Warning Message CRC

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mconca
Posts: 9
Joined: Wed Sep 30, 2015 12:30 pm

Warning Message CRC

Post by mconca »

Hi.
I keep getting this warning message for several files that are in use during backup:
Warning: CRC test failed for file "xxxxxxxx". CRC stored in catalog is 0, destination CRC is 71B6CA27

The file gets backed up correctly, I don't know why these warnings appear.
I've got these flags active:
- Test after backup
- Remove from catalog all files with errors

Should I change something?

Adrian (Softland)
Posts: 1550
Joined: Wed Dec 16, 2009 12:46 pm
Location: Cluj-Napoca, Romania
Contact:

Re: Warning Message CRC

Post by Adrian (Softland) »

Hi,

Please try to run a repair after the backup execution. Will that finish without warnings?

mconca
Posts: 9
Joined: Wed Sep 30, 2015 12:30 pm

Re: Warning Message CRC

Post by mconca »

After a backup, I did a full repair (not just catalogs) and it showed some errors.
Backup ended with 3 warnings.
Repair ended with 16 errors (probably the sum of every warning that has happened).

Log says:
Error: CRC test failed for file "xxxxx". CRC stored in catalog is 0, destination CRC is 928362A4

It may be that it does not use VSS to test files, so it cannot calculate right CRC for open files and writes 0 on the catalog, or something like that.
I say this because every file with warnings is a database file or an open excel file

Adrian (Softland)
Posts: 1550
Joined: Wed Dec 16, 2009 12:46 pm
Location: Cluj-Napoca, Romania
Contact:

Re: Warning Message CRC

Post by Adrian (Softland) »

Hi,

Is the VSS service working properly on that computer?
Do you get any VSS warnings in log?
Do you have the same problem if the files are not in use during the backup?

mconca
Posts: 9
Joined: Wed Sep 30, 2015 12:30 pm

Re: Warning Message CRC

Post by mconca »

VSS is working (every file gets backed up correctly)
I see no VSS warnings in logfile
Today I've backed up 45 files and I had 4 warnings. So files that are not in use don't have this problem.

Adrian (Softland)
Posts: 1550
Joined: Wed Dec 16, 2009 12:46 pm
Location: Cluj-Napoca, Romania
Contact:

Re: Warning Message CRC

Post by Adrian (Softland) »

Hi,

Can you manually copy those 4 files from source to another location using Windows Explorer while they are in use?

mconca
Posts: 9
Joined: Wed Sep 30, 2015 12:30 pm

Re: Warning Message CRC

Post by mconca »

Right after the backup I can copy those files without problems

Adrian (Softland)
Posts: 1550
Joined: Wed Dec 16, 2009 12:46 pm
Location: Cluj-Napoca, Romania
Contact:

Re: Warning Message CRC

Post by Adrian (Softland) »

Hi,

Please send us the last backup log and the backup catalog (.bkc file) from the backup destination to support[at]backup4all[dot]com

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