On 02/01/2011 11:26 AM, Lennart Sorensen wrote:
If the raid stores the raid info at the end, then the data starts at sector 0. So no space for a bootloader at all.
I know that is how it works with 0.9, but are you sure it is for 1.0? If so, then for anything but raid-1 we will just have to try to install only to the first device if it has an MBR.
Certainly makes sense. Now is 4K enough for a boot loader? Not sure.
It is enough for the MBR. The core image will need to go elsewhere, hence the proposal to ask mdadm for a suitable location.
I personally consider soft raid on raw devices so convluted that I have never done it. I would rather have something I know works with my bootloader and other tools, than gain that extra 1MB (at most) that not having partitions gives. Also given many PCs won't boot from a drive without a partition table, it isn't even an option then.
That is why I like the idea of 1.2 since you could still have a bootable MBR when using the whole disk. Though now that you mention it, I can't think of a good reason to use the whole disk instead of a partition either.
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