[dm-devel] [PATCH] dm-mpath: always return reservation conflict
Hannes Reinecke
hare at suse.de
Thu Jul 16 14:40:34 UTC 2015
On 07/16/2015 09:54 AM, Christoph Hellwig wrote:
> 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.
>
Second that.
I would even put this in the manpage somewhere.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare at suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
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