Bug 268320

Comment 1 Graham Perrin 2022-12-12 03:18:14 UTC

(In reply to fbsd470 from comment #0)

> … two entries in locations, one for /dev/da1 and one for /dev/da1p1. …

What are the mount points? hier(7) draws attention to: 

/media/

<https://www.freebsd.org/cgi/man.cgi?query=hier&sektion=7&manpath=FreeBSD>


What's reported by the following command? 

sysrc -f /etc/rc.conf devfs_system_ruleset


Compare the content of your    /etc/devfs.rules    with the EXAMPLES near the foot of devfs.rules(5). 

<https://www.freebsd.org/cgi/man.cgi?query=devfs.rules&sektion=5&manpath=FreeBSD>

Comment 2 Gleb Popov 2022-12-12 04:31:47 UTC

Do you have fuse kernel module loading at the boot?

Created attachment 238726 [details]
Screenshot of Thunar

(In reply to Graham Perrin from comment #1)

Hi, here some additional information:

$ mount
/dev/da0p2 on / (ufs, local, soft-updates, journaled soft-updates)
devfs on /dev (devfs)
/dev/fuse on /media/Kingston_DataTraveler_3.0_4CEDFB790E84F541783D01D2 (fusefs)

$ cd /media
$ ls -l
total 32
drwxrwxrwx  1 fbsd  wheel  32768  1 Jan.  1970 Kingston_DataTraveler_3.0_4CEDFB790E84F541783D01D2

$ sysrc -f /etc/rc.conf devfs_system_ruleset
devfs_system_ruleset: system

$ cat /etc/devfs.rules
[system=10]
add path 'usb/*' mode 0660 group operator
add path 'md*' mode 0660 group operator
add path 'cd*' mode 0660 group operator
add path 'pass*' mode 0660 group operator
add path 'xpt*' mode 0660 group operator
add path 'da*' mode 0660 group operator

$ id
uid=1001(fbsd) gid=1001(fbsd) groups=1001(fbsd),0(wheel),5(operator),44(video),920(vboxusers)

$ cat /etc/sysctl.conf
...
vfs.usermount=1

(In reply to Gleb Popov from comment #2)

Hi, fuse module is loaded by rc.conf:

$ cat /boot/loader.conf
autoboot_delay="1"
boot_mute="YES"
loader_logo="none"


$ cat /etc/rc.conf
...
dbus_enable="YES"
xdm_enable="YES"
kld_list="fusefs"
background_dhclient="YES"
cupsd_enable="YES"
devfs_system_ruleset="system"

Comment 6 Gleb Popov 2022-12-12 13:15:17 UTC

This is certainly strange - you even have vfs.usermount=1.

To rule out Xfce bugs, can you please try unmounting with manual dbus call? You can do that with qdbus (console) or qdbusviewer (GUI) utilities.

(In reply to Gleb Popov from comment #6)

OK, I have installed qdbusviewer. But I have no idea how to perform a unmount with manual dbus call.
Can you help me with this?

Comment 8 Gleb Popov 2022-12-12 14:36:53 UTC

Switch to the "System" tab, find org.freedesktop.UDisks2 service, select it. In the right window go to /org/freedesktop/UDisks2/block_devices/your_device, find Unmount method, click it to call it.

Thank you for the instructions. Unmounting with manual dbus call works, qdbusviewer says:

Received reply from:1.6
 (no arguments)

In addition the subfolder "Kingston_DataTraveler_3.0_4CEDFB790E84F541783D01D2" of /media is removed.

Comment 10 Gleb Popov 2022-12-12 15:07:22 UTC

Then the problem is with Xfce, Thunar or some its internal libraries.

Comment 11 Graham Perrin 2022-12-12 17:21:53 UTC

(In reply to fbsd470 from comment #5)

> kld_list="fusefs"

Do you have more than one kld_list line in the file?

(In reply to Graham Perrin from comment #11)

no, just one.

(In reply to Gleb Popov from comment #10)

Yes, seems you're right.

As a sort of workaround I want to create a small Thunar-Custom-Actions script for unmounting fuse file systems.
I have tried dbus-send and qdbus-qt5, but I can't make it. I have no idea what the args parameter should look like.

So far I have:
/usr/local/bin/qdbus-qt5 --system org.freedesktop.UDisks2 /org/freedesktop/UDisks2/block_devices/da1 org.freedesktop.UDisks2.Filesystem.Unmount

You mentioned a manual call with qdbus above. Could you give me a hint?

Many thanks in advance.

Comment 14 Gleb Popov 2022-12-14 13:50:51 UTC

(In reply to fbsd470 from comment #13)
Reading the qdbus-qt5 source, it seem impossible to call .Unmount :<

I guess, you'll have to come up with an incantation for dbus-send or/and open an issue upstream about the original bug.

I did some additional "investigation" with dbus-monitor. Unmounting a FAT32 formatted USB device shows:

method call time=1671004956.095305 sender=:1.5 -> destination=:1.6 serial=10 path=/org/freedesktop/UDisks2/block_devices/da1s1; interface=org.freedesktop.UDisks2.Filesystem; member=Unmount
   array [
   ]
signal time=1671004956.121848 sender=:1.6 -> destination=(null destination) serial=17 path=/org/freedesktop/UDisks2/block_devices/da1s1; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged
   string "org.freedesktop.UDisks2.Filesystem"
   array [
      dict entry(
         string "MountPoints"
         variant             array [
            ]
      )
   ]
   array [
   ]
...

When unmountig a USB device with exFAT/NTFS (fuse) file system the first part is completely missing, there is no call for the Unmount method.
So in the case of a fuse file system Thunar or gvfs seems to handle the unmount process completely different.
I'm afraid there is a "bug" deep inside Thunar or gvfs.

Anyway, thank you very much for your support :-)

(In reply to fbsd470 from comment #15)

forgot to mention: I monitored unmounting as root

Comment 17 Gleb Popov 2022-12-17 16:24:06 UTC

Closing this as not our bug.

Note that Xfce 4.8 was committed recently, you might want to check of this problem is fixed in the new release.