Post Syndicated from original https://lwn.net/Articles/932415/

In the filesystem track of the
2023 Linux Storage, Filesystem,
Memory-Management and BPF Summit, Amir Goldstein led a session on using
fanotify
for hierarchical
storage management (HSM). Linux had some support for HSM in the XFS
filesystem’s implementation of the data management API (DMAPI),
but that code was removed
back in 2010. Goldstein has done some work
on using fanotify for HSM features, but he has run into some problems with
deadlocks that he wanted to discuss with attendees.