[dm-devel] multipath-tool udev rules require missing dmsetup features

[Hannes Reinecke]

On Wed, Jul 18, 2007 at 06:04:01PM -0700, Brian De Wolf wrote:
> Hello,
> 
> Recently I've been using the latest git versions of multipath-tools and I've
> noticed that the udev rules that are included, specifically those for kpartx,
> refer to environment variables such as DM_TABLE_STATE, DM_PART, DM_UUID, etc.
> However, the kpartx.rules file contains nothing that would bring those
> environment variables into the environment.  After some googling, I found
> http://ftp.frugalware.org/pub/frugalware/frugalware-current/source/lib/device-mapper/
> which has a patch that adds a command to dmsetup called 'export'.  I've found
> various udev scripts that use this command to pull the environment variables I
> listed before for use in udev rules and the multipath-tools kpartx.rules file
> itself works perfectly when the correct 'dmsetup export' command is imported.
> 
Errm. Oops.

Well, I'm to blame here. When creating the rules I totally forgot that we've hacked
dmsetup to provide an 'export' switch.

> What really puzzles me is that this patch was very difficult to find, but is
> essential to the 'official' multipath-tools udev rules.  Is there something that
> I'm missing that makes this all make sense?
> 
As already said, it totally makes sense when you hack up dmsetup and then forget
about the patch. Sorry about this.

Alasdair, care to incorporate it?

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare at suse.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N�rnberg
GF: Markus Rex, HRB 16746 (AG N�rnberg)
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