Daniel, If you meant to migrate an existing storage from unify-AFR-posix to DHT-AFR-BDB or fresh setup?
-- gowda On Tue, Nov 11, 2008 at 1:05 PM, Basavanagowda Kanur <[EMAIL PROTECTED]>wrote: > Daniel, > Replies inline. > > On Tue, Nov 11, 2008 at 12:10 AM, Daniel van Ham Colchete < > [EMAIL PROTECTED]> wrote: > >> Hi yall! >> >> for the last few days I have been developing a software to benchmark a >> mail server cluster. The reason for this is that first I couldn't find one >> online, second using sequential tests on any filesystem won't give you >> what's best for you because with e-mail everything is happening in parallel >> and you won't see if one option wins on parallelism (tar, rsync, cp, find, >> ls -la, etc all are sequential tests), and third is that there is no better >> way to produce a similar read/write IO pattern. This software will be >> released GPL next month. >> >> Thursday I'll be arriving at my data center (at another continent by the >> way), I'll be there for 13 days and my main objective for these days is to >> put GlusterFS up running there. The current setup is not good enought and it >> doesn't scale anymore. Other things are secondary, although there are a few. >> Throughout those 13 days I will be using my software to study many many >> options for the storage servers, for example: >> >> Filesystem options: Ext3, XFS, ZFS (OpenSolaris) >> RAID options: RAID 10, RAID 5, RAID 6, RAID 0 + (ZFS:RAID-1, ZFS:RAID-Z, >> ZFS:RAID-Z2) >> GlusterFS: 1.3/1.4, Unify/DHT, BDB/Posix, IO-Cache, Read-Ahead, >> Write-Behind >> Network file systems: NFS/GlusterFS (splitting directories with NFS is a >> escape plan). >> >> Besides other options involving e-mail hosting, like what RDBMS I should >> use to do user authentication, etc... >> >> I have 4 nice mail servers (storage clients) and two nice storage servers >> (4TB each) available for the tests. My final setup is exactly the double (8 >> mail servers, 4 storage servers). Right now I have about 9k users checking >> their e-mails every 5 minutes, running with HA-NFS, but this setup is my >> current bottle-neck and it doesn't scale (I can't just add more storage >> servers). I expect to put 15k users on the new setup but I wish it could >> grow bigger. >> >> Of couse I'll send all the results to the list, put on the wiki too (NFS x >> Best GlusterFS for mail storage, how is this going to end?). I would like to >> ask you devs and users a few questions: >> >> (Devs and users) How do I get started with OpenSolaris and ZFS? What >> should I be looking for with my bechmarks? What do I have to study on ZFS >> performance optimization? I have no experience at all here. >> >> (Devs) Can you send me an example on the DHT? The DHT is what I have >> always dreamt about, I'm really betting on it. > > > volume dht > type cluster/dht > subvolume <sub-1> <sub-2> <sub-3> > end-volume > > please note that you need to have support for extended attributes on your > storage. > > >> >> >> (Devs) I've seen by the changelog that the 1.4 tree development is going >> really fast. Bug are being fixed everyday and this is great! I hope I'll >> help to find a fix a few too in this process. So, say 1.4 is much much >> better for me (I'm betting on that), when do you guys expect an stable >> version? How easy is to migrate from 1.3-Unify+AFR+Posix to 1.4-DHT+AFR+BDB? > > > It is pretty straightforward. :) > > DHT servers the same purpose as unify, distributing files over subvolumes. > > You need to have Berkeley DB library for BDB to work. > > >> >> >> Thank you all for all the help! >> >> Best regards, >> Daniel van Ham Colchete >> (IRC: vanham) >> >> _______________________________________________ >> Gluster-devel mailing list >> Gluster-devel@nongnu.org >> http://lists.nongnu.org/mailman/listinfo/gluster-devel >> >> > > > -- > hard work often pays off after time, but laziness always pays off now > -- hard work often pays off after time, but laziness always pays off now
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