[openstack-dev] [Fuel] Wiping node's disks on delete

Dmitry Guryanov dguryanov at mirantis.com
Wed Mar 23 16:49:49 UTC 2016

On Wed, 2016-03-23 at 18:22 +0300, Alexander Gordeev wrote:
> Hello Dmitry,
> .....
> Yep, astute needs to be fixed as the way how it wipes the disks is
> way too fragile, dangerous and not always reliable due to what you
> mentioned above.
> Nope, I think that zeroing of 446 bytes is not enough. Why don't we
> want to wipe bios_boot partition too? Let's wipe all grub leftovers
> such as bios_boot partitions too. They doesn't contain any FS, so
> unlikely that kernel or any other process will prevent us from wiping
> it. No errors, no kernel panic are expected.
> On Tue, Mar 22, 2016 at 5:06 PM, Dmitry Guryanov <dguryanov at mirantis.
> com> wrote:
> > For GPT disks and non-UEFI boot this method will work, since MBR
> > will still contain first stage of a bootloader code.
> > 
> Agreed, it will work. But how about bios_boot partition? What do you
> think?

I have no objections against clearing bios boot partition, but could
you describe scenario, how non-efi system will boot with valid
BIOS_grub and wiped boot code in MBR?

> Thanks,  Alex.
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