NFSv3 not supported ?

NFSv3 not supported ?

[Thanos Chatziathanassiou]

Hi list, lots of head-banging on this one:
Some time ago, I asked what this message meant:
``NFS: NFSv3 not supported warning: mount version older than kernel''
since my mount was most certainly up-to-date.

Trond answered that I did not specify ``include NFSv3 client support''
when compiling the kernel.

Last night, I decide to upgrade to kernel 2.4.19, when I specifically
remembered to include NFSv3 support, when asked. However, on the next
reboot, upon mount, the same message appeared.

As I figured out just now, the message will appear (although I'm not
sure if it really means what it says) if NFS support is compiled inside
the kernel, but won't appear, if NFS support is compiled as a module
(again, I don't really know if it is indeed NFSv3, but it says it is).

Can anyone explain this ? Is NFSv3 meant to be only compiled as a module
?

Regards,
Thanos Chatziathanassiou




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Re: NFSv3 not supported ?

[Trond Myklebust]

>>>>> " " == Thanos Chatziathanassiou <tchatzi@arx.gr> writes:

     > Can anyone explain this ? Is NFSv3 meant to be only compiled as
     > a module ?

No. Looks like you've screwed up somewhere when you did the
compilation. Did you for edit .config by hand? If so, did you remember
to do 'make oldconfig' before compiling?

Cheers,
  Trond


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NFSv3 not supported!

[Jeffrey Layton]

I'm trying to mount a filesystem from an nfs server. The server is
running 2.6.6 kernel, and I've tried 2.6.6 and 2.6.7-rc2 on the client.
The client keeps reporting the following error when I try to mount using
nfsvers=3.
 
% sudo mount -o udp,intr,soft,nfsvers=3 nfsserver01:/services/NFS/home
/nfstest
NFSv3 not supported!
mount: wrong fs type, bad option, bad superblock on
nfsserver01:/services/NFS/home,
       or too many mounted file systems

I can mount using v2 without a problem, and I can mount a filesystem
from a 2.4 kernel using nfsvers=3 without a problem. Also, a different
machine running a 2.6.6 kernel can mount this filesystem without an
issue. The only problem is this one client. Can anyone point me in the
right direction to diagnose this?

NFSv3 is definitely enabled on the client:

laytonj@tesla:~% grep NFS /boot/config-2.6.7-rc2
CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
# CONFIG_NFS_V4 is not set
CONFIG_NFS_DIRECTIO=y

I'm stumped! Any help is appreciated.

My current thinking is that this problem is related to the performance
issue I was seeing before. Once I get this worked out, I'll recheck my
NFS performance.

Thanks,
-- Jeff




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Re: NFSv3 not supported!

[Jeffrey Layton]

Ack! Stupid me -- I found my problem. I already had the filesystem
mounted as a v2 filesystem. Maybe time for another cup of coffee for me.
:-)
Sorry!
Jeff




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