From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael B. Trausch" Subject: Well, I wasn't fast enough on the snapshot... Date: Tue, 28 Apr 2009 22:51:11 -0400 Message-ID: <20090428225111.3bc7fb70@zest.trausch.us> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/cHoISI6FGFQnhfEKeLLctD."; protocol="application/pgp-signature" To: linux-ext4@vger.kernel.org Return-path: Received: from 173-15-213-186-BusName-Atlanta.hfc.comcastbusiness.net ([173.15.213.186]:49105 "EHLO zest.trausch.us" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752242AbZD2CvW (ORCPT ); Tue, 28 Apr 2009 22:51:22 -0400 Received: from zest.trausch.us (unknown [IPv6:::1]) by zest.trausch.us (Postfix) with ESMTPS id 8E137362B for ; Tue, 28 Apr 2009 22:51:19 -0400 (EDT) Sender: linux-ext4-owner@vger.kernel.org List-ID: --Sig_/cHoISI6FGFQnhfEKeLLctD. Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I had sent something and forgot to send it to the list, and then before I went to re-send it, I thought I'd take a look at an idea that I had. As best as I can tell, I either didn't yank the filesystem offline quickly enough, or I must have let some other activity I didn't anticipate (maybe a journal replay) occur. Whatever the cause, it would appear that at least the =C3=BCber-important files that I needed (the history database packs) to make the recovery possible in the first are more than slightly overwritten with totally unrelated garbage. Without them being completely intact, of course, they are useless, so I did in fact lose a week of work. Ugh. All of this said, I remember reading about an undelete mode being proposed for ext4. Are there still plans to implement that in ext4 (or an extension to it) at some point in the future? It would be kind of nice to be able to have an assurance that you'd be able to recover something you _just_ deleted (FSVO "just", of course). Maybe not quite freeing up blocks until a certain amount of time has passed or some other constraint, like space, is hit. I don't know if that is at all plausible or not, just my uneducated attempt at an idea---but in any case, something like that would be kind of nice to have. I haven't shot myself in the foot like this in years... but as I recall, last time I did, I lost more work than this time. At least I have the current state of the working trees. Their history is just gone. Oh, well. Thanks for all the comments and ideas! --- Mike --=20 Don't wait until you have a bug to step through your code. --- Steve Maguire --Sig_/cHoISI6FGFQnhfEKeLLctD. Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkn3wKAACgkQ0kE/IBnFmjByjgCbBlgsJb2BUmjlJPv1wU7mpUfa pncAn2tF3bBtNjFKsCzVLR565OuN1eLb =/yis -----END PGP SIGNATURE----- --Sig_/cHoISI6FGFQnhfEKeLLctD.--