Re: Assume-clean for md grow

[Chris Webb <chris@arachsys.com>]

NeilBrown <neilb@suse.de> writes:

> Or if you want to be slightly more subtle, remove the
> 	if (mddev->pers)
> 		return -EBUSY;
> from resync_start_store.  Then before a grow that you want to be
> --assume-clean, write into /sys/block/mdXX/md/resync_start the
> number of sectors in the final raid1 array.

Hi Neil. Thanks for this suggestion: it looks fine for what we're looking to
achieve. Interestingly, this will mean writing a smaller value that shown by
a read from this file for an in-sync array, but will still work?

I'll build a patched kernel and give it a go a little later on.

Best wishes,

Chris.