[Cialug] Can't Edit Permissions on NFS Share

[Scott Yates]

Ouch, that is a painful thing to have to discover.  Thanks for sharing the
solution!

On Mon, Oct 24, 2016 at 4:27 PM, Todd Walton <tdwalton at gmail.com> wrote:

> >
> > On Tue, Oct 4, 2016 at 11:13 AM, Andrew Denner <linux-list at upeke.com>
> > wrote:
> >
> >> Do the nfs logs show any useful information?
> >>
> >> Also the NFS Howto section on troubleshooting may help:
> >> http://nfs.sourceforge.net/nfs-howto/ar01s07.html#pemission_issues
> >>
> >> On Tue, Oct 4, 2016 at 10:28 AM, Todd Walton <tdwalton at gmail.com>
> wrote:
> >>
> >> > I have an NFS share exported from a remote server. It's sharing from
> the
> >> > server with options "rw,no_root_squash,no_all_squash,secure".
> "secure"
> >> > means "Allow Connections from ports below 1024". I have this share
> >> mounted
> >> > locally with options
> >> > "rw,vers=3,rsize=1048576,wsize=1048576,hard,proto=tcp,
> >> > timeo=600,retrans=2,sec=sys".
> >> >
> >> > Seems all good. But when I try to change permissions on a file that I
> >> own I
> >> > get "Permission denied". Permissions are currently 755, I am the
> owner,
> >> and
> >> > I'm changing to 775. But permission denied.
> >> >
> >> > I can't figure out what's going wrong where. Any suggestions?
> >> >
> >> > --
> >> > Todd
> >>
> >
> Figured it out. The filesystem permissions had been set by an old version
> of Windows. As in, Windows 2000. Apparently either Windows 2000 doesn't
> properly set permissions, i.e. it's buggy, or it's using a bygone standard.
> So even though the owner was UID such-and-such, permissions didn't allow a
> user with that UID to actually own the files.
>
> I would have expected that a write to NFS is a write to NFS, but I guess
> I'd be wrong.
>
> The solution was to get on the old Windows server and modify the
> permissions to open it up, then the other clients could do their thing.
>
> --
> Todd
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