SMB as backup destination

It is actually recommended to use NFS instead of SMB to store the backups from raspiBackup. Then you can use backup type rsync and only ever create a delta backup instead of a full backup, which is necessary with SMB. But there may still be reasons why you want to store a raspiBackup on an SMB drive.

The following describes how to configure this on a Synology is to be configured. AutoFS is also configured. If autoFS is not already used, the same behavior can be achieved with raspiBackup using the option DynamicMount to achieve the same behavior.

To automatically mount the SMB backup partition when raspiBackup uses it uses it, a shared folder must be defined and configured on the NAS.

In the following instructions, the shared folder name "raspiBackup" is assumed.

Installation of autoFS

sudo apt install autofs

AutoFS configuration

• /etc/auto.cifs

  synoRaspiBackup -fstype=cifs,rw,credentials=/home/pi/scratch.conf,cache=none,iocharset=utf8,file_mode=0664,dir_mode=0775,vers=3.1.1,soft,iocharset=utf8 ://<synologyIP>/raspiBackup
  

This defines an SMB shared folder with the name raspiBackup is defined on the NAS with the mountpoint synoRaspiBackup.

• /etc/auto.master.

  /mnt /etc/auto.cifs --timeout=600 --ghost
  

ensures that the SMB partition of the NAS in `/mnt/synoRaspiBackup is automatically mounted as soon as it is accessed.

Definition of the SMB access data

• /home/pi/raspiBackup.conf

  user=<AdministratorName>
  password=<AdministratorPassword>
  

Make access data readable only for the user pi

chmod 600 /home/pi/raspiBackup.conf

Definition of the SMB partition as backup partition in raspiBackup

Call the raspiBackupInstaller with sudo raspiBackupInstallUI and definition of /mnt/synoRaspiBackup (M3 -> C2)