Date: Wed, 9 Feb 2005 13:52:43 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Tim Traver <tt-list@simplenet.com> Cc: questions@freebsd.org Subject: Re: NFS File Locking across multiple machines Message-ID: <20050209215243.GA13823@xor.obsecurity.org> In-Reply-To: <420A6586.1000302@simplenet.com> References: <420A6586.1000302@simplenet.com>
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--9amGYk9869ThD9tj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Feb 09, 2005 at 11:33:26AM -0800, Tim Traver wrote: > Hi all, >=20 > a couple of years back, we ran into a problem with the FreeBSD NFS code= =20 > where file locks were not seen by other machines. >=20 > We use Netapp disk hardware to mount NFS filesystems to our FreeBSD=20 > systems. In the past, two different machines would not recognize locks=20 > from each other, and would sometimes cause file collisions. >=20 > From the same machine, two different processes would recognize locks=20 > without a problem. >=20 > In our experience, the Sun servers that we had also did not have any=20 > problems. This was after creating specific tests to make this determinati= on. >=20 > We reported it to the freebsd developers way back when, and have lost=20 > track as to the status of the issue. >=20 > Does anyone on this list know of the developer that was developing the=20 > NFS code ??? or know anything about the issue ??? or have an answer ??? ;) >=20 > I'd like to talk to him/her to see what the status is in the later=20 > FreeBSD 4.x series as well as 5.x In 4.x and older rpc.lockd does not implement client-side locking. This is documented in the manpage. In 5.x and later rpc.lockd does do client-side locking. Kris --9amGYk9869ThD9tj Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCCoYrWry0BWjoQKURAkvyAJ9aBK2rBszpJUZoLnfp+yzNqr9UrwCg62u7 QITU04X5ylFVA0TDvVy0F2Y= =i/x/ -----END PGP SIGNATURE----- --9amGYk9869ThD9tj--
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