From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx03.extmail.prod.ext.phx2.redhat.com [10.5.110.27]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BA47E196AE for ; Tue, 24 Sep 2019 09:42:36 +0000 (UTC) Received: from m4a0039g.houston.softwaregrp.com (m4a0039g.houston.softwaregrp.com [15.124.2.85]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DF15880F83 for ; Tue, 24 Sep 2019 09:42:34 +0000 (UTC) Received: FROM m4a0039g.houston.softwaregrp.com (15.120.17.146) BY m4a0039g.houston.softwaregrp.com WITH ESMTP FOR linux-lvm@redhat.com; Tue, 24 Sep 2019 09:41:40 +0000 From: Gang He Date: Tue, 24 Sep 2019 09:04:56 +0000 Message-ID: Content-Language: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [linux-lvm] questions about dlm: add TCP multihoming/failover support Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: To: LVM general discussion and development Hello List, When I tried to upgrade libdlm to v4.0.9, I can see one commit for add TCP multihoming/failover support. commit 7a273b8714da400d292d6c9762acedcde1997e52 Author: David Windsor Date: Tue May 7 09:56:53 2019 -0400 dlm_controld: bind to all interfaces for failover According to the commit description, I can find there are some kernel related patches(fs/dlm in kernel space). e.g. https://www.redhat.com/archives/cluster-devel/2019-January/msg00009.html https://www.redhat.com/archives/cluster-devel/2019-January/msg00010.html But, so far, these kernel patches have not been in Torvalds kernel git tree. That means we cannot use this feature, although we upgrade libdlm to v4.0.9? Second, how to use this feature after these kernel patch are available? There is any document to guide the use to use(or test) this feature? Third, There is any differences between TCP multihoming/failover feature and STCP feature? Please give some comments when choice two features? Thanks Gang