Holes in the file system
 

Hi Friends,

I am doing a research in linux. Now only i have started learning linux and i have a doubt in linux file systems. What is the purpose of holes in filesystem. Why do we need that. They say that it takes bit less disk space and again they say that
"Holes are implemented by storing a special value as the address of the data block in the indirect block or inode. This special address means that no data block is allocated for that part of the file, ergo, there is a hole in the file."

What is the meaning of above lines. I got from some linux tutorial website.


Help me

Regards,
Muthiah.M

what is the name of this tutorial and
what website did it come from??

I dont remember the website, i got it from some where.

I have ever seen these depict in Understanding Linux Kernel 3rd edition, the chapter about ext2.

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