Synology Hyper Backup: "Access to destination denied" after deleting user

I recently deleted a user who had previously created a local Hyper Backup task. This cased a problem with the backup tasks where the Owner has become "Not available" and the backup fails with the error "Access to destination denied". How do I fix this?

3 Answers

Use the File Station app to browse and find the .hbk file. Right click on this file and go to Properties. Change the owner to a new owner who has access to the shared folder that the backup is saved to.

Enable SSH and make connection through PuTTY. Use following command:

sudo chown -R --from=oldUser newUser /volume1/backup/Syno/file.hbk

Open SSH console and change the access rights of the backup destination:

sudo chmod -R 777 /volumeUSB1/usbshare/

This will give read/write access to all users, regardless of the owner or group.

Background: If you create a backup task in the synology app, and run the first backup by clicking the provided button, the destination folder is created with the logged in user as owner (admin in my case), with very limited access rights (644), only the owner has write access. But the scheduled task will run as root user.

(Synology DSM 6.1.7-15284 Update 2, Hyperbackup 2.1.8)