Has anyone run the Data Integrity Scan on an ReFS volume?

  1.    12 Aug 2018 #1

    Has anyone run the Data Integrity Scan on an ReFS volume?


    I have tried multiple times to run the Data Integrity Scan from within the Task Scheduler only to receive entries like those below in the Event Log. Integrity is enabled. I have tried with "Enforced" both true and false. Tried with ReFS on simple volume and also with mirrored storage space. Never works. What am I doing wrong?

    Error:
    Files were skipped during the volume scan.
    Files skipped: 310
    Volume name: I:\ (\??\Volume{53d99c4e-9ad6-11e8-8448-0cc47ad896dd}\)
    First skipped file name: I:
    HResult: The specified copy of the requested data could not be read.

    Information:
    Volume scan completed on I:\ (\??\Volume{53d99c4e-9ad6-11e8-8448-0cc47ad896dd}\)
    Bytes repaired: 0x0
    Bytes not repaired: 0x3000
    HResult: The operation completed successfully.


    I'd like to add that the above happens within a minute or two. There were hundreds of files and I know of quite a few that are definitely corrupted.
    Last edited by mjohnsonn2; 12 Aug 2018 at 19:53.
      My ComputerSystem Spec


  2. Posts : 11
    Windows 10 Enterprise
       25 Aug 2018 #2

    I just ran it and I got two similar errors, although I am not sure what they mean:

    Code:
    Level    Date and Time    Source    Event ID    Task Category
    Error    25/08/2018 18:22:28    Microsoft-Windows-DataIntegrityScan    24    None    "Files were skipped during the volume scan.
    Files skipped: 101
    Volume name: S:\ (\??\Volume{9edd53fb-a847-11e8-9a69-107b4493e73f}\)
    First skipped file name: S:
    HResult: The specified copy of the requested data could not be read."
    
    Error    25/08/2018 18:22:26    Microsoft-Windows-DataIntegrityScan    57    None    "Volume metadata scrub operation failed.
    Volume name: S:
    Metadata reference: 0x204
    Range offset: 0x0
    Range length (in bytes): 0x0
    Bytes repaired: 0x0
    Bytes not repaired: 0x3000
    Status: The specified copy of the requested data could not be read."
    In my case, no files should be corrupted (files copied tight now over smb on fresh pool).
      My ComputerSystem Spec

  3.    27 Aug 2018 #3

    ReFS does very few of the most important things it should. The data integrity scan does not work. I have files that absolutely are corrupted and that should certainly be repairable by ReFS. The scan fails to do anything.

    Has anybody here seen it work reliably? Any controlled testing?
      My ComputerSystem Spec


  4. Posts : 11
    Windows 10 Enterprise
       28 Aug 2018 #4

    I can't find an easy way to introduce bit-rot. All system I tried were performing only changes acceptable to ReFS as legitimate. Would you advice a way for me to test repeatably? PowerShell would be a good way, perl or python too?
      My ComputerSystem Spec

  5.   My ComputerSystem Spec

  6.    29 Aug 2018 #6

    Yea I saw that over there. That was me asking the question. The answer is somewhat okay, but also somewhat lame. There are times your data will get erased and that should be documented better. According to my bit-rot tests, ReFS does a terrible job at detecting and fixing corruption so I'm suspect of anything the team says on the topic. So far I seem to be the only one that has actually tested with corrupt files. Perhaps I've done something wrong, but until I'm shown differently I stand by the findings on this thread:

    https://social.technet.microsoft.com...winserverfiles


    Perhaps that latest KB will fix the issues I found, but I doubt it. We need more people to test with corruption.
      My ComputerSystem Spec

  7.    29 Aug 2018 #7

    I can't find an easy way to introduce bit-rot. All system I tried were performing only changes acceptable to ReFS as legitimate. Would you advice a way for me to test repeatably? PowerShell would be a good way, perl or python too?
    Post #19 on the thread at the link below shows how to create corruption using Hard Disk Sentinel Pro:

    Why use ReFS?
    Last edited by mjohnsonn2; 29 Aug 2018 at 20:52.
      My ComputerSystem Spec


 

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