Date: Sat, 26 Apr 2014 14:50:02 -0700 From: <dteske@FreeBSD.org> To: "'Rick Macklem'" <rmacklem@uoguelph.ca>, "'FreeBSD Filesystems'" <freebsd-fs@freebsd.org> Subject: RE: using ceph as a backend for an NFSv4.1 pNFS server Message-ID: <041b01cf6199$7b52d3b0$71f87b10$@FreeBSD.org> In-Reply-To: <507714298.1684844.1398541651089.JavaMail.root@uoguelph.ca> References: <507714298.1684844.1398541651089.JavaMail.root@uoguelph.ca>
next in thread | previous in thread | raw e-mail | index | archive | help
> -----Original Message----- > From: Rick Macklem [mailto:rmacklem@uoguelph.ca] > Sent: Saturday, April 26, 2014 12:48 PM > To: FreeBSD Filesystems > Subject: RFC: using ceph as a backend for an NFSv4.1 pNFS server > > Hi, > > The non-pNFS v4.1 server in the projects area is just about ready for head, I > think. However, without pNFS, NFSv4.1 isn't all that interesting. The problem > is that doing a pNFS server is a non-trivial exercise. I am now somewhat > familiar with pNFS (from doing the client side), but have no expertise w.r.t. > cluster file systems, etc. > > For those not familiar with pNFS, the basic idea is that the NFSv4.1 server > becomes a metadata server (MDS) and hands out what are called layouts and > devinfo, so that the client can access data server(s) (DS) to read/write the > file. There are RFCs that define both block/volume (using iSCSI or similar) and > object (using something called ODS2). > > Although I suspect there are many ways to do a pNFS server, I think that > building it on top of a cluster file system may be the simplest. > > So, this leads me to... > At a glance (just the web pages, I haven't looked at the source), it appears > that ceph might be useful as a backend to a pNFS server. > It has a POSIX interface (that could be used by the metadata server) as well > as both object (not ODS2 I suspect) and block interfaces. > > The licensing appears to be LGPL, which isn't ideal, but I'd say better than > GPLv3 (which is what Glustre appears to be). > > Does anyone have experience using ceph or some other cluster file system > such that you might have some idea w.r.t. its usefulness for this? > My spies @ Mozilla tell me it's all the rage there and they've been saying this for years. -- Devin _____________ The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?041b01cf6199$7b52d3b0$71f87b10$>