From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Fedotov Subject: Re: Wiping object content on removal Date: Tue, 24 Nov 2015 20:04:36 +0300 Message-ID: <565498A4.2070001@mirantis.com> References: <564C8E50.4070503@mirantis.com> <56534265.5040302@mirantis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-lf0-f50.google.com ([209.85.215.50]:36371 "EHLO mail-lf0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751256AbbKXREm (ORCPT ); Tue, 24 Nov 2015 12:04:42 -0500 Received: by lfs39 with SMTP id 39so27594991lfs.3 for ; Tue, 24 Nov 2015 09:04:41 -0800 (PST) In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Gregory Farnum Cc: ceph-devel Gregory, the idea is to wipe object content optionally - when user requests for that. Thus not every delete operation will suffer from that. Igor. On 11/23/2015 8:11 PM, Gregory Farnum wrote: > On Mon, Nov 23, 2015 at 10:44 AM, Igor Fedotov wrote: >> Hi Gregory, >> >> On 23.11.2015 18:52, Gregory Farnum wrote: >>> On Wed, Nov 18, 2015 at 8:42 AM, Igor Fedotov >>> wrote: >>>> Hi Cephers. >>>> >>>> Does Ceph have an ability to wipe object content during one's removal? >>>> Surely one can do that manually from the client but I think that's >>>> ineffective and not 100% secure. >>>> >>>> If no - what's about adding such feature to Ceph? >>>> I can start working on that. >>> Wipe object content during removal of what? The OSD? Or are you >>> talking about secure erase of object data instead of unlinking files? >> I meant secure object removal. >> > Yeah, I just don't see this happening. There aren't even exposed > primitives to do a secure erase on SSDs, are there? Plus turning a > delete operation into a full data overwrite....yuck. > -Greg