If the disk is online and invalid, it is simply not yet configured for Veritas. This is redhat I assume - if you can see the disk via fdisk -l and vxddladm then the disk is ok and seen by veritas, but you need to run /etc/vx/bin/vxdisksetup -i /dev/s...
You will see this as a process has a file in that filesystem locked, you may be able to unmount it and remount it but if that does not work (or if that causes the application using that filesystem) a reboot will clear it up.
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Storage Foundation 4.0 Administrator
SCS Storage Foundation 4.0 Administrator