Processing storage capacity events in connection with file systems

A system comprising:

• a processor;
• and
• a memory comprising code stored therein that, when executed, performs a method of processing capacity-related event occurrences comprising:
• determining a first occurrence of a low threshold event for a first storage pool, wherein the low threshold event occurs when an amount of free storage in the first storage pool is less than a threshold, wherein a set of one or more virtually provisioned logical devices has physical storage provisioned from the first storage pool and physical storage for a file system is provisioned from the set of one or more virtually provisioned logical devices;
• and
• performing first processing responsive to determining the first occurrence of the low threshold event for the first storage pool, the first processing including performing processing that protects the file system, wherein the first processing includes performing processing to handle the first occurrence of the low space event for the first storage pool, the first processing including remounting the file system as read only, wherein after said remounting, the file system is read only and still has its physical storage provisioned from the first storage pool that experienced the first occurrence of the low threshold event.