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

[Stanislav German-Evtushenko]

On Wed, Nov 19, 2014 at 11:25 AM, Dietmar Maurer <dietmar at proxmox.com>
wrote:

> > Swap space is inititialized on startup using 'swapon', and AFAIK there
> is no
> > complex format which gets damaged if data is not synced? At least I never
> > observed problems with swap after server crash
> >
> > I can think about two cases at least when this is critical:
> > 1) Live migration - if swap is corrupted live migration will fail.
>
> AFAIK kvm live migration issues a disk flush, so that should not be a
> problem?
>

Out if sync blogs do not appear during migration, they appear under normal
work load. And then we get corruption of data in 'memory' on migration.

Stanislav
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