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From: Robert Nichols <rnicholsNOSPAM@comcast.net>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Fwd: Cannot wipe header on device
Date: Mon, 14 Dec 2015 13:53:59 -0600	[thread overview]
Message-ID: <n4n6on$nji$1@ger.gmane.org> (raw)
In-Reply-To: <CAEtdG7t713F63L=du_QDdsZ=iLevoM0cEiJ47p-S=GK+u-pKyw@mail.gmail.com>

On 12/14/2015 02:44 AM, Luís de Sousa wrote:
> I understand this is not an issue with cryptsetup, but would anyone
> have suggestions on how to proceed? Is there any hope of "fixing"
> this, e.g. marking this sector as unusable?
>
> Thank you,
>
> Luís
>
> $ sudo dd if=/dev/zero of=/dev/sdb1 bs=4096 count=1 oflag=sync,direct
> dd: error writing ‘/dev/sdb1’: Remote I/O error
> 1+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.00142455 s, 0.0 kB/s

There should also have been some system error messages logged which
might be informative.

When any reasonably modern (last 20 years, or so) drive shows an
I/O error on a write operation, it generally means that the drive
has run out of spare sectors or has some problem other than media
errors.  Such a drive is long past the time it should have been
replaced.

It would be interesting to see the output from
"smartctl -A /dev/sdb", if the interface supports it. (Not all
USB <=> SATA bridge chips support the necessary commands.)

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.

  parent reply	other threads:[~2015-12-14 19:54 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-10 10:18 [dm-crypt] Cannot wipe header on device Luís de Sousa
2015-12-10 13:35 ` Michael Kjörling
2015-12-10 16:49 ` H McCurdy
2015-12-10 17:24   ` Luís de Sousa
2015-12-10 17:37     ` H McCurdy
2015-12-10 18:25       ` Luís de Sousa
2015-12-10 19:54         ` H McCurdy
2015-12-11  4:33           ` Arno Wagner
     [not found]           ` <CAEtdG7sSJQC79cAqCGcMwREH_nTb8NakiXSfCr3+vv3vyo0w+A@mail.gmail.com>
2015-12-11 14:09             ` [dm-crypt] Fwd: " Luís de Sousa
2015-12-11 14:34               ` Milan Broz
2015-12-11 14:56                 ` Luís de Sousa
2015-12-11 15:10                   ` Milan Broz
2015-12-13 19:52                   ` Milan Broz
2015-12-14  8:44                     ` Luís de Sousa
2015-12-14 14:46                       ` Sven Eschenberg
2015-12-14 19:53                       ` Robert Nichols [this message]
2015-12-14 20:39                         ` Arno Wagner
2015-12-15  8:53                       ` Luís de Sousa
2015-12-15  9:37                         ` Milan Broz
2015-12-15 17:53                         ` Robert Nichols
2015-12-16  4:06                         ` David Christensen
2015-12-10 19:06 ` [dm-crypt] " David Christensen

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