GNU bug report logs - #17994
Linux RAID MBR type code

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Package: parted;

Reported by: Chris Murphy <lists <at> colorremedies.com>

Date: Fri, 11 Jul 2014 00:43:02 UTC

Severity: normal

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Chris Murphy <lists <at> colorremedies.com>
To: bug-parted <at> gnu.org
Subject: Linux RAID MBR type code
Date: Thu, 10 Jul 2014 17:58:26 -0600

This is in master branch.

libparted/labels/dos.c
98	#define PARTITION_LINUX_RAID	0xfd


This type code and metadata version 0.9 are long deprecated. Parted lacks support for the "non-fs data" partition type code 0xda, which is what should be used for mdadm metadata 1.x partitions.

man 8 mdadm:
"When  creating  a partition based array, using mdadm with version-1.x metadata, the partition type should be set to 0xDA (non fs-data).  This type selection allows for greater precision since using any other [RAID auto-detect (0xFD) or a GNU/Linux  partition (0x83)], might create problems in the event of array recovery through a live cdrom."

https://raid.wiki.kernel.org/index.php/Autodetect


Chris Murphy
This bug report was last modified 10 years and 342 days ago.

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