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SubjectRE: 2 TB partition support
Date

>What exactly are you trying to do?

Doing testing in our lab trying to use 2.4.x and 2.6.
Trying to see how high a storage capacity can be supported
above 2TB, both in partitions and file sizes.

The limitation we have found in 2.4 is lack of 2TB support,
(using hardware raid with 2TB+ partitions).

The limitation we have found in 2.6 is lack FC HBA drivers which
are needed to support large storage capacities.

Any thoughts?


-----Original Message-----
From: Peter Chubb [mailto:peterc@chubb.wattle.id.au]On Behalf Of Peter
Chubb
Sent: Monday, November 10, 2003 7:43 PM
To: Mike Fedyk
Cc: Joseph Shamash; Peter Chubb; linux-kernel@vger.kernel.org
Subject: Re: 2 TB partition support


>>>>> "Mike" == Mike Fedyk <mfedyk@matchmail.com> writes:

> On Mon, Nov 10, 2003 at 06:12:06PM -0800, Joseph Shamash wrote:
>>
>> What is the maximum partition size for a patched 2.4.x kernel, and
>> where are those patches?

Mike> I believe it is now 16TB per block device in 2.6, and patched
Mike> 2.4.

That's right for 32-bit systems with 4k pages. For 64 bit systems the
limit is over 8 Exabytes.

You should note that software raid has smaller limits, as does the
LVM. Also the 2.4 patches have seen *much* less testing than the 2.6
mainline (except possibly on the SGI Altix).

What exactly are you trying to do?

--
Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au
The technical we do immediately, the political takes *forever*



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