unable to export nfs shares

[stephaneguedon]

hello

I can't export my nfs shares since my reboot two days ago.

my server :

***@lug:/etc$ uname -a
Linux lug 2.6.24-21-server #1 SMP Mon Aug 25 18:06:43 UTC 2008 i686
GNU/Linux

nfs doesn't export anything but seems to work properly :

***@lug:~$ sudo sh /etc/init.d/nfs-kernel-server status
[sudo] password for stephane:
nfsd running
***@lug:~$ sudo sh /etc/init.d/nfs-common status
all daemons running
***@lug:~$ sudo exportfs -r
***@lug:~$

my /etc/exports :

# /etc/exports: the access control list for filesystems which may be
exported
# to NFS clients. See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes hostname1(rw,sync) hostname2(ro,sync)
#
# Example for NFSv4:
# /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt)
# /srv/nfs4/homes gss/krb5i(rw,sync)
#

/home/public 192.168.0.6(rw,sync,no_subtree_check)
/home/ftp 192.168.0.6(rw,sync,no_subtree_check)
/home/www 192.168.0.6(rw,sync,no_subtree_check)

of course, I had not change anything... (the logiciels and their settings
are the sames...)
the only difference is that the reboot has launched a different kernel
release, but the operating system seems to be clear, without dependencies
rupture...


thanks for your help if you can !

[J.O. Aho]

Post by stephaneguedon
I can't export my nfs shares since my reboot two days ago.
Linux lug 2.6.24-21-server #1 SMP Mon Aug 25 18:06:43 UTC 2008 i686
GNU/Linux

Does your portmap run?

[stephaneguedon]

Post by J.O. Aho

Post by stephaneguedon
I can't export my nfs shares since my reboot two days ago.
Linux lug 2.6.24-21-server #1 SMP Mon Aug 25 18:06:43 UTC 2008 i686
GNU/Linux

Does your portmap run?

Yes, it runs ! I have restarted it, and the nfs server
(nfs-kernel-server), and nothing appear in nfs...

[J.O. Aho]

Post by stephaneguedon

Post by J.O. Aho

Post by stephaneguedon
I can't export my nfs shares since my reboot two days ago.
Linux lug 2.6.24-21-server #1 SMP Mon Aug 25 18:06:43 UTC 2008 i686
GNU/Linux

Does your portmap run?

Yes, it runs ! I have restarted it, and the nfs server
(nfs-kernel-server), and nothing appear in nfs...

What about /etc/host.allow /etc/host.deny ? any changes on those?

If it had been nfs4 shares, I would have looked at those rpc services, think
nfs3 uses rpc.statd and rpc.mountd, can be good to see if they are running, in
worst case kill those and start the manually to see if they generate some erro
message.

[stephaneguedon]

Post by J.O. Aho
What about /etc/host.allow /etc/host.deny ? any changes on those?
If it had been nfs4 shares, I would have looked at those rpc services, think
nfs3 uses rpc.statd and rpc.mountd, can be good to see if they are running, in
worst case kill those and start the manually to see if they generate some erro
message.

Nothing has changed for them ! I will try to start manually this.

[stephaneguedon]

Le Sat, 25 Oct 2008 10:27:14 +0200, stephaneguedon

Post by stephaneguedon

Post by J.O. Aho
What about /etc/host.allow /etc/host.deny ? any changes on those?
If it had been nfs4 shares, I would have looked at those rpc services, think
nfs3 uses rpc.statd and rpc.mountd, can be good to see if they are running, in
worst case kill those and start the manually to see if they generate some erro
message.

Nothing has changed for them ! I will try to start manually this.

When I try to run rpc.mountd, I get this :

***@lug:/etc$ sudo rpc.mountd
Cannot register service: RPC: Unable to receive; errno = Connection refused
***@lug:/etc$

[J.O. Aho]

Post by stephaneguedon
Le Sat, 25 Oct 2008 10:27:14 +0200, stephaneguedon

Post by stephaneguedon

Post by J.O. Aho
What about /etc/host.allow /etc/host.deny ? any changes on those?
If it had been nfs4 shares, I would have looked at those rpc
services, think
nfs3 uses rpc.statd and rpc.mountd, can be good to see if they are running, in
worst case kill those and start the manually to see if they generate some erro
message.

Nothing has changed for them ! I will try to start manually this.

Cannot register service: RPC: Unable to receive; errno = Connection refused

The little I know about this problem, this message appears if portmap isn't
working and you are trying to start the other services.
I would suggst you uninstall your portmap and then reinstall it freshly from
the repository, and see if that solves the problem (not sure how to use deb to
check if a file in a packages has been changed, thats why I suggest ther
reinstall).

