Re: Solaris 10 (x86) partition schema recommendations
From: KJ (here_at_there.net)
Date: 06/10/05
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Date: Thu, 09 Jun 2005 22:28:25 GMT
KJ wrote:
> Andrew Gabriel wrote:
>
>> In article <tv_pe.75887$VH2.46775@tornado.tampabay.rr.com>,
>> KJ <here@there.net> writes:
>>
>>> "Live upgrade" in Solaris speak only mean only upgrading from major
>>> OS version (8 to 9, 9 to 10, etc.) or is that also required to do the
>>> quarterly updates?
>>
>>
>>
>> Best way of doing both. Live upgrade first copies the OS
>> image to the spare slice, and then applies the update on
>> top of that, merging in your system's current configuration.
>> Whilst it is doing this, the system carries on running
>> normally (hence _live_ upgrade). At some convenient moment,
>> you just reboot and you then have the new release running,
>> and the only downtime was the time taken to reboot. If you
>> decide you don't like something about the upgraded system,
>> just boot the original, which is untouched by the upgrade
>> process, so you have instant fallback too. Next time a new
>> release comes out, you can do live upgrade again, but in
>> the opposite direction. You can have more than two live
>> upgrade environments if you like (just allocate the
>> appropriate number of spare slices). You don't actually
>> need to use them for upgrades either -- you can setup a
>> live upgrade environment with a copy of the OS if you want
>> to try out lots of changes, but want the option to be able
>> to abandon the effort and fall back to the original.
>>
>> Of course, Solaris can also do upgrades inplace without using
>> live upgrade, so you don't have to allow for live upgrade,
>> but I strongly suggest you do. A non-live upgrade requires
>> you to take the system down for the duration of the upgrade,
>> and you don't have the easy option of reverting back with
>> just a reboot if there's something you don't like about the
>> new system or if the upgrade goes wrong for some reason.
>>
> I've been reading and studying Solaris like mad in the past few weeks,
> but this is the first real mention I'm come across of this feature.
> Thanks! Another pretty impressive feature.
>
> However, since my use is mostly a development workstation, would I be
> able to forgo the live update slices and simply use the newer CD/DVD and
> do an offline upgrade. I'm 99% sure thats how it works, but a simple
> yes or no on the question would be very reassuring.
>
> From everything I've seen thus far, I can't wait until OpenSolaris
> comes out in order to improve the great Solaris kernel and package a
> system more friendly for casual desktop/workstation users. Not to
> mention an apt-get type of package management/repository would be ideal.
Before I get flamed, I don't mean improving the kernel per se, only
pre-bundeling it with some typical desktop userland applications and
making a more idiot-proof setup for less experienced standalone users.
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