Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Chapter 8, Administering Volumes
Monitoring and Controlling Tasks
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monitor Prints information continuously about a task or group of tasks as task
information changes. This allows you to track the progression of tasks.
Specifying -l causes a long listing to be printed. By default, short one-line
listings are printed. In addition to printing task information when a task state
changes, output is also generated when the task completes. When this occurs,
the state of the task is printed as EXITED.
pause Puts a running task in the paused state, causing it to suspend operation.
resume Causes a paused task to continue operation.
set Changes modifiable parameters of a task. Currently, there is only one
modifiable parameter, slow[=iodelay], which can be used to reduce the
impact that copy operations have on system performance. If slow is
specified, this introduces a delay between such operations with a default
value for iodelay of 250 milliseconds. The larger the value of iodelay that is
specified, the slower is the progress of the task and the fewer system
resources that it consumes in a given time. (The slow attribute is also
accepted by the vxplex, vxvol and vxrecover commands.)
vxtask Usage
To list all tasks currently running on the system, use the following command:
# vxtask list
To print tasks hierarchically, with child tasks following the parent tasks, specify the -h
option, as follows:
# vxtask -h list
To trace all tasks in the disk group, foodg, that are currently paused, as well as any tasks
with the tag sysstart, use the following command:
# vxtask -g foodg -p -i sysstart list
Use the vxtask -p list command lists all paused tasks, and use vxtask resume to
continue execution (the task may be specified by its ID or by its tag):
# vxtask -p list
# vxtask resume 167
To monitor all tasks with the tag myoperation, use the following command:
# vxtask monitor myoperation
To cause all tasks tagged with recovall to exit, use the following command:
# vxtask abort recovall