From mboxrd@z Thu Jan  1 00:00:00 1970
From: Theodore Ts'o <tytso@mit.edu>
Subject: Re: Running fsck of huge ext4 partition takes weeks
Date: Fri, 28 Aug 2015 13:53:25 -0400
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Cc: Andreas Dilger <adilger@dilger.ca>, linux-ext4@vger.kernel.org
To: Alexander Afonyashin <a.afonyashin@madnet-team.ru>
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If dumpe2fs is hanging as well, it's likely that the problem may be at
the hardware level.  You might want to check dmesg or the kernel log
to see if there are any I/O errors being reported from hard drive.
What might be happening is that when a program (such as e2fsck or
dumpe2fs) tries to read from a specific part of the hard drive, the
hard drive is retrying a large number of times because the hard drive
head or platter surface has gotten damaged in some way.

It might also be a good idea to check the S.M.A.R.T. status using the
smartctl program.

Cheers,

						- Ted