From mboxrd@z Thu Jan 1 00:00:00 1970 From: Loic Dachary Subject: Re: Stopping ceph daemons during the upgrade Date: Mon, 18 Aug 2014 18:24:34 +0200 Message-ID: <53F228C2.4070206@dachary.org> References: <53F21994.5000202@dachary.org> <53F22300.6080702@dachary.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="GolVLS5FoqUmkKR1WTN7IFnFBc5Fp0eHb" Return-path: Received: from mail2.dachary.org ([91.121.57.175]:33388 "EHLO smtp.dmail.dachary.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750977AbaHRQYg (ORCPT ); Mon, 18 Aug 2014 12:24:36 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sage Weil Cc: Dan Van Der Ster , Ceph Development This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --GolVLS5FoqUmkKR1WTN7IFnFBc5Fp0eHb Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Good idea :-) On 18/08/2014 18:08, Sage Weil wrote: > On Mon, 18 Aug 2014, Loic Dachary wrote: >> Hi Dan, >> >> Pre-loading the erasure code plugins will reduce this race condition=20 >> (i.e. the files will have to be modified between the start of the=20 >> ceph-osd process and the bootstrap phase where it loads the plugins fo= r=20 >> it to happen) and it seems to be preferable to stopping the daemons.=20 >> Thanks for giving an additional incentive to go in this direction ! >=20 > BTW Loic, one other thing would could do is have a number or string in = the=20 > .so interface that we bump when the interface changes. Then loading th= e=20 > plugin could fail with a friendly message instead of crashing. >=20 > sage > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" i= n > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >=20 --=20 Lo=EFc Dachary, Artisan Logiciel Libre --GolVLS5FoqUmkKR1WTN7IFnFBc5Fp0eHb Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlPyKMIACgkQ8dLMyEl6F21gcACfXEfe3FWW4JFuDNho7jogG3hc HlsAoKKHJ4Y2SGYrL0VNyoHHAOtHQUuc =H/lw -----END PGP SIGNATURE----- --GolVLS5FoqUmkKR1WTN7IFnFBc5Fp0eHb--