From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753822AbbAaPpG (ORCPT ); Sat, 31 Jan 2015 10:45:06 -0500 Received: from metis.ext.pengutronix.de ([92.198.50.35]:36313 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751221AbbAaPpE (ORCPT ); Sat, 31 Jan 2015 10:45:04 -0500 Date: Sat, 31 Jan 2015 16:45:00 +0100 From: Markus Pargmann To: Andreas Klauer Cc: Paul Clements , "nbd-general@lists.sourceforge.net" , "linux-kernel@vger.kernel.org" , "kernel@pengutronix.de" , Wouter Verhelst Subject: Re: [Nbd] [RFC 4/4] nbd: Add support for nbd as root device Message-ID: <20150131154500.GK16879@pengutronix.de> References: <1421156665-27318-1-git-send-email-mpa@pengutronix.de> <1421156665-27318-5-git-send-email-mpa@pengutronix.de> <20150129234254.GD15853@grep.be> <20150130080400.GD16879@pengutronix.de> <20150130173014.GA16754@grep.be> <20150131123821.GI16879@pengutronix.de> <20150131144316.GA4328@EIS> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="zPXeIxDajdrcF2en" Content-Disposition: inline In-Reply-To: <20150131144316.GA4328@EIS> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 16:00:36 up 10 days, 5:07, 30 users, load average: 1.68, 1.91, 1.93 User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --zPXeIxDajdrcF2en Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Sat, Jan 31, 2015 at 03:43:16PM +0100, Andreas Klauer wrote: > On Sat, Jan 31, 2015 at 08:52:18AM -0500, Paul Clements wrote: > > The pid is also used to break a hung connection. See nbd_xmit_timeou= t. >=20 > I'm using the pid to find the first free NBD device... >=20 > If it's going away I guess I'll have to stick to /proc/partitions...? > Although last time I tried, it did not work too well. This was just an idea I am thinking about. If it is deprecated, it would still be around for a while. And my first idea was to replace it with other information that are not internal, like 'connected' which would be a boolean type. >=20 > (discussion on the NBD list, March 2014, "How to find a free NBD device") Yes some better non-racy way to find a free nbd would be good. Best regards, Markus --=20 Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | --zPXeIxDajdrcF2en Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUzPh8AAoJEEpcgKtcEGQQZLcQAJI5+feu7X4hJB5sGP5dhfjD VwQPH02iNhMhR1dDmS1WhhgoPdVOrhxg7X+EiXA+mEKvM//9zTolFMkm32BhALGy Plkvvb1mQ5PbAzeThFZIUv5BOzlIirnhwkintUY5E7TYtEQtW9pzEy6AkQrhhdlb f6ZCLDFOy/H3H3VgaFJU7UpT6kRyHuM+VX+hNw7zU50ktdjCveQShTy4Lf8UMjTm JCGSbAFTt6wok3JAwz1Pq5Y3ex3UXxO2/nTov+B03JoFTw+d0qEY41K5ftzlxQXA JL4lhGgD07YlyTsKmFdxwXFiDLslJZloa1MNk1if5gI518L/euDrSh+aRLvYcE3t gGzkydoEukKtd826dtQ7AldyWztBlZtAfcYokCR4Y6CEHKjsg31p2wwzZ8WcXOiP C8wrP66acwRdBhddbTXdCTlyZQSKFpybxRmhidrNLFnZ3xLydlheJcHik78XiWYB au377BbZlscSbwwMefV8bAO9BUhxglBMvzJCb4q1STkKrrBJoc0kgRZZtNSZel3c a+IgR9lLMRJKOi7kwJgx1Be25HAsq8K2MXUADGKzLVOL+RtNMbHfV7maMM9kumQG 1r+ex8Xu0Fx0FBuKYGmtFr8RRQ1fCDHxaROBc5sTWfvBy9yXC1m84P+BmN0P9VE6 E6TP/wDMEvbEcO+MHzxS =deOJ -----END PGP SIGNATURE----- --zPXeIxDajdrcF2en--