IBM Storwize V7000 Unified Problem Determination Guide

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:
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 72 on page 188.
Chapter 4. File module 187

IBM Storwize V7000 Unified Specifications

General

Model	IBM Storwize V7000 Unified
Storage Type	Unified Storage
RAID Levels	RAID 0, 1, 5, 6, 10
Form Factor	2U
Drive Types Supported	SAS, SSD
Maximum Drives	504
Network Protocols	iSCSI, FC, FCoE
Drive Bays	24 per enclosure
Host Interface	8 Gb FC, 1 Gb/10 Gb iSCSI
File Protocols	NFS, CIFS
Block Protocols	iSCSI, Fibre Channel
Type	Unified Storage
Maximum Host Ports	16
Operating System Support	VMware, Microsoft Windows, Linux, AIX
Data Services	Thin provisioning, replication
Power Supply	Redundant power supplies
Host Interfaces	8 Gbps Fibre Channel, 10 Gbps iSCSI, 1 Gbps iSCSI