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Date: Sun, 3 Mar 2013 10:28:39 -0500
From: Chris Mason <chris.mason@fusionio.com>
To: Alex Lyakas <alex.btrfs@zadarastorage.com>
CC: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: same EXTENT_ITEM appears twice in the extent tree
Message-ID: <20130303152839.GC18135@shiny.masoncoding.com>
References: <CAOcd+r2p9AonnEwGZCS4CPUJ8O2EuQkSAA15twERY47FtrqLEw@mail.gmail.com>
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On Sun, Mar 03, 2013 at 06:40:50AM -0700, Alex Lyakas wrote:
> Greetings all,
> I have an extent tree that looks like follows:
> 
> 	item 22 key (27059916800 EXTENT_ITEM 16384) itemoff 2656 itemsize 24
> 		extent refs 1 gen 164 flags 1
> 	item 23 key (27059916800 EXTENT_ITEM 98304) itemoff 2603 itemsize 53
> 		extent refs 1 gen 165 flags 1
> 		extent data backref root 257 objectid 257 offset 17446191104 count 1
> 	item 24 key (27059916800 SHARED_DATA_REF 47169536) itemoff 2599 itemsize 4
> 		shared data backref count 1

Have you been experimenting on this FS with snapshot deletion patches?

-chris