search for: msg41928

...d127 # mdadm /dev/md127 --remove /dev/sdg mdadm: hot remove failed for /dev/sdg: Device or resource busy And in dmesg, I get an error like so: md: cannot remove active disk sdg from md127 ... More details, including mdadm -D output and other diagnostics, are at http://www.spinics.net/lists/raid/msg41928.html . As I note there, the array seems fine otherwise, but is not currently in active use (so perhaps my options are greater than if I wished to keep it deployed). As the other messages in that thread show, I think I've already done the ''obvious'' steps to try to remove the d...