[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: AW: RAID greater than 2TB on Fedora Core 3

On Mon, 2005-04-04 at 15:09, Masopust Christian wrote:
> hi scot,
> it's a RAID5 with 8 x 400GB disks, so i'd expected a size of
> appr. 2,8TB (Raid says it's about 2,6TB) but Fedora only see
> exactly 2TB....

That should give you 3200GB raw and in raid 5 there will be about 12.5% 
(1/8 * 100)  overhead or ~400GB.  Which means you should get about
~2800GB of usable space.  You will lose a little more when you format
the partition.  

I did find this reference to a 2TB limit for block devices:


Read almost at the bottom of the page.

And this article that seems to indicate a patch for this is being worked


So it does appear that you may be hitting a kernel limitation on >2TB
file systems.

I recently did create a 1TB file system from four 300GB hard drives
using LVM.  No raid on this as I am not that concerned about this

Using XFS file system and it is working very well.  Used over 600GB on
it so far.

Scot L. Harris
webid cfl rr com

Q:	What's buried in Grant's tomb?
A:	A corpse. 

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]