On Tue, Aug 31, 2010 at 05:12:24PM -0400, Boris Epstein wrote: > On Tue, Aug 10, 2010 at 11:53 AM, Ray Van Dolson <rayvd at bludgeon.org> wrote: > > On Tue, Aug 10, 2010 at 11:48:17AM -0400, Boris Epstein wrote: > >> Hi all, > >> > >> If you have had experience hosting GFS/GFS2 on CentOS machines could > >> you share you general impression on it? Was it realiable? Fast? Any > >> issues or concerns? > > > > I've only run GFS2 on RHEL5. It's been quite reliable, but certainly > > has a bit of a learning curve from regular filesystems. > > > > It's fast enough, but if you have more than one node, keep in mind > > you'll potentially be held back by lock manager contention under > > certain workloads (like reading information on every inode on the > > system for backup purposes, etc). > > > > For our uses (home directory server), it's more than adequate. > > > >> > >> Also, how feasible is it to start it on just one machine and then grow > >> it out if necessary? > > > > Haven't yet done this, but it can run on top of LVM just fine (clvm in > > fact). > > > >> Thanks. > >> > >> Boris. > > > > Ray > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > Thanks Ray! > > Is it feasible to export GFS to NFS clients? Yup, this is exactly what we do (export GFS2 to NFS clients). > > And one more interesting thing. Wikipedia ( > http://en.wikipedia.org/wiki/Global_File_System ) says that GFS2 is > supported only starting at kernel 2.6.19 but on my CentOS 5.5 uname > says: > > > [bepstein at dellnikon ~]$ uname -a > Linux dellnikon 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:35 EDT 2010 i686 > i686 i386 GNU/Linux > [bepstein at dellnikon ~]$ > > Could thins be a problem? Nope, Red Hat backports the necessary bits from the newer kernels into their 2.6.18 "stable" release, so you should be all set. Ray