Veritas Volume Manager 5.0 Troubleshooting Guide, HP-UX 11i v3, First Edition, May 2008

Contents
Chapter 1 Recovery from hardware failure
Listing unstartable volumes ................................................................................. 8
Displaying volume and plex states ...................................................................... 8
Understanding the plex state cycle .....................................................................9
Recovering an unstartable mirrored volume ..................................................11
Recovering an unstartable volume with a disabled plex in the RECOVER state
12
Forcibly restarting a disabled volume ..............................................................13
Clearing the failing flag for a disk .....................................................................13
Reattaching failed disks ......................................................................................14
Failures on RAID-5 volumes ..............................................................................15
System failures .............................................................................................15
Disk failures ..................................................................................................16
Default startup recovery process for RAID-5 .........................................17
Recovering a RAID-5 volume .....................................................................18
Recovery after moving RAID-5 subdisks ..................................................20
Starting RAID-5 volumes ............................................................................21
Recovering from incomplete disk group moves ..............................................24
Recovery from failure of a DCO volume ...........................................................25
Recovering a version 0 DCO .......................................................................27
Recovering a version 20 DCO .....................................................................28
Chapter 2 Recovery from failure of instant snapshot operations
Failure of vxsnap prepare ...................................................................................30
Failure of vxsnap make for full-sized instant snapshots ..............................30
Failure of vxsnap make for break-off instant snapshots ...............................31
Failure of vxsnap make for space-optimized instant snapshots ..................31
Failure of vxsnap restore ....................................................................................31
Failure of vxsnap reattach or refresh ...............................................................32
Copy-on-write failure ..........................................................................................32
I/O errors during resynchronization ................................................................33
I/O failure on a DCO volume ..............................................................................33
Chapter 3 Recovering from boot disk failure
VxVM and boot disk failure ................................................................................35