>Hi, > >I just discovered GlusterFS and it looks great ! I will definitely give >it a try. Soon. >In particular, the NUFA translator seems to meet my needs (use local >resources as far as possible). I've read most of the documentation about >NUFA but I still have some unanswered questions : > >- What happens if a node fills up its entire local storage ? Are new >data transfered to another node ? Or does it crash ? >- What about data protection ? As I understand it, if a node dies in a >NUFA cluster, its files are gone with it ? > >On http://www.gluster.org/docs/index.php/GlusterFS_Roadmap_Suggestions >Jshook say that in order to combine NUFA and afr functionnality, you >just have to use afr with local volume name, and have read-subvolume >option set to local volume. That's true in the case of a 2 nodes >cluster, but in a 100 nodes cluster, you would still have the capacity >of only 1 node, and 100 copies of each file. Am I right ? > >What would be great is to have the ability to create parity bricks : >something like having 98 nodes in a NUFA cluster and 2 parity nodes that >are just here in case a node (or two) went down. I saw that you had >graid6 on your roadmap, so do you think that's possible ? And if so, >when (approximately) ? > >Anyway, thanks for the work you made so far. I'll certainly be back >annoying you when I'll start testing it ;-) > >Regards, > > I saw RAID-6 support on the road map also, and agree it would be great to get some type of protection against brick failure. I got to thinking... instead of doing RAID-6 maybe it would be better to do something like ZFS raid-z on the brick level. Treat each brick like a vdev and the collection of bricks like a zpool! I'm sure it's far more complicated than that, but do any of the developers out there think it would possible to merge the two (RAIDZ & GlusterFS)? I guess the hardest part would be trying to figure out where the checking would get done; client side or brick side? -fc -- "I have come here to chew bubble gum and kick ass; and I'm all out of bubble gum." ? ?~Rowdy Roddy Piper - 'They Live'
