[Lustre-discuss] NFS Export Issues

[Andreas Dilger]

On 2010-07-15, at 08:33, William Olson wrote:
> Somebody, anybody?  I'm sure it's something fairly simple, but it 
> escapes me, assistance would be greatly appreciated!

I can't comment, since my NFS re-exporting (to a MacOS client) is working fine.  Hopefully soon I can stop doing that and use the native Mac client, but I don't think my wife is willing to use alpha software yet.


Have you restarted the NFS server after changing the exports?
Are you sure the permissions are correct?
Have you verified that exporting a non-lustre filesystem from this server works?

My /etc/exports is:
/myth           192.168.10.160(rw,async,insecure) 

>> Hello All,
>> 
>>    Having trouble exporting a lustre mount with NFS..
>> 
>> When mounting the NFS export on client:
>> [root at nfsclient /]# mount 192.168.100.77:/mnt/lustre_mail_fs
>> /mnt/lustre  (have tried nearly every possible switch that I can think
>> of, don't think it's related to "how" I attempt to mount)
>> mount: 192.168.100.77:/mnt/lustre_mail_fs failed, reason given by
>> server: Permission denied
>> 
>> Server shows log:
>> Jul 14 10:24:28 lustreclient mountd[9868]: authenticated mount request
>> from 192.168.100.2:720 for /mnt/lustre_mail_fs (/mnt/lustre_mail_fs)
>> Jul 14 10:24:28 lustreclient mountd[9868]: can't stat exported dir
>> /mnt/lustre_mail_fs: Permission denied
>> 
>> Everything from a NFS service/config perspective appears to be
>> functional, and I can indeed export a local filesystem without errors...
>> 
>> Additionally, I have no trouble using the mounted lustre filesystem, I
>> can even rsync data from the nfs client to the lustre file system on the
>> nfs server..
>> 
>> Any clues?  Your knowledge and experience would be greatly appreciated!
>> See below for config specifics..
>> 
>> Thanks!
>> Billy Olson
>> 
>> Server/Client Specifics:
>> Lustre Client/NFS Server: 192.168.100.77
>> CentOS release 5.4 (Final)
>> lustre-client-modules-1.8.3-2.6.18_164.11.1.el5_lustre.1.8.3
>> lustre-client-1.8.3-2.6.18_164.11.1.el5_lustre.1.8.3
>> Kernel:  2.6.18-164.11.1.el5
>> 
>> /etc/exports:
>> /mnt/lustre_mail_fs 192.168.100.0/24(ro,insecure)
>> I've tried various other options all the same outcome, these seemed like
>> the best to test with though..
>> 
>> [root at lustreclient ]# rpcinfo -p
>>     program vers proto   port
>>      100000    2   tcp    111  portmapper
>>      100000    2   udp    111  portmapper
>>      100024    1   udp    645  status
>>      100024    1   tcp    648  status
>>      100011    1   udp    702  rquotad
>>      100011    2   udp    702  rquotad
>>      100011    1   tcp    705  rquotad
>>      100011    2   tcp    705  rquotad
>>      100003    2   udp   2049  nfs
>>      100003    3   udp   2049  nfs
>>      100003    4   udp   2049  nfs
>>      100021    1   udp  37527  nlockmgr
>>      100021    3   udp  37527  nlockmgr
>>      100021    4   udp  37527  nlockmgr
>>      100003    2   tcp   2049  nfs
>>      100003    3   tcp   2049  nfs
>>      100003    4   tcp   2049  nfs
>>      100021    1   tcp  52555  nlockmgr
>>      100021    3   tcp  52555  nlockmgr
>>      100021    4   tcp  52555  nlockmgr
>>      100005    1   udp    716  mountd
>>      100005    1   tcp    719  mountd
>>      100005    2   udp    716  mountd
>>      100005    2   tcp    719  mountd
>>      100005    3   udp    716  mountd
>>      100005    3   tcp    719  mountd
>> 
>> [root at lustreclient ]# exportfs -v -r
>> exporting 192.168.100.0/24:/mnt/lustre_mail_fs
>> 
>> NFS Client: 192.168.100.2
>> 
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> 
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Cheers, Andreas
--
Andreas Dilger
Lustre Technical Lead
Oracle Corporation Canada Inc.