Whit Blauvelt wrote: > Hi Deyan, > > This may not be a useful suggestion, but why not just partition your storage > so that your bricks remain uniform? ==> Well this is a good suggestion unless you already have non uniform storage with huge difference in brick sizes. The thing is that I was using one single fs (XFS) which is over LVM and I was growing it each time I add new hdds. However I realized that this could bring me a lot of troubles and decided to switch to glusterfs, which brings the smaller bricks in the game. So basically I dont have enough space to transfer the huge brick to a smaller bricks and that is why I got to this situation. > When you get more disk capacity because > you've got 3TB drives instead of 2TB in RAID5, so that you have 15TB rather > than 10TB per system, why not split the storage into 10TB and 5TB > partitions, use the 10TB for a uniform-sized brick to add to an existing > Gluster storage area, and then take your 5TB partitions and set up another > Gluster share using that as your uniform brick size for it? ===> I am trying to build something like cloud storage using Gluster which basically does not suit to your suggestion. If I wanted to have partitioned storage I would not have chosen glusterfs. What I was imaging was, just add new bricks no matter what size it will handle them automatically, which it does not. If I knew this before I probably would not choose gluster. Thank you Regards, Deyan > > Might not fit your requirements at all - depends on what you're storing and > whether it makes sense to separate it into a couple of different areas. > > Best, > Whit > > > On Wed, Aug 17, 2011 at 04:28:42PM +0300, Deyan Chepishev - SuperHosting.BG wrote: >> Hello, >> >> This is really bad news, because I already migrated my data and I >> just realized that I am screwed because Gluster just does not care >> about the brick sizes. >> It is impossible to move to uniform brick sizes. >> >> Currently we use 2TB HDDs, but the disks are growing and soon we >> will probably use 3TB hdds or whatever other larges sizes appear on >> the market. So if we choose to use raid5 and some level of >> redundancy (for example 6hdds in raid5, no matter what their size >> is) this sooner or later will lead us to non uniform bricks which is >> a problem and it is not correct to expect that we always can or want >> to provide uniform size bricks. >> >> With this way of thinking if we currently have 10T from 6x2T in >> hdd5, at some point when there is a 10T on a single disk we will >> have to use no raid just because gluster can not handle non uniform >> bricks. >> >> Regards, >> Deyan
