Re: [Xen-users] BUG: unable to handle kernel paging request Xen 4.4.2

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

Brandon,

As well as Xen4CentOS (http://wiki.xenproject.org/wiki/Xen4CentOS and
http://wiki.centos.org/HowTos/Xen/Xen4QuickStart) there are various
consultants offering paid support of various kinds listed at
http://www.xenproject.org/directory/directory/consulting.html

Of those I know that http://xen.crc.id.au/ does CentOS (and related
distros) packages and offers support (I have no particular affiliation
with the xen.crc.id.au guys, and I've not used their stuff myself).

Ian.

On Wed, 2015-07-01 at 09:08 -0700, Brandon wrote:
> Hi Sarah and List,
> 
> Thanks so much for the reply and info.
> 
> I am running 3.10.68-11.el6.centos.alt.x86_64 most everywhere so I will
> upgrade asap.
> 
> 
> -----Original Message-----
> From: Sarah Newman [mailto:srn@xxxxxxxxx] 
> Sent: Wednesday, July 01, 2015 8:55 AM
> To: Brandon; xen-users@xxxxxxxxxxxxx
> Subject: Re: [Xen-users] BUG: unable to handle kernel paging request Xen
> 4.4.2
> 
> On 07/01/2015 07:56 AM, Brandon wrote:
> > Hi Xen User List,
> > 
> >  
> > 
> > I have a recurring bug shown below which is causing me serious problems.
> It's so serious my company is considering abandoning XEN for KVM but, we
> > have many XEN servers and VMs so this is not an easy decision.   My
> CentOS6 Xen servers are built using SolusVM install script and run Windows
> 2008 R2
> > / 2012 R1 guests.   They run great except for this recurring bug.   
> > 
> >  
> > 
> > The servers are Xen 4.4.2 (and some slightly earlier versions) using XL
> Toolstack and we've been encountering this showstopper bug for the last 6
> > months or so randomly on different servers.   When this BUG is encountered
> my VM guests will no longer be able to boot if they are restarted.   I am
> > forced to reboot the entire server interrupting all VM guests.   I've had
> about 6-7 encounters with this bug.   One time it hard crashed the server
> > while I was migrating a VM to another server.   The other times I have
> made it to the weekend so I can do a graceful reboot.
> > 
> >  
> > 
> > Does anyone know of this issue?
> > 
> >  
> > 
> > Is there any paid Xen support that can debug and solve this?   I'm using
> CentOS6 so this is not a RHEL box under support contract but, we'd probably
> > be willing to pay in a per incident type scenario if the cost was
> reasonable.
> > 
> >  
> > 
> > Any advice is much appreciated.
> > 
> 
> Looks like it might be
> http://xen-devel.narkive.com/4ANUbmbs/rfh-kernel-oops-in-xen-netbk-rx-action
> -xenvif-gop-skb
> 
> According to Wei Liu the bug is gone in version 3.12 or later, though I have
> not reviewed the code myself. Xen4CentOS released kernel-3.18.12-11 2 days
> ago.
> 
> Regards, Sarah
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users



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