On Tue, Apr 12, 2011 at 3:36 AM, Alain Péan <alain.pean@lpp.polytechnique.fr

wrote:

Le 12/04/2011 09:23, Matthew Feinberg a écrit :

...

Hello All

I have a brand spanking new 40TB Hardware Raid6 array to play around with. I am looking for recommendations for which filesystem to use. I am trying not to break this up into multiple file systems as we are going to use it for backups. Other factors is performance and reliability.

CentOS 5.6

array is /dev/sdb

So here is what I have tried so far reiserfs is limited to 16TB ext4 does not seem to be fully baked in 5.6 yet. parted 1.8 does not support creating ext4 (strange)

Anyone work with large filesystems like this that have any suggestions/recommendations?

Hi Matthew,

I would go for xfs, which is now supported in CentOS. This is what I use for a 16 TB storage, with CentOS 5.3 (Rocks Cluster), and it woks fine. No problem with lengthy fsck, as with ext3 (which does not support such capacities). I did not try yet ext4...

Alain

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Alain Péan - LPP/CNRS Administrateur Système/Réseau Laboratoire de Physique des Plasmas - UMR 7648 Observatoire de Saint-Maur 4, av de Neptune, Bat. A 94100 Saint-Maur des Fossés Tel : 01-45-11-42-39 - Fax : 01-48-89-44-33 ==========================================================

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CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

I fully second Alain's opinion. An fsck on a 6 TB RAID6 containing about 30 million files takes over 10 hours.

As for XFS, we are running it on a 25 TB array and so far there has been no trouble.

Boris.

Boris.