nfs server

[KAD]

[KAD]

[mad_ady]

[KAD]

actually you can see in the the log ubuntu tried v4 and fails, then tries v3 and still fails
manually specify vers does not change the behavior
I tried vers=3 and vers=2

but another interesting observation
when I boot SMP nfs-server appears fine

after I attempt to mount from ubuntu
nfs on webend goes red
and pidof nsfd does not return any result and nothing in process list
and if I retry test from ubuntu
showmount and rpcinfo shows that the nfs server has indeed stopped

then if I try to restart the nfs server on SMP, output looks fine
but on ubuntu side showmount starts working again
rpcinfo -p 192.168.1.25 is working again
rpcinfo -u 192.168.1.25 nfs shows that this was not correctly restarted "not available"
rpcinfo -u 192.168.1.25 mountd is working again

on smp side pidof nsfd indeed does not return any result, so nfsd service can not be restarted for some reason

[kroetkroet]

Hello KAD,

maybe a strange suggestion, but what about mounting the nfs share on the SMP itself? Does not make any sense in practical use, but you might see interesting stuff popping up in the logs?

[KAD]

that is an odd idea, it would be interesting to see those logs

however, late last night, I crashed my dev system
boot loops
frozen firmware updates
emergency flash recovery screen
etc ...

I've recovered the system already, but will need to re-add all the nfs bits to the firmware
before I can continue testing
and for now, gotta go to work

[KAD]

well re-did the last nights work

still getting same error message

[kroetkroet]

I'm out of odd ideas then

I remember smdb to have an extensive log-level system, that might exist on nfsd too?

[mad_ady]

I would try the following (being out of ideas as well):

1. A packet capture between the client and the SMP. You should see the NFS messages - if they are of any help
2. Running the mount command with strace to see the system calls it does. It might show something useful (like the point where it fails)...

[KAD]

packet captures and strace all good idea's

I've been trying to weed through google search regarding nfs issues
unfortunately, it's littered with mostly noob questions with mount syntax errors and exports issues

I think I did find something to look into
hosts.allow file, apparently can control which daemons and services have permissions and which ip's or networks have permission to access the services
but I don't think that would explain all the behavior I'm seeing
if it was permissions, I would expect mounting on client side to fail, but not the nsfd process to die on the server side

another interesting test I did last night
I tried the binaries from debian-squeeze.img
those present an entirely different problem
no error messages, everything shows completed successfully
and even if I turn on debugging for rpc.nfsd it completes without error
but then if I check to see if it's actually running, it's not

another possibility I can try to to cross compile the nfs-utils myself instead of trying to use existing binaries