From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Geerinckx-Rice Subject: Re: btrfs and Guix features [was: gnu: next: Compress the executable.] Date: Wed, 02 Oct 2019 17:59:01 +0200 Message-ID: <87lfu3t9yy.fsf@nckx> References: <20190905095602.15524.75425@vcs0.savannah.gnu.org> <20190905095603.AC57A209A5@vcs0.savannah.gnu.org> <874l1qgc1j.fsf@elephly.net> <871rwuc3es.fsf@ambrevar.xyz> <87blvu32qm.fsf@gnu.org> <878sqxq4ga.fsf@ambrevar.xyz> <875zm0co0t.fsf@ambrevar.xyz> <87h85ipo14.fsf@gnu.org> <87muf9n8sc.fsf@ambrevar.xyz> <8736gw6xrh.fsf@gnu.org> <87y2yonng4.fsf@ambrevar.xyz> <87k19tg63u.fsf@ambrevar.xyz> <87v9tcm8ws.fsf@gnu.org> <87d0fjb5hi.fsf@gmail.com> <87a7an8bfy.fsf@ambrevar.xyz> <87eezv9oo8.fsf@gmail.com> <87y2y3fa39.fsf@ambrevar.xyz> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:55476) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iFh1y-00029F-H2 for guix-devel@gnu.org; Wed, 02 Oct 2019 11:59:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iFh1v-0008Ty-8L for guix-devel@gnu.org; Wed, 02 Oct 2019 11:59:09 -0400 Received: from tobias.gr ([2001:470:7405::1]:39432) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iFh1u-0008SP-Kp for guix-devel@gnu.org; Wed, 02 Oct 2019 11:59:07 -0400 In-reply-to: <87y2y3fa39.fsf@ambrevar.xyz> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Pierre Neidhardt , guix-devel@gnu.org Cc: Maxim Cournoyer --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Pierre, Pierre Neidhardt =E5=86=99=E9=81=93=EF=BC=9A > Maxim Cournoyer writes: > >> I like that Btrfs allows to set different namespaces (think of=20 >> LVM >> logical volumes) on the fly as subvolumes. I use snapshots as=20 >> a mean of >> backups, (using the btrfs send/receive mechanism to backup the=20 >> snapshots >> (differentially) to external storage). > > Aren't btrfs snapshots overlapping with Guix generations? A few =E2=80=98traditional=E2=80=99 distributions use btrfs snapshots to do= what=20 Guix does natively and much better: system roll-backs. Reversing=20 that to call btrfs's features =E2=80=98overlapping=E2=80=99 with Guix seems= very=20 forced to me :-) Guix generations don't even protect the one valuable part: the=20 human-written configuration that created it. You need to do that=20 yourself (probably with git). Everything else is just insanely=20 convenient caching. Generations also don't allow you to btrfs send/receive, which I=20 think was Maxim's main point. If there's another KISSy way to=20 back up whole Guix Systems over the Internet, I don't know of it=20 (rsync can't, nor can borg or restic or=E2=80=A6, and everything else is=20 too much work :o). Kind regards, T G-R --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEfo+u0AlEeO9y5k0W2Imw8BjFSTwFAl2UyUUACgkQ2Imw8BjF STxroRAAro8TT4quOw7WahRTOUpPhsyq9N1qZWd4hu1vFUzpvaSycpEB0IR5ALRO JI+qrM+oe3yVqhNw0Keoo/xXxtfTLGlA28FGuyn+14i6f2vE7+mc6oV6UDXk0V3x ZUToqsbA43PcUQaiiUd3+DqNjEAgmqIQa5zA78jihmPeLuqSWOOLLqkSr+rs5NNZ +lD0gxckpFtovtZmgUa5CzmBMd+f0WjY1bCtgnx1tJCFo911GR3VVrIeWuesieD6 cqNLGXOaD5xt5iyYsbr8L5P1H3cHLbn4Ri0JazBtOe4NrhsrUztWVAkqZ7Rz/szw 8GfKy1fz+mgWovptLqidYNiF2MPUu25DR43xTcj5PQITQf2DDEZPGhUw9mRUE5cn 5HtZu70t5sdNOFe5S4yNSYJYrTk8gz6EKT58k96XtGTmKlQqkqV4xDxXPQD32+j+ 6LrPlUlhUEM6pPkGmEQn+Cj8DYf/BmFzDZ8pt1sbAWFspkcg+aMJAcMjnsxcrMfP Ngg1O7Tzy9Ke9OxMIu6pmn6M/plLhH5Jr2m+3FNgop+gcssyMDbIGK5yYNJ+SL4p FpHby7oNQerr5YIFSHFgVaBqDFqtn7DIfBEhCElSzfCTIMo5JCIofR3ZdSchqOHT 6OLa1Zlzu+5muHEEHEOf7p2dQ0a1oOshske/b036GgaqMoJcvaQ= =+IbO -----END PGP SIGNATURE----- --=-=-=--