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To: linux-btrfs@vger.kernel.org
From: Neal Becker <ndbecker2@gmail.com>
Subject: btrfs device scan returns nothing?
Date: Wed, 06 May 2015 13:44:29 -0400
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What am I doing wrong?

sudo btrfs device scan

Scanning for Btrfs filesystems
[silence]

But I'm running on btrfs now:

--- /etc/fstab
UUID=7246327b-1905-4fe2-9b6b-b9376017264f /                       btrfs   
subvol=root     1 1
UUID=2c04be93-34c1-4016-ba41-60fd9fd90616 /boot                   ext4    
defaults        1 2
UUID=7246327b-1905-4fe2-9b6b-b9376017264f /home                   btrfs   
subvol=home     1 2
...
-- 
Those who fail to understand recursion are doomed to repeat it