Re: [Xen-users] Xen 3.2.1-2 on Debian Lenny 2.6.26 2.6.26-24

[Peter Viskup <skupko.sk@xxxxxxxxx>]

Hi Maciej,
you have to reinstall dom0 when you would like to switch to amd64. You 
can leave your domU's as they are or you can reinstall them too...as you 
wish. It is up to you. 64bit dom0 can run 32bit domU without any issue.
Did you try to set DEBUG log-level - any errors in the log? Any error 
message on dom0 or domU will help.
We were experiencing issue with older Debian's 2.6.26 xen kernel when 
domU's were freezing from-time-to-time. Now we are running Debian's xen 
kernel 2.6.18 in domU and this solved the issue with freezing domU's. 
You can probably try this - install 2.6.18 on dom0 and/or domU.
In our case the domU's were freezing only when running with more than 
one vcpu - you can probably try to configure domU's with only one vcpu.
For any other investigation/proposal are needed some error messages...

--
Peter


On 07/12/2010 03:17 PM, Maciej Liżewski wrote:
> Hi,
>
> Ok. I have no other solution. How to switch to 64bit kernel?
> Assume I have configuration like descibed earlier. Do I have to reinstal
> everything from scratch? Or just install 64bit packages? What packages? How
> about domU's? do I have to reinstall something there also?
>
> Does anyone have working configuration like this? 64bit dom0 and 32bit
> domU's? is it stable witch Lenny packages?
>
> We have other servers running Debian, so changing distro to CentOS is rather
> last thing I would think of, but maybe this would be better solution than
> messing with Lenny?
> One thing I am afraid of with CentOS I will have problems with installing
> required new versions of Apache, Mysql, php as fastcgi... as everything will
> have to compile from sources.
>
>
> Please help me with selecting proper solution. In fact - everything will be
> better that current unstable system...
>
> TIA
>
> --
> Maciej
>
>
> -----Original Message-----
> From: Matej Zary [mailto:matej.zary@xxxxxxxxx]
> Sent: Friday, July 09, 2010 4:23 PM
> To: Maciej Liżewski; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Xen 3.2.1-2 on Debian Lenny 2.6.26 2.6.26-24
>
> Hello,
>
> amd64 in Debian case means it's for 64bit x86 CPUs (x86-64) - either AMD or
> Intel. :)
>
>
> Regards
>
> Matej
>
>
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Maciej Liżewski
> Sent: Friday, July 09, 2010 3:58 PM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Xen 3.2.1-2 on Debian Lenny 2.6.26 2.6.26-24
>
> Hi,
>
>
>
> Thanks for answer. I'll try your suggestions about changes in configuration.
>
>
>
> Don't know if amd64 kernel will run stable, as this is dual Intel Xeon
> machine.
>
>
>
> My configuration is very simple, example of one machine: dom0 is just Xen
> host with network configured as custom script using two bridges (eth0,
> eth1). Root partition has 10GB, rest is managed by LVM for DomU's. It has
> ~700MB ram. That's all, there are no other services on Dom0
>
>
>
> DomU's are created to provide services:
>
> DomU 1: MySQL 5.1 (from lenny-backports), ext3 (former I have tried XFS here
> with same effect), 3GB ram
>
> DomU 2: Web (Apache2, php5 as fastcgi, vsftpd, dkim-filter for emails sent
> from scripts), XFS, 2GB ram
>
> DomU 3: Reverse proxy (Nginx, ftp_proxy, awstats as fastcgi), XFS, 1.2GB ram
>
>
>
> Every domain (dom0, domU's) have postfix as MTA
>
>
>
> Everything installed via apt-get, no compilation, just default apt
> repository + lenny-backports in some cases. 3rd DomU (reverse proxy) is most
> stable. It haven't crash at all. Others crash at least one of them in week.
>
> If you need any other information - just let me know.
>
>
>
> --
>
> Maciek
>
>
>
> From
>
>
>
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> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>    

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