/
> >
> > You mention that it only happens on some special guest OS? Did you
> > also test different drivers (virtio, ide, scsi)?
> >
> 
> 1) On any guest OS (Linux or Windows) where swap is used actively
> 2) As I remember I've seen the same issues happening for ext3
> partitions on Linux guests (where barriers are off by default) but it
> was quite long time ago becase all guest systems are on ext4 now

what hardware driver? virtio, scsi, ide ?