On 04.08.2012 16:36, ashkab rahmani wrote: > thank you. very usefull > i think i'll try btrfs or jfs, > i'll send you btrfs result for you. Please note: The Btrfs code of CentOS 6.3 is based on kernel 2.6.32. This is very experimental. If you want to try Btrfs, then use kernel 3.2 or higher. (there are thousands of bug fixes and improvements since 2.6.32) Anyway, I still recommend ext4 or xfs. Best regards, Morten