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Subject: Re: Question: How can I recover this partition? (unable to find logical $hugenum len 4096)
From: Chris Murphy <lists@colorremedies.com>
In-Reply-To: <EA37CDC0-8D44-45ED-8266-0E1CDECBE3EE@nickle.es>
Date: Mon, 26 Aug 2013 11:36:08 -0600
Cc: linux-btrfs <linux-btrfs@vger.kernel.org>
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To: Nicholas Lee <email@nickle.es>
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On Aug 26, 2013, at 11:26 AM, Nicholas Lee <email@nickle.es> wrote:

> Good news everyone! I got this to mount again using btrfs chunk-recover on the partition! It took around a day for it to run the initial chunk recovery scan (iotop showed that I was limited by disk throughput) and another three hours for the actual chunk recovery (iops limited).

Interesting. I also found this:
http://permalink.gmane.org/gmane.comp.file-systems.btrfs/26748

I wonder, what in dmesg indicates that the chunk tree is broken, and thus chunk-recover should be used? Or would a btrfsck without repair indicate it? 


Chris Murphy