On Sun, Mar 15, 2020 at 1:46 PM Russell Mosemann <rmosemann@xxxxxxxxxxxxxx> wrote: > > df displays 100% disk usage when 119GB is used out of 9TB on a freeshly-installed system. The issue surfaces when disk usage is somewhere over the low 100GBs. Existing systems with lots of data that were upgraded to kernel 5.4 do not exhibit this problem. Other freshly-installed systems with less than 100GB do not show this problem. It is unknown if they will exhibit the problem, as disk usage increases. btrfs reports the correct disk space, and the system is writable. I wiped the drive, recreated the file system and the problem reappeared after a couple of days, when disk usage exceeded 100GB. Files are being copied with --reflink every day. Snapshots are not being made, and there are no subvolumes. > > # uname -a > Linux vhost361 5.4.0-0.bpo.3-amd64 #1 SMP Debian 5.4.13-1~bpo10+1 (2020-02-07) x86_64 GNU/Linux Fixed since 5.5.2, and 5.4.18. -- Chris Murphy
