IBM Storwize V7000 Unified Problem Determination Manual page 292

Increasing the Storage pool capacity
To increase storage pool capacity, add more RAID arrays to the storage pool using
the management GUI.
Storage can be taken or borrowed from the block allocation to resolve out of space
conditions in the file allocation. Point in time block copies are a good candidate for
deletion.
Storwize V7000 Unified can virtualize external block storage controllers. If spare
capacity is available on other block storage controllers then you can virtualize
those and add the mdisks to the volume storage pool.
Free the unusable blocks in the compressed volumes
If you cannot increase the storage pool capacity then contact IBM Remote Technical
Support to help you.
Recovering from a 1001 error code
A 1001 error code indicates that the Storwize V7000 control enclosure has
automatically performed a recovery. The control enclosure CLI is now restricted to
make sure that there are no more block storage configuration changes until IBM
Remote Technical Support has checked that it is safe for block storage
configuration changes to be allowed again.
About this task
The file volumes presented by the control enclosure for GPFS to use as disks for
file systems may have been offline long enough to cause the file systems to be
unmounted. The file systems will usually be automatically mounted as soon as the
file volumes come back online after the control enclosure recovery. You can
immediately remount any remaining unmounted file systems without waiting for
IBM support to tell you that it is safe for you to re-enable the control enclosure
CLI.
Note: The management GUI can become very slow when the control enclosure
CLI is restricted, so the following procedure shows how to use the management
CLI to check if the file systems are mounted. However, it is better to use the
management GUI if that is working fine.
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Storwize V7000 Unified: Problem Determination Guide 2073-720
Table 42. Recovering from offline compressed volumes.
Scenario
Storage pool warning (80%
full)
Compression ratio wrong
(file system still online)
Storage pool full (file
system offline)
Storage pool full (file
system offline) No
available storage
Recovery Procedure
Provision more storage to
pool
Increase the storage to pool
size
Or
Free the unusable blocks in
the compressed volumes.
Provision more storage to
pool
Borrow hot spare disks,
bring file system online, free
up space, shrink filesystem,
return hot spare disks
Who does it?
You
You (Storwize V7000 fix
procedure)
You (with help from this
page)
You (with help from IBM
Remote Technical support)
You (Storwize V7000 fix
procedure)
You (with help fro IBM
Remote Technical Support)