[dm-devel] multipath: partitions are not created on IBM 1746 (SAS connection to DS3512)

[Peter Volkov]

Thank you Christophe and Malahal.

В Срд, 09/02/2011 в 11:22 +0100, Christophe Varoqui пишет:
> On mer., 2011-02-09 at 13:08 +0300, Peter Volkov wrote:
> > root at btv1:~# cat /etc/multipath.conf 
> > defaults {
> > 	path_checker	rdac
> > }
> > 
> the 'path_checker' param does not set the hwhandler.
> the keyword for that is 'hardware_handler'.

Is this an error in man multipath.conf then (it mentions rdac in
path_checker section)?

Anyway I've updated multipath-tools on ubuntu and this fixed initial
issue, but now I experience different problem with multipath. For
unknown reasons multipath does not automagically create partitions on
Gentoo system, although everything works if I run `kpartx -a /dev/dm-0`
manually. Could you help me to investigate this issue?

I've upgraded multipath tools to the current git with no Gentoo patches
applied, udev to 164, and lvm2 to 2.02.84 but still multipath even
without configuration file (defaults) creates only following devices:

 # ls -l /dev/mapper/360080e50001baa46000025834d501798* 
lrwxrwxrwx 1 root root 7 Feb 12 17:01 /dev/mapper/360080e50001baa46000025834d501798 -> ../dm-0
 # ls -l /dev/dm*                                      
brw-rw---- 1 root disk 253, 0 Feb 12 17:01 /dev/dm-0

and after

 # kpartx -a /dev/dm-0

partition appear:

 # ls -l /dev/mapper/360080e50001baa46000025834d501798*
lrwxrwxrwx 1 root root 7 Feb 12 17:01 /dev/mapper/360080e50001baa46000025834d501798 -> ../dm-0
lrwxrwxrwx 1 root root 7 Feb 12 17:03 /dev/mapper/360080e50001baa46000025834d501798p1 -> ../dm-1

This can be problem in my kernel configuration but I've compared with
ubuntu config and failed to find any evident differences. Could you
suggest how to debug this?


Have a nice weekend,
-- 
Peter.