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

Dietmar Maurer dietmar at proxmox.com
Fri May 29 14:51:27 CEST 2015


> > Come to think of it, you could probably say inconsistent garbage is
> > also just garbage.
> >
> > Does it _really_ fix the problems if you use a different cache option
> > in qemu? I'm just asking because it seems weird that a program (or
> > OS for that matter) is _relying_ on bad data to be, well, not so bad.
> 
> The issue is reproducible only with cache=none and cache=directsync
> and it is never reproducible with other cache modes.

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)?



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