Re: Compare backup with actual data on client

Am 14.02.2025 um 20:25 schrieb Bill Arlofski via Bacula-users:
> On 2/14/25 12:14 PM, Sebastian Suchanek wrote:

Hi Bill!

 >> [...]
>> Is there any way to do such a comparison and get a list of files where
>> the backuped data differs from the current filesystem? (So that I can
>> manually check which files are *not* supposed to have changed since the
>> last backup and restore them, while leaving files that have been changed
>> on purpose untouched.) And, if yes, how can I do that?
>> [...]
> 
> Sounds like you are looking for Bacula's `Verify` job with level `DiskToCatalog`.
> [...]
Thanks for your answer. It helped, however a bit indirectly. ;-)

Concerning the underlying problem, given the error messages I got, I 
suspected "libcrypto.so.1.1" and/or "libssl.so.1.1" to be either 
corrupted or missing. Even before posting my original question here on 
the mailing list, I tried to restore those two files from the backup, 
but didn't have success. (I'll get back to that in a minute.)

Following your hint, I created the following Bacula job and ran it:

--------------------- 8< ---------------------

Job {
   Name = "VerifyFiles"
   Type = Verify
   Level = DiskToCatalog
   Client = ClientInQuestion
   FileSet = "Fileset from Backup"
   Storage = LTO-Drive
   Messages = Standard
   Pool = LTO1
}

--------------------- 8< ---------------------

The job resulted in showing up some unsuspicious files like logfiles as 
being different, but *none* of the two files mentioned above. However, 
it did reveal that I messed up the restore attempt I mentioned earlier 
and accidentaly restored the two files in the wrong directory. So I 
re-ran the restore operation, this time making sure that the files went 
to the correct location. Et voilà, the system is now perfectly working 
again. So obviously at least one of the two files were the root cause of 
the original problem.
Now I'm wondering: why didn't the file(s) show up during the verify job 
run? (BTW, for the verify job run, now tapes were loaded, so obviously 
at least the "full" content of the files on the system in question were 
not checked.) What did I do wrong?


Regards

Sebastian


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