[dm-devel] [RFC PATCH v2] dm mpath: add a queue_if_no_path timeout

[Hannes Reinecke]

On 10/30/2013 04:43 PM, Mike Snitzer wrote:
> On Wed, Oct 30 2013 at 11:08am -0400,
> Frank Mayhar <fmayhar at google.com> wrote:
>
>> On Tue, 2013-10-29 at 21:02 -0400, Mike Snitzer wrote:
>>> Any interest in this or should I just table it for >= v3.14?
>>
>> Sorry, I've been busy putting out another fire.  Yes, there's definitely
>> still interest.  I grabbed your revised patch and tested with it.
>> Unfortunately the timeout doesn't actually fire when requests are queued
>> due to queue_if_no_path; IIRC the block request queue timeout logic
>> wasn't triggering.  I planned to look into it more deeply figure out why
>> but I had to spend all last week fixing a nasty race and hadn't gotten
>> back to it yet.
>
> OK, Hannes, any idea why this might be happening?  The patch in question
> is here: https://patchwork.kernel.org/patch/3070391/
>
Not yet; currently I'm on vacation, but will be looking into it on Monday.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare at suse.de			      +49 911 74053 688
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