Re: examining the layout of an existing raid device?

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On Mon, 26 Sep 2011 06:18:24 -0400 Christoph Hellwig <hch@xxxxxxxxxxxxx>
wrote:

> Maybe I'm just stupid, but is there a way to figure out the exact
> geometry (e.g. pretty print of the superblock) for an existing array
> somehow?  I couldn't find anything in the mdadm man page for it.

mdadm -E /dev/sda

will print the metadata on device /dev/sda which describes the array that it
is a member of.

mdadm -D /dev/md0

will print the geometry of the array /dev/md0

Is that what you wanted?

NeilBeown

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