Re: [vserver] 32bit guests, 64bit host, CentOS 5 & 6

From: Roderick A. Anderson <>
Date: Fri 26 Apr 2013 - 18:27:03 BST
Message-ID: <>

On 04/26/2013 09:18 AM, Herbert Poetzl wrote:
> On Fri, Apr 26, 2013 at 07:54:50AM -0700, Roderick A. Anderson wrote:
>> I've seen the posts about 32bit guests on 64bit hosts but
>> I don't remember if any of the threads dealt with CentOS,
>> RHEL, etc.
>> While I'm working on the yum patch for CentOS 6.4 it would
>> be nice to get the guests moved to the new (63bit) host.
> I presume they ripped you off at the hardware store by
> keeping one bit for themselves while charging the full
> price for a 64bit system :)

Darn. I'm going back and ask! :-)

>> The issue is the guests migrating are currently build on
>> a 32bit CentOS 5 host.
> just set the personality for the guest (in the guest
> config) and everything should be fine, as long as the
> host kernel supports the 32bit API.
>> Can I build them on the 64bit host using the rsync method?
> yes, rsync just copies the files, which is fine and
> doesn't care about 64bit vs 32bit, nevertheless, you
> should set the personality correctly.
>> If so any gotchas I should watch for?
> as I said, kernel config should include the 32bit API

I'm using the dhozac-vserver repo. Looking at
I see it was. Thanks goodness for that!

> and the personality should be set correctly to linux32
> in /etc/vservers/<guest>/personality (to verify, check
> with uname -a inside the guest).

Well I'm going to embarrass myself by asking what should I see? And to
let everyone think I'm an antique collector I'll include the output.

# uname -a
Linux #1 SMP Mon Mar 17 05:32:04
EDT 2008 i686 i686 i386 GNU/Linux

I'm guessing the i686 and i386 are the giveaways.

And I don't upgrade very often. It works ... well!


> HTH,
> Herbert
>> TIA,
>> Rod
>> --
Received on Fri Apr 26 18:27:18 2013
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