Re: [PATCHES] Fix for large file support (nonsegment mode support)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Zeugswetter Andreas OSB SD" <Andreas(dot)Zeugswetter(at)s-itsolutions(dot)at>
Cc: "Peter Eisentraut" <peter_e(at)gmx(dot)net>, pgsql-patches(at)postgresql(dot)org, "Zdenek Kotala" <Zdenek(dot)Kotala(at)sun(dot)com>, "Andrew Dunstan" <andrew(at)dunslane(dot)net>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] Fix for large file support (nonsegment mode support)
Date: 2008-03-11 14:48:59
Message-ID: 19622.1205246939@sss.pgh.pa.us
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"Zeugswetter Andreas OSB SD" <Andreas(dot)Zeugswetter(at)s-itsolutions(dot)at> writes:
> Exactly, e.g. AIX is one of those. jfs (not the newer jfs2) has an
> option
> to enable large files, which is not the default and cannot be changed
> post crfs.
> And even if it is enabled, jfs has a 64 Gb filesize limit !
> Anybody know others that support large but not huge files ?

Yeah, HPUX 10 is similar --- 128GB hard maximum. It does say you
can convert an existing filesystem to largefile support, but it has
to be unmounted.

These examples suggest that maybe what we want is not so much a "no
segments ever" mode as a segment size larger than 1GB.

regards, tom lane

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