Hallo, linux-btrfs, First I create an array of 2 disks with
mkfs.btrfs -d raid0 -m raid1 /dev/sdb1 /dev/sdd1 and mount it at /srv/MM. Then I fill it with about 1,6 TByte. And then I add /dev/sde1 via btrfs device add /dev/sde1 /srv/MM btrfs filesystem balance /srv/MM (it run about 20 hours) Then I work on it, copy some new files, delete some old files - all works well. Only df /srv/MM btrfs filesystem df /srv/MM show some completely wrong values: # 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. The sum of "used" and "Available" is far away from the really existent disk space. When I copy additional files to "/srv/MM" then "used" still shows the right value, and the sum grows (slowly) to the max. available space. In "btrfs filesystem df /srv/MM" the line Data, RAID0: total=1.67TB, used=1.48TB shows a "total" value which isn't related to any existent value; maybe it still shows the used space before adding the third partition. This (wrong) value seems not to change. Kernel 2.6.38.1 btrfs from november 2010 Viele Gruesse! Helmut -- 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