В Sun, 22 Jun 2014 13:23:31 -0400
Anton Aylward
The number don't add up:
# df -h --type=btrfs Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgmain-vROOT 10G 7.0G 1.6G 82% / /dev/mapper/vgmain-vHOME 5.0G 2.7G 666M 81% /home
Try that without the human readable
# df --type=btrfs Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/vgmain-vROOT 10485760 7325208 1611576 82% / /dev/mapper/vgmain-vHOME 5242880 2820236 680968 81% /home
That's with snapper removed.
Did you also removed all snapshots?
Now 'du' walks the tree adding up the size of the files
# du -hsx /home / 2.4G /home 5.9G /
So yes there is some overhead ... A lot of overhead it seems if I just look at the space used. 5.9 ==> 7.0 And 2.4 --> 2.7
But the number don't add up for 'df' by a long way. I doubt the btree overhead is all that.
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