IBM Support

Live Kernel Update Must Gather

Question/Answer


Question

What data needs to be gathered for issues with LKU, (Live Kernel Update)?

Answer

On the AIX 7.2 system that we ran the LKU on, clean up any previous snaps.
#snap -r
#cd /tmp/ibmsupt
#rm *.pax.Z

 

Run "snap -a".

 

Copy the liveupdate directory to the testcase folder.


#cd /tmp/ibmsupt/testcase
#cp /var/adm/ras/hmcauth.log .
#cp -r /var/adm/ras/liveupdate .
#cp -r /etc/liveupdate .

 

 

 

Compress the snap using the "snap -c" command.

 

Submit that snap to ECUREP.


https://www.ecurep.ibm.com/app/upload_sf


If Live Update is hung, we'll need to reboot both the Original partition and Surrogate partition with the dump option on the HMC.

In the navigation area, open Systems Management->Servers and click the managed system where the LPAR is located
In the contents area, select the LPAR
Click the Tasks button and choose Operations->Restart
Select the dump option
Click OK


Once the reboot is done on the Original partition, follow the same steps above to collect the LKU Must Gather logs along with the dump.
#snap -r
#cd /tmp/ibmsupt
#rm *.pax.Z

Run "snap -a".

Copy the liveupdate directory to the testcase folder.
#cd /tmp/ibmsupt/testcase
#cp /var/adm/ras/hmcauth.log .
#cp -r /var/adm/ras/liveupdate .
#cp -r /etc/liveupdate .

Compress the snap using the "snap -c" command.

Run the steps above on the Surrogate partition to collect the logs and the dump. We'll need to rename the snap in order to avoid the snaps overriding each other when you upload them to ECUREP.

For example:
Partition name is: clienta

Rename the snap too:
clienta.surr.snap.pax.Z

At this point, please open a pmr so IBM can help clean up the LKU on the original partition. And we'll help get the snap off the Surrogate partition once the clean up is successful.


Gather a snap of the VIO servers that are serving the 7.2 client in question. Depending on the error, the LKU operation can also create a VIO snap under /. If a snap is there, submit that VIO snap otherwise, follow these instructions to collect a VIO snap using the link below:
http://www-01.ibm.com/support/docview.wss?uid=isg3T1013064


Gather a HMC Pedbg. Instructions to collect the pedbg data are located here:
http://www-01.ibm.com/support/docview.wss?uid=nas8N1018878


Cross reference information
Product Component Platform Version Edition
AIX APARs - AIX 7.2 environment

Document information

More support for: AIX family

Component: APARs - AIX 7.2 environment

Software version: Not Applicable

Operating system(s): AIX

Reference #: T1023961

Modified date: 06 July 2018


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