[Lustre-discuss] 8T Limit
Heiko Schröter
schroete at iup.physik.uni-bremen.de
Tue Jan 26 23:06:00 PST 2010
Am Dienstag 26 Januar 2010 18:15:13 schrieb Peter Jones:
Any chance for 16TB+ with ext4 on vanilla kernels ?
If yes, which kernel version ?
Regards
Heiko
> Yes, that is correct. So far we have only tested on RHEL5, but I believe
> that this should also work in theory on SLES11. However, we have so far
> been unable to find a volunteer able to help with SLES11 testing to
> confirm that the practice matches up with the theory. I have been
> talking with a couple of our OEM partners about this possibility so
> hopefully we can get this done in the near future. A couple of sites
> have been testing 16TB LUNs on RHEL with a pre-release version of 1.8.2
> and the feedback so far has been positive.
>
> Brian J. Murrell wrote:
> > On Tue, 2010-01-26 at 09:18 -0500, Roger Spellman wrote:
> >
> >> I recall that there is an 8T limit on the size of an OST. Is that
> >> just for Lustre 1.6? Or also 1.8 and 2.0?
> >>
> >> Now that we are starting to get 2T drives, is there any way to exceed
> >> 8T?
> >>
> >
> > I believe 16T is coming in 1.8.2 for distros where we can use ext4.
> > IIRC, that's RHEL5 at least. Unfortunately the ChangeLog(s) seem to be
> > lacking details yet.
> >
> > b.
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