2tb limit?

Dan Lund situationalawareness at gmail.com
Wed May 2 11:58:40 MST 2007


Well I doubt its failing hardware on a raid6+2, I was leaning more
towards device constraints and was wondering if anyone else has dealt
with a device greater than 2tb.



On 5/2/07, Mike Garfias <mike at garfias.org> wrote:
> On May 2, 2007, at 11:32 AM, Dan Lund wrote:
>
> > So I have a partition I use for backups and its 52 percent full... I'm
> > getting filesystems full errors, and its xfs.
> > I was running debian stable until 10 mins ago and put on centos 4.4
> > (not 5 because of drivers).  I haven't tried it with centos yet.
> >
> > I wanted to run it across you guys and see if there's somw 2tb
> > barrier?
>
> Filesystem size of a 64bit XFS is 9 exabytes.
>
> Under 2.4 with a 4K page size you're limited to 16TB max file size.
> That grows to 64TB max with a 16K page size.  With a 2.6 kernel and
> CONFIG_LBD set you're looking at a max file size of 9 million TB.
>
> I don't think your file system is the constraint.  I've had similar
> behavior when dealing with failing hardware - that would be where I'd
> start first.
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