Re: WAPBL and "cache flush not supported by backend"

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Feb 18, 2013 at 10:47:00AM -0800, Luke Maurits wrote:
> Thanks for the clarification.  I will see if I can find out any
> details from my VPS provider about their dom0 setup so I can assess
> the risk, but I suppose I'll probably turn it off to be safe.  I'm not
> untarring pkgsrc every day so the performance hit won't make to big of
> a difference.
> 
> So, what is the ultimate cause of cache flushing not being supported?
> Is this something to do with the configuration of dom0, which could in
> principle be changed?  Or is NetBSD missing some driver support and
> there's nothing that can be done without it?

It's on the dom0 side. Linux did support it at some point in the
past (this virtual disk operation isn't NetBSD invention), but I don't
know if recent linux kernels still have it as option.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--