On Mon, Apr 29, 2024 at 12:04:16PM -0500, John Groves wrote: > This patch set introduces famfs[1] - a special-purpose fs-dax file system > for sharable disaggregated or fabric-attached memory (FAM). Famfs is not > CXL-specific in anyway way. > > * Famfs creates a simple access method for storing and sharing data in > sharable memory. The memory is exposed and accessed as memory-mappable > dax files. > * Famfs supports multiple hosts mounting the same file system from the > same memory (something existing fs-dax file systems don't do). Yes, but we do already have two filesystems that support shared storage, and are rather more advanced than famfs -- GFS2 and OCFS2. What are the pros and cons of improving either of those to support DAX rather than starting again with a new filesystem?
