Veritas Volume Manager 5.1 SP1 Troubleshooting Guide (5900-1507, April 2011)

Recovering from copy-on-write failure ............................................. 39
Recovering from I/O errors during resynchronization ........................ 40
Recovering from I/O failure on a DCO volume ................................... 40
Chapter 3 Recovering from boot disk failure ................................... 41
VxVM and boot disk failure ............................................................ 41
Recovering a system by booting from a VxVM root disk mirror ............. 42
Recovering a system by booting from recovery media ......................... 42
Starting VxVM after booting from recovery media ....................... 43
Recovering the root volume after VxVM emergency startup ........... 44
Fixing a missing or corrupt /etc/vx/volboot file ........................... 45
Initiating VxVM Maintenance Mode Boot ......................................... 45
Recovery by reinstallation ............................................................. 46
Recovering a system with VxVM boot disk under native
multi-pathing ........................................................................ 47
Chapter 4 Logging commands and transactions ............................. 49
Command logs ............................................................................. 49
Transaction logs .......................................................................... 51
Association of command and transaction logs ................................... 53
Associating CVM commands issued from slave to master node ............. 53
Chapter 5 Backing up and restoring disk group
configurations ................................................................ 57
About disk group configuration backup ............................................ 57
Backing up a disk group configuration ............................................. 58
Restoring a disk group configuration ............................................... 59
Resolving conflicting backups for a disk group ............................ 61
Chapter 6 Restoring a previous array support library .................... 63
Downgrading the array support ...................................................... 63
Chapter 7 Error messages .................................................................... 65
About error messages ................................................................... 65
How error messages are logged ....................................................... 65
Configuring logging in the startup script .................................... 66
Types of messages ........................................................................ 67
Messages .............................................................................. 69
Index ................................................................................................................... 123
Contents8