From owner-freebsd-questions@freebsd.org Sat Jan 16 06:21:49 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CC5D74D543F for ; Sat, 16 Jan 2021 06:21:49 +0000 (UTC) (envelope-from freebsd-lists-5@thismonkey.com) Received: from mail-01.thismonkey.com (mail-01.thismonkey.com [IPv6:2406:3400:35e:6602::a01:232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "thismonkey.com", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DHny25vJ0z4vl8 for ; Sat, 16 Jan 2021 06:21:46 +0000 (UTC) (envelope-from freebsd-lists-5@thismonkey.com) Received: from mailhub-01.thismonkey.com (mailhub-01.thismonkey.com [IPv6:2406:3400:35e:6601:0:0:a01:11e]) by mail-01.thismonkey.com (8.15.2/8.15.2) with ESMTP id 10G6LVk0036637; Sat, 16 Jan 2021 17:21:31 +1100 (EST) (envelope-from freebsd-lists-5@thismonkey.com) X-TM-Via-MX: mailhub-01.thismonkey.com Received: from utility-01.thismonkey.com (utility-01.thismonkey.com [IPv6:2406:3400:35e:6601:0:0:a01:120]) by mailhub-01.thismonkey.com (8.15.2/8.15.2) with ESMTPS id 10G6LVS9073971 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Sat, 16 Jan 2021 17:21:31 +1100 (AEDT) (envelope-from freebsd-lists-5@thismonkey.com) Received: from utility-01.thismonkey.com (localhost [127.0.0.1]) by utility-01.thismonkey.com (8.16.1/8.16.1) with ESMTP id 10G6LVc1044828; Sat, 16 Jan 2021 17:21:31 +1100 (EST) (envelope-from freebsd-lists-5@thismonkey.com) Received: (from root@localhost) by utility-01.thismonkey.com (8.16.1/8.16.1/Submit) id 10G6LUMl044816; Sat, 16 Jan 2021 17:21:30 +1100 (EST) (envelope-from freebsd-lists-5@thismonkey.com) Date: Sat, 16 Jan 2021 17:21:30 +1100 From: Scott To: Ekkehard Gehm Cc: freebsd-questions@freebsd.org Subject: Re: iSCSI initiator to target with multiple IPs Message-ID: Mail-Followup-To: Ekkehard Gehm , freebsd-questions@freebsd.org References: <0365d82d-88f2-6ce8-b730-edd7982ba083@sudoers.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0365d82d-88f2-6ce8-b730-edd7982ba083@sudoers.net> X-Virus-Scanned: clamav-milter 0.102.2 at mail-01.thismonkey.com X-Virus-Status: Clean X-Rspamd-Queue-Id: 4DHny25vJ0z4vl8 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=pass (policy=none) header.from=thismonkey.com; spf=pass (mx1.freebsd.org: domain of freebsd-lists-5@thismonkey.com designates 2406:3400:35e:6602::a01:232 as permitted sender) smtp.mailfrom=freebsd-lists-5@thismonkey.com X-Spamd-Result: default: False [-3.80 / 15.00]; MID_RHS_MATCH_FROM(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2406:3400:35e:6602::a01:232:from]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; SPAMHAUS_ZRD(0.00)[2406:3400:35e:6602::a01:232:from:127.0.2.255]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[thismonkey.com,none]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:10143, ipnet:2406:3400:340::/42, country:AU]; RCVD_TLS_LAST(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Jan 2021 06:21:49 -0000 On Fri, Jan 15, 2021 at 12:30:52PM +0100, Ekkehard Gehm wrote: > Ahoy! > > I hope someone can give me a hint on an issue I have with iSCSI. > > I have a FreeBSD Server (the iSCSI initiator) which connects to a Dell > Equilogic RAID (the iSCSI target). So far no big deal. But... The Target > has one IP to connect to but in reality it has 8 interfaces with > different IPs for traffic shaping. > > So. The initial connect to the pool-ip will result in a connection to > one of those 8 ips. Every now and then, the RAID (target) shifts the > interfaces. That will result in a message that the the target has moved > to another ip... And that is where shit happens - My FreeBSD initiator > drops the target completely (With a warning " target requests logout; > removing session")... Bad thing :-) > > I don't know where to look. Is it multipath? MPIO? > > Any hint is highly appreciated :-) > > Cheers! > > Ekki > > Hi, more from a networking perspective than an iSCSI one: when you say that the initial connection to the pool-ip results in a connection to an interface address - is this an iSCSI redirection or is there a proxy of sorts (that would obscure the real target address)? Put another way, if configured to connect to IP 1.1.1.1, after the connection would netstat show the initiator connected to 1.1.1.1 or another address? Scott