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

To recover from the failure of the vxsnap prepare command

◆

Type the following command:

# vxedit [-g diskgroup] rm DCO_volume

Alternatively, the DCO volume is removed automatically when the system is

next restarted. When the DCO volume has been removed, run the vxsnap

prepare command again.

Recovering from the failure of vxsnap make for

full-sized instant snapshots

If a vxsnap make operation fails during the creation of a full-sized instant snapshot,

the snapshot volume may go into the DISABLED state, be marked invalid, and be

rendered unstartable. You can use the following command to verify that the

inst_invalid flag is set to on:

# vxprint [-g diskgroup] -F%inst_invalid snapshot_volume

VxVM usually recovers the snapshot volume without intervention. However, in

certain situations, this recovery may not succeed. If this happens, the DCO volume

must be deleted.

To recover from the failure of the vxsnap make command for full-sized instant

snapshots

Clear the snapshot volume’s tutil0 field. Enter the following command:

# vxmend [-g diskgroup] clear tutil0 snapshot_volume

Unprepare the snapshot volume. Enter the following command:

# vxsnap [-g diskgroup] unprepare snapshot_volume

If the snapshot volume is in DISABLED state, start the snapshot volume.

Enter the following command:

# vxvol [-g diskgroup] start snapshot_volume

Recovering from instant snapshot failure

Recovering from the failure of vxsnap make for full-sized instant snapshots