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ext4: How to account for the filesystem space?

The full 2 GB space doesn't get shown as free space even after fully formatting it with mkfs.ext4. Are these some system files which have occupied the space of 129 MB?

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Aquarius_Girl
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  • @Giles So this means that 129 MB are used for the file system storage? – Aquarius_Girl Jun 29 '11 at 07:30
  • Yes, 128 MB is for the journal, then usually there is a bit more for the resize inode. – psusi Jun 29 '11 at 13:03
  • @psusi The inodes take up more room than the journal. @Anisha You can see an example calculation in the post I've linked. Try running `tune2fs -l /dev/sdb1` (or whatever the device is), and checking if the calculation works out. Also make sure you're interpreting the output of `df` correctly, if that's what you're looking at (see also [What happened to my free space](http://unix.stackexchange.com/questions/2827/what-happened-to-my-free-space)). – Gilles 'SO- stop being evil' Jun 29 '11 at 13:55
  • @Gilles yes, but the inode tables are not counted as "used space". – psusi Jun 29 '11 at 17:43

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