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SUA statvfs() call on Windows Server 2008 R2 may return error

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Symptoms

The statvfs() call in SUA may fail with the following error on a Windows 7 or Windows Server 2008 R2 based system:


statvfs(): errno = 88 (Value too large to be stored in data type)

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Cause

This problem occurs due to the allocation of Master File Table zones on the NTFS file system less than 100GB.

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Resolution

This problem may be fixed by increasing the size of the first Master File Table zone. This can be done using on the following methods:

Using the FSUTIL command in Windows - fsutil behavior set MftZone 4
Change the value of HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\FileSystem\NtfsMftZoneReservation to 4 using Registry Editor

In some cases, defragmenting or reformatting the file system may also resolve this problem.

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More Information

In a NTFS volume with a large number of files, creation of a second MFT zone is triggered when the first MFT zone is filled up. When statvfs() executes, it compares the zone end and start  for all MFS zones. If zone 2 start and end are both smaller than zone 1  start and end respectively, it generates a negative difference and results in statvfs() failure with error code 88.

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Keywords: kb

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Article Info
Article ID : 2698980
Revision : 1
Created on : 1/7/2017
Published on : 4/6/2012
Exists online : False
Views : 248