All of lore.kernel.org
 help / color / mirror / Atom feed
From: Milan Broz <gmazyland@gmail.com>
To: "Luís de Sousa" <luis.a.de.sousa@gmail.com>, dm-crypt@saout.de
Subject: Re: [dm-crypt] Fwd: Cannot wipe header on device
Date: Fri, 11 Dec 2015 15:34:34 +0100	[thread overview]
Message-ID: <566ADEFA.7090509@gmail.com> (raw)
In-Reply-To: <CAEtdG7vzPtjzcaD0O4Fa4QoHLApMiBo4vaWRL0x8H-9aCbr+KQ@mail.gmail.com>

On 12/11/2015 03:09 PM, Luís de Sousa wrote:
> On 10 December 2015 at 20:54, H McCurdy <hmccurdy@yahoo.com> wrote:
>>
>> The question is what happens if you try to write many zeros to the device.
>> Does it work or does it throw an error?
>>
>> dd if=/dev/zero of=/dev/sdb1 bs=4096 count=2500 conv=sync
>>
> 
> Hello again,
> 
> The dd command goes on ok, but still the cryptsetup initialisation
> fails - and with the same error (see below).
> 
> I start suspecting this is an issue with the hardware itself. Are
> there other tests I could conduct?
> 
> Thank you,
> 
> Luís
> 
> 
> $ sudo dd if=/dev/zero of=/dev/sdb1 bs=4096 count=2500 conv=sync
> 2500+0 records in
> 2500+0 records out
> 10240000 bytes (10 MB) copied, 0.579948 s, 17.7 MB/s

Could you please try to add to dd command: oflag=direct  and try it again?


Milan

  reply	other threads:[~2015-12-11 14:34 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 [this message]
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
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=566ADEFA.7090509@gmail.com \
    --to=gmazyland@gmail.com \
    --cc=dm-crypt@saout.de \
    --cc=luis.a.de.sousa@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.