HP StorageWorks Snapshot XP user guide (T1713-96023, October 2006)

Table 23 Troubleshooting for Snapshot XP
Problem Cause and solution
Cannot install Snapshot XP.
Causes:
• Shared memory for the V-VO L management area is not
installed.
• Shared memor y is not set for the V-VOL management area.
• Shared memory for the differential tables is not installed.
Solutions:
• Contact your HP account suppor t representative and check if
the s hare d memory for the V-VOL management area and the
differential tables is installed.
• Contact your HP account support representative and check if the
shared memory for th e V-VOL management area is set correctly.
Pool information is not displayed.
Causes:
• Pool is blocked.
Solutions:
• Implement the measures i n Recovering blocked pools.
A pool is blocked.
Causes:
• Pool-VOLs are blocked.
Solutions:
• Implement the measures in Recovering b
locked pools.In
addition, af ter the problem is solved, you must complete the
SIMs. If you do not, new SIMs cannot occur, even if a pool
is blocke d again. For more information, see Completing
pool-related SIMs.
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.
• Addsomepoolvolumestoincreasethepoolcapacity. See
Creating new pools.
• Set the pool threshold to a larger value. See Changing pool
information.
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.
NOTE:
You need unused volumes to add p
ool volumes. If there
are no unused volumes, create new volumes or contact
your HP account support representative to add hard disks.
Therefor e, 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.
• Initialize the V -VOL managem ent area. See Initializing V-VOL
management areas.
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Troubleshooting