Automatic mount of a APFS USB stick

[samiel60]

I'm trying to mount an APFS-formatted USB stick on Debian Linux Testing (Forky) using two methods. The first failed, and the second resulted in a strange outcome.

1. Since Debian mounts drives on the fly with Udisk2, I created a rule in:
   /etc/udisks2/mount_options.conf
   with this content:

[apfs]
defaults=readwrite,allow_other
allowed=readwrite,ro,allow_other,uid,gid,umask,dmask,fmask

but the drive doesn't mount at all.
2) Alternatively, I created the rule for udev:
/etc/udev/rules.d/99-apfs.rules
with this content:

ACTION=="add", KERNEL=="sd*[0-9]", ENV{ID_FS_TYPE}=="apfs", \
RUN+="/usr/bin/systemd-mount -o readwrite --no-block /dev/%k /media/apfs"

In this case, the USB stick is mounted twice, the first in:
/media/apfs
and the second in:
/run/media/<user>/<UUID>
In the first one, I can actually write, but then I have to unmount the device only as root. I assume udisk2 mounts it automatically the first time, and udev mounts it a second time with the parameters I passed.
Do you know of a more functional way to achieve my goal?
Thanks
m

[eafer]

I don't know that much about udisks, sorry. I know that it doesn't get along very well with apfs because of the subvolumes. Does this stuff work for you on other filesystem types? If so, then it might be some sort of bug on our end.

[samiel60]

After countless attempts, I tried tinkering with Cinnamon's "System Settings - Disks" by making some changes to the "More Options - Change Mount Options" item (the icon looks like a small gear), and I succeeded. Sometimes we start out with the idea of ​​never using the graphical interface, but in this case, it worked.
This shook my confidence, because changes made that way end up being written by the system to /etc/fstab, where I was convinced that only the devices that should be mounted at boot time needed to be specified.
A few more corrections in /etc/fstab and I arrived at the following line:
/dev/disk/by-id/usb-Corsair_Voyager_GT_3.0_070889390C1C2827-0:0-part1 /media/corsair auto nosuid,nodev,nofail,user,readwrite,x-gvfs-show,x-gvfs-name=Corsair 0 0
Where the device can also be identified by UUID and the destination directory is completely optional. I created and entered /media/corsair here as the destination.
The fact is that when I insert the USB stick, it mounts: 1) automatically; 2) as user (so I can also unmount it as a user, whereas before I had to be root every time to do so); 3) in read/write mode; 4) with the device name I choose.
I tested the linux-apfs-rw driver by copying 80 GB from Debian and then checking it on the data MacBook, and everything seems to work perfectly.
I hope this will be useful to Debian Linux users who need to use APFS devices.
m