VERITAS Volume Manager 4.1 Troubleshooting Guide

Recovery from Hardware Failure

Recovery from Failure of a DCO Volume

Chapter 1 29

Automatic recovery depends on being able to import both the source and target disk groups. If

this is not possible (for example, if one of the disk groups has been imported on another host),

perform the following steps to recover the disk group:

Step 1. Use the vxprint command to examine the conﬁguration of both disk groups.

Objects in disk groups whose move is incomplete have their TUTIL0 ﬁelds set to

MOVE.

Step 2. Enter the following command to attempt completion of the move:

# vxdg recover sourcedg

This operation fails if one of the disk groups cannot be imported because it has been

imported on another host or because it does not exist:

vxvm: vxdg: ERROR: diskgroup: Disk group does not exist

If the recovery fails, perform one of the following steps as appropriate.

• If the disk group has been imported on another host, export it from that host,

and import it on the current host. If all the required objects already exist in

either the source or target disk group, use the following command to reset the

MOVE ﬂags in that disk group:

# vxdg -o clean recover diskgroup1

Use the following command on the other disk group to remove the objects that

have TUTIL0 ﬁelds marked as MOVE:

# vxdg -o remove recover diskgroup2

• If only one disk group is available to be imported, use the following command to

reset the MOVE ﬂags on this disk group:

# vxdg -o clean recover diskgroup

Recovery from Failure of a DCO Volume

NOTE The procedures in this section depend on the DCO version number. See the

VERITAS Volume Manager Administrator’s Guide for information about DCO

versioning.