md raid autodetection on mac partitions

Hi!

It took me some time to discover that there is no provision in the mac parition handling code for autodetection of md raid arrays.

Is there any particular reason why this isn't implemented?

I've now added a new partition type 'Linux_raid_autodetect', which can be used for md autodetect.

Please consider inclusion of this patch.

--
- Harald Welte <[email protected]> http://www.gnumonks.org/
============================================================================
Programming is like sex: One mistake and you have to support it your lifetime

@@ -4,6 +4,10 @@
  *  Code extracted from drivers/block/genhd.c
  *  Copyright (C) 1991-1998  Linus Torvalds
  *  Re-organised Feb 1998 Russell King
+ *
+ *  2004-08-05 Harald Welte <[email protected]>:
+ *  	- Add support for md-raid autodetection to make md-raid bootable
+ *	  (Partition type "Linux_raid_autodetect")
  */
 
 #include <linux/config.h>

@@ -110,6 +114,9 @@
 					goodness--;
 			}
 
+			if (strcasecmp(part->type, "Linux_raid_autodetect") == 0)
+				state->parts[slot].flags = 1;
+
 			if (goodness > found_root_goodness) {
 				found_root = blk;
 				found_root_goodness = goodness;

No. raid autodetection is deprectaed, we don't want it for more
partiton types.

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Oh well. I guess I'm the only user who likes to boot his machine without building some initrd - especially since this never works out of the box with any vendor-supplied tools on any distribution I've tried so far.

If autodetection is deprecated, will we at least see some kernel boot option, where one could specify which partitions to use?

--
- Harald Welte <[email protected]> http://www.gnumonks.org/
============================================================================
Programming is like sex: One mistake and you have to support it your lifetime

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Hi Harald, just found this patch, sorry for the delay.

Why just not "Linux_raid" ?

Ben.

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/