Mark Hindley <[email protected]>
to [email protected].
Full text available.Mark Hindley <[email protected]>
to [email protected].
Full text available.Received: (at 176) by bugs.devuan.org; 10 Feb 2023 10:07:47 +0000 Return-Path: <[email protected]> Delivered-To: [email protected] Received: from email.devuan.org [2001:41d0:2:d06e::5c4:2612] by doc.devuan.org with IMAP (fetchmail-6.4.16) for <debbugs@localhost> (single-drop); Fri, 10 Feb 2023 10:07:47 +0000 (UTC) Received: from email.devuan.org by email.devuan.org with LMTP id RKQlOykX5mPMBQAAmSBk0A (envelope-from <[email protected]>) for <[email protected]>; Fri, 10 Feb 2023 10:06:33 +0000 Received: by email.devuan.org (Postfix, from userid 109) id E6495B10; Fri, 10 Feb 2023 10:06:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on email.devuan.org X-Spam-Level: X-Spam-Status: No, score=0.4 required=5.0 tests=RDNS_DYNAMIC,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=193.36.131.86; helo=mx.hindley.org.uk; [email protected]; receiver=<UNKNOWN> Received: from mx.hindley.org.uk (193-36-131-86.cfwn.uk [193.36.131.86]) by email.devuan.org (Postfix) with ESMTPS id E5F7884 for <[email protected]>; Fri, 10 Feb 2023 10:06:28 +0000 (UTC) Received: from apollo.hindleynet ([192.168.1.3] helo=hindley.org.uk) by mx.hindley.org.uk with smtp (Exim 4.84_2) (envelope-from <[email protected]>) id 1pQQIV-0002nR-7j; Fri, 10 Feb 2023 10:06:27 +0000 Received: (nullmailer pid 32435 invoked by uid 1000); Fri, 10 Feb 2023 10:06:27 -0000 Date: Fri, 10 Feb 2023 10:06:27 +0000 From: Mark Hindley <[email protected]> To: [email protected] Cc: Guenther Brunthaler <[email protected]> Subject: Re: bug#176: vde2: ifup plugin-stanza "vde2-plug" does not capture correct PID Message-ID: <[email protected]> References: <[email protected]> <[email protected]> <[email protected]> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <[email protected]> X-Debbugs-No-Ack: No Thanks Control: forwarded -1 https://bugs.debian.org/1031003 Control: tags -1 - moreinfo Forwarded to Debian BTS on your behalf. Mark
[email protected], [email protected]:bug#176; Package vde2.
Full text available.Mark Hindley <[email protected]>
to [email protected].
Full text available.Received: (at 176) by bugs.devuan.org; 10 Jan 2023 18:48:10 +0000 Return-Path: <[email protected]> Delivered-To: [email protected] Received: from email.devuan.org [2001:41d0:2:d06e::5c4:2612] by doc.devuan.org with IMAP (fetchmail-6.4.16) for <debbugs@localhost> (single-drop); Tue, 10 Jan 2023 18:48:10 +0000 (UTC) Received: from email.devuan.org by email.devuan.org with LMTP id 3HsvEbayvWNpMQAAmSBk0A (envelope-from <[email protected]>) for <[email protected]>; Tue, 10 Jan 2023 18:47:18 +0000 Received: by email.devuan.org (Postfix, from userid 109) id 373E7B85; Tue, 10 Jan 2023 18:47:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on email.devuan.org X-Spam-Level: X-Spam-Status: No, score=0.4 required=5.0 tests=RDNS_DYNAMIC,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=193.36.131.86; helo=mx.hindley.org.uk; [email protected]; receiver=<UNKNOWN> Received: from mx.hindley.org.uk (193-36-131-86.cfwn.uk [193.36.131.86]) by email.devuan.org (Postfix) with ESMTPS id B729D2A8 for <[email protected]>; Tue, 10 Jan 2023 18:47:17 +0000 (UTC) Received: from apollo.hindleynet ([192.168.1.3] helo=hindley.org.uk) by mx.hindley.org.uk with smtp (Exim 4.84_2) (envelope-from <[email protected]>) id 1pFJeW-0003lP-7Q; Tue, 10 Jan 2023 18:47:16 +0000 Received: (nullmailer pid 21915 invoked by uid 1000); Tue, 10 Jan 2023 18:47:16 -0000 Date: Tue, 10 Jan 2023 18:47:16 +0000 From: Mark Hindley <[email protected]> To: Guenther Brunthaler <[email protected]>, [email protected] Subject: Re: bug#176: vde2: ifup plugin-stanza "vde2-plug" does not capture correct PID Message-ID: <[email protected]> References: <[email protected]> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <[email protected]> X-Debbugs-No-Ack: No Thanks Control: tags -1 moreinfo debian This appears unchanged in the Debian sources. Is it still an issue? If so, please report to Debian BTS as it is not a forked package. Thanks Mark
[email protected], [email protected]:bug#176; Package vde2.
