8 troubleshooting, Troubleshooting vll, Troubleshooting thin provisioning – HP XP P9500 Storage User Manual
Page 188
8 Troubleshooting
Information is provided here for troubleshooting problems you may have when provisioning your
storage system.
If a failure occurs while your operating and a message appears, see the HP P9000 Remote Web
Console Messages for further instructions.
For problems and solutions regarding to using Remote Web Console, see the HP P9000 Remote
Web Console User Guide.
Troubleshooting VLL
If a failure occurs while you are operating, see the HP P9000 Remote Web Console Messages.
For the problems and solutions regarding the Remote Web Console, see the HP P9000 Remote
Web Console User Guide
Troubleshooting Thin Provisioning
The following table provides troubleshooting instructions for using Thin Provisioning.
Causes and Solutions
Problems
Cause:
•
Shared memory for the V-VOL management area is not installed.
Solution:
•
Call the HP Technical Support and check if the shared memory for
the V-VOL management area is installed.
Cannot install Thin Provisioning.
Causes:
Pool usage level exceeds the threshold.
•
Too many THP V-VOLs are associated with a pool, or too much data
is stored in a pool.
•
Capacity of the pool is insufficient.
•
The threshold of the pool is too low.
Solutions:
•
Add some pool-VOLs to increase the capacity of the pool. See
.
•
Perform the operation to reclaim zero pages in order to release pages
in which zero data are stored. See
•
Set a larger value to the threshold of the pool. See
After correcting the causes of SIM 620XXX and 621XXX or 620XXX
and 626XXX, you need to complete the SIMs (see
). If you do
not complete the SIMs, no new SIM will occur even if the usage level
increases and again exceeds the threshold (target SIM codes are
620XXX, 621XXX, and 626XXX).
SIMs 620XXX, 621XXX, 625000, and 626XXX are automatically
completed if you increase pool capacity by adding pool-VOLs, because
the condition that caused the SIM is removed.
Caution: You need free volumes to add as pool-VOLs. If there are no
free volumes, create new volumes or ask the HP Technical Support to
add drives. Therefore, it may take time to solve the problem.
Causes:
Cannot create a THP V-VOL.
•
Usage of the pool has reached to 100%.
•
Something in the storage system is blocked.
•
Too many THP V-VOLs are assigned, or Subscription Limit is too low.
188 Troubleshooting