On Mon, 3 Jul 2017 17:48:52 +0300 Andrei Borzenkov <arvidjaar@gmail.com> wrote:
On Mon, Jul 3, 2017 at 5:37 PM, Wols Lists <antlists@youngman.org.uk> wrote:
Where it does matter, is you cannot *boot* off a partition on a raw raid disk. Pretty much all boot code relies on an MBR or GPT to locate the OS.
Technically it is possible by offsetting start of data when creating RAID. Then you have enough space to store anything you like, including code that can access Linux MD to "locate the OS".
I did once use raw disks for a RAID and in my case I learned it is all too easy to overwrite the start of it by accident. So afterwards I use a formatted disk, with a small partition at the beginning and a small partition at the end, and a large partition in the middle of an exactly defined size to hold the RAID. The small partitions can be used for system backups or the like, or just left as insurance against accidents and future disk size differences. It's a lot simpler and easier for others to understand than exploiting every last feature of the software, IMHO. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org