From patchwork Fri Jan 19 00:29:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Wilck X-Patchwork-Id: 10174365 X-Patchwork-Delegate: christophe.varoqui@free.fr Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 27171602B1 for ; Fri, 19 Jan 2018 00:31:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1DD4728469 for ; Fri, 19 Jan 2018 00:31:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 12B7928560; Fri, 19 Jan 2018 00:31:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id AED1A28469 for ; Fri, 19 Jan 2018 00:31:29 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CFC99C0586A0; Fri, 19 Jan 2018 00:31:28 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id ADA5160CA1; Fri, 19 Jan 2018 00:31:28 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 7F80218033DC; Fri, 19 Jan 2018 00:31:28 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w0J0TsqL013429 for ; Thu, 18 Jan 2018 19:29:54 -0500 Received: by smtp.corp.redhat.com (Postfix) id 54A9618A25; Fri, 19 Jan 2018 00:29:54 +0000 (UTC) Delivered-To: dm-devel@redhat.com Received: from mx1.redhat.com (ext-mx01.extmail.prod.ext.phx2.redhat.com [10.5.110.25]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4D2A5600C0; Fri, 19 Jan 2018 00:29:54 +0000 (UTC) Received: from smtp.nue.novell.com (smtp.nue.novell.com [195.135.221.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id F00BECDB; Fri, 19 Jan 2018 00:29:52 +0000 (UTC) Received: from emea4-mta.ukb.novell.com ([10.120.13.87]) by smtp.nue.novell.com with ESMTP (TLS encrypted); Fri, 19 Jan 2018 01:29:51 +0100 Received: from apollon.suse.de.de (nwb-a10-snat.microfocus.com [10.120.13.201]) by emea4-mta.ukb.novell.com with ESMTP (TLS encrypted); Fri, 19 Jan 2018 00:29:40 +0000 From: Martin Wilck To: Christophe Varoqui , dm-devel@redhat.com, Benjamin Marzinski Date: Fri, 19 Jan 2018 01:29:16 +0100 Message-Id: <20180119002916.10323-17-mwilck@suse.com> In-Reply-To: <20180119002916.10323-1-mwilck@suse.com> References: <20180119002916.10323-1-mwilck@suse.com> X-Greylist: Sender passed SPF test, Sender IP whitelisted by DNSRBL, ACL 207 matched, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Fri, 19 Jan 2018 00:29:53 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Fri, 19 Jan 2018 00:29:53 +0000 (UTC) for IP:'195.135.221.5' DOMAIN:'smtp.nue.novell.com' HELO:'smtp.nue.novell.com' FROM:'mwilck@suse.com' RCPT:'' X-RedHat-Spam-Score: -2.301 (RCVD_IN_DNSWL_MED, SPF_PASS) 195.135.221.5 smtp.nue.novell.com 195.135.221.5 smtp.nue.novell.com X-Scanned-By: MIMEDefang 2.78 on 10.5.110.25 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-loop: dm-devel@redhat.com Cc: Xose Vazquez Perez , Martin Wilck Subject: [dm-devel] [RFC PATCH 16/16] libmultipath: trigger path uevent only when necessary X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 19 Jan 2018 00:31:29 +0000 (UTC) X-Virus-Scanned: ClamAV using ClamSMTP Paths that are already classified as DM_MULTIPATH_DEVICE_PATH don't need to be retriggered. As an exception, trigger events for paths in "maybe" state that are waiting to be updated. --- libmultipath/configure.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/libmultipath/configure.c b/libmultipath/configure.c index c08ea5b8decc..f8d1fa452014 100644 --- a/libmultipath/configure.c +++ b/libmultipath/configure.c @@ -447,8 +447,28 @@ trigger_paths_udev_change(const struct multipath *mpp) if (!pgp->paths) continue; vector_foreach_slot(pgp->paths, pp, j) { + const char *env; + if (!pp->udev) continue; + /* + * Paths that are already classified as multipath + * members don't need another uevent. + */ + env = udev_device_get_property_value( + pp->udev, "DM_MULTIPATH_DEVICE_PATH"); + if (env != NULL && !strcmp(env, "1")) { + /* + * Nonempty DM_MULTIPATH_SAVED_FS_TYPE means + * path is in "maybe" state and timer is running + * Send uevent now (see multipath.rules). + */ + env = udev_device_get_property_value( + pp->udev, "DM_MULTIPATH_SAVED_FS_TYPE"); + if (env == NULL) + continue; + } + condlog(4, "triggering change uevent for %s", pp->dev); sysfs_attr_set_value(pp->udev, "uevent", "change", strlen("change")); }