On Sun, 24 May 2015, Another Sillyname wrote:
But reading this..... https://raid.wiki.kernel.org/index.php/RAID_superblock_formats#The_version-1_Superblock_Format it makes a sound argument for the metadata superblock being at the beginning of the drive.......in a nutshell the kernel can 'construct' the md device easier if the metadata is at the beginning....as well as data resilience issues in the case of a crash.
I don't see how you have any choice in case of /boot. I am a strong supporter of v1.2 superblock (4k into the partition) as can be seen from the discussion about this some years back, but in the case of /boot when the boot loader needs to access files on /boot before the raid is started, I don't see how you have a choice. So stay away from v0.90, but v1.0 has the same functionality apart from where the superblock is placed.
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