Subvolume ID 5 Showing Deleted

["Carlos Medrano" <crlsmedrano99@gmail.com>]

Greetings Mailing List,

Is it normal for btrfs subvolume list -d to show id 5 as deleted? E.g.

[crlsmdrn@server001 ~]$ sudo btrfs subvol list -d /
ID 5 gen 707098 top level 0 path DELETED 
[crlsmdrn@server001 ~]$

Some background information:

This is a home server running 2 10 tb disks in a btrfs RAID 1 configuration
that is used for backups/file storage. A few weeks ago, I deleted a lot of
snapshots. While they were deleting, I disabled quotas because they were
taking a while to delete (btrfs-cleaner was running in the background with
96% CPU usage). Even after disabling quotas, btrfs-cleaner was still running
in the background.

Yesterday, a storm nocked out a powerline in my neighborhood, causing the
computer to reboot. When booting back up, I started a scrub operation, and
it completed with no errors. When checking the deleted subvolumes list, the
only 1 there was id 5.

If ID 5 is the root, why would it show deleted?
Uname -a shows Linux server001.carlos1001.com 4.19.9-1.el7.elrepo.x86_64 #1
SMP Thu Dec 13 10:52:03 EST 2018 x86_64 x86_64 x86_64 GNU/Linux

Let me know if I should provide more information.

Thanks,

Carlos