On 12/08/2015 08:37 AM, Hannes Reinecke wrote:
Hi all,
as promised here is now the second part of my ALUA device handler update.
This contains a major rework of the ALUA device handler as execution is
moved onto a workqueue. This has the advantage that we avoid having to
do multiple calls to the same LUN (as happens frequently when failing
over a LUN with several paths) and finally retries are handled correctly.
As some arrays are only capable of handling one STPG at a time I've added
a module parameter 'sync_stpg' which switches to a singlethreaded
workqueue, thereby effectively synchronize STPG handling.
Thanks to Bart for this suggestion.
As usual, comments and reviews are welcome.
As I've been reminded a git reference would be welcome for review.
So you can find the entire patchset at
git://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git
branch alua.v8
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
h...@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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