Cannot restore backup from Unraid B2 Encrypted to WIndows 11 Machine

Support
#1

I have an Unraid NAS server and I setup automatic weekly encrypted backups to Backblaze B2 storage about 2 years ago for one of my shares. It’s been running fine without issue, but now my array has failed, and I’m trying to get my cloud-backed-up data back as it’s critically important to me (hence the cloud backup, priceless family photo albums, etc).
My unraid server is out of commission (or at least the array is out of commission), so I’ve been downloading all of the data from B2 to my windows PC in the meantime. All of the data in B2 is stored under bucket\Chunks\ and then folders names 00-ff (hexadecimal 2 digits, 00…0f, 10…1f, etc) and then all the files are just gibberish.
I have been googling how to restore the encrypted data (unencrypt it essentiallY), but it’s saying that I need a GPG key, which I can’t find anywhere on the Unraid OS thumb drive.

I really, really would like to unencrypt and save all of my data. I wrote down the storage password/key, but I have no clue about this other ‘key’ file requirement or where to find it. I’ve installed Windows subsystem for linux on my PC and installed Duplicacy through the sudo command. I’ve also downloaded and installed the windows web-GUI Duplicacy, but in both instances I have no idea how to decrypt my data. I have it saved to my windows machine under C:\Users\Bryan\Documents\Chunks\chunks<00-ff folders>.

PLEASE PLEASE HELP!!!

#2

In the web GUI, go to the Storage page and click the plus button at the bottom to create a new storage. In the storage configuration dialog, choose Disk as the storage type and select the storage directory (the location where you copied your B2 data to).

The next dialog will indicate whether the storage is encrypted. You can enter anything for the storage name, but if the storage is encrypted you will need to provide the correct storage password.

After the storage is added, you can now go to the Restore page to restore a previous backup.

#3

Hey there, thanks for the reply.

When I go to the web GUI on my windows machine, I add the directory ‘chunks’ which contains all of the sub-directories named 00-ff, when I hit next, the dialog at the top says “We are going to initialize the storage. You can choose to encrypt the storage by entering a password below. If you don’t want the storage to be encrypted, just leave the password inputs empty”.
I enter ‘chunks’ as the name of the storage and it is done, there is no indication that it knows there’s any data there at all. When I then go to restore, in the Backup IDs field it says ‘No backups found on this storage’.

What am I missing?

#4

I figured it out, I also needed to download the config and snapshots from the B2 container. It’s decrypting now.

My next heart attach, pending review when it finished decrypting, is that it stopped after 51 revisions (51 weeks) and hasn’t run/updated since 2022-09-20!??!?
What on earth could have caused it to stop running after a year? Did my license expire and it never told me or…? I checked that it was running every week for about two months after I set it up and then stopped checking it because it was running perfectly.

#5

Dang that sucks man, sorry to hear - that’s a tough lesson. Hope you’re able to recover data from the original Unraid array (sounds feasible depending on how badly it failed). Also, double check the contents of your B2 storage, coz you may have not copied over all the revisions from the /snapshots directory. (As it sounds like your were manually copying bits of the bucket whereas you prolly shoulda used Duplicacy directly on B2 for the restore.)

In future, always use an external uptime service - e.g. https://healthchecks.io/ - because the system that runs the backup software may silently fail to run it, and TEST restores regularly. Also remember: Two is one, and one is none (follow 3-2-1). GL.