If during the mksysb restoration process you get the error Over mounting /., you most probably have some missing filesets on the spot that should be present for the mksysb you are using or mksysb and spot you are using are not on the same level.
Solution:
The best way is to re-create the spot from the mksysb image (mksysb_server1) you are trying to restore.
The best way is to re-create the spot from the mksysb image (mksysb_server1) you are trying to restore.
Source mksysb image:
[gzaix:root:/home/root:] lsnim -l mksysb_server1
mksysb_server1:
class = resources
type = mksysb
Rstate = ready for use
prev_state = unavailable for use
location = /export/mksysb/server1.14mar2012.sysb
version = 5
release = 3
mod = 12
oslevel_r = 5300-12
alloc_count = 0
server = master
creation_date = Thu Mar 15 02:06:46 2012
Create a spot from mksysb (mksysb_server1)
Define a Resource
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
* Resource Name [/export/spot/spot_server1]
* Resource Type spot
* Server of Resource [master] +
Source of Install Images [/export/mksysb/mksysb_server1] +
* Location of Resource [/export/spot/spot_server1/] /
NFS Client Security Method [] +
NFS Version Access [] +
EXPAND file systems if space needed? yes +
Comments []
installp Flags
PREVIEW only? (install operation will NOT occur) no +
COMMIT software updates? no +
SAVE replaced files? yes +
AUTOMATICALLY install requisite software? yes +
OVERWRITE same or newer versions? no +
VERIFY install and check file sizes? No
Command: running stdout: yes stderr: no
Before command completion, additional instructions may appear below.
Creating SPOT in "/export/spot/spot_server1/" on machine "master" from "mksysb_server1" ...
Restoring files from BOS image. This may take several minutes ...
Checking filesets and network boot images for SPOT "spot_server1".
This may take several minutes ...
Command: OK stdout: yes stderr: no
Before command completion, additional instructions may appear below.
Creating SPOT in "/export/spot/spot_server1/" on machine "master" from "mksysb_server1" ...
Restoring files from BOS image. This may take several minutes ...
Checking filesets and network boot images for SPOT "spot_server1".
This may take several minutes ...
warning: 0042-001 m_mkspot: processing error encountered on "master":
0042-175 c_ch_nfsexp: An unexpected result was returned by the
"/usr/sbin/exportfs" command:
exportfs: /export/mksysb/server1.14mar2012.sysb: No such file or directory
Of course, warnings may appear but don't worry.