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Chapter 9. FlashCopy interfaces 81
resyncflash -dev IBM.1750-13ABC2A -record -persist -seqnum 11 0001:0101 0005:0105
Date/Time: July 10, 2005 5:05:58 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
CMUC00168I resyncflash: FlashCopy volume pair 0001:0101 successfully resynchronized.
CMUC00168I resyncflash: FlashCopy volume pair 0005:0105 successfully resynchronized.
resyncflash -dev IBM.1750-13ABC2A seqnum 13 0003:0103
Date/Time: July 10, 2005 5:06:25 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
CMUC00168I resyncflash: FlashCopy volume pair 0003:0103 successfully resynchronized.
lsflash -dev IBM.1750-13ABC2A 0000-0005
Date/Time: July 10, 2005 5:06:39 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
ID SrcLSS SequenceNum Timeout ActiveCopy Recording Persistent Revertible SourceWriteEnabled TargetWriteEnabled BackgroundCopy
====================================================================================================================================
0001:0101 00 11 300 Disabled Enabled Enabled Disabled Disabled Disabled Enabled
0003:0103 00 13 300 Disabled Disabled Disabled Disabled Disabled Disabled Enabled
0005:0105 00 11 300 Disabled Enabled Enabled Disabled Disabled Disabled Enabled
#--- Example 2
mkflash -dev IBM.1750-13ABC2A -seqnum 03 0004:0104
Date/Time: July 10, 2005 5:05:32 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
CMUC00137I mkflash: FlashCopy pair 0004:0104 successfully created.
lsflash -dev IBM.1750-13ABC2A 0004
Date/Time: July 10, 2005 5:06:39 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
ID SrcLSS SequenceNum Timeout ActiveCopy Recording Persistent Revertible SourceWriteEnabled TargetWriteEnabled BackgroundCopy
====================================================================================================================================
0004:0104 00 4 300 Disabled Disabled Disabled Disabled Disabled Disabled Enabled
resyncflash -dev IBM.1750-13ABC2A -record -persist -seqnum 14 0004:0104
Date/Time: July 10, 2005 5:06:51 PM CEST IBM DSCLI Version: 5.0.3.134 DS: IBM.1750-13ABC2A
CMUN03027E resyncflash: 0004:0104: FlashCopy operation failure: action prohibited by current FlashCopy state
The following explanations apply to the examples shown in Example 9-5:
Example 1: increment a FlashCopy relationship.
In this example, three FlashCopy relationships are created with the -record and -persist
parameters. The resyncflash commands are executed using a different sequence
number, which overwrites the one of the current FlashCopy relationship. The sequence
number only changes if the resyncflash finishes successfully.
The resyncflash for the 0001:0101 and 0005:0105 relationships take place using the
-record and -persist parameters. Because the two parameters are omitted for the
0003:0103 FlashCopy relationship, the two properties Recording and Persistent change to
disabled for this FlashCopy relationship. As soon as the background copy for the
0003:0103 FlashCopy relationship finishes, the FlashCopy relationship terminates.
Example 2: error occurs when trying to increment FlashCopy relationship.
When trying to increment a FlashCopy relationship for which the properties Recording and
Persistent are disabled, an error will be the result. The script will end after this command
with return code 2 and any other commands following the one that caused the error will
not be executed.
Reverse source-target relationship using reverseflash
The command reverseflash can be used to change the direction of a FlashCopy
relationship. The former source becomes target and the former target becomes source. The
data is copied from the target to the source.
Example 9-6 on page 82 illustrates examples of the use of the reverseflash command.