Re: bad sectors on disk

From	Eike Lantzsch <zp6cge@gmx.net>
Newsgroups	linux.debian.user
Subject	Re: bad sectors on disk
Date	2016-02-09 13:30 +0100
Message-ID	<r0fAF-3Wc-69@gated-at.bofh.it> (permalink)
References	<r0ebv-2Tw-5@gated-at.bofh.it> <r0f7A-3uX-15@gated-at.bofh.it>
Organization	Deep Space Obscuratory

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Hi Ritesh Raj Sarraf

Just a thought - my two cents:

On Tuesday 09 February 2016 12:53:04 Thomas Schmitt wrote:
> Hi,
> 
> > Thank you for your response.
> 
> Purely selfish. :)
> I want to know about cabling problems.
> 
> > Linux pi 4.1.16-v7+ #833 SMP Wed Jan 27 14:32:22 GMT 2016 armv7l GNU/Linux
> 
> The source code where i find the message text in my Sid kernel
> is not depending on the CPU architecture. So it is supposed to be
> in effect on your system.
> But i riddle why it does not convert 0x2003 to "FAILED".
> 
> > The RPi2 is a USB 2.0 only device. But yes, I think the drive is 3.0
> > capable.

Are you copying or moving files from or to your USB-HDD via the network?
RPis share the same USB controller for the network chip and for the USB-ports.
My experience with RPis is that heavy network traffic makes the I/O over the 
USB-ports to and from HDDs very shaky. I even lost a HDD that way.
If you want some sort of a NAS then ditch the RPi. You will be better off with 
a Cubietruck if you want to stick to ARM-architecture or a PC-Engines ALIX 
(i386) or a PC-Engines APU if you prefer amd64 and want more memory.

All the best
Eike

> 
> The reports about optical drive problems which i have seen during
> the last year were about USB 2 boxes plugged into USB 3 computer
> sockets. They are far too few to indicate a general problem.
> I suspect it is about certain kernels and certain pairings of the
> two participating USB controllers, maybe even the cables.
> 
> On the other hand, there are criminal USB power supply contraptions
> around which in most cases even seem to work. See
>  
> https://media-cdn.ubuntu-de.org/forum/attachments/00/03/8036213-IMG_0222.JP
> G
> https://media-cdn.ubuntu-de.org/forum/attachments/41/03/8037143-51zTbNM27vL
> ._SL1000_.jpg from a german discussion about spurious "host_status 7"
> errors.
> I meanwhile suspect something like a dead fruit fly was sticking
> to the plug. A modern version of the 1947 classic
>   https://en.wikipedia.org/wiki/File:H96566k.jpg
> 
> > I just hope it is not another HDD failure.
> 
> Looks like a controller and/or driver problem.
> The web echo on "UNKNOWN(0x2003)" is suspiciously unhelpful.
I second that - see above.
> 
> Lets try google
>   sd "FAILED Result" DID_OK DRIVER_OK
> Aha. There are kernels which can translate 0x2003 and the commenters
> are somewhat more qualified. But still no hands-on proposals.
> 
> > I am hoping the fsck results are reliable. I only tried the "-c" read-
> > only option. The other was with "-cc" which would also perform a
> > read/write test.
> 
> I cannot find "-c" in man fsck of Sid.
> 
> If it really does read the metadata and the content of data files,
> then at least your filesystem should be ok for making a backup.
> (I would not use it for heavy writing before such a backup was made.)
> 
> If you want to know whether there is a reproducible bad spot, then
> try whether your disk produces any i/o errors when read flatly.
> Like
> 
>   dd if=/dev/sda of=/dev/null
> 
> If you get errors, try whether they occur again if you start reading
> a few hundred blocks before that address
> 
>   dd if=/dev/sda of=/dev/null skip=...block.number...
> 
> 
> But i do not really expect a reproducible pattern here.
> 
> 
> Have a nice day :)
> 
> Thomas

-- 
Eike Lantzsch ZP6CGE
Agencia Shopping del Sol
Casilla de Correo 13005
1749 Asuncion / Paraguay
Land-line: +595-21-553984
Cell-phone: +595-971-696909
Skype: eikelan

Thread

bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-09 10:00 +0100
  Re: bad sectors on disk Hans <hans.ullrich@loop.de> - 2016-02-09 10:20 +0100
  Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 11:20 +0100
    Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-09 12:00 +0100
      Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 13:00 +0100
        Re: bad sectors on disk Eike Lantzsch <zp6cge@gmx.net> - 2016-02-09 13:30 +0100
          Re: bad sectors on disk Eike Lantzsch <zp6cge@gmx.net> - 2016-02-09 13:50 +0100
        Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-10 15:20 +0100
          Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-10 15:40 +0100
      Re: bad sectors on disk jdd <jdd@dodin.org> - 2016-02-09 13:10 +0100
  Re: bad sectors on disk Jonathan Dowland <jmtd@debian.org> - 2016-02-09 16:20 +0100
  Re: bad sectors on disk David Christensen <dpchrist@holgerdanske.com> - 2016-02-09 20:30 +0100
    Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-09 21:00 +0100
  Re: [computers] bad sectors on disk TWS Admin <tws@wilderness.org.au> - 2016-02-11 05:00 +0100
    Re: [computers] bad sectors on disk Joseph Loo <jloo20111002@gmail.com> - 2016-02-11 05:10 +0100
      Re: [computers] bad sectors on disk David Wright <deblis@lionunicorn.co.uk> - 2016-02-12 05:20 +0100
        Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-12 08:50 +0100
          Re: bad sectors on disk Gene Heskett <gheskett@shentel.net> - 2016-02-12 09:30 +0100
            SATA cables David Christensen <dpchrist@holgerdanske.com> - 2016-02-12 18:30 +0100
              Re: SATA cables Ric Moore <wayward4now@gmail.com> - 2016-02-14 01:20 +0100
                Re: SATA cables Gene Heskett <gheskett@shentel.net> - 2016-02-14 02:00 +0100
                Re: SATA cables David Christensen <dpchrist@holgerdanske.com> - 2016-02-14 05:40 +0100
                Re: SATA cables Ric Moore <wayward4now@gmail.com> - 2016-02-14 17:30 +0100
          Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-16 14:40 +0100
            Re: bad sectors on disk Ritesh Raj Sarraf <rrs@researchut.com> - 2016-02-16 15:00 +0100
            Re: bad sectors on disk "Thomas Schmitt" <scdbackup@gmx.net> - 2016-02-16 15:10 +0100
        Re: [computers] bad sectors on disk jdd <jdd@dodin.org> - 2016-02-12 09:30 +0100

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