[dm-devel] dm-multipath: multipath setup okay,nothing in /dev/disk/by-name

Kevin Lyons klyons at novell.com
Mon Feb 13 16:54:56 UTC 2006


>>> On Mon, Feb 13, 2006 at  8:14 am, in message
<37637.194.39.131.39.1139847251.squirrel at www.hcsd.de>, au at hcsd.de
wrote: 
> Hi,
> 
>> Please mention the distrib you report for.
>> It'll help get the right people get involved.
>> This area is heavily distrib (and distrib version) dependent.
> 
> SLES 9 SP2 (2.6.5-7.191-smp)
> multipath-tools-0.4.5-0.11
> 

On SLES, the symlinks are created by the udev system.  The symlinks are
created by a rule in the /etc/udev/udev.rules file similar to the
following:

KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", NAME="%k"
SYMLINK="disk/by-name/%c"

You will probably want to make sure that you have udev installed and
running, and maybe test out that /sbin/devmap_name command to make sure
it works (%M it the major number for the dm device and %m is the minor
number)

Note that there should also be devices in the /dev/mapper directory
with the FC WWN name, iSCSI equivalent, or whatever you have specified
for the alias parameter in multipath.conf.

HTH

Kevin

> Thanks,
> 
> Stephan
> 
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