On 01/13/2017 05:07 PM, Mike Snitzer wrote: > On Fri, Jan 13 2017 at 10:56am -0500, > Hannes Reinecke <hare@xxxxxxx> wrote: > >> On 01/12/2017 06:29 PM, Benjamin Marzinski wrote: [ .. ] >>> While I've daydreamed of rewriting the multipath tools multiple times, >>> and having nothing aginst you doing it in concept, I would be happier >>> knowing that it won't simply mean that there are two sets of tools, that >>> both need to be supported to deal with all customer configurations. >>> >> Sure. I feel the pain of supporting multipath-tools all too strongly. >> Having two tools for the same thing is always a pain, and I would like >> to avoid this if at all possible. > > I welcome your work. Should help us focus on what fat needs to be > trimmed from both multipath-tools and kernel. > > Might be a good time to branch multipath-tools and get very aggressive > with trimming stuff that is outdated. > > Things like the event stuff, using select interface, that Andy Grover is > working on (and Mikulas is taking a stab at finishing/optimizing) is > something that might help... but your approach described in this thread > may prove better. > > Point is, everything should be on the table for revitalizing multipath > userspace (and kernel) to meet new requirements (e.g. NVMEoF, etc). > > And yes, I'd prefer to ultimately see these advances land in terms of DM > multipath advances but we'll take it as it comes. I'm fully on board with that. And it would be good if Ben Marzinski would be present, too; he might have some insights which both of us might lack (like the ominous dm-event interface into multipathd where we both struggle to figure out what it's for ...) Looking forward to that discussion. And promising to have some results by then. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
