I've installed NFSv4 as nfs-kernel-server. I'm slowly figuring out
how to get it to configured and working.
After a system reboot, if I try to mount an export,
mount -t nfs4 192.168.1.2:/test /mnt/test
it just "sits there", never mounting.
So I 1st check what's running,
ps ax | egrep -i "idmapd|mountd|statd|nfsd|sm-notify"
3731 ? Ss 0:00 /usr/sbin/rpc.idmapd
3732 ? Ss 0:00 /usr/sbin/rpc.idmapd
3753 ? Ss 0:00 /usr/sbin/rpc.statd --no-notify
3758 ? S< 0:00 [nfsd4]
3759 ? S< 0:00 [nfsd]
3760 ? S< 0:00 [nfsd]
3761 ? S< 0:00 [nfsd]
3762 ? S< 0:00 [nfsd]
3772 ? Ss 0:00 /usr/sbin/rpc.mountd
and that looks OK.
After some experiments, I've discovered if I CTRL-C the mount attempt
and restart the server TWICE,
service nfsserver restart
Shutting down kernel based NFS server: nfsd statd mountd
done
Starting kernel based NFS server: idmapdexportfs: Warning: /nfs/test
does not support NFS export.
mountd statd nfsd sm-notify
done
service nfsserver restart
Shutting down kernel based NFS server: nfsd statd mountd
done
Starting kernel based NFS server: idmapd mountd statd nfsd sm-notify
done
Notice that the 2nd time the "idmapd" appears to be re-started.
then repeat the mount attempt,
mount -t nfs4 192.168.1.2:/test /mnt/test
it now works.
Checking what's running again,
ps ax | egrep -i "idmapd|mountd|statd|nfsd|sm-notify"
3731 ? Ss 0:00 /usr/sbin/rpc.idmapd
3732 ? Ss 0:00 /usr/sbin/rpc.idmapd
5213 ? S<s 0:00 /usr/sbin/rpc.mountd
5216 ? S<s 0:00 /usr/sbin/rpc.statd --no-notify
5221 ? S< 0:00 [nfsd4]
5222 ? S< 0:00 [nfsd]
5223 ? S< 0:00 [nfsd]
5224 ? S< 0:00 [nfsd]
5225 ? S< 0:00 [nfsd]
It all looks the same as before. Notice that the rpc.idmapd PIDs are
the same, even though the "service nfsserver restart" 2nd time around
looked like it restarted it.
I don't really understand what the 2X nfsserver restart does. There
clearly IS an effect. And it looks like it has to do with idmapd.
I can say that
service nfsserver stop
service nfs stop
service quotad stop
service rpcbind stop
umount -a
mount -a
service rpcbind start
service quotad start
service nfs start
service nfsserver start
often gives me similar errors,
Warning: /nfs/test does not support NFS export
that go away if I make sure there's a delay after starting nfs,
service nfs start && sleep 5
service nfsserver start
Maybe there's some sort of timing problem on startup?
Any clues?
BenDJ
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