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

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
This undoes changes made to the volume so far, and returns it to its original
layout.
If you cancel a relayout using vxtask abort, the direction of the conversion is
also reversed, and the volume is returned to its original configuration.
See “Managing tasks with vxtask” on page 341.
See the vxrelayout(1M) manual page.
See the vxtask(1M) manual page.
Converting between layered and non-layered volumes
The vxassist convert command transforms volume layouts between layered
and non-layered forms. The command has the following syntax
# vxassist [-b] [-g diskgroup] convert volume [layout=layout] \
[convert_options]
If you specify the -b option, the conversion of the volume is a background task.
The following conversion layouts are supported:
Mirrored-stripe to striped-mirrorstripe-mirror
Striped-mirror to mirrored-stripemirror-stripe
Mirrored-concatenated to concatenated-mirrorconcat-mirror
Concatenated-mirror to mirrored-concatenatedmirror-concat
381Administering volumes
Converting between layered and non-layered volumes