Use the starttrace command to begin tracing I/O operations that are based on the option currently set for the specified object type and the list of disks to trace.
This command starts the collection of I/O tracing information. The trace file is generated according to the options that you specified in the svctask settrace command. The disks that are traced are those that are identified in the list that is set by the svctask setdisktrace command.
The traces are written to the /dumps/iotrace directory. You can view the contents of this directory using the svcinfo lsiotracedumps command.
An invocation example
svctask starttrace -type vdisk
The resulting output
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