Btrfs devel - Aug 2013 - Error relating to /dev/sr0 when calling btrfs fi show /dev/sdxy

Is the error relating to /dev/sr0 relevant to a call to /usr/bin/brtfs?  Why
does it show the superfluous output?

% sudo btrfs fi show /dev/sda3
failed to open /dev/sr0: No medium found
Label: ''arch64''  uuid: ab6f9133-a2ce-4c92-97ab-35cdc3c2d2a9
 Total devices 1 FS bytes used 2.46GB
 devid    1 size 119.00GB used 5.02GB path /dev/sda3

Btrfs v0.20-rc1-253-g7854c8b
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On Aug 10, 2013, at 3:59 AM, "Mike Audia" <mikey_a@gmx.com>
wrote:
> Is the error relating to /dev/sr0 relevant to a call to /usr/bin/brtfs? 
Why does it show the superfluous output?
> 
> % sudo btrfs fi show /dev/sda3
> failed to open /dev/sr0: No medium found
I get this on Virtual Box VMs, also with parted. I don''t get it with
parted or btrfs on baremetal.

Chris Murphy--
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This fixed it.

  http://permalink.gmane.org/gmane.comp.file-systems.btrfs/27129


>> % sudo btrfs fi show /dev/sda3
>> failed to open /dev/sr0: No medium found
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