xtraeme 10f7c0a4da Add BIOC_SVMIGRATING to bio(4) and bioctl(8) to report if a volume
is migrating currently showing the percentage.

Update arcmsr(4) to report this, like:

$ sudo ./bioctl -h arcmsr0
    Volume Status     Size Device
 arcmsr0 0 Migrating  698G ARC-1210-VOL#00 RAID 5 7% done
	 0 Online     234G 0:0.0   noencl <WDC WD2500YS-01SHB1 20.06C06>
	 1 Online     234G 0:1.0   noencl <WDC WD2500YS-01SHB1 20.06C06>
	 2 Online     234G 0:2.0   noencl <WDC WD2500YS-01SHB1 20.06C06>
	 3 Online     234G 0:3.0   noencl <WDC WD2500YS-01SHB1 20.06C06>
$
2007-12-07 11:51:21 +00:00
..