Michael Austin <onedbg...@gmail.com> 2010-05-24 13:32: > I would like to get some feedback on the overall perception on the support > and stability of OCFS2 (latest). This tool looks like a perfect fit for > a production system I am planning, but, due to it's open source roots, > there are some concerns about s&s. The app will be deemed mission > critical with very little tolerance for any downtime (24x365). > > Thanks. > > M. Austin > Consultant
It pains me to, but I can't say I'd recommend it for something like a mail setup that has heavy write of tiny files. There's a fragmentation issue that burned us bad recently and before that a locking issue (search the archives). Even then I have to say that the Oracle devs were responsive to us even without a service contract, for which I'm very grateful. You might have better luck with a "supported" distro. I've always used mainline kernels with Debian. That said, I had been using an earlier version for a web server backend (couple of TB, mostly read) and a video streaming library (_many_ TB and _lots_ of read traffic) for a long time without any reports of problems. I don't work there anymore, but from what I hear everything's still humming along without interruption (that should be read overall cluster interruption) for almost 3 years now. That even with crummy server rooms that try bake their inhabitants from time to time :) I will also say just off hand that OCFS2 is still the best OSS shared disk cluster fs I've tried. I've tested GFS2 off and on for a couple of years and it still has a rather trivial deadlock case: # cssh node1 node2 node3 # mkdir /cluster/$HOSTNAME # touch /cluster/$HOSTNAME/test # rm -rf /cluster/* Cheers, Brian
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