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Date: Thu, 13 Jan 2005 18:46:56 -0800
From: Kris Kennaway <kris@obsecurity.org>
To: Bruce Campbell <bruce@engmail.uwaterloo.ca>
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cc: Paul McKone <pdmckone@engmail.uwaterloo.ca>
Subject: Re: flock failure on NFS from 5.3 client to 4.7 server
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On Thu, Jan 13, 2005 at 09:42:55PM -0500, Bruce Campbell wrote:
>=20
> NFS server:      FreeBSD 4.7
> Old Mail server: FreeBSD 4.7, home directories mounted to NFS server
> New Mail server: FreeBSD 5.3, home directories mounted to NFS server
>=20
> After the mail server upgrade to 5.3, flock gives error "operation not su=
pported"=20
> on nfs mounted home directories.  Example:
>=20
> Jan 13 00:06:32 mail vacation[92816]: vacation: .vacation: Operation not =
supported
>=20
> output from "truss"
>=20
> open(".vacation.db",0x2,0640)                    =3D 3 (0x3)
> fstat(3,0xbfbfd350)                              =3D 0 (0x0)
> flock(0x3,0x2)                                   ERR#45 'Operation not su=
pported'
> close(3)                                         =3D 0 (0x0)
>=20
> It appears someone else has done substantially more debugging than I:
>=20
>   http://lists.freebsd.org/pipermail/freebsd-questions/2004-September/059=
777.html
>=20
> but is seemingly no further ahead.
>=20
> On our NFS server, rpc.statd is running, but rpc.lockd wasn't.  Started
> it, still no worky.  Killed it, other 4.7 clients still flock fine.

rpc.lockd needs to be running on *both* client *and* server.

4.x gets away with it because the rpc.lockd implementation does not in
fact implement locking on the client.

Kris

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