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Berry Tsakala
Asked: 2020-08-27 01:36:39 +0800 CST

un-mounting a davfs2 fails without any error (no open files)

  • 772

How can I dismount or debug why this mount can't be unmounted? background:

  • Kubuntu 20.04
  • lsof $mountpoint => empty list
  • all terminal windows are closed
  • all other apps are closed.
  • a webdav davfs $url is mounted on $mountpoint via: sudo mount -t davfs https://server/path $mp

When I try to unmount, nothing happens, and no errors are displayed:

~$ sudo umount $mountpoint
~$

But $mountpoint is still mounted, No errors were given.

How can I unnmount it without a full restart?

How can I debug this situation?

kubuntu nextcloud 20.04 davfs2

1 Answers

  1. Same problem here. I was not able to unmount the webdav folder with umount. No error reported, but the resource was not unmounted.

    Reporting all mounts shows the webdav resource as fuse type and not davfs, as I was expecting. That triggered the solution.

    mount

    (...)
https://server/nextcloud/remote.php/dav/files/geonext/ on /home/qgis/nextcloud type fuse (rw,nosuid,nodev,noexec,relatime,user_id=1002,group_id=1002,allow_other,max_read=16384,uid=1002,gid=1002,user=qgis,helper=davfs)

    Solution

    fusermount -u /home/qgis/nextcloud

    The resource was unmounted.

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