-------- Original-Nachricht -------- > Datum: Thu, 18 Feb 2010 13:51:33 -0600 > Von: Eric Rostetter <rostet...@mail.utexas.edu> > An: dovecot@dovecot.org > Betreff: Re: [Dovecot] GlusterFs - Any new progress reports?
> Quoting Steve <steeeeev...@gmx.net>: > > >> > My interest is more in bootstrapping a more highly available system > >> > from lower quality (commodity) components than very high end use > >> > >> GFS+DRBD should fit the bill... You need several nics and cables, > >> but they are dirt cheap... Just 2 machines with the same disk setup, > >> and a handful of nics and cables, and you are off and running... > >> > > Can you easy scale that GFS2+DRBD to have more then just 2 nodes? Is > > Not really, no. You can have those two nodes distribute it out via > gnbd though... Red Hat claims it scales well, but I've not yet tested > it... > I have already installed GFS on a cluster in the past, but never on DRBD. > > Can all the > > nodes at the same time be active or is one node always the master > > and the other a hot spare that kicks in when the master is down? > > The free version of DRBD only supports max 2 nodes. They can be > active-active > or active-passive. > > The non-free version is supposed to support 3 nodes, but I've heard > conflicting > reports on what the 3rd node can do... You'd have to investigate that > yourself... I'm not interested in it, since I don't want to pay for it... > (Though I am willing to donate to the project) > Hmm... when I started with GlusterFS I thought that using more then two nodes is something that I will never need. But now that I have GlusterFS up and running and I am using more then two nodes I really see a benefit in being able to use more then two nodes. For me this is a big advantage of GlusterFS compared to DRBD. > My proposed solution to the more-than-two-nodes is gnbd... > Never heard of it before. Don't like the fact that I need to patch the Kernel in order to get it working. > If that doesn't meet your needs, then DRBD probably isn't the proper > choice. > You didn't mention anything about number of nodes in your original post, > IIRC. > I did not post the original post. I just responded to the original post saying that GlusterFS works for me. > >> > Thanks > >> > > >> > Ed W > > -- > Eric Rostetter > The Department of Physics > The University of Texas at Austin > > Go Longhorns! -- NEU: Mit GMX DSL über 1000,- ¿ sparen! http://portal.gmx.net/de/go/dsl02