checking of backup consistency

[stefa...@googlemail.com]

Hello,

is it possible to check (older) volumes to see that they are not corrupted/encrypted (eg from a hack) and I can restore from it? Our volumes are stored on HDD.

thanks in advance,

best regards

Stefan

[Chad W Seys]

I'm curious about this too. I had trouble restoring a recent backup (see errors below), but the only solution I could think of was to actually restore (to nullfs https://github.com/abbbi/nullfsvfs).

BTW, with respect to the error restoring that we encountered, a Google shows a thread in which bad RAM is suspected, but none was found on the client or server. Further, making a fresh backup seems to work (much as in the thread where the problem comes and goes).
https://forums.freebsd.org/threads/very-creepy-pki-key-damaged-twice.72569/

01-Dec 21:55 smb-fd JobId 1013649: Error: filed/crypto.cc:294 Decryption error
. buf_len=10476 decrypt_len=0 on file /srv/smb/group/home/calorim/Runs
/m4r/BSN/m4r018.bsn.hdf5
01-Dec 21:55 smb-fd JobId 1013649: Error: Uncompression error on file /srv/smb
/group/home/calorim/Runs/m4r/BSN/m4r018.bsn.hdf5. ERR=Zlib data error
01-Dec 21:55 smb-fd JobId 1013649: Error: findlib/attribs.cc:402 File size of
restored file /srv/smb/group/home/calorim/Runs/m4r/BSN/m4r018.bsn.hdf5
not correct. Original 1117144772, restored 688586752.
01-Dec 21:55 smb-fd JobId 1013649: Error: OpenSSL digest Verify final failed:
ERR=error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt
01-Dec 21:55 smb-fd JobId 1013649: Error: OpenSSL digest Verify final failed:
ERR=error:04091068:rsa routines:int_rsa_verify:bad signature
01-Dec 21:55 smb-fd JobId 1013649: Error: filed/crypto.cc:199 Signature valida
tion

Chad.