Hi Xose, On Mon, 2019-04-01 at 01:16 +0200, Xose Vazquez Perez wrote: > On 9/14/14 10:39 AM, Hannes Reinecke wrote: > > > We do this with the switch to request-based multipathing. > > Using one of the other load balancers (eg least-pending) and set > > rr_min_io to '1' will give you exactly that behaviour. > > As the original authors team, at HP, was dissolved ( > https://bugzilla.redhat.com/show_bug.cgi?id=438760#c14 ) > Hannes, do you consider least-pending mp selector helpful for > upstream? > I can't speak for Hannes, but I believe that the functionality provided by this patch is mostly provided by the "queue-length" path selector today. "service-time" has been the default since 2013, and most users seem to be fine with that. It's true that SLES kernels still support it, but I don't think it's used much, if at all. Even if the "least pending" selector was still needed, the patch would need updating for current upstream, to accomodate the changes from 9659f811446a "dm mpath: push path selector locking down to path selectors", and possibly other changes in the general dm/path selector framework. Martin -- Dr. Martin Wilck <mwilck@xxxxxxxx>, Tel. +49 (0)911 74053 2107 SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
