If an error is encountered while performing an internal resynchronization of a volume's snapshot, the snapshot volume goes into the INVALID state, and is made inaccessible for I/O and instant snapshot operations.
To recover from copy-on-write failure
vxsnapcommand to dissociate the volume from the snapshot hierarchy:
] [drl=yes|no|sequential] \
The volume can now be used again for snapshot operations.
Alternatively, you can remove the snapshot volume and recreate it if required.