patch and kernel change in one reboot

[Paul Wasik]

Hello,

I'd like to update a 'reboot required' kernel setting (dbc_max_pct) and then install a 'reboot required' patch bundle. can I update the dbc_max_pct (creating a new kernel, for next boot) and then have the patch install work against the 'next boot' kernel? or do I have to conduct two seperate efforts?

thanks

[spex]

Hi Paul,

Yes, this should work. However, if something goes wrong after the reboot, you've now got two potential causes, instead of just one.

PCS

[James R. Ferguson · Accepted solution]

Hi Paul:

Technical Knowledge Base document KBRC00012410 details the procedure necessary to coincidently apply patches that require a reboot and tune kernel parameters in one pass.

Regards!

...JRF...

[Steven E. Protter]

Shalom,

Great doc from JRF.

You don't state your OS. If you are using 11.23 you may need to use kctune and slightly different syntax to make this happen.

SEP

[Paul Wasik]

Hey Guys,

thanks for the quick responses, which help direct my researching. I'm on 11.11.

It seems that I can just 'set' the kernel parameter manually (kmtune -s) and then instal the Patch Bundle. here you can see that I changed the variables with a simple command, my next step being the patch install:
root@saturn: kmtune -s dbc_min_pct=1 -s dbc_max_pct=10
root@saturn: kmtune -q dbc_min_pct -q dbc_max_pct
Parameter Current Dyn Planned
=================================================
dbc_min_pct 5 - 1
dbc_max_pct 50 - 10

seems pretty simple and about what the noted Document suggests. do you agree this is a valid approach?

[Paul Wasik]

Hi,

I tried my suggestion above which didn't work. I tried the procedures in above noted document which did work. thanks for the help.

[Paul Wasik]

close.

[Denver Osborn]

cool! I wrote that doc after someone called the RC and asked the same question. This would make you the 2nd person to actaully use it. :)

-denver