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On Wed, 10 Mar 2010, Simon Waters wrote:
ZFS has block level deduplication, choice of compression algorithms (which can be changed dynamically at any time) for block level compression, and variable block size, you don't even want to start thinking about the implications of this for disk space efficiency, or I/O efficiency. Let us say it makes sense for hosting virtual operating systems and many other tasks. Although if SUN's^W Oracle's marketing plan is selling to people who understand file systems they aren't going to sell much to most purchasers of IT systems. Simon with a bad case of file system envy.
btrfs is ... stable ... ish.... :-)Although originally and Oracle project, it's now fully GPL and integrated into the kernel as of 2.6.29 (but AIUI 2.6.31 is recomended!) ...
Not had time/nerve/need to give it a go myself yet! I've been a bit conservative over the years however - got burnt with xfs in the early days, dabbled with jfs and reiser, but never got a real "feel good" feeling about them, so stuck with ext2/3. I did build a server with ext4 middle of last year, but things were still changing then, so re-did it ext3 at the last moment before sending it away.
But it sort of looking like skippng ext4 and going directly to btrfs, but who knows!
Gordon -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html