IBM Storwize V7000 Unified Problem Determination Manual page 173

9. Using the GUI event log, follow the troubleshooting documentation against the
Checking CTDB health
Use this information for checking the health of the clustered trivial database
(CTDB) on each file module.
About this task
CTDB checks the health status of the Storwize V7000 Unified file modules,
scanning elements such as storage access, General Parallel File System (GPFS),
networking, Common Internet File System (CIFS) shares, and Network File System
(NFS) exports.
An unhealthy file module cannot serve public Internet Protocol (IP) addresses and
must be fixed. However, the high availability features of the Storwize V7000
Unified system can mask the unhealthy status from its clients by failing over IP
addresses from an unhealthy file module to a healthy file module.
In the management graphical user interface (GUI), select Monitoring > System and
check the health status for errors and degraded events.
Procedure
To check the status using either the GUI or the command-line interface (CLI),
complete this procedure:
1. To check the CTDB status:
b. If the lsnode output provides system configuration information, verify that
you can access and log in to the GUI. If you still have trouble with
accessing the GUI, refer to .
c. If the lsnode output reports that the management service is still not
running, contact IBM support.
file module with the failed management node role to isolate the software or
hardware problem that might have caused this issue.
v With the Storwize V7000 Unified GUI, use the following method:
Select Monitoring > System Details > Interface Nodes > mgmt001st001 >
NAS Services. In the CTDB state row, a healthy status is displayed as
"Active" and an unhealthy status is displayed as "unhealthy".
A "disconnected" status is displayed when this CTDB node could not be
reached through the network and is currently not participating in the
cluster.
Review the status of both file modules, 1 mgmt001st001 and 2
mgmt002st001, as shown in Figure 34 on page 154.
153
Chapter 4. File module