NFS exports do not show up in /proc/fs/nfs/exports
 

Hey there,

I installed Debian on my NAS and I installed nfs to share the files, but I cannot mount anything over nfs with the it. it seems that I dont get the exports right.

I added the IP to the hosts.allow, I added it to the exports.
to make it easier, shananigen has the IP 192.168.10.33 and is the server
debian has the IP 192.168.1.34 and is the client

is there a problem if I go across subnets?

anyway, here we go

shananigen:/etc# cat exports
#
/home/gerard 192.168.1.34(rw,sync,no_subtree_check,root_squash)
/home/gerard/Sound 192.168.1.34(rw,sync,no_subtree_check,root_squash)
/home/gerard/Progs 192.168.1.33(rw,sync,no_subtree_check,root_squash)

then I do exportfs -rav

shananigen:/etc# exportfs -rav
exporting 192.168.1.33:/home/gerard/Progs
exporting 192.168.1.34:/home/gerard/Sound
exporting 192.168.1.34:/home/gerard

shananigen:/etc# exportfs
/home/gerard 192.168.1.34
/home/gerard/Sound
192.168.1.34
/home/gerard/Progs
192.168.1.33

shananigen:/etc# showmount -e
Export list for shananigen:
/home/gerard/Progs 192.168.1.33
/home/gerard/Sound 192.168.1.34
/home/gerard 192.168.1.34

but still it doesnt show up in /proc/fs/nfs/exports

shananigen:/etc# cat /proc/fs/nfs/exports
# Version 1.1
# Path Client(Flags) # IPs

I have put a line in fstab that looks like this

192.168.10.33:/home/gerard /home/gerard/Sound nfs rw,user,noauto 0 0

and when I do want to mount it it goes like this:

gerard@debian:~$ mount Sound/
mount.nfs: 192.168.10.33:/home/gerard failed, reason given by server: Permission denied

on the server rpcinfo -p gives:

shananigen:/etc# rpcinfo -p
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 59855 status
100024 1 tcp 44706 status
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100021 1 udp 50243 nlockmgr
100021 3 udp 50243 nlockmgr
100021 4 udp 50243 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 tcp 44735 nlockmgr
100021 3 tcp 44735 nlockmgr
100021 4 tcp 44735 nlockmgr
100005 1 udp 46727 mountd
100005 1 tcp 57545 mountd
100005 2 udp 46727 mountd
100005 2 tcp 57545 mountd
100005 3 udp 46727 mountd
100005 3 tcp 57545 mountd
shananigen:/etc#

and on the client:

debian:/home/gerard# rpcinfo -p
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 42452 status
100024 1 tcp 51989 status
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100021 1 udp 34847 nlockmgr
100021 3 udp 34847 nlockmgr
100021 4 udp 34847 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 tcp 39760 nlockmgr
100021 3 tcp 39760 nlockmgr
100021 4 tcp 39760 nlockmgr
100005 1 udp 45107 mountd
100005 1 tcp 54604 mountd
100005 2 udp 45107 mountd
100005 2 tcp 54604 mountd
100005 3 udp 45107 mountd
100005 3 tcp 54604 mountd
debian:/home/gerard#

why doesnt the exports show up in /proc/fs/nfs/exports?

Thanks for your help

/proc/fs/nfs/exports contains information about what filesystems are exported to actual client (individual, not subnet or whatever) at the moment. Once you mount shared NFS directory on client it will show you entry on server side.
i.e
Normal user can't mount share directory. so use sudo command or run as root user.
As your export file configuration /home/gerard directory is exported for only 192.168.1.34 IP. so cross check once again.

Hope this help

Hey there again,

thanks for the reply. It helped understanding that this is not the porblem, so I looked further.

one problem was, that I am crossing two switches, so the IP from the client doesnt show as the requestee IP on the server. Looking into the syslog file of the server I found the following

Sep 7 22:00:27 shananigen mountd[3027]: refused mount request from 192.168.10.35 for /home/gerard (/home/gerard): illegal port 60781

So first the sever thinks that the client is connecting from 192.168.10.35. the second thing is that the server doesnt like the port.

Changing the IP in the server exportfs and putting 'insecure' in to allow all ports, it works like a charm.

thanks for the help.