Help with btrfs balance

sorry if this is the wrong place to be placing this issue.

i have recently done a:

sudo btrfs balance start -dconvert=DUP -mconvert=DUP -sconvert=DUP --force  /

on my main drive and got this error after a reboot:

btrfs fi df /                                                                                                         ✔ 
Data, DUP: total=25.00GiB, used=24.09GiB
Data, single: total=2.00GiB, used=2.00GiB
System, DUP: total=32.00MiB, used=16.00KiB
Metadata, DUP: total=1.00GiB, used=533.72MiB
GlobalReserve, single: total=53.45MiB, used=0.00B
WARNING: Multiple block group profiles detected, see 'man btrfs(5)'.
WARNING:   Data: single, dup

can you please let me know where i’ve gone wrong?

This shows, that you use raid1 DUP, but that some of your data was not converted
This may be the right time to do a scrub to see if all data is OK !
And you should post also a

 sudo btrfs device usage /   

and later on maybe a (this one may take a lot of time)

sudo btrfs filesystem du -s /

you may have a look at:

https://wiki.manjaro.org/index.php/Btrfs

btrfs wiki @ kernel.org

Did you interrupt your balance ?

OR: May be your volume is to small to complete this ?

How big is it ? Are you able to expand your volume ?
https://wiki.manjaro.org/index.php/Btrfs#Extend_a_volume

What about posting some usefull information ?

Provide Information:

Using RAID1 is preferable over using DUP. Especially when you are able to use 2 partitions on different disks !

1 Like

i used this command to duplicate data on a single device:

sudo btrfs balance start -dconvert=DUP -mconvert=DUP -sconvert=DUP --force /

and i got this result:

btrfs fi df /  :heavy_check_mark:
Data, DUP: total=25.00GiB, used=24.09GiB
Data, single: total=2.00GiB, used=2.00GiB
System, DUP: total=32.00MiB, used=16.00KiB
Metadata, DUP: total=1.00GiB, used=533.72MiB
GlobalReserve, single: total=53.45MiB, used=0.00B
WARNING: Multiple block group profiles detected, see ‘man btrfs(5)’.
WARNING: Data: single, dup

can you please let me know how to remove the single profile on the data profile??