On Fri, 8 Nov 2013 14:33:24 +0000 "Dorau, Lukasz" [off-list ref]
wrote:

On Friday, November 08, 2013 2:46 PM Francis Moreau [off-list ref] wrote:

quoted

quoted

If you created a RAID array with mdadm, it would work correctly - recovery would
start.

Nope, I've got an identical behaviour if the array is created by mdadm (v3.3).

I have checked it twice with Fedora 19 and mdadm v3.3 and it works.
What OS are you running?

quoted

As you can see, I'm confused about ISW vs IMSM.

Are those 2 formats the same thing ?

ISW is a name of Intel metadata used by dmraid and IMSM is a name of Intel metadata used by mdadm, but ISW in dmraid has not been supported and developed for a couple of years, so ISW might be called an old version of IMSM.

Lukasz

Unless we identify something in the metadata the dmraid writes which clearly
contravene the specification, we must assume there is a bug in mdadm.  I
haven't had a change to look at this properly yet but I hope to next week.

NeilBrown