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198 IBM System Storage DS6000 Series: Copy Services with IBM System z
4TH: ....... .... ................ . .... .... 00
S*=PATH STATUS
00=NO PATH
......
13=ESTABLISHED FIBRE CHANNEL PATH
......
ICK02206I PPRCOPY QUERY FUNCTION COMPLETED SUCCESSFULLY
ICK00001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 0
16.5 DS CLI freezepprc and unfreezepprc commands
When you want to suspend all Metro Mirror pairs (and remove paths) between a pair of LSSs,
you use the freezepprc command (or its equivalent in the other interfaces). It is used for data
consistency purposes to give a recovery point at your secondary site.
When the path is defined as a Consistency Group path, issuing a freezepprc command
causes an extended long busy condition for all Metro Mirror pairs on the LSS pairing. Once
you have issued freezepprc commands for all LSS pairs, you can then issue an unfreezepprc
command (or equivalent in the other interfaces) to remove the extended long busy.
Example 16-15 shows an example of the use of the DS CLI freezepprc and the unfreezepprc
commands.
Example 16-15 freezepprc DS CLI command
dscli> freezepprc -dev ibm.1750-13aavca -remotedev ibm.1750-13aavca 00:01
Date/Time: 8 June 2005 04:44:54 PM IBM DSCLI Version: 5.0.3.5 DS: IBM.1750-13AAVCA
CMUC00161W freezepprc: Remote Mirror and Copy consistency group 00:01 successfully created.
dscli>
dscli> unfreezepprc -dev ibm.1750-13aavca -remotedev ibm.1750-13aavca 00:01
Date/Time: 4 June 2005 01:27:38 PM IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13AAVCA
CMUC00198I unfreezepprc: Remote Mirror and Copy pair 00:01 successfully thawed.
dscli>
These commands can be issued by your automation routine to create data consistency at the
first error message (to prevent a
rolling disaster situation). The freezepprc command is
issued to all LSS pairs as quickly as possible, followed by unfreezepprc commands.