[ydl-gen] YDL 4.1 Installation: Creating software RAID

[Derick Centeno]

Hi Sascha:

Considering a PC partitioning scheme on a PPC system defeats the 
purpose of why you are using a PPC system in the first place.  Leave 
that stuff for Intel based architectures.
Technically arguments can go one way or another, but sometimes these 
nuances between architectures matter in getting things done and in 
examining why some attempts or "work arounds" may just not be worth it. 
  So just master the PPC stuff you need, keep your PC experience in the 
background and if there are relationships or points of similarity from 
an engineering standpoint then note that.  However, one to one 
correspondence, ie. what technical methods worked in one system may not 
work optimally with another.  If you think Apple's stuff is hairy, you 
may have missed the technical documents IBM provides regarding similar 
setups for their RS/6000 using AIX.  Not that material is real 
engineering!

No one I've met would try to apply badmington rules in baseball, and 
likewise it is between PC/Intel engineering schemes and PPC engineering 
schemes.  The difference between the architectures and how they access 
peripherals could fill books; that's another story.

Onto something a bit more useful to you.  TSS does provide this 
information regarding RAID setup in the ydl.net service.  You can read 
more about the offering here:

http://www.terrasoftsolutions.com/support/solutions/y-hpc/

On Jan 19, 2006, at 1:50 PM, Sascha Frey wrote:

> Hi!
>
> I'm currently trying to install YDL 4.1 on my G5.
> I've got two identical disks installed.
> I want to set up my root partition on a software RAID level 1 array.
>
> I leaved /dev/sda1 & /dev/sdb1 untouched (apple partition map). I 
> created an apple bootstrap aprtition (1 MByte) on every drive 
> (/dev/sda2 & /dev/sdb2).
> After this I tried to create a partition with filesystem type Linux 
> RAID. After setting up size & file system type I get an error message: 
> "Could not allocate requested partitions: requested FileSystemType 
> needs a flag that is not available.."
> I can't create raid partitions.
>
> How can I create a software RAID array?
>
> I only want to have Linux on this box. Maybe I need to switch to PC 
> partitioning scheme?
> Partitioning on a Mac seems to be a little bit weired to me...
>
>
> Thanks,
>
> Sascha
>
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