Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

# vxdmpadm iostat show pathname=c3t115d0 interval=2 count=2
cpu usage = 8195us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c3t115d0 0 0 0 0 0.00 0.00
cpu usage = 59us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c3t115d0 0 0 0 0 0.00 0.00
Displaying statistics for queued or erroneous I/Os
Use the vxdmpadm iostat show command with the -q option to display the I/Os
queued in DMP for a specified DMP node, or for a specified path or controller. For
a DMP node, the -q option displays the I/Os on the specified DMP node that were
sent to underlying layers. If a path or controller is specified, the -q option displays
I/Os that were sent to the given path or controller and not yet returned to DMP.
See the vxdmpadm(1m) manual page for more information about the vxdmpadm
iostat command.
To display queued I/O counts on a DMP node:
# vxdmpadm -q iostat show [filter]
[interval=n [count=m]]
For example:
# vxdmpadm -q iostat show dmpnodename=c5t2d1s2
QUEUED I/Os Pending I/Os
DMPNODENAME READS WRITES
c5t2d1s2 2 15 30
To display the count of I/Os that returned with errors on a DMP node, path or
controller:
# vxdmpadm -e iostat show [filter]
[interval=n [count=m]]
For example, to show the I/O counts that returned errors on a path:
# vxdmpadm -e iostat show pathname=c5t2d1s2
Administering Dynamic Multi-Pathing
Administering DMP using vxdmpadm
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