VERITAS Volume Manager 4.1 Troubleshooting Guide

Recovery from Failure of Instant Snapshot Operations
I/O Failure on a DCO Volume
Chapter 244
I/O Failure on a DCO Volume
If an I/O failure occurs on a DCO volume, its FastResync maps and DRL log cannot be
accessed, and the DCO volume is marked with the BADLOG flag. DRL logging and recovery,
and instant snapshot operations are not possible with the volume until you recover its DCO
volume using the procedure described in“Recovering a Version 20 DCO” on page 32 .
NOTE If the I/O failure also affects the data volume, it must be recovered before its
DCO volume can be recovered.