Hi Steve,
I dont know that you can do that dynamically, maybe a NTAP guy can answer? However there are a couple of auto features that might be of interest:
1a. If you use snapshots in that volume you could consider using less snapshots and also use snap autodelete. Deleting snapshots should free up inodes. I havent tried what I am mentioning here, just putting it out there. One of the challenges with this is that once a snapshot has been deleted, depending on various factors as workload etc, it can take some time to get the freed space back.
1b. Use less snapshots as mentioned, without snap autodelete should also free up inodes. This would need to be tuned and if implemented properly will free up
space ahead of you getting into problems.
2. The other way to add inodes is to auto grow the volumes, but again, I m not sure if the volume will ONLY grow when its run out of space, which is typically does. Or if it will autogrown once it runs out of inodes. From experience I have only seem them autogrown when they run out of space. This would add inodes straight
away though.
Hope this helps, I reckon it ll draw some debate for starters, that can always be helpful
Eric