Recovering From File Systems That Are Offline After The Volumes Came Back Online; Recovering From A Multipath Event - IBM Storwize V7000 Unified Problem Determination Manual

Recovering from file systems that are offline after the volumes
came back online
The problem that caused the file volumes to go offline long enough to cause the
file systems to become unmounted may have caused disks to be marked as failed
which will prevent the file system from being automatically mounting after the
volume comes back online.
About this task
The file systems will usually be automatically mounted as soon as the file volumes
come back online. However, if GPFS experienced IO errors as the volume went
offline then it may mark the disks as failed.
If this happens then the automatic mounting of the file system will not work and
the disks must be started using the Start All Disks action against the file system in
the management GUI before they are mounted using the management GUI.
Procedure
To re mount any file system that was not automatically remounted when the file
volumes came back online:
1.
2. Hover over the Status indicator of any file system which does not have an OK
3. If The <pool name> file system pool contains failing disks is displayed then
4.
Results
If the health status indicator is still red after completing all recovery procedures
then refer to"Health status and recovery" on page 62 to help you return the health
status indicator back to green.

Recovering from a multipath event

Use this procedure to recover a node from a multipathd failure.
Before you begin
Use this procedure after completing the procedure in Fibre Channel connectivity
between file modules and control enclosure.
The Storwize V7000 Unified system can experience problems where the multipathd
failures occur. If the paths are not automatically restored, a system reboot can
recover the paths.
Important: Perform this procedure against the passive management node only.
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The system now reboots. During the reboot, the Storwize V7000 Unified code
automatically modifies the configuration of the System x firmware (BIOS) to
change the default settings to the required settings.
Go to the files > file systems page in the management GUI to see if any file
systems are offline.
status.
select the action to Start All Disks used by this file system.
If hovering over the Status indicator of the file system shows that the file
system is not mounted on any node, or on one of the nodes, then select the
action to mount the file system.