Full text available.OmegaPhil <[email protected]>
to [email protected].
Full text available.Received: (at submit) by bugs.devuan.org; 20 Jan 2018 06:50:07 +0000 Return-Path: <[email protected]> Delivered-To: [email protected] Received: from tupac3.dyne.org [195.169.149.119] by fulcanelli with IMAP (fetchmail-6.3.26) for <debbugs@localhost> (single-drop); Sat, 20 Jan 2018 07:50:07 +0100 (CET) Received: from mout.gmx.net (mout.gmx.net [212.227.17.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by vm6.ganeti.dyne.org (Postfix) with ESMTPS id BB294F609B9 for <[email protected]>; Sat, 20 Jan 2018 07:43:23 +0100 (CET) Received: from [10.157.38.112] ([178.165.130.246]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0LZiQy-1f6Jo617Eq-00lTfK; Sat, 20 Jan 2018 07:43:14 +0100 From: Guenther Brunthaler <[email protected]> Subject: vde2: ifup plugin-stanza "vde2-plug" does not capture correct PID To: Devuan Bug Tracking System <[email protected]> Message-ID: <[email protected]> Date: Sat, 20 Jan 2018 07:43:10 +0100 User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:tjoWr6/R12t6fEqLIOmrPEiApwJ3zocVkqwOKNTN9ldYMptqHhL xNhL2uH0TeqhzqpcvtBCJzjqpMfgK/Y9EgYZaOd3EXMbUo3JSM0OJYkH+9CKTAfN5xcwxZ7 FaUAuGntb/8NvEMNkMUxiEXk2sfT22/SGPMyFQwpPhVUldhQZnMoDBIz0xrm/XmDZw0jir3 3AkYGXcWEVStY7aoj9ejQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:GAajBQmZvvc=:aJTWUy0cjKOjH5M1Ag0m3/ sjuLSd1Et2VR+HP792h39aoEXcv0uw2+nGMgadSlPxWAPkSDunSIT0rA6fTVaeIZ5JRIcOivU sR2dAXSQcwoPzm4RGQz9lw55ICbxH4BLiDB+Wwdj8hHzvIUnBCj26xNQ4L19E6Atz0OSxwIyc Mh76930V9dfsGjyhAECupeGCPTmqTPVCNO4CWIKDzv3T0Mr7quugCNrAOpk/c7fu5+15WT3Jw wUHdb1qFtl4a0bZBBLYlEEsqeOfoRW93n11TjXCiME5knOgmPx08k3OeAgUz/k5o0fv3xD8oc 6bZ0Ky5acxGqWP2r8+61PEq0d6NC5QwlFUUnK4JYC5HaKd8O/yJSLACiugw+9RdaDXugXG0mR F6m4A+4Kl7UHMmHqQKXtBfNdmFB0zeEkImLYXEWdJ7YceQRVUgL65nv48RBxzKdKCO5w2GsH1 NLE3js6YLexhHJWd3gxL9OINSD3itSfbjN9KrOfj0Y83D3AlkNE57rhhYZQCBPlIASzd0PnCv Ge0lYhXPvnL9+slyb1tIr8EFZOQO5JAvZx0UKFFRHsMK+xJ+S91Q8Is7a15jk8m+0V0Cys2v+ wpAKDSUUdpctvzU0UFAlUwVNAvwcFMe9q//RDC47bq0xaqvqTWTRj0cB+XtMTQ83P1ph0OXI1 p/EgDTw4HRAQedGkyt4hl0PY6/Yak1mx9UXVESWRmh2Wot6Ou9SbWx8+NkD6ECEJD+mkzMdrZ 5Yhows9MvO9PcS31oaljQt5IufqRHesZ6b2OEEzNB59if7iW9orrdYZhllGJ71np+4ZA3zYec HY5j1TjBS1mxsEELOlCz4dsh5ylOTGWyeFj19M6Wo8YwvzcXywEdsYf0nRirvWD8f19u32I X-Spam-Status: No, score=0.5 required=5.0 tests=FROM_LOCAL_NOVOWEL, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_PASS autolearn=disabled version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tupac3.dyne.org Package: vde2 Version: 2.3.2+r586-1 Severity: normal X-Debbugs-Cc: [email protected] Dear Maintainer, Preliminary remark: Even though I am using Devuan rather then Debian, I have verified that the problem still exists in the current "stretch" version (vde2_2.3.2+r586-2.1_amd64.deb) of the package. "ifup" for a virtual VDE2 tun/tap plug records an incorrect PID for the vde_plug2tap process in the pidfile, and "ifdown" will therefore not be able to shut it down. As a consequence, the vde_plug2tap