[CentOS-virt] xl stack problems on CentOS6 XEN4

Wed May 20 13:04:24 UTC 2015
Hildebrand, Nils (BIT II 9) <Nils.Hildebrand at bva.bund.de>

Hi George,

I already outlined the drbd-stuff on xen-users (see attachement). Yes - elrepo is right on mark.

"The script (/etc/xen/scripts/block-drbd) I am using is from drbd84-utils-8.9.2-1.el6.elrepo.x86_64 - and already seems to contain the "drbd or phy" case;
both in the add and the remove branch.

CentOS6 XEN4 is based on the Kernel 3.10.68-11.el6.centos.alt.x86_64 which has drbd 8.4.3 built in."

Excurse: As for SLES 11 there are two possibilities:
a) official: Buy the HAE license (quite expensive). There is a drbd-stack built into it (based on drbd 8.4)
b) inofficial: Compile your own drbd-srpm. That will contain the needed block-drbd as well, as part of the drbd-xen rpm. 

Back to my problem:

Your patch does not fit my sources:
I am currently on XEN 4.4.2-2 - your patch is for 4.5?

Can you please backport your patch to 4.4.2-2?

Kind regards


-----Ursprüngliche Nachricht-----
Von: George Dunlap [mailto:george.dunlap at eu.citrix.com] 
Gesendet: Montag, 18. Mai 2015 18:47
An: Hildebrand, Nils (BIT II 9); centos-virt at centos.org
Betreff: Re: xl stack problems on CentOS6 XEN4

[Switching to CentOS-virt, as I think that's probably actually a more
appropriate venue]

On 05/11/2015 02:52 PM, Hildebrand, Nils (BIT II 9) wrote:
> I am currently in the process of replacing my SLES11 SP3 Dom0s with CentOS6 XEN4 (at the moment: proof of concept with a test-cluster).
> I want to use the new xl-stack, instead of the old xm-stack, too.
> So far I stumbled across a number of minor glitches which could be worked around, I got DomUs with CentOS6 and CentOS 5 PV up and running with drbd-disk-backend (primary/secondary mode).
> But now I am stuck at the problem that pygrub does not seem to know about drbd-devices.

I've never used drbd myself, but poking around a little bit, it seems
that the SLES has drbd pacakages, one of which includes block scripts
for Xen (drbd-xen).

Looking at CentOS 6, I don't immediately see any drbd packages.  Are you
using the packages from elrepo, perhaps?

In particular, do you have the Xen block scripts in


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Subject: AW: AW: [Xen-users] xl stack problems on CentOS6 XEN4
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