Open Stack

On Wed, Jan 15, 2014 at 11:25 AM, Alan Kavanagh
<alan.kavanagh at ericsson.com> wrote:
> Cheers Guys
>
>
>
> So what would you recommend Oleg. Yes its for linux system.
>
>
>
> /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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For better or worse, the LVM driver in cinder currently uses /dev/zero
(same dd method described above).  It's not without it's performance
issues but much faster than using /dev/random or shred etc.

It gets the job done and is probably the best compromise between
performance and security.

Thanks,
John