The manpage for mdadm states for the --run option: -R, --run Insist that mdadm run the array, even if some of the components appear to be active in another array or filesystem. Normally mdadm will ask for confirmation before including such components in an array. This option causes that question to be suppressed.
So: either the manpage lies about the circumstances under which the --run option is applicable, or mdadm for some reason thinks that a device that doesn't exist is equivalent to a device that is in use somewhere else. I suspect the latter. Either way, it looks like a bug in mdadm. All this may be redundant, of course, but I just wanted to state all this here to make it crystal clear what the issue really is (or at least appears to be). One otherwise has to scan the bug conversation to see this. -- Kevin Brown [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]