On Wed, Jan 27, 2016 at 5:34 PM, Niels de Vos <nde...@redhat.com> wrote:
> Hi all, > > yesterday I have posted the latest version of a series that implements > support for lseek() with SEEK_DATA/SEEK_HOLE. This functionality can > improve the handling of sparse files immensely. > > Please review the changes that involve components if your interest: > > > http://review.gluster.org/#/q/status:open+project:glusterfs+branch:master+topic:bug-1220173 > > Once these changes made it in, we can detect holes with glfs_lseek() and > can improve NFS-Ganesha, QEMU, Samba and glusterfs-coreutils. There are > probably other projects where we should contribute improvements for > SEEK_DATA/SEEK_HOLE (like 'cp' from coreutils?). > > Ravi already got his Linux kernel FUSE patch merged, kernel-4.5 will > support lseek() through FUSE as well: > > > http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/fuse?id=0b5da8db145bfd44266ac964a2636a0cf8d7c286 > > Eventhough this is a fairly basic (though relatively new) filesystem > functionality, I want to document it in a feature page in our > glusterfs-specs repository: > > https://github.com/gluster/glusterfs-specs > > Once the document is posted in Gerrit, I'll send a reply to this email > to get some more reviews. > > Thanks, > Niels > > > Note to other maintainers: > > There is some order of merging changes needed. A new FOP has been > added, and some patches depend on the new GF_FOP_SEEK or other core > bits. > > Change-Id: I4b74fce8b0bad2f45291fd2c2b9e243c4f4a1aa9 > core: add seek() FOP > > Change-Id: I0c15153beb27de73d5844b6f692175750fc28f60 > syncop: add seek() FOP > > Change-Id: I060768a8a4b9b1c80f4a24c0f17d630f7f028690 > protocol: implement seek() FOP > > Change-Id: I100b741d9bfacb799df318bb081f2497c0664927 > afr: add seek() FOP > > Change-Id: Iaa23ba81df4ee78ddaab1f96b3d926a563b4bb3d > cluster/ec: add seek() FOP > > Change-Id: I5c272855a21501ac31e1a5f4b68ed7245582c17c > shard: add seek() FOP as not supported > > Change-Id: I5d15533c53fd710497f97c3cb4a8ea29fba47271 > posix: implement seek() FOP > > Change-Id: Ic86919d28cf639b561114dc1440c6ea4bc6f7307 > upcall: add seek() FOP > > Change-Id: I142dde11923244809b03fcca8cd4c2f7d5ff3929 > gfapi: add support for SEEK_HOLE and SEEK_DATA in > > Change-Id: I8d0573ed8b2ea5ce976ad140a24be7974dbad0e3 > gfapi: add test for glfs_lseek() SEEK_DATA/SEEK_HOLE > > Change-Id: I58c74e161638b2d4ce12fc91a206fdc1b96de14d > fuse: update fuse_kernel.h to version 23 > > Change-Id: I12496d788e59461a3023ddd30e0ea3179007f77e > fuse: add support for SEEK_HOLE and SEEK_DATA through lseek() > > Change-Id: Ifdee3c793e33f9d763940130e8d01a61eae5498a > tests: add seek program for testing SEEK_DATA/SEEK_HOLE over > > Change-Id: I9cfed795737609120eafe86f9287d79057b14fe2 > stripe: add seek() FOP as not supported > Thanks for the order. Today, shard patch[1] for seek() had got merged before we could look at this mail. The revert patch for that is merged now[2]. I request you to send another patch for the same. [1] http://review.gluster.org/#/c/13290/ [2] http://review.gluster.org/#/c/13301/ > > _______________________________________________ > maintainers mailing list > maintain...@gluster.org > http://www.gluster.org/mailman/listinfo/maintainers > >
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