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Date: Fri, 3 Sep 2010 16:10:03 +0200
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From: Thorsten Peter <thorsten.peter@googlemail.com>
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Subject: Re: [dm-crypt] dm-crypt / Software Raid5 issues on Ubuntu Lucid
	64bit
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Hey Milan,

could you give me a pointer on how to setup the encryption using LUKS? I am
totally new to dm-crypt. Just used the first method that I found in the
howto ....
Right now I am following Ricks advice and upgrading to 2.6.35 from a ppa
repo.

Thanks,

Thorsten

On Fri, Sep 3, 2010 at 3:57 PM, Milan Broz <mbroz@redhat.com> wrote:

> On 09/03/2010 03:21 PM, Thorsten Peter wrote:
>
> > I am switching from loop-aes to dm_crypt. I am trying to use it on a
> > fresh Ubuntu 64bit server installation with my 6x750gb Software raid5
> array.
> > Array is clean and freshly created, I encrypted it using
> >
> > cryptsetup -y -c aes -h ripemd160 -s 256 create STUFF /dev/md0
>
> Please use LUKS instead here to get persistent header.
>
> > Format went fine, but when I try to copy back large amount of data to
> > the encrypted array (about 900gig) my copy thread always hangs itself at
> > some point during the process. I can't access the array anymore, though
> > the raid itself is fine, no drives are kicked out or anything.
> > Reboot gives me back access and the array is still ok.
> > When the problem occures I see the following trace in log:
> >
> > Aug 29 02:54:24 liberty24 kernel: [221558.020638] Pid: 400, comm:
> > md0_raid5 Not tainted 2.6.32-24-server #41-Ubuntu Unknow
>
> If it is reproducible with upstream kernel, please send me OOPs,
> if not, please use Ubuntu bugzilla - I saw strange reports which were never
> reproducible on upstream.
>
> (The bug seems like something we fixed long time ago.)
>
> Milan
>
>


-- 
--------------------------------
Dipl.-Inf. (FH) Thorsten Peter

E-Mail: Thorsten.Peter@gmail.com
Mobile: 01795322057
--------------------------------

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Hey Milan,<br><br>could you give me a pointer on how to setup the encryptio=
n using LUKS? I am totally new to dm-crypt. Just used the first method that=
 I found in the howto ....<br>Right now I am following Ricks advice and upg=
rading to 2.6.35 from a ppa repo.<br>
<br>Thanks,<br><br>Thorsten<br><br><div class=3D"gmail_quote">On Fri, Sep 3=
, 2010 at 3:57 PM, Milan Broz <span dir=3D"ltr">&lt;<a href=3D"mailto:mbroz=
@redhat.com">mbroz@redhat.com</a>&gt;</span> wrote:<br><blockquote class=3D=
"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rg=
b(204, 204, 204); padding-left: 1ex;">
<div class=3D"im">On 09/03/2010 03:21 PM, Thorsten Peter wrote:<br>
<br>
&gt; I am switching from loop-aes to dm_crypt. I am trying to use it on a<b=
r>
&gt; fresh Ubuntu 64bit server installation with my 6x750gb Software raid5 =
array.<br>
&gt; Array is clean and freshly created, I encrypted it using<br>
&gt;<br>
&gt; cryptsetup -y -c aes -h ripemd160 -s 256 create STUFF /dev/md0<br>
<br>
</div>Please use LUKS instead here to get persistent header.<br>
<div class=3D"im"><br>
&gt; Format went fine, but when I try to copy back large amount of data to<=
br>
&gt; the encrypted array (about 900gig) my copy thread always hangs itself =
at<br>
&gt; some point during the process. I can&#39;t access the array anymore, t=
hough<br>
&gt; the raid itself is fine, no drives are kicked out or anything.<br>
&gt; Reboot gives me back access and the array is still ok.<br>
&gt; When the problem occures I see the following trace in log:<br>
&gt;<br>
&gt; Aug 29 02:54:24 liberty24 kernel: [221558.020638] Pid: 400, comm:<br>
&gt; md0_raid5 Not tainted 2.6.32-24-server #41-Ubuntu Unknow<br>
<br>
</div>If it is reproducible with upstream kernel, please send me OOPs,<br>
if not, please use Ubuntu bugzilla - I saw strange reports which were never=
<br>
reproducible on upstream.<br>
<br>
(The bug seems like something we fixed long time ago.)<br>
<font color=3D"#888888"><br>
Milan<br>
<br>
</font></blockquote></div><br><br clear=3D"all"><br>-- <br>----------------=
----------------<br>Dipl.-Inf. (FH) Thorsten Peter<br><br>E-Mail: <a href=
=3D"mailto:Thorsten.Peter@gmail.com">Thorsten.Peter@gmail.com</a><br>Mobile=
: 01795322057<br>
--------------------------------<br>

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