How to figure out why BTRFS drive reports it is out of space
<span style="color:#323232;"># sudo btrfs fi df /mnt/disk3
</span><span style="color:#323232;">Data, single: total=12.70TiB, used=12.27TiB
</span><span style="color:#323232;">System, DUP: total=8.00MiB, used=1.34MiB
</span><span style="color:#323232;">Metadata, DUP: total=15.00GiB, used=14.50GiB
</span><span style="color:#323232;">GlobalReserve, single: total=512.00MiB, used=608.00KiB
</span><span style="color:#323232;">
</span><span style="color:#323232;"># mkdir /mnt/disk3/tst
</span><span style="color:#323232;">mkdir: cannot create directory ‘tst’: No space left on device
</span>
I suspect this is BTRFS balancing issue, but even BTRFS’s own utility is indicating there’s still SOME space left. Certainly should be enough to create a directory.
Any ideas?
Just in general BTRFS default options for creating new volumes seem to not work well for disks that I intend to fill completely immediately after formatting. Are there better options for this use case? I just use
# mkfs.btrfs /dev/sdd1