HP P9000 for Compatible FlashCopy Mirroring User Guide (AV400-96388, October 2011)

Example 19 FLASHCOPY RESYNC Command
flashcopy establish source 30 0-end target 40 0-end chgrecord reversible
Command complete: FLASHCOPY 0030 0 END TO 0040 0 END flashcopy resync source 30 0-end target 40 0-end RESYNC
COMPLETED
Removing write protection from S-VOL by using z/VM FLASHCOPY TGTWRITE command
To remove write protection from the S-VOL of the relationship, use the FLASHCOPY TGTWRITE
command. The following table shows the parameter available with the FLASHCOPY TGTWRITE
command.
Table 34 FLASHCOPY TGTWRITE command parameters
DescriptionValueParameter
Specifies the device number (device address or mini disk number),
the starting cylinder, and the ending cylinder of the copy destination.
Secondary device
number, Starting
TARGET
cylinder of target,
Ending cylinder of
target
Releasing a Compatible FlashCopy Relationship
The following sections explain how to use various commands to withdraw Compatible FlashCopy
relationships. You can use the FCESTABL command of the PPRC TSO, ICKDSF,ANTRQST Macro,
and z/VM CP commands to withdraw Compatible FlashCopy relationships. See the following
sections for specific instructions:
• “Releasing a Compatible FlashCopy relationship using TSO command” (page 60)
• “Releasing a compatible FlashCopy relationship using ICKDSF command” (page 71)
• “Releasing a Compatible FlashCopy relationship using ANTRQST macro command” (page 73)
CAUTION: When a number of FlashCopy relationships are withdrawn at the same time for
a storage system shared with IBM OS or Fujitsu OS, a time-out may occur. Therefore, when
planning to withdraw a quantity of FlashCopy relationships, divide the tasks into small groups
to minimize time-out issues.
For instance, when you release 100 relationships or more, you should release relationships
at intervals of about five seconds per 100 relationships.
Releasing a Compatible FlashCopy relationship using TSO command
The FCWITHDR command can be used to withdraw relationships established for copy operations
set either in COPY or NOCOPY mode.
CAUTION: If you use the FCWITHDR command a single time when deleting numerous
relationships, a timeout may occur with the host. Therefore, use the FCWITHDR command repetitively
when deleting numerous relationships. Also, after you execute the FCWITHDR command the first
time, wait for a period of time before you execute the command again. For example, if you execute
the FCWITHDR command one time when deleting more than 700 relationships, wait for
approximately 5 seconds until you execute the command again.
The following table lists the parameters you can use with the FCWITHDR command when you
release Compatible FlashCopy relationships.
60 Performing Compatible FlashCopy operations