Re: Alignment of RAID on specific boundary

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Michael Evans wrote:

It starts the LVM2 header after 0x3000 bytes (64K chunk size); I'd
hope to see it around 0x10000.

It looks like the data isn't padded up to the desired offset.

I agree, it would be useful to have an option to specify the offset of
the first data chunk.


Regarding lvm, you can use --dataalignment and --metadatasize for that purpose. Recent lvm versions, when creating directly on md raid (and assuming recent kernel), should align themselves automatically:

http://www.redhat.com/archives/linux-lvm/2009-September/msg00092.html

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