process keeps running, wasting resources, and the tun/tap interface remains still visible with ifconfig -a, even though it will have been deconfigured. The problem arises when using ifup/ifdown to configure additional tun/tap interfaces for a VDE2 switch. Such additional network interfaces are necessary when binding normal applications running on the local box (and not in VM guests) to different VLANs managed by the same virtual VDE2 switch. For instance, when adding the following /etc/network/interfaces entry iface ethsmb inet static vde2-plug vde_plug2tap -p 5 -s /var/run/vde2/ethvm.ctl ethsmb address 10.35.43.113 netmask 255.255.0.0 then "ifup ethsmb" makes a new network interface "ethsmb" appear which is connected to port 5 on the virtual switch (which itself manages another network interface "ethvm"). "ifdown ethsmb" should make the new interface go away, but it won't. The problem is located in plug-in script /etc/network/if-pre-up.d/vde2 from the package. This script contains a command start-stop-daemon --start --quiet --pidfile $PIDFILE \ --make-pidfile --background \ --exec $DPIPE -- $VDE_PLUG -g $GROUP -m 660 $CTLDIR = "$@" It seems dpipe double-forks under certain situations, at least in this case, and so the --background option of start-stop-daemon has no effect and the --pidfile captures the wrong PID. This can also be verified by just running the resulting dpipe command manually without the "start-stop-daemon": It returns immediately, obviously forking the processes into the background, and $! does *not* contain a valid process ID. I have also figured out what needs to be changed in order to make everything work as intended again: Just exchange the order of commands connected with dpipe. In other words, change the --exec $DPIPE -- $VDE_PLUG -g $GROUP -m 660 $CTLDIR = "$@" line into --exec $DPIPE -- "$@" = $VDE_PLUG -g $GROUP -m 660 $CTLDIR It turns out that the order of commands in dpipe is not irrelevant if the processes have different lifetimes. In such a case, the first command must be that with the longer lifetime, because dpipe will exec itself into that command, and its PID will be used by the caller of dpipe in order to terminate the pipeline later. -- System Information: Distributor ID: Devuan Description: Devuan GNU/Linux 1.0 (jessie) Release: 1.0 Codename: jessie Architecture: x86_64 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages vde2 depends on: ii adduser 3.113+nmu3 ii libc6 2.19-18+deb8u10 ii libpcap0.8 1.6.2-2 ii libvde0 2.3.2+r586-1 ii libvdeplug2 2.3.2+r586-1 vde2 recommends no packages. Versions of packages vde2 suggests: pn qemu <none> ii qemu-kvm 1:2.1+dfsg-12+deb8u6 ii vde2-cryptcab 2.3.2+r586-1 -- no debconf information
Guenther Brunthaler <[email protected]>:[email protected].
Full text available.[email protected], [email protected]:bug#176; Package vde2.
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Copyright (C) 1999 Darren O. Benham,
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