Using autofs to mount NFS shares

[Robert Citek]

Greetings all,

How can I configure autofs to mount exactly as if I had mounted the
filesystem manually?

Here's a example of manually mounting an NFS share:

# mount -o ro 127.0.0.1:/tmp/shared.out/ /tmp/nfs.share/

# cat /tmp/nfs.share/hw.txt
hello, world

# mount | grep nfs.share
127.0.0.1:/tmp/shared.out/ on /tmp/nfs.share type nfs (ro,addr=127.0.0.1)

# umount /tmp/nfs.share/


Here is the same process using autofs:


# grep nfs /etc/auto.master
/- /etc/auto.nfs

# grep nfs /etc/auto.nfs
/tmp/nfs.share/ -ro 127.0.0.1:/tmp/shared.out/

# /etc/init.d/autofs start

# cat /tmp/nfs.share/hw.txt
hello, world

# mount | grep nfs.share
/tmp/shared.out on /tmp/nfs.share type none (rw,bind)


Although the NFS share is mounted to the correct mountpoint via
autofs, the share is mounted read-write even though the options in the
map file /etc/auto.nfs specify read-only (-ro). According to the
docs, this should work[1]. What am I missing?

Using Ubuntu 10.04 with autofs5. Any pointers appreciated.

[1] https://help.ubuntu.com/community/Autofs

Regards,
- Robert
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