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Date: Tue, 02 Apr 2013 07:00:37 +0800
From: anand jain <anand.jain@oracle.com>
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To: Roman Mamedov <rm@romanrm.ru>
CC: linux-btrfs@vger.kernel.org
Subject: Re: BTRFS error in __btrfs_inc_extent_ref:1935: Object already exists
References: <20130401041540.4b8a4ab3@natsu> <20130401043605.2eb250a7@natsu> <20130401141207.533886a2@natsu>
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> I tried btrfsck --repair,

  I am not indicating this is the cause but, kindly note that
  btrfsck --repair has a bug which it will let kernel to reset
  the uuid of the root.

  the fix is at:

[PATCH] btrfs-progs: root_item generation_v2 is out of sync after btrfsck

Thanks, Anand