Data single *and* raid?

[Hendrik Friedel <hendrik@friedels.name>]

Hello,

I converted an array to raid5 by
btrfs device add /dev/sdd /mnt/new_storage
btrfs device add /dev/sdc /mnt/new_storage
btrfs balance start -dconvert=raid5 -mconvert=raid5 /mnt/new_storage/

The Balance went through. But now:
Label: none  uuid: a8af3832-48c7-4568-861f-e80380dd7e0b
         Total devices 3 FS bytes used 5.28TiB
         devid    1 size 2.73TiB used 2.57TiB path /dev/sde
         devid    2 size 2.73TiB used 2.73TiB path /dev/sdc
         devid    3 size 2.73TiB used 2.73TiB path /dev/sdd
btrfs-progs v4.1.1

Already the 2.57TiB is a bit surprising:
root@homeserver:/mnt# btrfs fi df /mnt/new_storage/
Data, single: total=2.55TiB, used=2.55TiB
Data, RAID5: total=2.73TiB, used=2.72TiB
System, RAID5: total=32.00MiB, used=736.00KiB
Metadata, RAID1: total=6.00GiB, used=5.33GiB
Metadata, RAID5: total=3.00GiB, used=2.99GiB

Why is there Data single and Raid?
Why is Metadata RAID1 and Raid5?

A scrub is currently running and showed no errors yet.

Greetings,
Hendrik

---
Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft.
https://www.avast.com/antivirus