[stephaneguedon]

Post by J.O. Aho

Post by stephaneguedon
Le Sat, 25 Oct 2008 10:27:14 +0200, stephaneguedon

Post by stephaneguedon

Post by J.O. Aho
What about /etc/host.allow /etc/host.deny ? any changes on those?
If it had been nfs4 shares, I would have looked at those rpc services, think
nfs3 uses rpc.statd and rpc.mountd, can be good to see if they are running, in
worst case kill those and start the manually to see if they generate some erro
message.

Nothing has changed for them ! I will try to start manually this.

Cannot register service: RPC: Unable to receive; errno = Connection refused

The little I know about this problem, this message appears if portmap isn't
working and you are trying to start the other services.
I would suggst you uninstall your portmap and then reinstall it freshly from
the repository, and see if that solves the problem (not sure how to use deb to
check if a file in a packages has been changed, thats why I suggest ther
reinstall).

I have done a reinstall (apt-get remove --purge and apt-get install...)
and /etc/exports where recreated !
But nothing works !

This is bad for nfs which I like, it is so efficient comparely to samba !
Should I make a bug report ?

How could I increase looging to debug the server ?

thanks !

[J.O. Aho]

Post by stephaneguedon
I have done a reinstall (apt-get remove --purge and apt-get install...)
and /etc/exports where recreated !
But nothing works !
This is bad for nfs which I like, it is so efficient comparely to samba !
Should I make a bug report ?

If it's something that has happen without you updating something, then it's
something that has got corrupt on your system, or enabled iptables rules that
blocks everything regarding nfs.

If you have upgraded before the reboot, then it could be some bug in nfs-utils
or the nfs server module is broken (should be visible with dmesg).

Post by stephaneguedon
How could I increase looging to debug the server ?

To increase loggins, see the man page for dmesg,

dmesg -n 9

or was it the other way around, not sure, always forget that.

[stephaneguedon]

Post by J.O. Aho

Post by stephaneguedon
I have done a reinstall (apt-get remove --purge and apt-get install...)
and /etc/exports where recreated !
But nothing works !
This is bad for nfs which I like, it is so efficient comparely to samba !
Should I make a bug report ?

If it's something that has happen without you updating something, then it's
something that has got corrupt on your system, or enabled iptables rules that
blocks everything regarding nfs.
If you have upgraded before the reboot, then it could be some bug in nfs-utils
or the nfs server module is broken (should be visible with dmesg).

***@lug:~$ dmesg|tail
[304963.902801] nfsd: last server has exited
[304963.902813] nfsd: unexporting all filesystems
[304965.669396] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state
recovery directory
[304965.677081] NFSD: starting 90-second grace period

Post by J.O. Aho

Post by stephaneguedon
How could I increase looging to debug the server ?

To increase loggins, see the man page for dmesg,
dmesg -n 9
or was it the other way around, not sure, always forget that.

I am not able to increase logging :

***@lug:~$ sudo dmesg -n 9
klogctl: Argument invalide
***@lug:~$

there is ufw, which is a firewall from ubuntu, but he was there days ago
without problems, and local network has all permissions to connect to the
server !
moreover, the problem isn't (yet) to connect to the server, but to open
and export shares !

[stephaneguedon]

Le Sun, 26 Oct 2008 10:19:06 +0100, stephaneguedon

Post by stephaneguedon

Post by J.O. Aho

Post by stephaneguedon
I have done a reinstall (apt-get remove --purge and apt-get install...)
and /etc/exports where recreated !
But nothing works !
This is bad for nfs which I like, it is so efficient comparely to samba !
Should I make a bug report ?

If it's something that has happen without you updating something, then it's
something that has got corrupt on your system, or enabled iptables rules that
blocks everything regarding nfs.
If you have upgraded before the reboot, then it could be some bug in nfs-utils
or the nfs server module is broken (should be visible with dmesg).

[304963.902801] nfsd: last server has exited
[304963.902813] nfsd: unexporting all filesystems
[304965.669396] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state
recovery directory
[304965.677081] NFSD: starting 90-second grace period

Post by J.O. Aho

Post by stephaneguedon
How could I increase looging to debug the server ?

To increase loggins, see the man page for dmesg,
dmesg -n 9
or was it the other way around, not sure, always forget that.

klogctl: Argument invalide
there is ufw, which is a firewall from ubuntu, but he was there days ago
without problems, and local network has all permissions to connect to
the server !
moreover, the problem isn't (yet) to connect to the server, but to open
and export shares !

I don't know why, but, at present, it works ! nfs had been exported
(server), and mounted on local computer (client)