[SOLVED] mount.nfs: an incorrect mount option was specified

Message

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 7:10 pm

I can not seem to make nfs to work.
I'm following instructions from:
http://en.gentoo-wiki.com/wiki/NFS/Server

 cat /etc/exports examples
# /etc/exports: NFS file systems being exported.  See exports(5).

/home/joseph 10.0.*.*(async,rw,no_subtree_check)

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cat /etc/fstab
10.0.0.103:/home/joseph/   /home/joseph/mnt/syscon2/    nfs   defaults,users,noauto    0 0

nfs-utils is compiled without "nfsv4"
It starts OK, but when I try to mount it

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mount -t nfs 10.0.0.103:/home/joseph /home/joseph/mnt/syscon2
mount.nfs: an incorrect mount option was specified

or

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mount /home/joseph/mnt/syscon2/
mount.nfs: an incorrect mount option was specified

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 7:23 pm

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rpcinfo -p 10.0.0.103
   program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100024    1   udp  39346  status
    100024    1   tcp  49886  status
    100005    1   udp  43549  mountd
    100005    1   tcp  47665  mountd
    100005    2   udp  54395  mountd
    100005    2   tcp  46436  mountd
    100005    3   udp  47309  mountd
    100005    3   tcp  40399  mountd
    100003    2   tcp   2049  nfs
    100003    3   tcp   2049  nfs
    100003    2   udp   2049  nfs
    100003    3   udp   2049  nfs
    100021    1   udp  40997  nlockmgr
    100021    3   udp  40997  nlockmgr
    100021    4   udp  40997  nlockmgr
    100021    1   tcp  33762  nlockmgr
    100021    3   tcp  33762  nlockmgr
    100021    4   tcp  33762  nlockmgr

bernd_b · Post by **bernd_b** » Sat Apr 23, 2011 7:25 pm

Just a wild guess:
I added "vers=3" to my mount options in /etc/fstab.
At least it gave me luck.

http://forums.gentoo.org/viewtopic-t-84 ... t-nfs.html

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 7:33 pm

I've change fstab entry to:

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10.0.0.103:/home/joseph/   /home/joseph/mnt/syscon2/    nfs   nfsvers=3,users,noauto    0 0

and I get:

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mount /home/joseph/mnt/syscon2/
mount.nfs: access denied by server while mounting 10.0.0.103:/home/joseph/

krinn · Post by **krinn** » Sat Apr 23, 2011 7:40 pm

nfs-utils change behavior at some version that i forget, now it default to always try nfs4 first, the nfsv4 flag is there to add dependies for nfsv4 usage, but still nfsv4 will be use when querying a mount

try mount -t nfs 10.0.0.103:/home/joseph /home/joseph/mnt/syscon2 -v -o nfsvers=3,vers=3

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 9:47 pm

krinn wrote:nfs-utils change behavior at some version that i forget, now it default to always try nfs4 first, the nfsv4 flag is there to add dependies for nfsv4 usage, but still nfsv4 will be use when querying a mount

try mount -t nfs 10.0.0.103:/home/joseph /home/joseph/mnt/syscon2 -v -o nfsvers=3,vers=3

No go:

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mount -t nfs 10.0.0.103:/home/joseph /home/joseph/mnt/syscon2 -v -o nfsvers=3,vers=3
mount.nfs: timeout set for Sat Apr 23 15:48:26 2011
mount.nfs: trying text-based options 'nfsvers=3,vers=3,addr=10.0.0.103'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 10.0.0.103 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 10.0.0.103 prog 100005 vers 3 prot UDP port 54976
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 10.0.0.103:/home/joseph

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 9:55 pm

bernd_b wrote:Just a wild guess:
I added "vers=3" to my mount options in /etc/fstab.
At least it gave me luck.

http://forums.gentoo.org/viewtopic-t-84 ... t-nfs.html

I've seen this link, it doesn't help.
Do you mean fstab entry like this:

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10.0.0.103:/home/joseph   /home/joseph/mnt/syscon2    nfs   vers=3,nfsvers=3,users,noauto    0 0

Still same error:

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mount -v /home/joseph/mnt/syscon2/
mount.nfs: timeout set for Sat Apr 23 15:57:31 2011
mount.nfs: trying text-based options 'vers=3,nfsvers=3,addr=10.0.0.103'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 10.0.0.103 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 10.0.0.103 prog 100005 vers 3 prot UDP port 54976
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 10.0.0.103:/home/joseph

Joseph_sys · Post by **Joseph_sys** » Sat Apr 23, 2011 10:27 pm

SOLVED,
/etc/exports should be:
/home/joseph 10.0.0.0/255.255.0.0(async,rw,no_subtree_check)

The correct setting if somebody will encounter the same problem:

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fstab:
...
10.0.0.103:/home/joseph   /home/joseph/mnt/syscon2    nfs   nfsvers=3,users,noauto    0 0

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cat /etc/exports 
/home/joseph 10.0.0.0/255.255.0.0(async,rw,no_subtree_check)