NFS mount issue

I have two Linux boxes, L1 and L2. L1 exports a number of directories so
that L2 can NFS mount them. One of those directories D in L1 is owned by
user U with uid N. On L2 I have the same user U, with the same uid N.

In L2 I am mounting all the directories exported by L1 (D, in particular)
from the root account. Everything's OK, with one exception: If D has
permissions drwx------ in L1, when mounted on L2 I can read its contents
when I am user U - but not if I am root.

Is it possible to export D so that, for all practical purposes, root in
L2 can have full access to D, just as root in L1 can? I am aware of the
potential security issues associated with this approach, but I want to do
this in my home network, where boxes trust each other.




Steven Jones

On Wed, 12 Apr 2006 16:16:10 +0000, Steven Jones wrote:

> I have two Linux boxes, L1 and L2. L1 exports a number of directories so
> that L2 can NFS mount them. One of those directories D in L1 is owned by
> user U with uid N. On L2 I have the same user U, with the same uid N.
>
> In L2 I am mounting all the directories exported by L1 (D, in particular)
> from the root account. Everything's OK, with one exception: If D has
> permissions drwx------ in L1, when mounted on L2 I can read its contents
> when I am user U - but not if I am root.
>
> Is it possible to export D so that, for all practical purposes, root in
> L2 can have full access to D, just as root in L1 can? I am aware of the
> potential security issues associated with this approach, but I want to do
> this in my home network, where boxes trust each other.

Oops! Found it: no_root_squash export option. Nothing like posting a
question to the net in order to get the motivation to find the solution on
one's own.