Date: Mon, 19 Dec 2005 01:01:34 -0800 (PST) From: Jon Dama <jd@ugcs.caltech.edu> To: Fabian Keil <freebsd-listen@fabiankeil.de> Cc: freebsd-stable@freebsd.org, Oliver Brandmueller <ob@e-Gitt.NET> Subject: Re: NFS UDP mounts on RELENG_6? Message-ID: <Pine.LNX.4.53.0512190055270.2649@lira.ugcs.caltech.edu> In-Reply-To: <20051218165029.6aa75b7b@TP51.local> References: <20051216143936.GF34429@e-Gitt.NET> <20051216163031.6d5ce939@TP51.local> <20051218124537.GK34429@e-Gitt.NET> <20051218165029.6aa75b7b@TP51.local>
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A very critical question here is the network topology. UDP NFS _cannot_ be used across switches where the ports are operating at different speeds--unless the UDP packet size is to be smaller than MTU. Be sure and verify that every link between the server and the client are operating at the same speed. -Jon On Sun, 18 Dec 2005, Fabian Keil wrote: > Oliver Brandmueller <ob@e-Gitt.NET> wrote: > > > On Fri, Dec 16, 2005 at 04:30:31PM +0100, Fabian Keil wrote: > > > Oliver Brandmueller <ob@e-Gitt.NET> wrote: > > > > > > > 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 > > > > root@hudson:/usr/obj/usr/src/sys/NFS-32-FBSD6 i386) > > > > to either 5.4-STABLE or 6-STABLE clients. mounting works fine, > > > > but 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. > > > > > > > > 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. > > > > > > > > Anyone else experiencing those problems or having an idea? > > > > > > I just copied some files (<200 MB) from a NFS Server running > > > > > > 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 > > > > > > without problems. My client runs FreeBSD 5.4, I use GigE as well, > > > but no switch. > > > > Which kind GigE Interface do you use? > > Client: > fk@TP51 ~ $pciconf -lv| grep em0 -A 2 > em0@pci2:1:0: class=0x020000 card=0x05491014 chip=0x101e8086 rev=0x03 > hdr=0x00 vendor = 'Intel Corporation' > device = '82540EP Gigabit Ethernet Controller (Mobile)' > > Server: > fk@africanqueen ~ $pciconf -lv| grep re[01] -A 2 > re0@pci0:9:0: class=0x020000 card=0x816910ec chip=0x816910ec rev=0x10 > hdr=0x00 vendor = 'Realtek Semiconductor' > device = 'RTL8169 Gigabit Ethernet Adapter' > -- > re1@pci0:10:0: class=0x020000 card=0x601b182d chip=0x816910ec rev=0x10 > hdr=0x00 vendor = 'Realtek Semiconductor' > device = 'RTL8169 Gigabit Ethernet Adapter' > > re0 is made by Vivanco, re1 is a Sitecom card. > > Fabian > -- > http://www.fabiankeil.de/ >
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