Forwarding operations to bypass persistent memory

A system comprising:

• persistent memory managed by a persistent memory tier of a first node;
• storage managed by a file system tier of the first node,
• wherein the file system tier is configured to implement snapshot operations upon data stored across both the persistent memory and the storage;
• a frontend file system providing a client device with access to the data stored across the persistent memory by a persistent memory file system and across the storage by a storage file system;
• and
• the persistent memory file system that:
• executes a modify operation upon a target object stored within the persistent memory based upon forwarding not being enabled for the target object;
• and
• forwards the modify operation to the storage file system for execution upon the storage based upon forwarding being enabled for the target object.

A method, comprising:

• managing, by a persistent memory tier, a persistent memory using a persistent memory file system;
• managing, by a file system tier, storage using a storage file system;
• providing, by a frontend file system, a client with access to data stored across the persistent memory by the persistent memory file system and across the storage by the storage file system;
• implementing, by the file system tier, a snapshot operation for the data stored across the persistent memory by the persistent memory file system and across the storage by the storage file system;
• identify blocks within the persistent memory file system that comprise more up-to-date data than corresponding blocks within the storage file system;
• and
• notifying, by the persistent memory tier, the storage file system that the corresponding blocks are stale.

A non-transitory machine readable medium comprising instructions, which when executed by one or more machines, causes the one or more machines to:

• manage, by a persistent memory tier, a persistent memory using a persistent memory file system;
• manage, by a file system tier, storage using a storage file system;
• provide, by a frontend file system, a client with access to data stored across the persistent memory by the persistent memory file system and across the storage by the storage file system;
• implement, by the file system tier, a snapshot operation for the data stored across the persistent memory by the persistent memory file system and across the storage by the storage file system;
• and
• forward, by the persistent memory file system, modify operations to the storage file system as forwarded operations for execution upon the storage based upon forwarding being enabled for objects targeted by the modify operations.