Corruption + chkdsk results in {GUID}.mbf error messages

MediaBin 4.5.3
Windows 2003
SQL Server 2000 SP4
EMC disk array

Our EMC disk array went down and the volume was detected as corrupted. Our local admins advised us to run chkdsk /f on the 600 GB volume. When it completed, messages similar to the following were output (106 of them):


Deleting index entry {03CE9D6B-B3AB-4A7A-BF2F-EF7D27439F2B}.mbf in index $I30 of  file 1817665.

I have checked with a test java class and have discovered that this guid is not an asset, metadata or deriviate details reference. What does this reference and should we be concerned that there are issues with these 106 references? A quick glance by some of the business users at the system that is up now seemed to indicate recent work was still there as expected.

What are these files and how can I make sure we have the latest and greatest before telling them we need to revert to the latest backup?

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Comments

Migrateduser

Files with the extension .mbf are metadata whose size is too large to fit in the database row. In most cases, this is either the original file or the jpeg rendering of a thumbnail of a particular dimension (e.g. 256x256, 512x512). It would be be wise to restore these files from your backup.

Beth Smith
MediaBin Developer

lyman

To further clarify the names of these files do not correspond to the asset id's. These are different GUID's referenced internally by MediaBin. Support will be able to provide you with a reconciliation script comparing what is in your file store to what the database records think should be there!

Cheers,

Lyman Hurd