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
Chapter7. Copying Data from Arrays and from Volume Groups 153
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