Re: B20003200 -- MIDRANGE-L

Didnt this all start because of the IOA for the tapes?
Unfortunately, shutting down gracefully a system doesnt guarantee that the
cache is flushed, only setting it as dead or shutting down the partition
from the HMC explicitly telling it you want to remove a cache battery pack
does that.
i've heard IBM outsourced engineering support but this is ridiculous. Did
they at least TRY to rollback the IOA changes? i mean, even having a dirty
controller usually lets you do a B-M IPL, worst case a D-M ipl followed by
clearing the cache (that usually doesnt damage the objects).
I concur with Paul, if you configure the alternate IPL source in the
partition's profile to be the Tape controller a D type IPL should work.
Best Regards,

On Sun, Apr 21, 2013 at 8:11 PM, Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>wrote:

Mike,

What model iSeries, what os, and what controller. If controllers were
swapped without clearing cache, that would be an issue.
If you mount last system save, you can IPL from tape.

Paul

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:
midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Smith, Mike
Sent: Sunday, April 21, 2013 7:01 PM
To: midrange-l@xxxxxxxxxxxx
Subject: B20003200

To answer a couple previous questions, yes it is an HMC managed machine.
I do need to IPL off CD if I'm trying to use the fiber attached drives to
recover.

Ok, so another (third) IBM technician is on site and was able to get the
IPL from CD and verified that the disks looked ok but the RAID controller
that they put in earlier is having a problem. They are stating that (I'm
getting it third hand) that the controller has data in it's cache and that
in order to clear it, we'll have to wipe the partition. That seems
ridiculous. I'm not sure why they can't disconnect the battery and let the
cache drop, reconnect and plug it back in.

With all the used parts out there, wouldn't this be happening all the
time? The just got another controller drove in from Austin but they think
they will have the same problem.

My machine was powered down gracefully before they started work so it
should be fine. Now I'm relying on one copy of a backup on tape drives
that were giving me problems.. that's what they whole maintenance was about.

So, to anyone still around. Does that seem likely, that the cache on this
replacement controller is going to cause me to reload my system?

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