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haertig · 03-15-2022, 03:49 PM

Thanks for the answers!

Now, a related question that probably doesn't deserve it's own thread:

How does everyone "prove in" a new version of Calibre? Do you simply install two versions of Calibre on the same computer? Does Calibre even allow that? - I would use completely separate data directories. Do you run the "test" version in a virtual machine or on an entirely separate computer? In the past, I have simply trusted that the new version would work fine, and upgraded right over my old version. But that was always minor dot releases where I didn't expect big changes (plus, I keep extensive daily backups of my computers that I could restore from as a last resort).

But now I'm looking at moving from Calibre 3.48 to Calibre 5.38 (on a Linux box, if that matters) ... quite the jump in versions. For large jumps like this, I don't typically use my "trust" method like I do for dot releases. I prefer a bit more testing/verification. In my case specifically, I am using Calibre-Web as my online access as opposed to the web server built into Calibre itself. So I want to verify that Calibre-Web will not be confused by any new database layout (if that occurred) introduced in Calibre 4 or 5.

Running two versions of Calibre on the same computer (using different data directories) would be the most convenient, but I could do the VM or separate computer route if that's more advisable.

03-15-2022, 03:49 PM	#4
haertig Wizard Posts: 1,912 Karma: 32620480 Join Date: Sep 2017 Device: PW3, Galaxy Tab A9+, Moto G7	Thanks for the answers! Now, a related question that probably doesn't deserve it's own thread: How does everyone "prove in" a new version of Calibre? Do you simply install two versions of Calibre on the same computer? Does Calibre even allow that? - I would use completely separate data directories. Do you run the "test" version in a virtual machine or on an entirely separate computer? In the past, I have simply trusted that the new version would work fine, and upgraded right over my old version. But that was always minor dot releases where I didn't expect big changes (plus, I keep extensive daily backups of my computers that I could restore from as a last resort). But now I'm looking at moving from Calibre 3.48 to Calibre 5.38 (on a Linux box, if that matters) ... quite the jump in versions. For large jumps like this, I don't typically use my "trust" method like I do for dot releases. I prefer a bit more testing/verification. In my case specifically, I am using Calibre-Web as my online access as opposed to the web server built into Calibre itself. So I want to verify that Calibre-Web will not be confused by any new database layout (if that occurred) introduced in Calibre 4 or 5. Running two versions of Calibre on the same computer (using different data directories) would be the most convenient, but I could do the VM or separate computer route if that's more advisable.