Re: [Xen-users] Fwd: DomU freeze

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2014-02-20 at 12:03 -0700, Shane Johnson wrote:
> I apparently forgot to forward this on to the list - Sorry about that.
[...]

> Sorry for the vagueness.  I was trying to keep  things short and sweet
> but I guess I failed.  I'll do better next time.  

No worries.

> The Guest domains storage was on dedicated logical volumes.  These I
> would snapshot and image for a backup.   When the Dom0 crashed, I lost
> the original volumes and restored them from the images to new volumes
> that are currently on a external HD for portability for trying to get
> this bugger up or worst case resort to trying to recover the files
> using some sort of forensic process.  Unfortunately, I lost the
> original host OS and all the configuration files.  The guests where
> originally created on either this machine that crashed or my desktop
> and migrated via sneaker net to the crashed host.
> 
> 
> Yes the machine I am having a problem with is a HVM guest running
> Windows 2000 that's sole purpose was a file server.
> 
> 
> The 100% CPU usage was for the DomU in xl top.

Are you sure you were using xl before? The default in Wheezy was xend/xm
and the version of xl in Xen 4.1 (in Wheezy) is a bit tech preview.

From your screenshot it looks like the BIOS trying to read from the
CDROM.

You have disks named "xvd?" and xen_platform_pci=0, which I think it a
bit unusual, I'm not sure what the result would be. Can you try naming
your disks "hd?" instead.

> I don't know which version was on the old machine for sure, but I
> imagine it wasn't too far off from the wheezy test machine ( The host
> OS was updated every Friday.) and it is 0.10.2 (This is
> from /usr/lib/xen-4.1/bin/qemu-dm --help)

That's the qemu version not the Xen version.

> xenctx says it can't trace dom0

You need to give it a domid as a parameter.

> I am including the log files xl output and screenshots in an
> attachment.

Thanks. I took a look and nothing mega weird jumped out -- just the few
queries above.

Ian.



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