On Fri, 17 Apr 2009, Ross Walker wrote: > Time to format isn't really an issue as it is done once before being > put into production. The biggest concern is processing performance and > time to fsck as well as data integrity and recoverability. Listen, when you're talking a multi TB or PB file system it *is* an issue I assure you. With disk sizes growing like they are it is only going to get worse. This is a concern for a great many of us. > Besides XFS allocates inodes on the fly, that's why it's so fast > formatting, but why ext4 is a little faster processing. EXT4 is in a few edge cases faster due to this, but XFS is still very fast in almost all other scenarios despite this. -- James A. Peltier Systems Analyst (FASNet), VIVARIUM Technical Director Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpeltier at sfu.ca Website : http://www.fas.sfu.ca | http://vivarium.cs.sfu.ca http://blogs.sfu.ca/people/jpeltier MSN : subatomic_spam at hotmail.com The point of the HPC scheduler is to keep everyone equally unhappy.