CRC Error

Backup agent for Microsoft Windows servers and workstations (formerly Veeam Endpoint Backup FREE)

Re: CRC Error

Veeam Logoby Dima P. » Mon Feb 20, 2017 9:14 pm

This error refers to the source (computer), right, and not the target backup device?

Correct.
I ran Windows checkdisk which reported no errors

Did you try CHKDSK VOLUME: /F /R ?
Is the error text accurate [truly bad/corrupt]

Unfortunately its true. Try the regkey suggested in this thread to backup the affected volume.
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Re: CRC Error

Veeam Logoby techgirl » Fri Mar 24, 2017 3:20 pm

UPDATE: Thank you Dima, yes, neither chkdisk F nor R report any issue - no errors. DISM found no issue. sfc /scnannow - nothing. Acer's diagnostics found no error. I have since tried Seagate Seatools on it, which did find an error but could not repair it. Then I have noticed in Windows Event Viewer ->Windows Logs->System: "The device, \Device\Harddisk0\DR0, has a bad block." This error was there starting exactly when Veeam started failing. EVERY windows tool or diagnostic shows the drives "healthy" and no errors except 'event viewer'! I am thankful that Veeam brought error this to my attention! :)

Asus wants to do a full wipe and restore, so I have done file level backup of my content as a safeguard, I am now off to tweak that registry key to force an "entire computer" backup to complete.
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Re: CRC Error

Veeam Logoby Dima P. » Fri Mar 24, 2017 4:16 pm

techgirl,

Most of third party check disk utilities simply reply on built-in windows checkdisk, that why they may show the same result. There is a tool called Victoria, our support team uses it from time to time and it’s very precise it terms of bad block detection.
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[MERGED] Veeam Endpoint CRC global\shadowcopy Error

Veeam Logoby jezi55 » Thu Apr 06, 2017 7:07 pm

Hello,

Currently run Veeam Backup & Replication and Veeam Endpoint Protection to the same NAS box backup storage. The other day one of the hard drives failed in my finance server (raid 5) so replaced the drive everything was 'green' and the raid rebuilded fine. When i try to run Veeam endpoint on my server it copies about 40gb and then comes up with the following message

Code: Select all
"06/04/2017 19:59:41 :: Error: Data error (cyclic redundancy check). Failed to read data from the file [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy7]. The block at offset 122037469184 (length 1048576) is corrupt. Failed to upload disk. Agent failed to process method {DataTransfer.SyncDisk}. Exception from server: Data error (cyclic redundancy check). Failed to read data from the file [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy7]. The block at offset 122037469184 (length 1048576) is corrupt. "


I have tried doing a sfc and a checkdisk but no bad blocks are present, any ideas how i can fix this?

It is running on Server 2008 R2/Endpoint 1.5.0.306

Many thanks,

Dex
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Re: CRC Error

Veeam Logoby Dima P. » Thu Apr 06, 2017 10:22 pm

Hi Dex,

Unfortunately, this error refers to hard disk corruption. Kindly, review this thread and specifically this post.
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[MERGED] 2.0 RTM bad block detectred

Veeam Logoby lrosa » Mon May 01, 2017 8:47 am

I just upgraded to 2.0 RTM on Windows 10 Pro Creators Update Release 1703. I choose not to install the license and proceed with free version.

I created a new full backup on a SMB share.

At the end of the job the log says

[Alert yellow icon] One or more bad blocks were detected and skipped
[Check green icon] Finalizing
[Alert yellow icon] Processing finished with warning at.....

My laptop has a 1Tb Samsung 840 EVO SSD and the Samsung diagnostic does not report any issue.

Is there a way to have more information about that warning message? I checked the logs in %ProgramData%\Veeam\Endpoint\Backup_Job_COMPUTERNME but I am not been able to find any reference to bad sectors.

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Re: CRC Error

Veeam Logoby Vitaliy S. » Mon May 01, 2017 10:52 am

Please review this topic for some tips on how to detect these blocks, start with Windows Event log (for example).
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Re: CRC Error

Veeam Logoby damon.theis » Mon May 01, 2017 12:49 pm

I began receiving this error on a new windows 10 Lenovo pc last week that had previously backed up fine every night.

Code: Select all
Error: Data error (cyclic redundancy check). Failed to read data from the file [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy4]. The block at offset 112056074240 (length 1048576) is corrupt. Failed to upload disk. Agent failed to process method {DataTransfer.SyncDisk}. Exception from server: Data error (cyclic redundancy check). Failed to read data from the file [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy4]. The block at offset 112056074240 (length 1048576) is corrupt. Unable to ret

Windows reports disk is error free and not fragmented.
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Re: CRC Error

Veeam Logoby Gostev » Mon May 01, 2017 3:24 pm

Definitely not error free, as far as I can see ;)
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Re: CRC Error

Veeam Logoby Dima P. » Mon May 01, 2017 4:24 pm

Damon,

To back this volume up use a regkey described in this post. By the way, in VAW 2.0 RTM code option to skip bad blocks is enabled by default, so worth checking.
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Re: CRC Error

Veeam Logoby lrosa » Mon May 01, 2017 5:53 pm

Vitaliy S. wrote:Please review this topic for some tips on how to detect these blocks, start with Windows Event log (for example).

i did a checkdisk then an incremental backup: same bad block skipped warning.

Event viewer reports the warning and nothing else

I grepped the word error in the Veeam logs and the only line I found is this in JobBackup_Job_COMPUTERNAME Backup.log:

<01> Error IS REPO RESCAN = FALSE
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Re: CRC Error

Veeam Logoby Vitaliy S. » Tue May 02, 2017 8:13 pm

Do you have any other native tools to check the data blocks? Maybe the post above made by techgirl might help too.
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Re: CRC Error

Veeam Logoby lrosa » Wed May 03, 2017 4:32 am

The probles is exactly this: there are no disk related events in the System log.

Samsung Magician is enabled and says that the disk is good. S.M.A.R.T. metrics collected by Magician are all OK

lr
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Re: CRC Error

Veeam Logoby Vitaliy S. » Wed May 03, 2017 11:58 am

Well... then you can try to ignore this message or contact our technical team to investigate this further.
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Re: CRC Error

Veeam Logoby majones » Fri May 05, 2017 10:07 am

I got the bad blocks error with VEB so used "SkipBadBlocks (DWORD) = 1" edit in the registry and the backup then ran OK but with a warning. I then restored the backup to a new disk (without bad blocks) and did a backup of that disk, but still got a warning that there were bad blocks. Is this normal? - ie the restored backup retains the bad block characteristics of the original?
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