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Samuel's questions

Martin Hope
Samuel
Asked: 2012-05-05 07:32:21 +0800 CST
  • 27

I have a fresh ext4 partition, which means I just formated it with mkfs.ext4 -m 0.1 /dev/mapper/abak-home, and there's already 27G space used. Setting reserved root space (-m) to 0 didn't have any effect.

I'm using LVM but I don't think that LVM should have any effect on this. Ubuntu version is 12.04 LTS.

# df -h
Filesystem             Size  Used Avail Use% Mounted on
...
/dev/mapper/abak-home  1.8T   27G  1.8T   2% /home

Then I tried formating partition with ext3 and the result is much better:

# df -h
Filesystem             Size  Used Avail Use% Mounted on
...
/dev/mapper/abak-home  1.8T  196M  1.8T   1% /home

Anyway, why the difference and how can I fix this?

filesystem partitioning ext4