Best means of upgrade

[Bill Davidsen]

Patrick Bartek wrote:
> --- On Sat, 3/13/10, Bill Davidsen <davidsen at tmr.com> wrote:
> 
>> I have a server running a 32 bit
>> release and some critical VMs, so I really 
>> don't want to mess it up. It also has an old 64 bit (FC6)
>> release which I get to 
>> via chain loader from the grub in 32 bit. I want to upgrade
>> the 64 bit (which I 
>> don't use) to the FC13 pre stuff from a daily spin.
>>
>> The config is thus, 32 bit boot is in a raid-1 array, as is
>> the 64 bit boot. 
>> Those are based on primary partitions. Then there is a
>> raid-6 array with LVM on 
>> it, providing /home, and Root32 and Root64 LVs. I want to
>> put the latest 64 bit 
>> on the array for /boor64 and the LV for /Root64. I do *NOT*
>> want to hose the 32 
>> bit or MBR!
>>
>> My choices are:
>> 1 - try to do an upgrade from FC6 to FC13 over the 64 bit
>> install
> 
> Don't even bother with this option.  It will fail bigtime.  Clean install.
> 
>> 2 - do a fresh fc13 install, also over the 64 bit old
>> stuff
> 
> This is the best option.  Install F13's grub on F13's partition.  The 32-bit MBR chainload should continue to work without modification.
> 
>> 3 - do it on another machine, too likely to hose the
>> production stuff
> 
> If you just want to play with F13, this is the safest way or do it in a VM.
> 
Performance of x86_64 in emulation is leisurely to say the least, doing it in a 
VM isn't practical. Reread the 32 and 64 bit parts above, the server is 32 bit 
so I run the same software on all machines. I do want to play a bit with 64, the 
last time I tried it I found no measurable benefit over PAE, I can live with a 
64GB memory limit. ;-)

-- 
Bill Davidsen <davidsen at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot