VxVM commands may respond slowly when you disable the primary paths and run the vxdisk scandisks command (3450060)
EMC mirror-view LUNs can be in the A/P-F mode and managed by DMP. In this case, if you disable the primary paths and run the vxdisk scandisks command, I/O is delayed on the secondary path until it's timeout. As a result, VxVM commands respond slowly.
Workaround:
To solve this issue, use any of the workarounds:
Configure LUNs in the Asymmetric Logical Unit Access (ALUA) mode.
OR
Set the error recovery policy to
fixed retry with the following command:
\# vxdmpadm setattr enclosure ENCLOSURE_NAME
recoveryoption=fixedretry retrycount=5