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Old 11-28-2007, 09:56 PM   #1
utahnix
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Registered: Dec 2006
Location: Utah, USA
Distribution: openSUSE
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NFS & idmapd ... nobody owns everything


I've got two SUSE boxes - one server, one workstation. I have a NFSv4 export.

I can connect successfully (r/w) via autofs using the following autofs mount parameters:

fs2 -fstype=nfs4,rw,hard,intr,sec=sys,proto=tcp,fsid=0,port2049 10.0.0.12:/

In this case, fs2 (10.0.0.12) is the server where the export is located.

I have verified idmapd is running on both hosts. I have verified both have the same "domain" (as defined in /etc/resolv.conf). Both have synchronized clocks.

But It appears the "nobody" user and "nobody" group own the files on the workstation.

It works for a while and then something breaks it. I'm not sure what to think. The last time it was a domain mis-match. But what's funny is that it appears to be a labeling thing... permissions are calculated correctly, regardless of who the owning group/user appears to be on the workstation.

Ideas?
 
Old 11-29-2007, 07:50 PM   #2
BrianK
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Registered: Mar 2002
Location: Los Angeles, CA
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Forgive me if I'm over simplyfying, but are you using centralized authentication? If not, are the UID's GID's the same on both machines? If not, that's probably the source of your problem.

Again - not trying to dumb this down too far, but because I don't know your experience level...

if:

on the server user "bob" has UID of 501
on the workstation user "bob" has UID of 505

then when bob writes to the server from the worstation, as long as he stays on the workstation, all his writes will look like he wrote them. Once he jumps on the server and looks at those files, they will no longer appear to be owned by him because on the server, he's 501, but the user that wrote the files is 505 (which may map to "nobody" or "jill" or whatever - it could be different on every machine that looks there)

Hope that helps.

Last edited by BrianK; 11-29-2007 at 07:51 PM.
 
  


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