Is it possible to verify backup data integrity?

Asked by Joshua

Is there a built in function to check the backup files for errors without actually having to restore them all?

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Michael Terry (mterry) said :

No. Though that's an interesting idea.

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Aldo "xoen" Giambelluca (xoen) said :

Yesterday I've moved my backups from a local partition to an external disk and I've used md5sum to check the files.

With this command you can create the checksums
md5sum * > CHECKSUM.txt

and with this you can check if files are OK
md5sum -c CHECKSUM.txt

Maybe deja-dup can create/update a checksums file to check backups, but the problem is if the files are corrupted and the checksums file is in the same drive it could be corrupted too (it could be signed...OK, sorry for the brainstorming :)).

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