Explore the challenges and opportunities presented by persistent memory devices in this Linux Plumbers Conference talk. Gain insights into the characteristics of directly addressable non-volatile storage and participate in a discussion on optimal file system implementation approaches. Examine hardware overviews, latency considerations, and overhead measurements while delving into topics such as NVM Programming, NVMe vs PCM, and persistent memory-aware filesystems. Investigate the software stack requirements, application stack changes, and the implications of cache coherence in persistent memory. Analyze various aspects including mmap API, OS-level desires, logging techniques, atomic operations, and data structures in the context of persistence and durability. Evaluate the PMFS (Persistent Memory File System) and consider the best approaches for leveraging this emerging technology in storage systems.