From owner-cvs-all@FreeBSD.ORG Fri May 30 14:56:58 2008 Return-Path: Delivered-To: cvs-all@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D83DF106564A; Fri, 30 May 2008 14:56:58 +0000 (UTC) (envelope-from ceri@submonkey.net) Received: from shrike.submonkey.net (cpc4-cdif1-0-0-cust805.cdif.cable.ntl.com [82.15.31.38]) by mx1.freebsd.org (Postfix) with ESMTP id 87C408FC0A; Fri, 30 May 2008 14:56:58 +0000 (UTC) (envelope-from ceri@submonkey.net) Received: from ceri by shrike.submonkey.net with local (Exim 4.69 (FreeBSD)) (envelope-from ) id 1K262K-000MoW-V6; Fri, 30 May 2008 15:56:56 +0100 Date: Fri, 30 May 2008 15:56:56 +0100 From: Ceri Davies To: Alexander Leidinger Message-ID: <20080530145656.GB17008@submonkey.net> References: <200805261157.m4QBvnpF025029@repoman.freebsd.org> <20080526144831.K26343@fledge.watson.org> <20080526140735.GA35960@gw.reifenberger.com> <200805281309.49683.jhb@freebsd.org> <20080529140557.GA94385@gw.reifenberger.com> <20080529151233.I3678@fledge.watson.org> <20080529145319.GC94385@gw.reifenberger.com> <20080529155422.T3678@fledge.watson.org> <20080530165051.46452soq4pp07n28@webmail.leidinger.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="qcHopEYAB45HaUaB" Content-Disposition: inline In-Reply-To: <20080530165051.46452soq4pp07n28@webmail.leidinger.net> X-PGP: finger ceri@FreeBSD.org User-Agent: Mutt/1.5.17 (2007-11-01) Sender: Ceri Davies Cc: src-committers@FreeBSD.org, John Baldwin , cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, Michael Reifenberger , Robert Watson Subject: Re: cvs commit: src/usr.sbin/jexec jexec.8 jexec.c X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 May 2008 14:56:59 -0000 --qcHopEYAB45HaUaB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 30, 2008 at 04:50:51PM +0200, Alexander Leidinger wrote: > Quoting Robert Watson (from Thu, 29 May 2008 15:56:= 50=20 > +0100 (BST)): >=20 >> On Thu, 29 May 2008, Michael Reifenberger wrote: >>=20 >>> On Thu, May 29, 2008 at 03:14:20PM +0100, Robert Watson wrote: ... >>>> The other concept that might be of benefit is a "dead" jail vs. a "liv= e"=20 >>>> jail -- with TCP connections taking a while to run down, there can oft= en=20 >>>> be dangling jail references that don't garbage collect for a few=20 >>>> minutes. Perhaps, where there is ambiguity, live jails (ones with=20 >>>> referencing processes) should be preferred to dead ones. >>>=20 >>> Thats something that the admin should take care for. >>=20 >> How might they do that? Remember that any command that works only when= =20 >> the jail IP is "unambiguous" will become effectively non-deterministic a= s=20 >> a result of un-garbage collected jails. So >=20 > Is it feasible to change the hostname of a dying jail? We could prefix it= =20 > with some string at some point of the shutdown... We'd be better off just dropping all the connections at that point. Ceri --=20 That must be wonderful! I don't understand it at all. -- Moliere --qcHopEYAB45HaUaB Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFIQBW4ocfcwTS3JF8RAmBlAJ0Z9rCP60zXFrvl2hRenlS19MV/uQCfeLd8 flpbYVW0HA9abSbY1tR7GP0= =BqmV -----END PGP SIGNATURE----- --qcHopEYAB45HaUaB--