2011-04-09 10:11:41 +0100, Hugo Mills: [...] > > # df /srv/MM > > > > Filesystem 1K-blocks Used Available Use% Mounted on > > /dev/sdd1 5846053400 1593436456 2898463184 36% /srv/MM > > > > # btrfs filesystem df /srv/MM > > > > Data, RAID0: total=1.67TB, used=1.48TB > > System, RAID1: total=16.00MB, used=112.00KB > > System: total=4.00MB, used=0.00 > > Metadata, RAID1: total=3.75GB, used=2.26GB > > > > # btrfs-show > > > > Label: MMedia uuid: 120b036a-883f-46aa-bd9a-cb6a1897c8d2 > > Total devices 3 FS bytes used 1.48TB > > devid 3 size 1.81TB used 573.76GB path /dev/sdb1 > > devid 2 size 1.81TB used 573.77GB path /dev/sde1 > > devid 1 size 1.82TB used 570.01GB path /dev/sdd1 > > > > Btrfs Btrfs v0.19 > > > > ------------------------------------------------ > > > > "df" shows an "Available" value which isn't related to any real value. > > I _think_ that value is the amount of space not allocated to any > block group. If that's so, then Available (from df) plus the three > "total" values (from btrfs fi df) should equal the size value from df. [...]
Well, $ echo $((2898463184 + 1.67*2**30 + 4*2**10 + 16*2**10*2 + 3.75*2**20*2)) 4699513214.0799999 I do get the same kind of discrepancy: $ df -h /mnt Filesystem Size Used Avail Use% Mounted on /dev/sdb 8.2T 3.5T 3.2T 53% /mnt $ sudo btrfs fi show Label: none uuid: ... Total devices 3 FS bytes used 3.43TB devid 4 size 2.73TB used 1.17TB path /dev/sdc devid 3 size 2.73TB used 1.17TB path /dev/sdb devid 2 size 2.70TB used 1.14TB path /dev/sda4 $ sudo btrfs fi df /mnt Data, RAID0: total=3.41TB, used=3.41TB System, RAID1: total=16.00MB, used=232.00KB Metadata, RAID1: total=35.25GB, used=20.55GB $ echo $((3.2 + 3.41 + 2*16/2**20 + 2*35.25/2**10)) 6.6788476562500003 -- Stephane -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html