654085 - Firefox should store at least two session backups

Status: RESOLVED DUPLICATE of bug 558425

(Firefox :: Session Restore, enhancement)

Description

[Michał Gołębiowski-Owczarek [:mgol]]

User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Build Identifier: Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

Currently Firefox stores a backup session file in sessionstore.bak and it's only one session. I think there should be at least an option to make the browser remember at least last two or even more sessions.

I recently suffered from this in this way:
1) My OS crashed and in this way Firefox was incorrectly closed
2) I rebooted and went away from the computer
3) Another person run Firefox and ignored a tab about restoring session (now my session isn't in sessionstore.js but still is in sessionstore.bak)
4) This person closed the browser (now my sessionstore.bak is gone)
5) I have no way to recover my session, including Panorama groups etc.

Sth similar to Session Manager add-on:
https://addons.mozilla.org/en-US/firefox/addon/session-manager/
would be useful. I don't know if it correctly supports Panorama, though (and I really don't want to try it with my data...).

I used to use Tab Mix Plus session manager but it doesn't allow selective restoring and doesn't support Panorama atm. I thought it'll be better to use original Mozilla session manager as it'll always manage those new features correctly. This one problem is (and always was) my only though against the built-in feature...

Reproducible: Always

Steps to Reproduce:
1. Make Firefox crash
2. Restart the browser
3. Close the browser without confirming the will to restore last session

Actual Results:  
A user has no way to recover lost session any more.

Expected Results:  
A user should have a way of restoring older sessions as well.