WebDAV as backup target

For raspiBackup, davfs must be used because it mounts the WebDAV drive in the same way as it is done for all other drives in Linux. It can then be accessed both via the command line and with a file manager. Other tools for accessing WebDAV cannot be used.

Installation of davfs2

sudo apt install davfs2

Create the mountpoint

sudo mkdir -p /remote/webdav

Define the access data

• /etc/davfs2/secrets

  /remote/webdav <userid> <password>
  

Make access data readable only for the user pi

sudo chmod 600 /etc/davfs2/secrets
sudo chown root:root /etc/davfs2/secrets

Create entries in /etc/fstab

# t-online
https://webdav.mediencenter.t-online.de        /remote/webdav   davfs   rw,noauto,user  0       0 
# 1&1
https://sd2dav.1und1.de          /remote/webdav   davfs   rw,noauto,user  0       0
# ownCloud
https://cloud/owncloud/remote.php/webdav          /remote/webdav   davfs   rw,noauto,user  0       0
# seafile
https://seafile/seafdav       /remote/webdav  davfs   rw,noauto,user  0       0

Since davfs stores the program for mounting in /usr/sbin/mount.davfs, but mount expects it in /sbin, you have to set up the following link:

sudo ln -s /usr/sbin/mount.davfs /sbin/mount.davfs

Due to an error in the WebDAV implementation at t-online, no files can be created. The message always appears that the file exists - although it does not. Therefore, the following line must be inserted into /etc/davfs2/davfs2.conf to switch off the locks.

use_locks 0

If you want to mount the disk space automatically when booting the system, the noauto in the /etc/fstab must be removed. This is not necessary for raspiBackup if the dynamicmount option is used.