linux-ext4 - Mapping bad sectors to damaged files and metadata with debugfs

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Message-ID: <tiftrgc60XsZ86vnazKgWPb052qaGzAhH-SiNGKI5f7li-WQ29WzGYDSNwgTpgxgxRQY11lm5TBuCr_YaaDeFg==@protonmail.ch>
Date:   Sat, 21 Apr 2018 15:50:21 -0400
From:   Fedja Beader <fedja@...tonmail.ch>
To:     "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Mapping bad sectors to damaged files and metadata with debugfs

Is there a shortcut to "testb X", "icheck X" -> X Y, "ncheck Y" where X is the block inside a damaged filesystem? Is there a way for ncheck to also tell me the offset into the file if the damage is inside a file?

In case the former is not possible, is it possible to somehow turn down debugfs's verbosity so it can be automated more easily?

-Fedja