However, I don't see any way to 'force a disk online' like you can on hardware raid. How can I change the status? If I can force the disk online, I should be able to mount the array in degraded mode, and recover most everything, except for the data that lies on the stripe using those 8K.
you have to recreate the array using all the devices in the same order as they were before, without the spare, and using the "missing" keyword in place of the removed drive. also other options like layout and chunk size must be the same. having a missing drive will cause the array to be created in degraded mode and parity not rebuilt, so you will have a chance for data recovery
that is all the info you need.Below is the output I have from looking at the status of each drive. The very last disk is the partially rebuilt replacement for Raid Device 7. I need to mark RaidDevice 8 as active.
L.
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Luca Berra -- bluca@comedia.it
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