nfs-server re-exporting mapped network drives

Sat Mar 13 01:00:00 GMT 2004

On Fri, 12 Mar 2004, Smith, Gene wrote:

> Dave Korn wrote:
>
> >> -----Original Message----- From: cygwin-owner On Behalf Of Smith, Gene Sent: 12 March 2004 15:38
> >
> >> The file nfs-server-2.2.47-2.README states:
> >>
> >> "If you want your mount and NFS daemons to re-export mapped network
> >> drives, you will need to run them under an account other than Local
> >> System, and start both daemons with the '-r' option to enable
> >> re-exporting."
> >>
> >> I was able to "install" the daemons using the -r option with my
> >> usual login account (which also works for mapping network drives).
> >> However when I try to "start" them in the services gui I get an
> >> error stating "the program terminated unexpectedly" and the windows
> >> event log is no more helpful.
> >>
> >> I don't have a problem if I install/start the daemons without -r
> >> under the default "LocalSystem" rather than my own account.
> >>
> >> Is this a possible bug in the nfsd/mountd daemons or is it actually
> >> rejecting my account at start-time? (I get no complaints when I
> >> enter my uid/password+password.) If it it rejecting my account,
> >> what type of permissions do I need to be able to do this?
> >>
> >> cygcheck attached.
> >>
> >> Thanks, -gene
> >
> >
> > It's most likely that the programs are actually starting OK but
> > erroring out almost at once.  You haven't tried the obvious
> > experiments yet: what happens when you install them *with* -r under
> > LocalSystem?  What happens when you install them *without* -r under
> > your usual login account?  You've changed two things at one time: the
> > command line flags, and the account under which it runs.  You'll have
> > to revert one of them to find out which of them caused the problem.
> >
> > Having said that, it's likely to be a Win ACL/privs problem.  If you
> > edit your local security policy to enable auditing of failures for
> > all events, you may well get some useful information in your event
> > viewer (security log) next time you try and start the server.  It
> > will certainly show up if the daemons are trying something that
> > requires privileges enabled that they don't have.
> >
> >
> > cheers, DaveK
>
> When I do -r with LocalSystem, all daemons start and I can mount as
> expected on remote computer, but can't see the mapped drive (which I
> have mounted on the computer running nfs-server into a new directory off
> / as described in the cyg/nfs readme.
>
> Running "mount -m" on the nfs-server computer all show -s
> (system/global) mounts.
>
> When I run without -r and use my usual NT account, I get the same result
> as running with -r and my usual NT account. Daemons fail to start.
>
> I enabled the security audit log but the only time I see a failure there
> is when I intentionally put in a bad password when prompted. Otherwise,
> no security errors when using my own account.
>
> I tried installing/starting portmap with my nt account and it would not
> go at all until I put it back to LocalSystem. (I have had no problems
> starting portmap until I tried this.)
>
> I do see a bit more detail in the "application log" for nfsd and mountd
> when they fail to start under my account. They both produce 2 log
> entries (4 total) when they fail (see attached). I have included the
> ones for nfsd. The ones for mountd are very similar so I did not include
> them.
>
> I notice that the app log refers to /var/log files. In /var/log the
> nfsd, portmap and mountd log files are owner/group = SYSTEM/root. Could
> this be significant? The only one containing data is nfsd.log but
> nothing in it seem to pertain to my problem, since the data only went
> in, apparently, when it was working right (with LocalSystem account).
>
> Any more ideas?
>
> -gene
>
>
> Event Type:     Error
> Event Source:   nfsd
> Event Category: None
> Event ID:       0
> Date:           3/12/2004
> Time:           2:07:26 PM
> User:           SEA\SMITED
> Computer:       04J005
> Description:
> The description for Event ID ( 0 ) in Source ( nfsd ) cannot be found.
> The local computer may not have the necessary registry information or
> message DLL files to display messages from a remote computer. The
> following information is part of the event: nfsd : PID 2320 : starting
> service `m' failed: redirect_fd: open (1, /var/log/nfsd.log): 13,
> Permission denied.

Hmm, this one should be pretty obvious -- a "chmod a+w /var/log/nfsd.log"
should fix this right up.
	Igor

> Event Type:     Error
> Event Source:   nfsd
> Event Category: None
> Event ID:       0
> Date:           3/12/2004
> Time:           2:07:27 PM
> User:           SEA\SMITED
> Computer:       04J005
> Description:
> The description for Event ID ( 0 ) in Source ( nfsd ) cannot be found.
> The local computer may not have the necessary registry information or
> message DLL files to display messages from a remote computer. The
> following information is part of the event: nfsd : PID 2336 : starting
> service `nfsd' failed: execv: 1, Operation not permitted.

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