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ext3 real disk occupation of a file




Hi,

I'm trying to understand why extra blocks are added when you create a file in the ext3 fs:

for example, let's create a file of 1111 blocks (4096 bytes for each block)

$ dd if=/dev/zero of=foo bs=4096 count=1111

the real occupation disk is then:

$ du -B 4096 foo
1114

instead of 1111

So where the 3 extra blocks come from?

Thanks for help!

youness

--
Y.

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