Thanks Benny. Is it OK if we merge, pnfs tree and open-osd, on Monday in BAT first thing? Tonight it's to late, and tomorrow I'm already flying. So Monday. Have a safe trip Boaz On 10/14/2011 07:50 PM, Benny Halevy wrote: > Awesome! > > Benny > -----Original Message----- > From: Boaz Harrosh <bharrosh@xxxxxxxxxxx> > Sender: linux-nfs-owner@xxxxxxxxxxxxxxx > Date: Fri, 14 Oct 2011 19:24:14 > To: Welch, Brent<welch@xxxxxxxxxxx>; open-osd<osd-dev@xxxxxxxxxxxx>; NFS list<linux-nfs@xxxxxxxxxxxxxxx>; linux-fsdevel<linux-fsdevel@xxxxxxxxxxxxxxx> > Subject: [PATCHSET 0/1 0/6] ore: RAID5 Support > > > I'm proud to present RAID5 support to ORE. Which enables raid5 for both > exofs and pnfs-objects-layout driver. > > The ORE with raid0/1/5 and soon 6 support has become a compact and abstract > library, that with not a lot of effort, can support not only OSD but any > type of devices. For example BTRFS, does it have a RAID5 support yet? if > not it could use ORE. The ORE gets a bunch of pages at the top and produces > bios for each device at the bottom. The libosd API can be easily abstracted > and be used for block devices, just the same. The RAID layout supported by > ORE is very rich, multi layered striping/mirroring/raid. even reacher then > stacked MD. You can read about this layout here: > http://git.open-osd.org/gitweb.cgi?p=ietf-rfc5664.git;a=blob_plain;f=draft-ietf-nfsv4-rfc5664bis.html;hb=boaz2 > Start at: 5.3. "Data Mapping Schemes" up to: > 5.4.5. "RAID Usage and Implementation Notes" > > There where some problems with the previous patchset here are > the differences I squashed it to a new patchset at osd/linux-next. > > [PATCH 1/1] SQUASHME: into: ore: Only IO one group at a time (API change) > > And without farther ado Here is the RAID5 support. This is highly complicated > stuff, for humble me at least, and I would appreciate any review and/or comments > you guys can give it. Thanks in advance. (Pretty Please? :-)) > > [PATCH 1/6] ore: Make ore_calc_stripe_info EXPORT_SYMBOL > [PATCH 2/6] ore: RAID5 read > [PATCH 3/6] ore: RAID5 Write > [PATCH 4/6] exofs: Support for RAID5 read-4-write interface. > [PATCH 5/6] pnfs-obj: Support for RAID5 read-4-write interface. > [PATCH 6/6] ore: Enable RAID5 mounts > > A tree with above plus all prerequisites is at: > $ git clone git://open-osd.org/linux-open-osd linux-next > [http://git.open-osd.org/gitweb.cgi?p=linux-open-osd.git;a=shortlog;h=refs/heads/merge_and_compile] > > The code passes my tests, the highlight of which is git-clone linux and compare to > and identical clone on ext4. But there must be month of farther testing done on this > to get it better. For example. Aligned on stripe IO write back should be improved on > all the way down to the VFS layer. > > Thanks > Boaz > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
