On Fri, 17 Mar 2023, at 09:42, Alessandro Boem wrote:
> File system was created with version 3.3.2 and that's the version in use at
> the time of crash.
[...]
>
> Ok nice. I ran s3qladm download-metadata s3c://r1-it.storage.cloud.it/bdrive
> --authfile=/etc/s3ql.authinfo --cachedir=/var/cache/s3ql/bdrive/
> but I got the same error: ERROR: File system revision needs upgrade (or
> backend data is corrupted)
If you really did not change S3QL versions, then this sounds as if the
s3ql_passphrase object in the cloud has somehow been corrupted.
I have no idea how this could possibly happen (since S3QL never writes to it
after mkfs), nor how it could be related to a local system crash.
Maybe check if there's a backup of this object somewhere? Otherwise you can use
's3qladm recover-key' to restore this object from your offline copy of the
master key (which you hopefully created at mkfs time).
This object contains the master key, so without it you can't decrypt any of the
other objects.
Best,
-Nikolaus
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