While on Ubuntu 10.10 I cannot get defragment working.
ing...@selene:~$ btrfs filesystem defragment /media/Data/
ioctl failed on /media/Data/ ret -1 errno 1
total 1 failures
ing...@selene:~$ uname -a
Linux selene 2.6.35-23-generic #36-Ubuntu SMP Tue Oct 26 17:03:18 UTC
2010 i686 GNU/Linux
ing...@selene:~$ sudo btrfs filesystem show
[sudo] password for inglor:
failed to read /dev/sr0
Label: 'Data' uuid: 3946b7c3-44c8-430e-b737-0c0c965e16c4
Total devices 1 FS bytes used 12.32GB
devid 1 size 29.08GB used 28.75GB path /dev/sda7
Btrfs v0.19-35-g1b444cd
Is it implemented on kernel 2.6.36 and above only?
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