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Re: collected vs distributed working copy metadata

From: Branko Čibej <branko.cibej_at_hermes.si>
Date: 2000-08-12 11:39:10 CEST

Greg Hudson wrote:
> [Regarding storing all metadata in a single file]
> Daniel Stenberg wrote:
> >> Also, this will suffer in large directories or when very many users
> >> doing operations on the same dir since all operations will use
> >> (lock) the same single file.
> Branko =?iso-8859-2?Q?=C8ibej?= wrote:
> > Not if it's a proper database, with record locking. And that's a
> > prerequisite, anyway.
> You do realize that subversion working directories have to have a
> prayer of working in an NFS-mounted filesystem, right? Relying on
> record locking is probably not a good idea.

I was thinking about database record locking, not Unix byterange
locking. Any database worh its salt will do that correctly over
NFS. If we decide to use Berkeley DB for the filesystem, we might
as well use it for the metadata in the working copy, too (that's
assuming it works correctly over NFS; if it doesn't we can't use
it for the filesystem, either).


Branko Čibej                 <branko.cibej@hermes.si>
HERMES SoftLab, Litijska 51, 1000 Ljubljana, Slovenia
voice: (+386 1) 586 53 49     fax: (+386 1) 586 52 70
Received on Sat Oct 21 14:36:06 2006

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