On Sun, Jan 02, 2011 at 04:49:44PM -0500, Joshua Baker-LePain wrote: > On Sun, 2 Jan 2011 at 1:45pm, Robert Arkiletian wrote > > > I just read the rhel6 filesystem size limit. > > > > http://www.redhat.com/rhel/compare/ > > > > It says 16TB limit for ext4 (same as ext3)?!?! I thought ext4 was > > supposed to support 1EB ( ~ 1 million TB) limit. That was one of the > > main advantages of rhel6. After a little more digging all I found was > > that the user space formatting tools (mkfs.ext4) only support 32bit > > filesystems (not 48bits). I'm surprised about this, I thought people > > would be waiting for >16TB support in rhel6. Does anyone know if this > > is going to change in point releases of rhel/centos6? > > I did some googling on this recently, and I found that while ext4 > theoretically supports such large filesystems (and you can find/compile > userspace tools to create them), the developers don't really recommend > using it for such yet. It's just not deemed ready for production yet. I > saw multiple recommendation (including from RH devs) to use XFS if you > need filesystems that big. > I think there's a problem at least in mkfs.ext4 etc, they're not able to handle >16TB filesystems yet. -- Pasi