Unmount after backup doesn't work

[m.traeumner (Michael Träumner)]

NethServer Version: 7.9.2009
Module: Backup

I think I have a similar problem to the following thread:

Umount restic backup share - target busy

I get the following mail 14.03.2021, 23:46: umount: /mnt/backup-neth_restic: target is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1)) But checking the backup, it apparently was successfull. At least it seems like: [grafik] But why is the unmount not done? It should unmount the share after the backup, shouldn’t it? Is this a bug? Could it be that because of the size of the backup the unmount can’t take place? What additional info coul…

Since two days I get a mail that it is not possible to unmount the backup location

umount: /mnt/backup-projectmanagement: target is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))

EDIT!!!
If I try to unmount manually, I get the same error. My fault, I navigated to the folder and tried to unmount. So manually unmount works.
I’ve found nothing at messages and backup log.
Has somebody an idea?

[danb35 (Dan)]

I don’t have an idea, but I’m having the same thing happen, also when using Restic for backup.

[m.traeumner (Michael Träumner)]

@m.traeumner

So manually unmount works.

After unmounting it manually once, I didn’t get the mail with the unmount error again. So it is solved for me.