HP StorageWorks Snapshot XP user guide (T1713-96021, June 2006)

66 Troubleshooting
Pool information is not displayed. Causes:
• Pool is blocked.
Solutions:
• Implement the measures in ”Recovering blocked pools” on page 68.
A pool is blocked. Causes:
• Pool-VOLs are blocked.
Solutions:
• Implement the measures in ”Recovering blocked pools” on page 68.
In addition, after the problem is solved, you must complete the SIMs.
If you do not, new SIMs cannot occur, even if a pool is blocked
again. For more information, see ”Completing pool-related SIMs”
on page 69.
Pool usage rate exceeds the threshold. Causes:
• Too much snapshot data is stored in the pool.
• Pool capacity is too small.
• Pool threshold is too small.
Solutions:
• Delete snapshot data that is less important or delete old snapshot
data to decrease the pool usage rate. See ”Restoring Snapshot XP
pairs” on page 55.
• Add some pool volumes to increase the pool capacity. See
”Creating new pools” on page 45.
• Set the pool threshold to a larger value. See ”Changing pool
information” on page 47.
In addition, after the problem is solved, you must complete the SIMs. If
you do not, new SIMs cannot occur, even if the usage rate exceeds the
threshold again. For more information, see ”Completing pool-related
SIMs” on page 69.
NOTE: You need unused volumes to add pool volumes. If there are no
unused volumes, create new volumes or contact your HP account
support representative to add hard disks. Therefore, it might take time to
solve the problem.
Cannot add pool-VOLs. Causes:
• 1,024 pool-VOLS are already set in the pool.
• Available pool management block in the V-VOL management area
(which is in shared memory) is insufficient.
Solutions:
• Add pool-VOLs to another pool. See ”Creating new pools” on
page 45.
• Initialize the V-VOL management area. See ”Initializing V-VOL
management areas” on page 48.
Table 23 Troubleshooting for Snapshot XP (continued)
Problem Cause and solution