Errors and messages ........... 117
Understanding error codes ........ 117
Understanding event IDs ........ 120
File module hardware problems ....... 121
Removing and replacing parts for the 2073-720 122
How to reset/reboot server iMM interface... 182
File module software problems ....... 182
Logical devices and physical port locations for a
2073-720 file module .......... 182
Management node role failover procedures .. 183
Checking CTDB health .......... 187
Checking the GPFS file system mount on each file
module ............... 189
Identifying created and mounted file system
mounts .............. 189
Resolving problems with missing mounted file
systems .............. 190
Resolving stale NFS file systems ...... 191
Checking user and server authentication issues .. 191
Resolving the “Missing SRV record in DNS”
error ............... 192
If “netgroup” functionality with NIS or LDAP is
not working ............. 192
Possible misconfiguration on the Storwize V7000
Unified system ............ 192
Trouble accessing exports when authentication
server and clientStorwize V7000 Unified
configurations are correct ........ 193
Resolving access failures on an Storwize V7000
Unified system with a subordinate ID map role . 193
Checking client access .......... 194
Checking network interface availability..... 195
Recovering a GPFS file system ....... 196
Resolving an ANS1267E error ........ 197
Resolving issues reported by lshealth ..... 197
Error for “MGMTNODE_REPL_STATE ERROR
DATABASE_REPLICATION_FAILED” .... 197
Resolving network errors ......... 198
Resolving full condition for GPFS file system... 200
Analyzing GPFS logs ........... 200
Synchronizing time on the file modules .... 201
Chapter 5. Control enclosure..... 203
Storwize V7000 system interfaces....... 203
Service assistant interface ........ 203
Storage system command-line interface.... 205
Service command-line interface ...... 206
USB flash drive and Initialization tool interface 206
Starting statistics collection ......... 215
Event reporting............. 226
Understanding events ......... 226
Event notifications........... 228
Power-on self-test ........... 229
Understanding event codes........ 229
Understanding the error codes ...... 229
Viewing logs and traces ......... 230
Battery operation for the control enclosure ... 230
Battery operation for Storwize V7000 Gen2
control enclosures ........... 230
Battery operation for Storwize V7000 Unified
Gen1 control enclosures ......... 232
Understanding the medium errors and bad blocks 235
Resolving a problem ........... 236
Start here: Use the management GUI
recommended actions ......... 236
Problem: Management IP address unknown .. 237
Problem: Unable to connect to the management
GUI ............... 237
Problem: Unable to log on to the management
GUI ............... 240
Problem: Cannot initialize or create a clustered
system .............. 240
Problem: Node canister service IP address
unknown.............. 242
Problem: Cannot connect to the service assistant 245
Problem: Management GUI or service assistant
does not display correctly ........ 246
Problem: A node canister has a location node
error ............... 246
Problem: SAS cabling not valid ...... 246
Problem: New expansion enclosure not detected 248
Problem: Control enclosure not detected ... 249
Problem: Mirrored volume copies no longer
identical .............. 249
Problem: Command file not processed from USB
flash drive ............. 249
Procedure: Resetting superuser password ... 250
Procedure: Identifying which enclosure or
canister to service ........... 251
Procedure: Checking the status of your system 254
Procedure: Getting node canister and system
information using the service assistant .... 254
Procedure: Getting node canister and system
information using a USB flash drive..... 255
Procedure: Understanding the system status
using the LEDs ............ 255
Procedure: Finding the status of Ethernet
connections ............. 267
Procedure: Finding the status of Storwize V7000
Gen2 SAS connections ......... 269
Procedure: Removing system data from a node
canister .............. 270
Procedure: Deleting a system completely ... 270
Procedure: Fixing node errors ....... 271
Procedure: Changing the service IP address of a
node canister ............ 271
Procedure: Initializing a clustered system with a
USB flash drive without using the initialization
tool................ 272
Procedure: Initializing a clustered system using
the service assistant .......... 273
Procedure: Accessing the service assistant from
the technician port .......... 275
Procedure: Accessing aStorwize V7000 Gen1
canister using a directly attached Ethernet cable . 276
Problem: Reseating a node canister ..... 277
Procedure: Removing a Storwize V7000 Gen2
node canister ............ 279
Procedure: Powering off your system .... 280
Procedure: Powering on the Storwize V7000
Gen2 system............. 281
iv Storwize V7000 Unified: Problem Determination Guide 2073-720
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