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

On 10/30/2013 04:43 PM, Mike Snitzer wrote:
On Wed, Oct 30 2013 at 11:08am -0400,
Frank Mayhar <fmayhar 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.


Dr. Hannes Reinecke		      zSeries & Storage
hare suse de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)

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