Re: 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@xxxxxxxxxx> 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@xxxxxxxxx
Mobile: 01795322057
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