VERITAS Volume Manager 3.5 Troubleshooting Guide (August 2002)

Chapter 1, Recovery from Hardware Failure

Recovery from DCO Volume Failure

5. To snap back the snapshot volume on which you performed a snapclear in the

previous step, use the following command (after using the vxdg move command to

move the snapshot volume back to the original disk group, if necessary):

# vxplex -f -g diskgroup snapback volume snapvol_plex

Note You cannot use vxassist snapback because the snapclear operation removes

the snapshot association information.

The following command sequence demonstrates how to recover the DCO volume that

tracks the top-level volume vol1 in the disk group egdg, and also how to snap back the

snapshot volume, SNAP-vol1, with vol1:

# vxdco -g egdg -o force enable vol1_dco

# vxvol -g egdg start vol1_dco

# vxassist -g egdg snapclear vol1 SNAP-vol1_snp

# vxplex -g egdg snapback vol1 SNAP-vol1-01

Here vol1_dco is the DCO associated with vol1, SNAP-vol1_snp is the snap object

associated with vol1 that points to the snapshot SNAP-vol1, and SNAP-vol1-01 is the

snapshot plex that is snapped back with vol1.

For more information, see the vxassist(1M) and vxdco(1M) manual pages.