Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest
Please, try again later.
The error "The requested operation could not be completed due to a file system limitation" can occur for various reasons.
This article highlights one possible cause that may occur when a Windows Repository is backed by an NTFS volume that uses Windows Data Deduplication and has the default file record size of 1024 bytes.
File operations with large restore points located on an NTFS volume that uses Windows Data Deduplication fail with errors similar to the following:
The requested operation could not be completed due to a file system limitation. Failed to flush file buffers. File: Filename.vbk
This error is relayed by Veeam Backup & Replication from the error reported to it by the underlying OS's filesystem. When this occurs, Veeam cannot write any data to the affected file because of an NTFS limitation.
Manual rehydration of the file, using the command Expand-DedupFile
, will likely also fail with the same error.
V:
with the appropriate drive letter.fsutil fsinfo ntfsinfo V:
Bytes Per FileRecord Segment :
A "Bytes Per FileRecord Segment" value of 1024 would indicate that the NTFS volume was initially formatted with the default file record size (FRS).
Based on advice from Microsoft and reported experiences of other customers, issues related to file system limitations when using Windows Data Deduplication are reduced or eliminated when the NTFS volume is formatted with 'large FRS', which sets the FileRecord Segment value to 4096. However, it is possible the same error message may occur later if the 4096 Bytes Per FileRecord Segment limit is hit.
Critical Note: It is impossible to change the FRS value without reformatting the volume, which results in losing all data on that volume.
For more information, review Microsoft Documentation: Formatting requirements for large files.
As this issue is related to filesystem limitation, there is no simple fix; instead, there are ways to work around the limitation by changing how restore points are created or by changing the underlying filesystem.
Your feedback has been received and will be reviewed.
Please, try again later.
Please try select less.
This form is only for KB Feedback/Suggestions, if you need help with the software open a support case
Your feedback has been received and will be reviewed.
Please, try again later.