Date: Sun, 9 Nov 2008 17:53:14 +0100 From: Erik Trulsson <ertr1013@student.uu.se> To: Robert Huff <roberthuff@rcn.com> Cc: freebsd-questions@freebsd.org Subject: Re: UFS2 limits Message-ID: <20081109165314.GA89995@owl.midgard.homeip.net> In-Reply-To: <18711.2431.464472.977892@jerusalem.litteratus.org> References: <50261.1226194851@people.net.au> <20081109152835.N49145@wojtek.tensor.gdynia.pl> <18711.2431.464472.977892@jerusalem.litteratus.org>
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On Sun, Nov 09, 2008 at 11:02:07AM -0500, Robert Huff wrote: > > Wojciech Puchar writes: > > > the limit is 32765, just because link count is 2 bytes wide and > > each subdir adds two to base directory. you have to change to 2 > > level hierarchy. > > Question (for anyone who has an informed opinion): > If there any technical reason that couldn't be expanded to 32 > bits? Or is it possible but not done for historical or > policy reasons, and if so what are they? It probably could be expanded to 32 bits if that was deemed useful. Doing that would of course require re-creating any existing filesystems since the on-disk format would change, which would be a PITA for users, but certainly possible. It is rare that anybody actually encounter this limit however. I would even say that if you have more than a couple of thousand entries in a single directory, then you are probably doing something wrong. Personally I cannot think of any situation where one would actually want (let alone need) as many as 30000 or more subdirectories in a single directory. -- <Insert your favourite quote here.> Erik Trulsson ertr1013@student.uu.se
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