Synoloy NAS does not support fuse3

ncw · March 22, 2023, 3:56pm

rclone mount isn't linked agaiinst libfuse3 - it reimplements it in the bazil/fuse library.

So the kernel needs to support the fuse3 interface. However this has been standard for > 10 years now I understand.

Here is the upstream commit which changed it to use fusermount3 - it has some interesting points there.

github.com/bazil/fuse

Switch to calling fusermount3

committed 08:01PM - 09 Dec 22 UTC

tv42

+4 -4

The C FUSE library maintainers released the new major version v3 in 2013, and as… part of that also renamed the system tool that has nothing to do with whether applications use the C library or not. (If anything, it's tied to the kernel version being run, and Linux is excellent about not breaking userspace ABI compatibility.) Apparently, some distros are starting to drop libfuse v2, and in the process only provide `fusermount3` instead of the slightly more sanely named `fusermount`. (Historically, users needed to run the `fusermount` tool instead of the regular `umount` to unmount FUSE filesystems, but apparently that obscure historical misdesign has been fixed, and `umount` works. Personally, I dislike the design where mounts are SUID userspace fiddly things that attempt to duplicate kernel data structures in `/etc/mtab`, prefer hosts where `/etc/mtab` is obsoleted by `/proc/mounts` etc, and think the `user_id` comparison should live in the kernel.) Apparently the two versions of `fusermount` are fully compatible, but instead of maintaining it as a separate system tool, belonging more to something like coreutils or the kernel, libfuse maintainers consider it a part of the C libfuse library, thus making all other FUSE server implementations second class citizens. Oh well. Suck it up, go with the flow, and call `fusermount3`. For now, we're choosing not to include a backwards compatible path, trying both names. `fusermount3` apparently has been a thing since 2013, so you've had plenty of time to get it installed. If this causes issues, please let us know, backwards compatibility can be added as needed. Closes #275

This bit in particular

Apparently the two versions of fusermount are fully compatible

So it seems symlinking is a good solution!

I made an upstream issue about this here: fusermount3 not found on all systems - fall back to fusermount? · Issue #298 · bazil/fuse · GitHub