Re: I missed another memo

See thoughts in line......

For the record I would NEVER bring down the host partition without first bringing down the guest partitions. This is a fluke because bonehead wasn't paying attention and got lucky. What we are debating here is 'fun' not anywhere near 'best practice!'

On 5/18/2011 7:41 AM, rob@xxxxxxxxx wrote:

Ok. Now we come down to the pro's and con's of bringing down your guested
partitions first. Let me toss out a couple of questions.

1 - If the IPL of the hosting partition applies some ptf's applying to
partition hosting, could negative ramifications occur?

IN theory yes but only if this changes the way the disks are presented to the 'hostee'. If that's the case seems like you'd have bigger fish to fry at that point.

2 - If the power down of the hosting partition also includes powering down
the whole unit to apply some non concurrent firmware could negative
ramifications occur?

*FATAL. Because then you've killed the guest partition. Although luckily you must initiate this intentionally. The firmware won't accept updates or restart if other partitions are running and of course our guest partition is still running here.

3 - If you bring the hosting partition down to a restricted state and try
to save '/QFPNWSSTG' will undesirable results occur?

Not likely. Although it should be assumed if you ever restore that and then attempt to IPL the guest partition it will at the very least be an Abnormal IPL because you didn't quiesce the guest first so lots of stuff could be 'in flight'.

4 - If while the hosting partition is down you replace a cache card and/or
a disk drive could negative ramifications occur? Keeping in mind that, if
done properly, then nothing negative would have been experienced on the
hosting partition.

Nope. So long as the system stays running and the guest partition happily waits you'd be good.

5 - If you bring this whole system down this way and leave it down for a
length of time could negative ramifications occur? Perhaps long enough to
ship your system from one city to another?

*FATAL because when the entire system comes down the guest partition crashes hard.

- Larry "DrFranken" Bolhuis

Rob Berendt