HP Storage Essentials NAS Manager Software - Manual (Page 420)

Provisioning Manager 388
“Process Has an Exclusive Lock” Message
You will receive a message resembling the one shown below if a process has already locked the
EMC Symmetrix storage system and you attempt a process that requires a lock on the Symmetrix
storage system. The Symmetrix storage system can become locked for many reasons. For example,
the storage system becomes locked when it performs LUN mapping, LUN masking or Discovery
Data Collection/Get Details. The Symmetrix storage system may also remain locked after a
provisioning operation has failed.
“SYMAPI routine SymDevMaskSessionStart failed with error code 188: The operation failed
because another process has an exclusive lock on the local Symmetrix.”
After the management server has detected the lock on the Symmetrix storage system, it tries to
access the storage system for 15 minutes and logs the errors.
If you receive the error message, determine if someone is performing an operation that requires a
lock, such as LUN mapping, LUN masking or Discovery Data Collection/Get Details. This also
applies even if one of the processes is being used by a third-party product, such as for LUN
masking. If so, wait until the process is complete. Only manually remove the lock if you are certain
that no other processes are occurring on the storage system. To learn how to remove the lock, refer
to the documentation for the Symmetrix storage system.
If a provisioning failure has caused the Symmetrix storage system to remain locked, you are alerted
to this situation in Event Manager and on the Properties tab. You may receive a message resembling
the following:
Unable to end device masking session. Symmetrix '000001835005700' may be
locked.
Some EMC Volumes, Their LUNs and LUN Maskings Are Hidden
EMC volumes, their LUNs and LUN maskings for the volumes that play a special role (such as
holding device masking information, attached BCVs, gate-keeper devices) are hidden. On the host
side, the software shows LUN maskings for these volumes. So you may see a LUN masking, but not
its volume residing on the EMC storage system.
Issues Specific to HDS Storage Systems
This section describes issues specific to HDS storage systems.
• ” About Provisioning on HDS Storage Systems ” on page 389
• ” Host Security Group Names on HDS Storage Systems ” on page 389
• ” Unable to Provision When HDS CruiseControl Is Enabled ” on page 390
• ” Increasing the Wait Time for the Management Server ” on page 390
• ” Initiator Ports Cannot Be Used for Provisioning ” on page 391
• ” The Software Is Unable to Map a Host to Volumes in Different Host Storage Domains of the
Same Port on HDS 9900V ” on page 391