Re: bad sectors on disk

From	Ritesh Raj Sarraf <rrs@researchut.com>
Newsgroups	linux.debian.user
Subject	Re: bad sectors on disk
Date	2016-02-10 15:20 +0100
Message-ID	<r0DMC-3gn-5@gated-at.bofh.it> (permalink)
References	<r0ebv-2Tw-5@gated-at.bofh.it> <r0f7A-3uX-15@gated-at.bofh.it>
Organization	RESEARCHUT

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

Hello Thomas,

On Tue, 2016-02-09 at 12:53 +0100, Thomas Schmitt wrote:
> 
> > 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".
> 
> 

I'm now updating my kernel to see if there are any improvements, which
I doubt because there's hardly any change in the repo.

But I've filed a bug to keep the RPi guy informed.

https://github.com/Hexxeh/rpi-firmware/issues/103


> 
> > 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.
> 
> 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've seen the same message again, today. but at different locations.

[62711.477903] sd 0:0:0:0: [sda] UNKNOWN(0x2003) Result: hostbyte=0x00
driverbyte=0x00
[62711.485701] sd 0:0:0:0: [sda] CDB: opcode=0x28 28 00 9d 40 01 47 00
00 08 00
[62711.492910] blk_update_request: I/O error, dev sda, sector
2638217543
[84370.313684] sd 0:0:0:0: [sda] UNKNOWN(0x2003) Result: hostbyte=0x00
driverbyte=0x00
[84370.321532] sd 0:0:0:0: [sda] CDB: opcode=0x28 28 00 a1 40 01 47 00
00 08 00
[84370.328721] blk_update_request: I/O error, dev sda, sector
2705326407

And about your last question, No, apart from these, there are no other
message about any sense code.


> > 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. 
> 

Run the command `man fsck.ext4`

Just `man fsck` takes you to the outdated/wrong util-linux manpage.


> 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.)
> 

Yes. I guess I'll do the same. The other spare one has enough space. So
I'm going to backup everything and try your verification example of dd
below.

Thanks again.


> 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.
-- 
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."

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

csiph-web