Fedora-21 vs NFS

[Jonathan Ryshpan]

I have just upgraded amito, the client from Fedora-20 to Fedora-21.  The
server, weather, is still running Fedora-20.  After the upgrade, an
attempt by amito to nfs mount a filesystem on weather fails with an
access denial by by weather.  Before the upgrade, everything worked
fine.

It looks like the mount should succeed, since showmount indicates that
the export from weather is OK.  Nevertheless it fails.  How can I debug
this?  I'm pretty much an NFS newbie.

Here is the relevant info:

[root at amito jonrysh]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sun Jan  4 19:54:47 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more
info
#
/dev/mapper/fedora00-root                 /                       ext4
defaults        1 1
UUID=7e3eb9f4-44eb-4120-8593-5570190feded /boot                   ext4
defaults        1 2
/dev/mapper/fedora00-home                 /home                   ext4
defaults        1 2
/dev/mapper/fedora00-Windows              /srv/c                  vfat
shortname=winnt 0 0
/dev/mapper/fedora00-swap                 swap                    swap
defaults        0 0

# NFS Mounts
weather:/                                 /srv/weather            nfs4
users,defaults  0 0
weather:/var                              /srv/weather/var        nfs4
users,defaults  0 0
[root at amito jonrysh]# ls -l /srv
total 36
drwxr-xr-x. 11 root root 32768 Dec 31  1969 c
drwxr-xr-x.  2 root root  4096 Jan 16 22:01 weather
[root at amito jonrysh]# showmount -e weather
Export list for weather:
/home amito.gateway.2wire.net
/     amito.gateway.2wire.net
[root at amito jonrysh]# mount /srv/weather
mount.nfs4: access denied by server while mounting weather:/

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