Re: With Linux 5.5: Filesystem full while still 90 GiB free

[Martin Steigerwald <martin@lichtvoll.de>]

Remi Gauvin - 30.01.20, 22:20:47 CET:
> On 2020-01-30 4:10 p.m., Martin Steigerwald wrote:
> > I am done with re-balancing experiments.
> 
> It should be pretty easy to fix.. use the metadata_ratio=1 mount
> option, then write enough to force the allocation of more data
> space,,
> 
> In your earlier attempt, you wrote 500MB, but from your btrfs
> filesystem usage, you had over 1GB of allocated but unused space.
> 
> If you wrote and deleted, say, 20GB of zeroes, that should force the
> allocation of metatada space to get you past the global reserve size
> that is causing this bug,, (Assuming this bug is even impacting you. 
> I was unclear from your messages if you are seeing any ill effects
> besides the misreporting in df.)

I thought more about writing a lot of little files as I expect that to 
use more metadata, but… I can just work around it by using command line 
tools instead of Dolphin to move data around. This is mostly my music, 
photos and so on filesystem, I do not change data on it very often, so 
that will most likely work just fine for me until there is a proper fix.

So do need to do any more things that could potentially age the 
filesystem. :)

-- 
Martin