$ sudo btrfs balance start -dconvert=single,soft /
It's definitely a 5.3.0 regression, it works without -f on 5.2.15.
Super slow. The media should be able to write at 20M/s.
Total DISK READ : 0.00 B/s | Total DISK WRITE : 0.00 B/s
Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 1418.15 K/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO>
COMMAND
1138 be/4 root 0.00 B/s 0.00 B/s 0.00 % 99.18 % btrfs
balance start -dconvert single soft /
402 be/4 root 0.00 B/s 0.00 B/s 0.00 % 3.09 %
[kworker/0:2-events]
But anyway, it completed without error.
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Chris Murphy
