Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

If you specify a task tag to vxassist when you start the relayout, you can use this
tag with the vxtask command to monitor the progress of the relayout. For example,
to monitor the task that is tagged as myconv, enter the following:
# vxtask monitor myconv
Controlling the progress of a relayout
You can use the vxtask command to stop (pause) the relayout temporarily, or to
cancel it (abort). If you specify a task tag to vxassist when you start the relayout,
you can use this tag to specify the task to vxtask. For example, to pause the
relayout operation that is tagged as myconv, enter:
# vxtask pause myconv
To resume the operation, use the vxtask command as follows:
# vxtask resume myconv
For relayout operations that have not been stopped using the vxtask pause
command (for example, the vxtask abort command was used to stop the task,
the transformation process died, or there was an I/O failure), resume the relayout
by specifying the start keyword to vxrelayout, as follows:
# vxrelayout -g mydg -o bg start vol04
If you use the vxrelayout start command to restart a relayout that you previously
suspended using the vxtask pause command, a new untagged task is created to
complete the operation. You cannot then use the original task tag to control the
relayout.
The -o bg option restarts the relayout in the background. You can also specify
the slow and iosize option modifiers to control the speed of the relayout and the
size of each region that is copied. For example, the following command inserts a
delay of 1000 milliseconds (1 second) between copying each 10 MB region:
# vxrelayout -g mydg -o bg,slow=1000,iosize=10m start vol04
The default delay and region size values are 250 milliseconds and 1 MB
respectively.
To reverse the direction of relayout operation that is stopped, specify the reverse
keyword to vxrelayout as follows:
# vxrelayout -g mydg -o bg reverse vol04
Administering volumes
Performing online relayout
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