From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Snitzer Subject: Re: Persistent Reservation API V4 Date: Wed, 28 Oct 2015 14:43:56 -0400 Message-ID: <20151028184356.GA21933@redhat.com> References: <1444911052-9423-1-git-send-email-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1444911052-9423-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org> Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Christoph Hellwig Cc: axboe-b10kYP2dOMg@public.gmane.org, linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, keith.busch-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org List-Id: linux-api@vger.kernel.org On Thu, Oct 15 2015 at 8:10am -0400, Christoph Hellwig wrote: > This series adds support for a simplified Persistent Reservation API > to the block layer. The intent is that both in-kernel and userspace > consumers can use the API instead of having to hand craft SCSI or NVMe > command through the various pass through interfaces. It also adds > DM support as getting reservations through dm-multipath is a major > pain with the current scheme. > > The ioctl API is documented in Documentation/block/pr.txt, but to > fully understand the concept you'll have to read up the SPC spec, > PRs are too complicated that trying to rephrase them into different > terminology is just going to create confusion. > > Note that Mike wants to include the DM patches so through the DM > tree, so they are only included for reference. I looked at these again and the DM changes look good. Any update on if/when the block changes will land?