From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031030 Description of problem: RHEL3 Update 2 Beta ia64 # cat /etc/redhat-release Red Hat Enterprise Linux AS release 3 (Taroon Update 2) /dev/md0 cannot be stopped with raidstop or mdadm --stop (although other md devices can be stopped), the kernel gives -EBUSY every time an attempt is made to stop /dev/md0 Version-Release number of selected component (if applicable): kernel-2.4.21-12.EL, raidtools-1.00.3-7, mdadm-1.5.0-3 How reproducible: Always Steps to Reproduce: # mdadm -C -l 1 -n 2 /dev/md0 /dev/loop1 /dev/loop2 # mdadm --stop /dev/md0 mdadm: fail to stop array /dev/md0: Device or resource busy # raidstop /dev/md0 /dev/md0: Device or resource busy (The same sequence works if the device is /dev/md1 or /dev/md2). Additional info:
The problem is due to the "mdadm --monitor --scan" process that is started at boot time (/etc/init.d/mdmonitor). If this is stopped, /dev/md0 can then be stopped.
*** This bug has been marked as a duplicate of 119532 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.