Date: Thu, 21 Nov 2002 11:55:54 -0500 (EST) From: Jason Carroll <jecarrol@digitas.harvard.edu> To: freebsd-fs@freebsd.org Subject: Maximum filesystem size Message-ID: <20021121110057.U11066-100000@digitas.harvard.edu>
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Hi everyone--
Paul Anderson posed this question on the list several months ago, but
I didn't see an answer to it.
I'm interested in creating a filesystem larger than the 1 terabyte
"soft limit" indicated in the FreeBSD FAQ (question 3.29). The FAQ
claims:
"For ffs filesystems, the maximum theoretical limit is 8 terabytes
(2G blocks), or 16TB for the default block size of 8K. In
practice, there is a soft limit of 1 terabyte, but with
modifications filesystems with 4 terabytes are possible (and
exist)."
Anyone have any experience with this or know what modifications this
might entail?
I'd also like to hear anyone's thoughts on what kind of problems
(performance or more serious) might be created with such a large
filesystem.
In more detail, I'm trying to create a 2TB filesystem on an external
SCSI disk array. I believe SCSI has a 2TB limit which I'm trying to
get as close as possible to.
Thanks,
Jason Carroll
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