Date: Sat, 12 May 2007 12:53:18 +0200 From: Philippe Laquet <stom@free.fr> To: Tom Judge <tom@tomjudge.com> Cc: freebsd-questions@freebsd.org Subject: Re: Any FBSD Filesystem with Mandatory Locks? Message-ID: <46459C9E.9000500@free.fr> In-Reply-To: <46459523.3040801@tomjudge.com> References: <4644F7D1.2090106@free.fr> <46459523.3040801@tomjudge.com>
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Tom Judge a écrit : > Philippe Laquet wrote: >> >> Dear All, >> >> I a trying to get HAVP (it works almost well, great software!) but I >> also need to use the streaming option and it needs a FS mounted with >> mandatory locks. I did not found any option with UFS(2) and also >> tried with ext2fs loaded but the mount_ext2fs does not support "-o >> mand" ... Any idea?... >> >> >> My config : FBSD 6-STABLE >> GENERIC Kernel >> HAVP 0.85 (tuned makefile to compile the with STREAM function) >> >> Tried with : >> mdconfig -a -t malloc -s32m >> mount_ext2fs -o mand /dev/md0 /tmp/havp (the "mand" option is not >> recognized) >> > > I don't think that FreeBSD has mandatory file locks, I believe that > all locks are advisory. I may be wrong but this is what the section > on file/descriptor locking in "The Design And Implementation of the > FreeBSD Operating System" seemed to suggest, this may have changed > since 5.2 tho. > > Tom > OK - Thanks Tom, I will take a look on it, I think that HAVP was first developped on and for GNU/Linux, that may explain the need of a Mandatory (derived from SysV?) locks... I am currently looking on the source code of HAVP and check is a FreeBSD Patch could be done. Kind Regards,
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