[RndTbl] can't stop md yet lsof is empty?

Trevor Cordes trevor at tecnopolis.ca
Sat Mar 16 17:09:33 CDT 2013

Very weird problem here:

I umounted the filesystem on a md (RAID1) device.


mdadm --stop /dev/md1
mdadm: Cannot get exclusive access to /dev/md1:Perhaps a running process, 
mounted filesystem or active volume group?


lsof /dev/md1

I remounted the fs and tried lsof <fs> and it was empty too.

I can't seem to find any reason why mdadm --stop should not allow stopping 
this array.  Any ideas?  Anything other than lsof that can help find out 

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