Re: [Xen-users] Block devices stuck in dead domain?

["Todd Deshane" <deshantm@xxxxxxxxx>]

On Tue, Jun 10, 2008 at 5:58 PM, John Hannfield <hal9020@xxxxxxxxx> wrote:

Hi Todd,

Thanks for the ideas.

> did you try xm destroy <guest VM that crashed> ?

Yes, I did that, but wasn't sure it was destroyed, as  'xm list' - it
just hangs.
But I assumed the domain was destroyed.

> If that doesn't work you may be able to use xm block-detach
> or if that doesn't work, you could try to remove the entry from xenstore
> manually.

Do you know how to remove the entry from xenstore?
I had a look in /var/run/xenstored/   but couldn't really make
sense of anything there. Is there a guide to xenstore somewhere,
or any other tips on learning about it?

xenstore uses a backend tree database (tdb).

There are xenstore-* commands used to access it (see below).

This is a pretty good reference:
http://wiki.xensource.com/xenwiki/XenStoreReference

here are the commands that are available:

xenstore-chmod    xenstore-exists   xenstore-read    
xenstore-control  xenstore-list     xenstore-rm      
xenstored         xenstore-ls       xenstore-write

I suspect that it should be something like find the domain ID and getting rid of the vbd entry.

xm list hanging is not a good sign though.

Let us know if you run into problems in your efforts.

Cheers,
Todd
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