On 02/04/2014 03:48 AM, David Brown wrote: > On 04/02/14 09:41, Francis Moreau wrote: >> Are both v0.9 and v1.0 MD put their metadata at the end of a partition >> ? I thought only v0.9 would do that. > > Yes, it is only 0.9 format that is at the end of the partition. This > means that a plain raid1 mirror (with as many disks as you like, as long > as they are simple mirrors and not raid10) looks just like a normal > partition for other tools. As long as it is read-only, tools that are > not raid-aware can use it. For example, grub and lilo can happily boot > from a 0.9 metadata raid1 array just like from a normal partition. > (Actually, modern grub understands a lot of md raid formats.) The same > thing should apply to EFI, as long as it does not attempt to write to > the partition. No, both 0.9 and 1.0 have metadata after the data area. v1.1 and 1.2 have their metadata before the data area. I've been using v1.0 on my /boot mirrors for a long time. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
