Hi Keith There's a section on the website that gives the configuration for a unify/AFR but doesn't say whether AFR goes above or below unify. At the moment I don't need the whole 2TB and I can live with half of it, but I might down the road need the extra space. If and when that happens is it possible to break the unify/AFR and move everything to only unify without deleting data (not that will be an obstacle, see below)? Can anyone answer the question: does AFR goes above or below unify? I don't think that the data stored on the gluster volume will be mission critical: it 's genomic data that is being processed on the cluster. I think that the worst case scenario in case of brick loss will be that a few hours of processing will be lost. -- TIA Paolo On Wed, Sep 17, 2008 at 12:22 PM, Keith Freedman <freedman at freeformit.com>wrote: > Some other things to consider: > > the unify is a good idea to make use of all your space. However, with that > many nodes, your probability of a node failing is high. > so just be aware, if one of the nodes fails, whatever data stored on that > node will be lost. > > If you dont need the full 2TB's then I'd suggest using AFR. > > I *think* you can run afr UNDER unify, so you would create one unify brick > with half the machines, another with the other half and AFR across them. > but I'm not sure.. it may be that AFR has to be above Unify > > of course, if you don't care about the data really, i.e. it's all backup or > working space or temp files, etc.. then no need to AFR them. > > Keith > > At 01:52 AM 9/17/2008, Paolo Supino wrote: > >> Hi Raghavendra >> >> I like your reply and definitely will give it a try. There's nothing I >> hate mre than wasted infrastructure ... >> >> >> >> >> >> >> -- >> TIA >> Paolo >> >> >> On Wed, Sep 17, 2008 at 8:13 AM, Raghavendra G <<mailto: >> raghavendra.hg at gmail.com>raghavendra.hg at gmail.com> wrote: >> Hi Paolo, >> >> One of the configurations is to have glusterfs as server on each of the >> nodes exporting a brick. Each node should also have glusterfs running as >> client having unify translator, unifying all the servers. >> >> regards, >> >> On Tue, Sep 16, 2008 at 10:34 PM, Paolo Supino <<mailto: >> paolo.supino at gmail.com>paolo.supino at gmail.com> wrote: >> Hi >> >> I have a small HPC cluster of 36 nodes (1 head, 35 compute). Each of the >> nodes has a 1 65GB (~ 2.2TB combined) volume that isn't being used. I >> thought of using a parallel filesystem in order to put this unused space >> into good use. The configuration I had in mind is: All nodes will act a >> bricks and all nodes will act as clients. I have no experience with Gluster >> and want to know what people on the mailing list thought of the idea, >> deployment scenario, pros and cons etc ... Any reply will help :-) >> >> >> >> -- >> TIA >> Paolo >> >> >> _______________________________________________ >> Gluster-users mailing list >> <mailto:Gluster-users at gluster.org>Gluster-users at gluster.org >> http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users >> >> >> >> >> -- >> Raghavendra G >> >> A centipede was happy quite, until a toad in fun, >> Said, "Prey, which leg comes after which?", >> This raised his doubts to such a pitch, >> He fell flat into the ditch, >> Not knowing how to run. >> -Anonymous >> >> >> _______________________________________________ >> Gluster-users mailing list >> Gluster-users at gluster.org >> http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://zresearch.com/pipermail/gluster-users/attachments/20080917/b97b508c/attachment-0001.htm
