Mount Verification
Mount verification is a process of verifying a connection to the volume after an unseccessful I/O. It continues until the volume has been successfully verified or until mount verification timeout expires.
Contents
Causes
The following can cause mount verification:
- drive problems (such as a failed port)
- disk problems (hardware errors)
- controller/SAN fabric problems
- storage connection problem
- device is write locked manually while a write operation is in progress
- in a multipath configuration, paths to the device are switched
Symptoms
When mount verification starts, two messages are sent to the terminals: one to OPCOM and the other one directly to OPA0:.
Timeout
Mount verification (except in case of write locking) continues until it times out. The timeout is controlled with MVTIMEOUT and TAPE_MVTIMEOUT
Disabling
To disable mount verification on a device, mount it with /NOMOUNT_VERIFICATION.
