Snapshot list (timeline) empty after backup finished

[buhtz]

In context of PR #1688 the contributor reported a bug in a side note.

The snapshot list (aka timeline) in the main window got empty after the backup finished. He said this might happen because there is this unmount step after the backup.

https://github.com/bit-team/backintime/blob/fb864656d7fe9736729f46dfac813733f26539b4/common/snapshots.py#L952-L961

The behavior happened not only in the modified code but also in the "dev" branch. The problem is not reproducible except by the original reporter. We keep this issue open for a while to see if something new came up.

[cgrinham]

Hi @buhtz thanks for opening the issue, I will try to reproduce it this week

[aryoda]

I think this may be a duplicate of #724 and I have provided an "workaround" patch (= does mount/unmount to often to be sure the mount is available).

May also be related to #977

[cgrinham]

I wasn't able to reproduce this currently but the issues @aryoda linked definitely look relevant to what I was doing at the time