HP XP7 User Manual page 168

Problems
Cannot reclaim zero pages in a THP V-VOL.
The THP V-VOL cannot be released if the
process to reclaim zero pages in the THP
V-VOL is interrupted.
SIM code such as 620xxx, 622xxx, 625000
or 626xxx was issued.
SIM code 624000 was issued.
Formatted pool capacity displayed in the
View Pool Management Status window does
not increase.
168 Troubleshooting
Causes and Solutions
Causes:
Zero pages in the THP V-VOL cannot be reclaimed because the THP
V-VOL does not meet conditions for releasing pages in a THP V-VOL.
Solutions:
Make sure that the THP V-VOL meets the conditions described in
"Releasing pages in a THP V-VOL" (page
Causes:
Pages of the THP V-VOL are not released because the process of
reclaiming zero pages was interrupted.
Solutions:
Make sure that the THP V-VOL meets the conditions described in
"Releasing pages in a THP V-VOL" (page
Causes:
Pool usage level exceeds the threshold.
Solutions:
Add pool-VOLs to the pool to increase the free space in the pool.
See "Increasing pool capacity" (page
Perform the operation to reclaim zero pages in order to release pages
in which zero data are stored. See
V-VOL" (page 153).
Causes:
The pools and THP V-VOLs configuration, of which the size is more
than the supported capacity, is created.
Solutions:
Remove pools that are not used.
Remove THP V-VOLs that are not used.
Remove Fast Snap pairs that are not used.
Shrink pools capacities.
Causes:
Another pool is being formatted.
The pool usage level reaches up to the threshold.
The pool is blocked.
I/O loads to the storage system are high.
The cache memory is blocked.
Pool-VOLs are blocked.
Pool-VOLs which are external volumes are blocked.
Solutions:
Confirm the display again after waiting for a while.
Add pool-VOLs to the pool to increase the free space in the pool.
For more information, see
Perform the operation to reclaim zero pages in order to release pages
in which zero data are stored. See
V-VOL" (page 153).
Confirm the display again after decreasing I/O loads of the storage
system.
Contact HP technical support to restore the cache memory.
154).
154).
143).
"About releasing pages in a THP
"Increasing pool capacity" (page
"About releasing pages in a THP
143).