[dm-devel] Re: User specific priorities on for iscsi paths doesn't seem to work

[Mike Snitzer]

On Fri, Aug 07 2009 at  4:25pm -0400,
Akshay Lal <alal at cleversafe.com> wrote:

> I'm having a few issues with path priorities. It seems that the choice  
> of path to use during I/O is independent of the user defined priorities  
> for each path.
>
> I am setting the priorities by executing writing a script that is used  
> by prio_callout. This seems to work when I execute multipath -ll since  
> all the specified priorities show up correctly. (the  
> path_grouping_policy being used is  failover)

...

> Is there something I'm doing wrong? I would like to be able to define  
> the priorities per device, and ensure that data only traverses on the  
> lower priority path when
> a) a failure to the first path (path with a higher priority) occures
> b) no other path with a higher priority exists

Do things behave as you'd like if you change path_grouping_policy to
'group_by_prio'?

Mike