B700F120 LED server hung

AIX server migrated from AIX5.3 to AIX6.1 on 9117-mmb frame and the server hangs at the LED B700F120

B700F120

B700F120

Explanation

Platform firmware detected an error

 

Response

The platform is unable to support the requested architecture options requested by the operating system via ibm,client-architecture-support interface.

 

Solution

6100-01 is not supported on a 9117-mmb. So if installing the AIX operating

 

system on a 9117-mmb frame, please make sure you go with one of these options.

AIX 6.1 with the 6100-04 Technology Level and Service Pack 3, or later.
AIX 6.1 with the 6100-03 Technology Level and Service Pack 5, or later.

AIX 6.1 with the 6100-02 Technology Level and Service Pack 8, or later.

 If you have used lpp and spot of 6100-01 level, please update the lpp and spot to the above mentioned TL levels and perform the migration.

                      By doing so, you can bypass this LED hung of server during the reboot of the server after the OS migration

How to list files in alphabetical order in a directory

We know how to list the files by sorting with time, and using long list options, but anyone knows how to list based on the alphabetical order.

Here is the simple command to do that :



cd to directory and then

#  ls -ltr | awk ' { print $9 }' | sort -d

This will list files based on alphabet order.

find oslevel of the clone rootvg

We usually know how to find the oslevel of a server, but if we want to find the oslevel of the cloned rootvg that exists in the disk, then its very simple.

Using the below blvset command, you can find the oslevel in the clone vg/disk.





/usr/lpp/bosinst/blvset -d /dev/hdisk0  -g level

      Where hdisk0 is part of the cloned rootvg as below.

# lspv | grep rootvg
 hdisk0          00z301dce111df74                    altinst_rootvg
 hdisk1          00c503d45e50dr04                    rootvg          active

• If we need few more details on the cloned disk, then below command will be useful. If we need TL level just need to check the date when clone performed and we know when the TL or SP upgrade happened on the server. so based on that we can decide the TL level.

 /usr/lpp/bosinst/blvset -d /dev/hdisk0  -g menu
locale: C C C C C C
console:
blvname: hd5
targ_dev: /dev/hdisk0
root_fsattr: hd4:jfs2:hd8
timestamp: Fri Jun 28 12:57:06 2013
padstring: 7.1 pad string:@%$#~!~~!~#$%@

dlpar not working between from hmc

Usually, if DLPAR fails due to below reason, its always problem with the rmc connection, which depends on RSCT daemons.

Error :

"A RMC network connection to the partition is not present. Verify the network settings on the partition and the HMC. If you select OK you will have to restart the partition for the resource changes to take effect."




Solution :

The very easy best thing, that we can do for making DLPAR to work is restart RMC along with the rsct group daemons, with the help of below three commands and wait for some 5 min, before you again test the dlpar capability.

# /usr/sbin/rsct/bin/rmcctrl -z
# /usr/sbin/rsct/bin/rmcctrl -A
# /usr/sbin/rsct/bin/rmcctrl -p

# lssrc -a | grep rsct
 

  - IBM.DRM should be in active state

Go back to the HMC restricted shell command prompt

# lspartition -dlpar
the partition shows correct hostname & IP
Active<1> and Decaps value 0x3f

The above values mean that the partition is capable of a dlpar operation.

If above things don`t work even you wait for 5 to 10 min, please execute the above commands followed by therecfgct command. Below is the command.

 
/usr/sbin/rsct/install/bin/recfgct

Wait for sometime and give a try. It should work for sure if the problem is with the RMC, rsct related otherwise the problem may be because of firewall between your hmc and the server.

How to delete a file using inode

If the part of file name has some invalid charecters then we may face difficulty in deleting that file, so the best option to delete the file would be using inode number.

Below is the command for the same:

 # find /directory -inum [inode-number] -exec rm -i {} \;

Script to perform FTP in background

Usually to transfer files from Fix Central to the servers, while downloading to your server it takes lot of time, so during this period we should make sure your network not to disconnect.

To avoid this problem, we can use a script to run this file transfer in background so that, there will be no need for us to be attentive towards the ftp transfer.


Here is the scripttttt




#!/bin/sh
USERNAME="anonymous"
PASSWORD="anonymous"
SERVER="FTP SITE SERVER NAME"
 
# local directory to pickup *.tar.gz file
FILE="/ecc/hsb/H60987058"
 

# login to remote server
ftp -n -i $SERVER <user $USERNAME $PASSWORD
cd $FILE
mget *.*
quit
EOF


- Just put these entries in a file and can be executed as below in background.

Save the content to the file  --> auto-ftp.ksh
Command :   nohup auto-ftp.ksh > /tmp/ftp.out &

- Note: The command has to be executed in a directory where you need to place the download the files!!!

how to increase the queue depth on the vio client

To change the queue_depth on the hdisk device:

To change the queue depth values, the hdisk should be free from I/O operataions. So



1. stop I/O on the device hence unmount all the filesystems.
- varyoffvg group name

> or  rmdev -l hdisk


2. To change the queue_depth

- chdev -l hdisk -a queue_depth=

- varyonvg or cfgmgr -l hdisk

3.  You can change the ODM using the -P option and rebooting.

- chdev -l hdiskX -a queue_depth=20 -P

     shutdown -Fr