topic Re: NFS mount question in Operating System - Linux

NFS mount question

MikeL_4 — Wed, 19 Jul 2006 12:47:22 GMT

We have an extry in /etc/exports file for a directory, where a couple of servers have full access to everything under this directory.

Now a have a request for subdirectory under the base that we want everyone to have read access to, but exportfs won't allow an entry complaining that the parent-directory is already exported.

Is there any way to get around this ?

Re: NFS mount question

Ivan Ferreira — Wed, 19 Jul 2006 13:42:06 GMT

You can export a child directory of an exported parent. Also, if you allow rw access to the parent and suppose that you could export the child as ro, you still have rw acces via the parent directory.

The rw, and ro access in this case is controlled by the file system permissions.

You can mount any subdirectory of an exported file system, if you exported /filesystem, you can run:

mount server:/filesystem/subdir /mnt/nfs

Without problems, but as I said before, remove the write permissions for the files/directories that should not have write access.

Re: NFS mount question

MikeL_4 — Wed, 19 Jul 2006 14:01:28 GMT

Thanks

Re: NFS mount question

Ivan Ferreira — Wed, 19 Jul 2006 14:33:25 GMT

My answer was:

You can export a child directory of an exported parent.

And should be:

You "can't" export a child directory of an exported parent.

But the rest of the answer is correct.