[parted-devel] [PATCH 1/2] Add nonfs partition type 0xda (#1263835)

[Brian C. Lane]

On Fri, Oct 02, 2015 at 01:01:59PM -0400, Phil Susi wrote:
> On 9/30/2015 7:06 PM, Brian C. Lane wrote:
> > mdraid arrays with metadata >= 1.0 should not use the raid (0xfd)
> > autoassemble type, this adds a new partition type that can be used
> > without triggering side effects.
> 
> Is this really needed?  What is wrong with the default partition id?  If
> this is really needed, why don't we support it on GPT as well?
> 

https://bugzilla.redhat.com/show_bug.cgi?id=1118065 has a pile of
discussion on it.

What it amounts to is that on msdos partitioned disks mdadm only wants
0xfd to be used for version 0.90 arrays which the kernel can
autoassemble, for 1.x arrays some other type needs to be used.

GPT doesn't need it because it has never supported autoassembly.

-- 
Brian C. Lane | Anaconda Team | IRC: bcl #anaconda | Port Orchard, WA (PST8PDT)