recently had a problem, where I got
ERROR V-5-1-1198 Volume vol1 has no CLEAN or non-volatile ACTIVE plexes
The plex associated with the volume was in RECOVER state. This can happend “if the plex content is out of-date with respect to the volume. This can happen if a disk containing one or more of the plex’s subdisks has been replaced or reattached”. In my case it was caused by a failing disk, that was brought online again later. To recover I did:
# Force the plex into offline state
vxmend -g Data_DG -o force off vol1-01
# Put the plex into stale state
vxmend -g Data_DG on vol1-01
# Put the plex into clean state
vxmend -g Data_DG fix clean vol1-01
# Start the volume
vxvol -g Data_DG startall