On Nov 10, 2005, at 8:03 PM, Paul Hutton wrote:
Are you aware of Live Upgrade? This can minimise the downtime of
going
through an OS upgrade, and if *something dreadful happens* you can
immediately revert to the pre-exisiting configuration.
I've heard of it, but never used it. I'm terrified of doing an OS
upgrade on this machine since I had to jump through some amazing hoops
getting some major GTK-based apps running, and I'm really not looking
forward to that again. This Live Upgrade thang sounds
interesting...can you point me toward some reading material?
Given the complexity of your existing config, then I would think that
Live Upgrade is a lower risk path than experimenting with 8/03 as the
base for SRSS3.(1).
Oh ok, point well taken.
Live upgrade is documented in the Solaris Installation Guide, chapters
29 - 36:
http://docs.sun.com/app/docs/coll/214.19?
In this case the url refers to the 9 12/03 collection but you should
probably go for the latest 9/05
Ok, I will grab that stuff and give it a read. Thanks for the
pointer.
(or dare I say it, Solaris 10?)
Mmmmm, that would be nice. I would love to play with Zones.
The main pre-requisite is that the system must have a spare disk which
can be booted, or spare space and partitions on an existing disk to be
the target for the upgrade. LU copies the existing environment to spare
disk space and then provides the means to do a Solaris upgrade install
on that copy while the system is in production. It also manages which
boot environment is current.
Once you successfully do a live upgrade, you could boot from the new
environment and verify that your apps work correctly. If that's the
case, then you could proceed to upgrade SRSS.
Ahh, I understand...That sounds like an excellent setup.
This won't eliminate downtime, but it will minimise it, and provide a
fallback which can be invoked immediately.
That really sounds great. I'll pull down the docs tonight and start
reading up on it. I have a few spare drive bays in the E3500 (I moved
most of the stuff to a SAN earlier this year so that freed up a few
bays), and at least one spare drive, so that sounds good. I thank you
very much for your advice Paul, you've been a great help!
-Dave
--
Dave McGuire "You'll have to be a lot more specific than
'that
Cape Coral, FL girl last night.'" -Ted McFadden
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