Computer Drive User Manual

78 IBM System Storage DS6000 Series: Copy Services with IBM System z
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The following explanations apply to the cases presented in Example 9-2:
򐂰 Example 1: list FlashCopy information for a specific volume
In this example, the lsflash command shows the FlashCopy relationship information for
volume 0004, showing the status (enabled/disabled) of the FlashCopy properties.
򐂰 Example 2: list existing FlashCopy relationships information within a range of volumes.
In this example, the lsflash command shows the FlashCopy relationships information for
the range of volumes 0000 to 0004, showing the properties status (enabled/disabled).
򐂰 Example 3: list existing FlashCopy relationships with full information.
Using the -l parameter with the lsflash command displays the default output plus
information on the following properties: OutOfSyncTracks, DateCreated, and DateSynced.
򐂰 Example 4: list IDs of existing FlashCopy pairs within a volume range.
Using the -s parameter displays only the FlashCopy source and target volume IDs for the
specified range of volumes.
򐂰 Example 5: list FlashCopy relationships with active background copy running.
Using the parameter -activecp will display only those FlashCopy relationships within the
selected range of volumes for which a background copy is actively running. The output
format is the default output. In our example there were no active background copies.
򐂰 Example 6: list existing FlashCopy relationships with -record enabled.
Using the -record parameter will display only those FlashCopy relationships within the
selected range of volumes that were established with the -record parameter.
򐂰 Example 7: list existing FlashCopy relationships with the Persistent attribute enabled.
When using the parameter -persist only those FlashCopy relationships within the range
of selected volumes for which the Persistent option is enabled will be displayed.
򐂰 Example 8: list existing FlashCopy relationships which are revertible.
When using the parameter -revertible only those FlashCopy relationships within the
range of selected volumes for which the option Revertible is enabled will be displayed.
There were no revertible relationships in our example.
򐂰 Example 9: list existing FlashCopy relationships for which BackgroundCopy is enabled.
When using the parameter -cp only those FlashCopy relationships within the range of
selected volumes for which the option BackgroundCopy is enabled will be displayed.
Set an existing FlashCopy to revertible using setflashrevertible
The command setflashrevertible can be used to modify the revertible attribute of a
FlashCopy relationship that is part of a Global Mirror relationship.
The FlashCopy options Recording and Persistent must be enabled to set a FlashCopy
relationship to revertible using this command. This command needs to be executed prior to
running a commitflash or revertflash.
Example 9-3 on page 79 illustrates two situations using the setflashrevertible command.