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Re: [dm-devel] [PATCH v2] multipath: add detect_prio option to autodetect prioitizer



On 01/12/2013 01:26 PM, Christophe Varoqui wrote:
On ven., 2013-01-11 at 08:17 +0100, Hannes Reinecke wrote:
On 01/10/2013 09:13 PM, Benjamin Marzinski wrote:
This patch adds a new multipath.conf option, detect_prio.  If set to yes,
multipathd will try to determine the correct prioritizer for the device. If
it finds one, that will be used instead of its configured prioritizer.  If
none is found, the configured prioritizer will be used.  It can currently
only detect ALUA devices.

Also fixed and issue with select_prio where in the devices section, it was
passing in the prio name string instead of the prio args string to prio_get()

Signed-off-by: Benjamin Marzinski <bmarzins redhat com>

Good idea.

Don"t you think it would be fair to fallback to autodetection if no
prioritizer is set, instead ? Admins would expect the values they care
to set in the config file are honored.

It would, if we had autodetection for more (or, better, all) hardware handlers.
Shouldn't be too hard.

I'll give it a go at it once this patchset is merged.

Cheers,

Hannes
--
Dr. Hannes Reinecke		      zSeries & Storage
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SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
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