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Ntfs Misreporting Free Space (Part 2)

Continuing our discussion on the internals of disk usage, we will now shift our focus to internal metadata usage. …….. KB in …. Indexes . Consider for a moment a world without indexes… The $MFT is a database containing records that are accessed via FRS Read More...
Posted Friday, October 31, 2008 1:56 AM by ntdebug | 3 Comments
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NTFS Misreports Free Space?

I have recently seen a number of issues where customers called in to report a significant difference between the “Size on disk” for the root of a volume, and the reported amount of “Used space” in the volume properties. While considering this, I noticed Read More...
Posted Thursday, July 03, 2008 9:08 PM by ntdebug | 8 Comments
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NTDebugging Puzzler 0x00000007: Interlocked functions

Today, we will have some fun with interlocked functions. The following section of code is reentrant. A “well meaning” developer used interlocked functions to avoid serializing on a global table lock. Initial smoke testing shows that the code works fine. Read More...
Posted Monday, June 02, 2008 9:47 PM by ntdebug | 19 Comments
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Understanding NTFS Compression

As our group’s file systems expert, I see most of the common problems associated with the use/misuse of NTFS compression. Before you check the “Compress contents to save disk space” checkbox, it might be good to understand how this affects the happy little Read More...
Posted Tuesday, May 20, 2008 8:04 PM by ntdebug | 3 Comments
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