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4. The time needed for the copy operation is related to the amount of data that you
are copying. A large amount of data might take more that one hour to copy. To
check whether the copy operation has completed, type:
ssaraid -I -l ssa2 -n hdisk5
While the copy operation is running, the following information is included in the
displayed data:
array_coupled true
copy_status copying
copy_percentage 90
uncopied_strips 1234
copy_rate 50
copy_verify_writes true
When copy_status changes from copying to good, the copy operation has
completed.
Alternatively, you can check the status of the copy operation by listing the coupled
arrays that are being copied; for example:
ssaraid -I -l ssa2 -t raid_1 -a copy_status=copying
ssaraid -I -l ssa2 -t raid_1 -a copy_status=good
5. If the fast-write function was enabled on the parent array, it is recommended that, to
increase the speed of the uncouple operation, you suspend fast-write caching and
flush any cached data to the array. Type:
ssaraid -H -l ssa2 -n hdisk5 -a fw_suspended=true
6. If copy_status=good, you can now uncouple the copy array from the parent array.
Type:
ssaraid -A -l ssa2 -i uncouple -n hdisk5
If the fast-write function is enabled for the parent array, the uncouple operation
checks whether fast-write caching has been suspended. If you did not suspend
fast-write caching in step 5, the uncouple operation now suspends the caching for
the parent array, and flushes the fast-write cache data to disk. When the copy array
has been uncoupled, the uncouple operation restarts caching for the parent array. A
message is displayed; for example:
185439188B4F4CT created
185439188B4F4CT changed
8A8E39746BD3C4G uncoupled
185439188B4F4CT is the new RAID-Copy array serial number.
7. If you suspended caching in step 5, restart it. Type:
ssaraid -H -l ssa2 -n hdisk5 -a fw_suspended=false
Chapter 7. Copying Data from Arrays and from Volume Groups 153
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