On Tue, Nov 24, 2015 at 10:35:20AM -0500, Jeff Darcy wrote: > > > > On November 24, 2015 at 6:47:59 AM, Avik Sil (avik.sil@xxxxxxxx) wrote: > > While searching for caching support in glusterfs I stumbled upon this > > link: > > http://www.gluster.org/community/documentation/index.php/Features/caching > > > > But I didn't get much info from it. What is plan ahead? > > There is some ongoing work on creating and improving the support > necessary to support caching/delegations in Ganesha (NFS) and Samba > (SMB). Perhaps members of those teams could elaborate. Unfortunately, > there’s no current work on using those same features to create a > generalized caching layer within “core” (native protocol) GlusterFS > itself. While there’s broad agreement that it would be useful, such an > effort requires someone to lead/drive it and nobody has stepped up to do > so. Both the Linux NFS client (nfs kernel module) and the Linux SMB client (cifs kernel module) support client-side read-caching through FS-Cache. To use this, you basically do the following: # yum install cachefilesd # systemctl enable cachefilesd # systemctl start cachefilesd # mount -t nfs -o fsc storage.example.com:/volume /mnt The above is from memory, and may not be completely correct. You can find more details here: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/filesystems/caching/fscache.txt http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/filesystems/caching/cachefiles.txt There was a start to add support for FS-Cache to the FUSE kernel module, but progress on that has stalled for a while. Assistance with that is welcome, and I can find the work-in-progress patches if someone is interested in helping out. HTH, Niels
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