Subject: Re: [vserver] 32bit Guests on 64bit Host
From: Herbert Poetzl <herbert@13thfloor.at>
Date: Mon, 21 Dec 2009 06:21:21 +0100

On Mon, Dec 21, 2009 at 05:37:34AM +0100, Ghislain wrote:
> Le 20/12/2009 14:56, Herbert Poetzl a écrit :
> > On Sun, Dec 20, 2009 at 01:25:04PM +0100, Oliver Welter wrote:
> > Hi All,

> > anybody can tell me, if there are drawbacks/issues, running 32bit
> > systems on top of a 64bit host?

> > > there should be none as long as the personality is set
> > > properly and you have the 32bit compatibility enabled

> note that we use mixed guest host and we have no major issue 
> apart from an heavely used web server that see quite a lot of 
> segfault in php. 

anything in dmesg (host) or syslog (guest)?

> Personality is set to PER_LINUX32 but that still bring issues. 

what kind of issues?

> However this this the only case of issues i have (it is on
> 2.6.31.3-vs2.3.0.36.18 , util-vserver: 0.30.216-pre2849). 

so older/newer versions do not show that?

> The very same web cluster has one system with 64bit guest 
> that do not segfault at all.

> Setting the personality on the 32bit system removed a lot of
> them but i still get 4 per week per server at least.

system means guest, and server means host?

TIA,
Herbert

> -- 
> 
> Cordialement,
> Ghislain