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Date: Thu, 27 Dec 2012 09:29:37 -0500
From: Gene Czarcinski <gene@czarc.net>
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To: linux-btrfs Mailing list <linux-btrfs@vger.kernel.org>
Subject: Another novice question & comment
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OK, this is from inside a shell.  I have a btrfs volume or a btrfs 
subvolume on some arbitrary mount mount.  Is there some way to tell if 
it is a btrfs volume or a btrfs subvolume that is mounted?

Comment:  It sure would be nice if the btrfs man page corresponded 
better to the btrfs code.  Example, the man page says there is a "btrfs 
subvolume show" command.  The code disagrees and so does "btrfs --help"

Gene