Solutions Enabler SYMCLI, Symmetrix, SRDF, Timefinder
Procedure to release Symmetrix device lock manually using SYMCLI
The following command can be used to view the device locks:
symdev -lock list (Check for -L / P next to the lock)
L = Long lock, typically associated with SymReplicate and indicates that a long lock is normal. Before releasing lock the customer should check with replicate manager to see if they can stop the process holding the lock.
P = Persistent, cluster-type lock (ex: AIX)
To release the device external lock use:
symdev -lock # release
Warning: Use the release lock action only if you believe that the Symmetrix device lock was forgotten and there are NO other operations in progress to the specified Symmetrix devices (local or remote). Be ready to recognize when a device lock being held by a certain application might be allocated as a long duration lock.
Please refer to KB 4390 for detailed explanation.