Server: FreeBSD 9.2-RC1, ZFS
Client: FreeBSD 9.0-RELEASE-p3
Filesystem is exported with "alldirs,maproot=root".
On the client, I can chown a file to any user but nobody.
client# touch foo
client# ls -l foo
-rw-r--r-- 1 root staff 0 Aug 20 11:18 foo
client# chown chris foo
client# ls -l foo
-rw-r--r-- 1 chris staff 0 Aug 20 11:18 foo
client# chown root foo
client# ls -l foo
-rw-r--r-- 1 root staff 0 Aug 20 11:18 foo
client# chown nobody foo
No name and/or group mapping for uid,gid:(65534,-1)
chown: foo: Operation not permitted
nobody exists on both client and server, with UID 65534 in both places. It looks like this is something to do with nfsv4's user mapping (nfsuserd), but I'm not finding good documentation on how that works. I've read hints that nobody is handled specially.
