Be aware that just because you have 100GB provisioned does not mean that the BigIP will see 100GB. Some of that is reserved for a second boot slot so you can upgrade the device without redeploying. Having said that, you indicate that you followed 14952, but don't give any technical details that would help us to help you. If you are uncomfortable giving that information here, please open a support ticket. Otherwise as a start, what is the output of:
tmsh show /sys disk directory
Also, do you get a specific error when you try to reprovision (check /var/log/ltm)?
Nimbostratus
