On Mon, Feb 9, 2009 at 1:30 PM, Bill Davidsen <davidsen@xxxxxxx> wrote: > Jon Nelson wrote: >> >> I don't think so. This is how I *remove* the nbd device: >> >> mdadm /dev/md11 --fail /dev/nbd0 >> sleep 3 >> mdadm /dev/md11 --remove /dev/nbd0 >> >> and then finally nbd-client -d /dev/nbd0 >> >> If necessary, I can try to simulate the problem by using a local >> logical volume or some such. >> > > I would try this with just the first step. I looked at the code briefly, and > I think the write intent bitmap will not get built for a removed device but > will for failed. In any case it's certainly something you can easily try. Nope. :-( --remove is necessary. turnip:~ # mdadm --fail /dev/md11 /dev/nbd0 mdadm: set /dev/nbd0 faulty in /dev/md11 turnip:~ # mdadm --re-add /dev/md11 /dev/nbd0 mdadm: Cannot open /dev/nbd0: Device or resource busy turnip:~ # mdadm --add /dev/md11 /dev/nbd0 mdadm: Cannot open /dev/nbd0: Device or resource busy turnip:~ # -- Jon -- 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
