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Re: Devstack +XCP/XenServer Kernel Panic


6.0.0 will work fine.  6.0.2 will be back in the next few hours, too.  (It was withdrawn because of a severe bug in the handling of fragmented IPv6 packets inside Windows VMs.  That's been fixed now.)

A completely vanilla install would be fine (preferable, even).  Then pick one of the guides that John referenced earlier, and you should be good to go.  The only thing to do at install time is to make sure you select "ext" local storage rather than LVHD.  It might also be known as "XenDesktop-optimized" or "Intellicache" depending on where you're looking.  We realized the other day that we forgot to document that step and I don't know if John's done it yet.



From: openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx [mailto:openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx] On Behalf Of Kieran Evans
Sent: Thursday, March 22, 2012 2:49 AM
To: openstack@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Openstack] Devstack +XCP/XenServer Kernel Panic

In hindsight, that makes sense (though I swear I disabled root-squashing). I've been having other issues now, so quick question;

Most guides referer/specify XenServer 6.0.2, should 6.0 work (due to 6.0.2 being temporarily unavailable?).

I'm going to try now with XenServer 6.0 and build remotely.

Another quick question:

Should this all work on a completely vanilla install of XenServer or XCP or is there any prep-work not mentioned anywhere, or any steps a complete Xen newb may miss?


On 21 Mar 2012, at 20:11, Ewan Mellor wrote:

I've never seen that kernel panic before.  If you're building on an NFS share though, that often screws up the permissions.  You could have root-squashing turned on, and then every file that's supposed to be owned by root is owned by an unprivileged user instead.  It wouldn't surprise me that this freaks out the init process.

I'd try building somewhere else and see if that helps.  Or see whether you've got root-squashing or some other permission-modifying option turned on.



From: openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx<mailto:openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx> [mailto:openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx<mailto:citrix.com@xxxxxxxxxxxxxxxxxxx>] On Behalf Of Kieran Evans
Sent: Saturday, March 17, 2012 9:38 AM
To: openstack@xxxxxxxxxxxxxxxxxxx<mailto:openstack@xxxxxxxxxxxxxxxxxxx>
Subject: [Openstack] Devstack +XCP/XenServer Kernel Panic

Hi all,

I'm not sure if this is the right place for this (and if not, can anyone point out where).

I've used the devstack scripts to try to set up Openstack on both XenServer 6.0 and XCP 1.5 using the following guides:


Wether on XenServer or XCP, I always seem to hit the same issue. When the ALLINONE VM is fired up, it shuts down after a few seconds with a kernel panic ( as seen here: http://imgur.com/i85fC). The same issue occurs with the domU_multi scripts too.

A note, in case it may affect the build scripts somehow, For external storage, rather than using a different machine, or external USB, I've mounted /root to an NFS share before running prepare_dom0.sh.

We've currently got a Diablo Openstack installation up and running using StackOps, but I'm currently trying out essex on some spare machines (both to get to know it, and an attempt to see if running with Xen is of any advantage to us).