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Date: Sat, 18 Apr 2015 09:45:50 +0200
From: Martin Monperrus <martin.monperrus@gnieh.org>
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To: linux-btrfs@vger.kernel.org
Subject: How to repair a BTRFS block?
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Dear Btrfs developers,

For some unknown reasons, my BTRFS filesystem is corrupted. dmesg prints

|BTRFS critical (device sda2): corrupt leaf, slot offset bad:
block=43231330304,root=1, slot=47|

(more than 1000x in the dmesg trace).

btrfs check --repair fails with:

read block failed check_tree_block
incorrect offset 12725 2298746482
items overlap, can't fix
cmds_check.c:2918: fix_item_offset: Assertion 'ret' failed

How to list the files in block #43231330304 affected by the corruption?
How to repair block #43231330304?

Best regards,

--Martin