[dm-devel] [PATCH] dm-mpath: always return reservation conflict

[Christoph Hellwig]

On Thu, Jul 16, 2015 at 05:07:03AM +0000, Christophe Varoqui wrote:
> For reference the opensvc crm does use type 5 pr, and aims for all paths
> registered. It still does not make use of the multipathd pr janitoring
> features, and uses sg_persist directly for pr status and actions.

The type doesn't matter here.  It's important to set the ALL_TG_PT bit
when registering the key.  As dm-mpath opens the underlying devices
exclusively, and doesn't give you a choice which path to send to you're
in a world of pain without that.