Delay shutdown until backup finishes

[typo]

I want to choose "shutdown" in GNOME with the option to wait for Déjà Dup, so that the backup will finish and the system automatically halt regardless of the success of the backup.

[Michael Terry (mterry)]

This is likely not something I would want to implement on the Deja Dup side of things. This sounds like useful functionality in the GNOME shutdown dialog (to wait on any process that has inhibited shutdown).

[tankdriver (stoneraider-deactivatedaccount)]

There is already a mechanism in GNOME providing a similar shutdown behaviour:
When you have unsaved files open (eg. in gedit) and choose Shutdown, then "A Program is still running" window appears.
I think this mechanism would be ideal to "fix" this bug. In this situation, the user can choose to wait for finishing the backup or can choose to shutdown (deja-dup stops, current behaviour).

I made a mockup, screenshot attached.

I have made the experience, that, especially with unity (only a icon for a second), some users simple do not realize, that a backup has been automatically started and is running in the background (which is very good, I think) . And if you do not know that there is a backup in progress, and there is no clue for that at shutdown time --> backup not finished. (Which is very dangerous for backup security, especially for bigger backups)

[Michael Terry (mterry)]

Why is it bad if the backup doesn't finish? It will just be resumed next login.

[tankdriver (stoneraider-deactivatedaccount)]

under some circumstances, for example high backup volume, daily lot of changed data, low bandwith to backup target, slow hardware, low continious uptime of source and deja-dup is set to daily backup. The backup never "really" finishes.

You might say this is a really special individual case, but i had it with a (cheap) 3-year old notebook, 160G Backup-Volume (home), 100 LAN to target(fast server) via SSH.

[typo (gnomeuser8)]

That's the point, tankdriver. Under some circumstances there will be not even one backup, because the process is always interrupted.