Xen users - Apr 2006 - XEN newby getting " Error: Device 770 (vbd) could not be connected. Backend device not found."

Hi all

I installed XEN 3.0 on Debian following this
tutorial<http://www.howtoforge.com/book/print/1169>.
Everything went fine regarding basic functionality. Next I tried use LVM for
the virtual machine disk storage. That unfortunately didn''t work. When
I try
to start a vm I get:

Error: Device 770 (vbd) could not be connected. Backend device not found.

Anybody an idea what to do ? I saw in the archive that I am not the first to
get this error message, but I din''t find an answer how to solve this
problem.

regards
--
Roberto Saccon


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Look at /var/log/xend.log, it will give you more information on what could
be causing that error.

On 4/20/06, Roberto Saccon <rsaccon@gmail.com>
wrote:
>
> Hi all
>
> I installed XEN 3.0 on Debian following this
tutorial<http://www.howtoforge.com/book/print/1169>.
> Everything went fine regarding basic functionality. Next I tried use LVM
for
> the virtual machine disk storage. That unfortunately didn''t work.
When I try
> to start a vm I get:
>
> Error: Device 770 (vbd) could not be connected. Backend device not found.
>
> Anybody an idea what to do ? I saw in the archive that I am not the first
> to get this error message, but I din''t find an answer how to solve
this
> problem.
>
> regards
> --
> Roberto Saccon
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>

--
regards,

Anand Gupta


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Hello Roberto,

I have got all my domU partitions on LVM''s (on top of RAID''s)
running
fine with debian (etch + sarge). The domU''s however dont know that
theire partitions are running on LVM, they are exported as sdaX:

In xen domain config files:
---
disk = [ ''phy:vg1/mars-root,sda1,w'',
''phy:vg0/mars-swap,sda2,w'' ]
---

fstab of the domU:
---
/dev/sda1       /               ext3    defaults,errors=remount-ro 0       1
/dev/sda2       none            swap    sw              0       0
---


You wrote at Mittwoch, 19. April 2006 23:50:

RS> Hi all

RS> I installed XEN 3.0 on Debian following this
RS> tutorial<http://www.howtoforge.com/book/print/1169>.
RS> Everything went fine regarding basic functionality. Next I tried use LVM
for
RS> the virtual machine disk storage. That unfortunately didn''t
work. When I try
RS> to start a vm I get:

RS> Error: Device 770 (vbd) could not be connected. Backend device not found.

RS> Anybody an idea what to do ? I saw in the archive that I am not the first
to
RS> get this error message, but I din''t find an answer how to solve
this
RS> problem.

RS> regards
RS> --
RS> Roberto Saccon


-- 
Seneca


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Xen-users mailing list
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thanks for all the replies, I followed the advices and now it works !

--
Roberto Saccon


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