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Re: [dm-devel] multipath: rdac on IBM 1746 (SAS connection to DS3512)



Peter Volkov [peter volkov gmail com] wrote:
> Thank you for detailed answer Christophe.
> 
> В Срд, 09/02/2011 в 10:49 +0100, Christophe Varoqui пишет:
> > On your ubuntu setup, multipath tools picked the default hardware
> > handler (none, ie 0) whereas on your gentoo setup the hardware handler
> > is explicitely set for use with your storage device.
> > 
> > Now 2 choices :
> > 1/ upgrade multipath-tools
> > or
> > 2/ set up your device definition in multipath.conf to override internal
> > defaults
> 
> I'll try to upgrade multipath-tools, but as for second choice it looks
> like following configuration should work:
> 
> root btv1:~# cat /etc/multipath.conf 
> defaults {
> 	path_checker	rdac
> }

Checker name is in the controller section and that default may
overwrite the above. BTW, checker name is different from
hardware handler.

> 
> blacklist {
> 	devnode "^sd[a-b]"
> }
> 
> multipaths {
> 	multipath {
> 		wwid			360080e50001baa46000025834d501798
> 		alias			vod
> 		path_checker    rdac

The above should work for path checker but path checker is different
from hardware handler.

Thanks, Malahal.


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