Causes of an LED 611 During a sysback Network Boot

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Related documentation
Causes of an LED 611
Causes and recovery procedures

About this document

This document gives a summary of the causes and recovery procedures for an LED 611 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.

Causes of an LED 611

An LED 611 occurs when the Network File System (NFS) mount of the /usr file system from the server fails during a Sysback network boot.

Causes and recovery procedures

When the following conditions result in an LED 611, perform the solutions shown:

The /etc/exports file does not have the correct permissions for the client to mount /usr.
SOLUTION
Enter 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, add the network boot client as follows:
1. Enter:
```
    smitty sysback 
```
2. Choose one of the following:
```
    Configuration Options 
    Network Boot Configuration 
    Add or Change a Network Boot Client 
```
3. Make sure each entry is filled in correctly, as shown:
```
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)    [] 
```
4. Verify by entering the following command:
```
    exportfs 
```
  Look for the line starting with /usr. Make sure the client host name is included on the line.
The /etc/exports file does not have an entry for /usr.
SOLUTION
Enter the following command:
```
    exportfs 
```
If there is no entry for /usr in the /etc/exports file, follow the steps in the "Solution" section of step 1.
The following error message may occur when adding the network boot client:
```
Configuring network boot for client... thumper.aix.dfw.ibm.com
    /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 
```
The preceding messages indicate that the client has been configured but you must correct the problem with the export function before booting the client.
1. Enter:
```
    exportfs 
```
  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 is shown below:
```
    /usr/sys/inst.images -rw 
    /usr/lpp             -root=mars,access=mars 
```
  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. See step b.
2. Enter the following command to remove /usr/lpp from the /etc/exports file.
```
    /usr/sbin/rmnfsexp -d /usr/lpp  -B 
```
3. Re-add the network boot client as described in step 1.
4. Verify by entering the following command:
```
    exportfs 
```
  Look for the line starting with /usr. Make sure the client host name is included on the line.
This could be a defect that existed in sysback.obj 3.3.1.x - 3.3.3.5. It is fixed with sysback.obj 3.3.3.17.

In the U.S., updates of Sysback are available by calling 800-225-5249. Ask to speak with the Sysback Marketing Team. Outside the U.S., contact your AIX sales representative.

Install the new version of Sysback and rebuild your boot image:
1. Enter:
```
    smitty sysback 
```
2. Choose:
```
    Configuration Options 
    Network Boot Configuration 
    Configure/Update a Network Boot Image 
```

There is a known defect in AIX 4.1.4 that affects Network Install Management (NIM) as well as Sysback network boots. This defect is fixed in the fileset levels:

APAR: IX54851

     Fileset Name         Level 
    --------------       ------- 
    bos.adt.prof         4.1.4.5 
    bos.rte.libc         4.1.4.5 
    bos.net.nfs.client   4.1.4.4 
    bos.sysmgt.quota     4.1.3.1 
    bos.net.tcp.client   4.1.4.4

If you followed all of the preceding steps and the system still hangs at an LED 611 during a network boot to Service mode, you may want to pursue further system recovery assistance from one of the following:

Local branch office
Your point of sale
Your AIX support center

All of the preceding avenues for assistance may be billable.

For reasons of time commitment and the integrity of your AIX operating system, the best alternative at this point may be to reinstall AIX.

[ Doc Ref: 90605189714760 Publish Date: Mar. 19, 2001 4FAX Ref: 8582 ]

Causes of an LED 611 During a sysback Network Boot

Contents

About this document

Related documentation

Causes of an LED 611

Causes and recovery procedures