Bernd Schubert wrote: > Benjamin Schieder wrote: > > >> root@crazyhorse:~# mdadm /dev/md/2 -r /dev/hdh5 >> mdadm: hot remove failed for /dev/hdh5: No such device >> >> md1 and md2 are supposed to be raid5 arrays. > > You are probably using udev, don't you? Somehow there's presently > no /dev/hdh5, but to remove /dev/hdh5 out of the raid, mdadm needs this > device. There's a workaround, you need to create the device in /dev using > mknod and then you can remove it with mdadm. In case the /dev/hdh5 device node is missing, mdadm will complain "No such file or directory" (ENOENT), instead of "No such device" (ENODEV). In this case, as I explained in my previous email, the arrays aren't running, and the error refers to manipulations (md ioctls) with existing /dev/md/2. It has nothing to do with udev. /mjt - 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