VERITAS Volume Manager 4.1 Troubleshooting Guide

Recovery from Failure of Instant Snapshot Operations

Failure of vxsnap make for Full-Sized Instant Snapshots

Chapter 2 37

Failure of vxsnap make for Full-Sized Instant Snapshots

If a vxsnapmake 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 check that the inst_invalid ﬂag is set to

on:

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

VxVM can usually recover the snapshot volume without intervention. However, in certain

situations, this recovery may not succeed. If this happens, use the following steps to delete the

DCO volume:

1. Use the vxmend command to clear the snapshot volume’s tutil0 ﬁeld:

# vxmend [-g diskgroup] clear tutil0 snapshot_volume

2. Run the following command on the snapshot volume:

# vxsnap [-g diskgroup] unprepare snapshot_volume

3. Prepare the snapshot volume again for snapshot operations:

# vxsnap [-g diskgroup] prepare snapshot_volume