HP XP7 Storage - Manual (Page 179)

(3) pairsplit -S option
•
Issues Freeze to CT group on each MCU
•
Issues Delete & Run to make a deleting state for CT group on each MCU
•
Searches/commits a minimum matching point of the CTQ-Marker on RCU via MCU (in other
words, do Journal Restore with CTQ-Marker)
•
Repeats above until detecting an EOM (End Of Marker) marked on MCU on all RCU via MCU
•
Issues End of Delete to terminate a deleting state, after committed with EOM (End Of Marker)
on all RCU
Exception: If an uncommitted state(that is, link failure) is detected while executing its operation,
then the operation of committing is aborted on keeping current CTQ-Marker level, and a deleting
state terminates without waiting for an EOM (End Of Marker).
(4) pairsplit -RS option
In the case of PAIR state (NO failure):
•
Issues SwapSuspend to make a suspending state for CT group on each RCU
•
Searches/commits a minimum matching point of the CTQ-Marker on RCU via RCU (in other
words, do Journal Restore with CTQ-Marker)
•
Repeats above until detecting an EOM (End Of Marker) marked on MCU on all RCU via RCU
•
Issues End of Suspend to terminate a suspending state, after committed with an EOM (End Of
Marker) on all RCU
Exception: If an uncommitted state (that is, link failure) is detected while executing its operation,
then the operation of committing is aborted on keeping current CTQ-Marker level, and a suspending
state terminates with detecting at least one EOM (End Of Marker).
In the case of Failure (PSUE/PSUS):
•
Issues SwapSuspend to make a suspending state for CT group on each RCU
•
Searches/commits a minimum matching point of the CTQ-Marker on RCU via RCU (in other
words, do Journal Restore with CTQ-Marker)
•
Repeats above until detecting an EOM(End Of Marker) marked on all RCU via RCU
•
Issues End of Suspend to terminate a suspending state
(5) pairsplit -R option
In the case of PAIR state (NO failure):
•
Issues Delete to make a deleting state for CT group on each RCU
•
Searches/commits a minimum matching point of the CTQ-Marker on RCU via RCU (in other
words, do Journal Restore with CTQ-Marker)
•
Repeats above until detecting an EOM (End Of Marker) marked on MCU on all RCU via RCU
•
Issues End of Delete to terminate a deleting state, after committed with an EOM (End Of
Marker) on all RCU
Exception: If an uncommitted state (that is, link failure) is detected while executing its operation,
then the operation of committing is aborted on keeping current CTQ-Marker level, and a deleting
state terminates with detecting at least one EOM (End Of Marker).
In the case of Failure(PSUE/PSUS):
•
Issues Delete to make a deleting state for CT group on each RCU
•
Searches/commits a minimum matching point of the CTQ-Marker on RCU via RCU (in other
words, do Journal Restore with CTQ-Marker)
Continuous Access Journal MxN configuration and control 179