Date: Sun, 18 Dec 2005 13:45:37 +0100 From: Oliver Brandmueller <ob@e-Gitt.NET> To: Fabian Keil <freebsd-listen@fabiankeil.de> Cc: freebsd-stable@freebsd.org Subject: Re: NFS UDP mounts on RELENG_6? Message-ID: <20051218124537.GK34429@e-Gitt.NET> In-Reply-To: <20051216163031.6d5ce939@TP51.local> References: <20051216143936.GF34429@e-Gitt.NET> <20051216163031.6d5ce939@TP51.local>
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--17pEHd4RhPHOinZp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi. On Fri, Dec 16, 2005 at 04:30:31PM +0100, Fabian Keil wrote: > Oliver Brandmueller <ob@e-Gitt.NET> wrote: >=20 > > I'm experiencing problems when trying to mount NFS filesystems from a > > RELENG_6 server (FreeBSD hudson 6.0-STABLE FreeBSD 6.0-STABLE > > #0: Wed Dec 14 16:59:55 CET 2005 =20 > > root@hudson:/usr/obj/usr/src/sys/NFS-32-FBSD6 i386) > > to either 5.4-STABLE or 6-STABLE clients. mounting works fine, but=20 > > afterwards the access to the filesystem on the client stalls. As soon > > as I mount the FS with a TCP mount everything works as expected. > >=20 > > The mounts worked fine on UDP when the server was 5.4-STABLE. There > > is just a plain GigE switch involved, no firewalls or routing. > >=20 > > Anyone else experiencing those problems or having an idea? >=20 > I just copied some files (<200 MB) from a NFS Server running >=20 > FreeBSD africanqueen.local 6.0-STABLE FreeBSD 6.0-STABLE > #5: Thu Dec 15 19:31:12 CET 2005 > fk@africanqueen.local:/usr/obj/usr/src/sys/AFRICANQUEEN i386 >=20 > without problems. My client runs FreeBSD 5.4, I use GigE as well, > but no switch. Which kind GigE Interface do you use? I'm currently checking different=20 things. I have another RELENG_6 machine where everything works fine,=20 which has a slightly older system at the moment. Luckily it's still in=20 the testing phase, so I'm currently updating and see if everything is=20 still working after update. This one has bge interfaces (and is amd64). The machine with the problem has em interfaces and I've got the feeling=20 the problem is related to the interface. When doing a tcpdump at the=20 time the mount stalls there's an interesting effect: On the client I see=20 outgoing NFS requests only. The tcpdump on the server shows the incoming=20 requests from the client AND outgoing answers from the server, which=20 don't show up at the client then. I have no other GigE NIC around to put into the original server and it=20 will take some time to do the patching in the datacenter and set up a=20 monitoring port (dunno if the switch is smart enough after all to do=20 that) to sniff from an independent machine. I'll keep you posted. - Oliver --=20 | Oliver Brandmueller | Offenbacher Str. 1 | Germany D-14197 Berlin | | Fon +49-172-3130856 | Fax +49-172-3145027 | WWW: http://the.addict.de/ | | Ich bin das Internet. Sowahr ich Gott helfe. | | Eine gewerbliche Nutzung aller enthaltenen Adressen ist nicht gestattet! | --17pEHd4RhPHOinZp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDpVnxiqtMdzjafykRAlJxAJ9n9Sa6bg8qGEuq7MJ4R2UPBd2/uACfcr7r oXGHjQLHSK5QVKAa55kpihY= =SKux -----END PGP SIGNATURE----- --17pEHd4RhPHOinZp--
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