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Re: HFS + and creating a big file


On Jun 10, 2006, at 12:02 PM, email@hidden wrote:

I need to create a big file (20GB), the contents is not important,
will fill that in later, just the file size...
When I try to do this with lseek and then write one byte. as soon I
close the file, it takes a few minutes because it looks like the OS
is filling up the rest with 0x00 bytes during close or flush. File
system is HFS+

Any trick on how to prevent this from happening?

HFS+ does not support sparse files; what you are seeing is the expected and correct behaviour.

If you don't need the file when you are closing it, first truncate it to zero size, then close and delete.

 = Mike

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