NeilBrown <neilb@xxxxxxx> 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. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html