Spurious warning 'unknown argument ignored: lazytime'

[hholst80]

The latest release of fuse-overlayfs (1.13-dev) prints out an annoying warning:

# fuse-overlayfs --version
unknown argument ignored: lazytime
fuse-overlayfs: version 1.13-dev
FUSE library version 3.10.5
using FUSE kernel interface version 7.31
fusermount3 version: 3.16.2

It seems hard coded somewhere, and should probably be removed, or at least be provisioned only after it has been validated to be compatible with the library/other APIs.

fuse-overlayfs/main.c

Line 5643 in 147609b

newargv[1] = "-odefault_permissions,allow_other,suid,noatime,lazytime";

# fuse-overlayfs -h
unknown argument ignored: lazytime
usage: fuse-overlayfs [options] <mountpoint>

    -h   --help            print help
    -V   --version         print version
    -d   -o debug          enable debug output (implies -f)
    -f                     foreground operation
    -s                     disable multi-threaded operation
    -o clone_fd            use separate fuse device fd for each thread
                           (may improve performance)
    -o max_idle_threads    the maximum number of idle worker threads
                           allowed (default: 10)
    -o allow_other         allow access by all users
    -o allow_root          allow access by root
    -o auto_unmount        auto unmount on process termination

[hholst80]

This flag is likely not supported by the FUSE mount frontend itself but supported by mount. If the lazy option is essential for user workflows (how can it be since its not working) then we should not use fusemount rather use mount directly. Or, let the user remount with the lazy flag.

https://www.man7.org/linux/man-pages/man2/mount.2.html

https://www.man7.org/linux/man-pages/man8/mount.fuse3.8.html

https://www.man7.org/linux/man-pages/man1/fusermount3.1.html