This document summarizes the causes and recovery procedures for an LED 610 during a Sysback network boot. The information in this document has been verified for AIX Versions 3.2, 4.1, 4.2 and 4.3. It has also been verified for sysback.obj 3.3.3 and sysback.rte 4.1.x.x.
Condition:
An NFS mount of the /usr file system from the server is hanging during a Sysback network boot.
Possible causes:
Execute the following command:
exportfs
Look for the line starting with /usr. Make sure the client host name is included on the line.
Example
/usr -ro, root=node1,node2
In the preceding example, only node1 and node2 are exported to NFS mount
/usr. If
your client's host name is not included on that line, then add the network boot
client using the smitty sysback command as follows:
Choose the following options in sequence:
Make sure each entry is filled in correctly.
Example
Execute the following command to verify the correct client host name:
Look for the line starting with /usr. Make sure the client host name
is included on the line.
Solution
Execute the following command:
If there is no entry for /usr in the /etc/exports file, then
follow the
steps in the solution in the preceding section.
Watch for this error message when you are adding the network boot client (the
example is for
configuring a network boot for client thumper.aix.dfw.ibm.com):
If you get this error, the client has been configured but you must correct
the problem with the
export before booting the client.
Execute the following command:
If a subdirectory for /usr that is not a file system is already in the
/etc/exports file, then you cannot export the parent directory
/usr.
Example output from the exportfs command
In this example /usr/sys/inst.images is its own file system but
/usr/lpp
is still part of /usr file system. You cannot export /usr until
you remove
/usr/lpp from the /etc/exports file.
To remove /usr/lpp from the /etc/exports file, execute the
following
command:
Then re-add the network boot client by following the steps for that process in the preceding section.
Verify the addition by executing the following command:
Look for the line starting with /usr. Make sure the client host name
is included on the line.
An update of Sysback may be ordered by calling 1-888-426-4343 (U.S. Only),
select option 3 at the voice menu, or visit http://sysback.services.ibm.com for
more information.
Install the new version of Sysback, and rebuild your boot image using
smitty,
as follows:
Choose these options in sequence:
smitty sysback
Configuration Options
Network Boot Configuration
Add or Change a Network Boot Client
Client network adapter type [token-ring]
Client platform/kernel type [rspc]
Client hostname [mars.aix.dfw.ibm.com]
Server IP address [9.19.129.186]
Client gateway address (optional) [9.19.141.241]
Client subnet mask (optional) [255.255.240.0]
Client adapter hardware address (optional) []
exportfs
exportfs
/usr ro,root=thumper.aix.dfw.ibm.com
Starting NFS and BOOTP services ..
exportfs: /usr: sub-directory (/usr/lpp) already exported
/usr not found in /etc/exports
exportfs
/usr/sys/inst.images -rw
/usr/lpp -root=mars,access=mars
/usr/sbin/rmnfsexp -d /usr/lpp -B
exportfs
smitty sysback
Configuration Options
Network Boot Configuration
Configure/Update a Network Boot Image
If you followed all of the preceding steps and the system still stops at an LED 610 during a network boot to Service mode, you may want to further pursue system recovery assistance from one of the following:
For reasons of time and the integrity of your AIX operating system, the best
alternative at this point may be to reinstall AIX.
[ Doc Ref: 90605189714758 Publish Date: Nov. 06, 2000 4FAX Ref: 8579 ]