Hi Bob! On Tue, 17 Feb 2009 09:55:41 -0700 Bob Barton <[log in to unmask]> wrote: > I am setting up a 2 TB file system to use for AFS volumes > on an AFS file server and I am wondering which file > system I should use - XFS or ext3. I plan to use > Scientific Linux 5.1 or 5.2 x86_64 as the operating > system on the file server machine. > Suggestions, comments and recommendations are very > welcome. Assuming that you use LVM anyway, I would recommend xfs. It is said to be slightly faster than ext3 (I have not tested this by myself), it can take more directories, which in the case of AFS is not important and - the main point - you can modify the size of the filesystem with # xfs_growfs while xfs is mounted! E.g. if you want to add disks to your RAID ... I have very good experience extending LVM and xfs whithout stopping the service. Please keep in mind that you cannot extend an xfs while it is 100.00% full. At least some blocks must be free :-) Cheers Anton J. Gamel HPC und GRID-Computing Physikalisches Institut Abteilung Professor Herten c/o Rechenzentrum der Universität Freiburg Arbeitsgruppe Dr. Winterer Hermann-Herder-Straße 10 79104 Freiburg Tel.: ++49 (0)761 203 -4672 -- Es bleibt immer ein Rest - und ein Rest vom Rest.