register new block device script

register new block device script

[Michael Mey]

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Hi all,

I'd like to develop a new script for block-devices. 
Where do I have to register it?

It's for DRBD block devices. It's called 'block-drbd' .
I tried the following steps:

1) copy it in /etc/xen/scripts
2) register it in /etc/xen/xend-config.sxp :
    # Setup script for drbd block devices
    (block-drbd block-drbd)
3) use it in a domU config file:
    ...
    disk = [ 'drbd:drbd0,hda1,w' ]
    ...

So far, it doesn't work.
Can anyone give me a hint?
Thx,

Mike

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Re: register new block device script

[Mark Williamson]

What version of Xen is this?  For Xen 2.0, that looks correct.  Xen 3.0 does 
things differently and I don't know if it needs anything else (like, possibly 
extra hotplug rules???).

Just a silly question: did you chmod +x the script?

Cheers,
Mark

On Monday 24 October 2005 15:38, Michael Mey wrote:
> Hi all,
>
> I'd like to develop a new script for block-devices.
> Where do I have to register it?
>
> It's for DRBD block devices. It's called 'block-drbd' .
> I tried the following steps:
>
> 1) copy it in /etc/xen/scripts
> 2) register it in /etc/xen/xend-config.sxp :
>     # Setup script for drbd block devices
>     (block-drbd block-drbd)
> 3) use it in a domU config file:
>     ...
>     disk = [ 'drbd:drbd0,hda1,w' ]
>     ...
>
> So far, it doesn't work.
> Can anyone give me a hint?
> Thx,
>
> Mike

Re: register new block device script

[Michael Mey]

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Oh sorry, I forgot to mention. Yes, it's for Xen 2.0.7.

Hm, strange. I rechecked everything including execution permissions for the 
script. Now it works fine. Thought it wasn't called, but I guess there was a 
problem with drbd.

Thanks, regards

Mike


On Monday 24 October 2005 16:43, Mark Williamson wrote:
> What version of Xen is this?  For Xen 2.0, that looks correct.  Xen 3.0
> does things differently and I don't know if it needs anything else (like,
> possibly extra hotplug rules???).
>
> Just a silly question: did you chmod +x the script?
>
> Cheers,
> Mark
>
> On Monday 24 October 2005 15:38, Michael Mey wrote:
> > Hi all,
> >
> > I'd like to develop a new script for block-devices.
> > Where do I have to register it?
> >
> > It's for DRBD block devices. It's called 'block-drbd' .
> > I tried the following steps:
> >
> > 1) copy it in /etc/xen/scripts
> > 2) register it in /etc/xen/xend-config.sxp :
> >     # Setup script for drbd block devices
> >     (block-drbd block-drbd)
> > 3) use it in a domU config file:
> >     ...
> >     disk = [ 'drbd:drbd0,hda1,w' ]
> >     ...
> >
> > So far, it doesn't work.
> > Can anyone give me a hint?
> > Thx,
> >
> > Mike
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

-- 
----------------------------------------------------------------------------------------
Michael Mey                                  
Thinking Objects Software GmbH    |   mailto: michael.mey@to.com 
Lilienthalstrasse 2/1                         |   phone: +49 711 88770-147
70825 Stuttgart-Korntal, Germany  |   fax: +49 711 88770-449
----------------------------------------------------------------------------------------

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Re: register new block device script

[Ewan Mellor]

On Mon, Oct 24, 2005 at 04:38:39PM +0200, Michael Mey wrote:

> Hi all,
> 
> I'd like to develop a new script for block-devices. 
> Where do I have to register it?
> 
> It's for DRBD block devices. It's called 'block-drbd' .
> I tried the following steps:
> 
> 1) copy it in /etc/xen/scripts
> 2) register it in /etc/xen/xend-config.sxp :
>     # Setup script for drbd block devices
>     (block-drbd block-drbd)

There's no need to do this.  This is out-of-date stuff from the pre-hotplug
days.  I removed these examples last week, in fact, so you may want to update
your config file.

These scripts are now called by the hotplug/udev infrastructure.  There should
be no need to register the script as such -- xen-backend.agent should be
called by udev, and then that will call /etc/xen/scripts/block, which in turn
will call /etc/xen/scripts/block-drdb.

Have a look in your syslog files (particularly the debug level one,
e.g. /var/log/debug) and maybe add some tracing to those files, to see where
it gets stuck.

You might also want to try

PYTHONPATH=/usr/lib/python python /usr/lib/python/xen/util/diagnose.py <dom>

which at least will tell you whether the store entries for the device have
been created correctly.

Cheers,

Ewan.

Re: register new block device script

[Michael Mey]

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The hotplug/udev infrastructure support is for Xen 3.0, right? Because I 
downloaded the latest sources of Xen-stable last week.

After rechecking all of my steps, it finally works fine :)

Regards,

Mike


On Monday 24 October 2005 16:59, Ewan Mellor wrote:
> On Mon, Oct 24, 2005 at 04:38:39PM +0200, Michael Mey wrote:
> > Hi all,
> >
> > I'd like to develop a new script for block-devices.
> > Where do I have to register it?
> >
> > It's for DRBD block devices. It's called 'block-drbd' .
> > I tried the following steps:
> >
> > 1) copy it in /etc/xen/scripts
> > 2) register it in /etc/xen/xend-config.sxp :
> >     # Setup script for drbd block devices
> >     (block-drbd block-drbd)
>
> There's no need to do this.  This is out-of-date stuff from the pre-hotplug
> days.  I removed these examples last week, in fact, so you may want to
> update your config file.
>
> These scripts are now called by the hotplug/udev infrastructure.  There
> should be no need to register the script as such -- xen-backend.agent
> should be called by udev, and then that will call /etc/xen/scripts/block,
> which in turn will call /etc/xen/scripts/block-drdb.
>
> Have a look in your syslog files (particularly the debug level one,
> e.g. /var/log/debug) and maybe add some tracing to those files, to see
> where it gets stuck.
>
> You might also want to try
>
> PYTHONPATH=/usr/lib/python python /usr/lib/python/xen/util/diagnose.py
> <dom>
>
> which at least will tell you whether the store entries for the device have
> been created correctly.
>
> Cheers,
>
> Ewan.
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

-- 
----------------------------------------------------------------------------------------
Michael Mey                                  
Thinking Objects Software GmbH    |   mailto: michael.mey@to.com 
Lilienthalstrasse 2/1                         |   phone: +49 711 88770-147
70825 Stuttgart-Korntal, Germany  |   fax: +49 711 88770-449
----------------------------------------------------------------------------------------

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