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Recovering a version 20 DCO volume

 To recover a version 20 DCO volume

1. Correct the problem that caused the I/O failure.
2. Use the vxsnap command to dissociate each full-sized instant snapshot volume that is associated with the volume:

   # vxsnap [-g diskgroup] dis snapvol

   For the example output, the command would take this form:

   # vxsnap -g mydg dis SNAP-vol1

3. Unprepare the volume using the following command:

   # vxsnap [-g diskgroup] unprepare volume

   For the example output, the command would take this form:

   # vxsnap -g mydg unprepare vol1

4. Start the volume using the vxvol command:

   # vxvol [-g diskgroup] start volume

   For the example output, the command would take this form:

   # vxvol -g mydg start vol1

5. Prepare the volume again using the following command:

   # vxsnap [-g diskgroup] prepare volume [ndcomirs=number] \

     [regionsize=size] [drl=yes|no|sequential] \

     [storage_attribute ...]

   For the example output, the command might take this form:

   # vxsnap -g mydg prepare vol1 ndcomirs=2 drl=yes

   This adds a DCO volume with 2 plexes, and also enables DRL and FastResync (if licensed).

   See the Veritas Volume Manager Administrator's Guide.

   See the vxsnap(1M) manual page.