Open Stack

On Wed, Jan 15, 2014 at 10:25 PM, Alan Kavanagh
<alan.kavanagh at ericsson.com>wrote:

>  Cheers Guys
>
>
>
> So what would you recommend Oleg. Yes its for linux system.
>

Alan,

Approach proposed below (/dev/zero) is probably better as it allows to
perform at around 60MB/s. Another approach that I've seen flying around is
to generate random string and use it's hashes for dd. There are some
one-liners out there which do that with openssl, just one example:

openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128
count=1 2>/dev/null | base64)" -nosalt < /dev/zero > randomfile.bin

Hope this helps.

--
Best regards,
Oleg Gelbukh


 /Alan
>
>
>
> *From:* Oleg Gelbukh [mailto:ogelbukh at mirantis.com]
> *Sent:* January-15-14 10:30 AM
> *To:* OpenStack Development Mailing List (not for usage questions)
> *Subject:* Re: [openstack-dev] [ironic] Disk Eraser
>
>
>
>
>
> On Wed, Jan 15, 2014 at 6:42 PM, Alexei Kornienko <
> alexei.kornienko at gmail.com> wrote:
>
> If you are working on linux system following can help you:
>
> dd if=/dev/urandom of=/dev/sda bs=4k
>
>
>
> I would not recommend that as /dev/urandom is real slow (10-15 MB/s).
>
>
>
> --
>
> Best regards,
>
> Oleg Gelbukh
>
>
>
>
> :)
> Best Regards,
>
>
>
> On 01/15/2014 04:31 PM, Alan Kavanagh wrote:
>
>   Hi fellow OpenStackers
>
>
>
> Does anyone have any recommendations on open source tools for disk
> erasure/data destruction software. I have so far looked at DBAN and disk
> scrubber and was wondering if ironic team have some better recommendations?
>
>
>
> BR
>
> Alan
>
>
>
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