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Re: [Xen-API] device disappeared from xenstore


Thanks Jon


So I decided to go back and run the XCP 1.5 installation CD and make sure things were still working for me with that.  I found that I couldn't install a VM from my NFS share onto XCP 1.5 either.  However I was able to install and launch a VM using the debian multiarch cd if I physically put it into the kronos pc.


Given this new information I decided to reinstall kronos and focus on installing from CD.


The problem I have now is "xe cd-list" isn't detecting my cd drive.  I can mount the drive manually and get to it just fine but no matter what I do the "xe cd-list" command returns nothing.


A couple of days ago I was having a similar issue with templates where "xe template-list" never returned anything and I figured out how to regenerate the templates.  Could there be something similar with the cd drive?



On May 2, 2012 at 5:49 AM Jonathan Ludlam <Jonathan.Ludlam@xxxxxxxxxxxxx> wrote:

No, that should be fine - I run the 64 bit version on my laptop, and it seems to work nicely. The 32 bit version is more thoroughly tested, that's all. You should certainly be able to start vms :-)

On 1 May 2012, at 22:22, David Hout wrote:

Perhaps I should have asked this earlier but ...


I am trying to install kronos on a 64-bit debian installation on an amd64 box.  Should I be starting with the 32 bit debian iso instead?  Does that matter?




On May 1, 2012 at 1:13 PM Jonathan Ludlam < Jonathan.Ludlam@xxxxxxxxxxxxx> wrote:

Those alarming 'http_critical' messages are all benign. Unfortunately there's nothing to indicate the cause of your problems in that log. Anything in /var/log/syslog?

On 1 May 2012, at 17:46, David Hout wrote:



I see a lot of "[http_critical] Premature termination of connection!" messages.  Do you know if those are normal or perhaps that is a clue?


I attached a log snippet in case you are curious.







On May 1, 2012 at 10:41 AM Jonathan Ludlam < Jonathan.Ludlam@xxxxxxxxxxxxx> wrote:

Hmm. Have a look through /var/log/xcp-xapi.log and see if there's anything interesting in there?

On 1 May 2012, at 14:24, David Hout wrote:

Thanks Jon - I ran that and xend is not running



On May 1, 2012 at 8:50 AM Jonathan Ludlam < Jonathan.Ludlam@xxxxxxxxxxxxx> wrote:

Hi Dave,
Have you disabled xend? Run:
ps auxw | grep xend
and see if you get anything. 

On 1 May 2012, at 13:44, David Hout wrote:



I'm getting closer with my Kronos on Debian configuration.


I'm issuing a series of xe commands to launch a vm and it's failing with a "device disappeared from xenstore" error.  Can anybody provide guidance?






Here is the sequence of CLI commands I'm running followed by the error message:


TEMPLATE=`xe template-list name-label=âDebian Squeeze 6.0 (32-bit)â --minimal
VM=`xe vm-install template=$TEMPLATE new-name-label=debian`
NETWORK=`xe network-list bridge=xenbr0 --minimal`
VIF=`xe vif-create vm-uuid=$VM network-uuid=$NETWORK device=0`
xe vm-param-set uuid=$VM other-config:install-repository=http://ftp.uk.debian.org/debian
xe vm-memory-limits-set static-min=256MiB static-max=256MiB dynamic-min=256MiB dynamic-max=256MiB vm=$VM
xe vm-start uuid=$VM

This runs for a few seconds and comes back with an error:
The server failed to handle your request, due to an internal error.  The given message may give details useful for debugging the problem.
message:  the device disappeared from xenstore (frontend (domid=1 | kind=vbd | debid=51712); backend (domid=0 | kind=vbd | devid=51712))





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