Hello!
I have just updated my local galaxy instance today to the most recent version (after 3 years without updating).
I had hoped my histories and data would be kept, but when I loaded the new galaxy, while my usage was still recorded as 2.8 Tb, all datasets and histories had disappeared. I tried to look for archives histories, but nothing came.
Is there a way to recover this kind of data? Where are all the data stored within the galaxy path? is it the temp folder? Is there any way to recover that?
It is recommended to update the server incrementally through releases. Why? The data model can change in small ways, and at each update, there is a migration process that moves content old → new. You should still be using backups but each “jump” is smaller this way, and much easier to troubleshoot. Big jumps (skipping releases) are universally problematic.