From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Valiquette Subject: Re: Fwd: Linux MD raid5 and reiser4... Any experience ? Date: Fri, 06 Jan 2006 04:47:05 -0500 Message-ID: <43BE3C99.4050706@ieee.org> References: <87oe2r2d93.fsf@rimspace.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids =46rancois Barre a =E9crit : > 2006/1/5, Daniel Pittman : >=20 >>Francois Barre writes: >> >>>Well, I think everything is in the subject... I am looking at this >>>solution for a 6*250GB raid5 data server, evolving in a 12*250 rai5 = in >>>the months to come... Performance is absolutely not a big issue for >>>me, but I would not appreciate any data loss. >=20 > Well, as far as I understood it (that is, not so far :-p), reiser4 > seemed to have a stronger and more efficient journal than ext3. That > is not what everyone believes, but reiser4 was to be designed that wa= y > more or less... But I guess that ext3 and its very-heavily-tested > journal can still be more trusted than any newcomer. >=20 > Truth is, I would have been glad to play with reiser4 on a large > amount of data, just because I was interrested on the theories behind > it (including the database-filesystem strange wedding Hans tried to > organize). Maybe it's too great a risk for a production system. >=20 > Well, anyway, thanks for the advice. Guess I'll have to stay on ext3 > if I don't want to have nightmares... AFAIK, ext3 volume cannot be bigger than 4TB on a 32 bits system. I think it is important you know that in case it could be a concern for you. Personnally, I also don't like using ext2/3 on a array bigger than 2TB. With 12x250GB, you are already well over 2TB, and maybe some day you will realize that you needs more than 4TB. If you have a 64 bits computers, just forget what I said (16TB is the limit). On production server with large RAID array, I tends to like very much XFS and trust it more than ReiserFS (I had some bad experience with ReiserFS in the past). You can also grow a XFS filesystem live, which is really nice. XFS is finally much faster than EXT3 and self-defragmenting, but that was not a concern for you anyway. Simon Valiquette http://gulus.USherbrooke.ca http://www.gulus.org - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html