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pvmove moves the allocated physical extents (PEs) on a source PV to one or
more destination PVs. You can optionally specify a source LV in which
case only extents used by that LV will be moved to free (or specified)
extents on the destination PV. If no destination PV is specified, the
normal allocation rules for the VG are used.
.P
If pvmove is interrupted for any reason (e.g. the machine crashes) then
run pvmove again without any PV arguments to restart any operations that
were in progress from the last checkpoint. Alternatively, use the abort
option at any time to abort the operation. The resulting location of LVs
after an abort depends on whether the atomic option was used.
.P
More than one pvmove can run concurrently if they are moving data from
different source PVs, but additional pvmoves will ignore any LVs already
in the process of being changed, so some data might not get moved.
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