Hi Neil, here is another question. 2 years ago you committed c7079c84 "ddf: remove failed devices that are no longer in use", with the reasoning "it isn't clear what (a phys disk record for every physically attached device) means in the case of soft raid in a general purpose Linux computer". I am not sure if this was correct. A common use case for DDF is an actual BIOS fake RAID, possibly dual-boot with a vendor soft-RAID driver under Windows. Such other driver might be highly confused by mdadm auto-removing devices. Not even "missing" devices need to be removed from the meta data in DDF; they can be simply marked "missing". May I ask you to reconsider this, and possibly revert c7079c84? Martin -- 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