From patchwork Wed Dec 15 17:44:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Marzinski X-Patchwork-Id: 12678881 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 53964C433EF for ; Wed, 15 Dec 2021 17:44:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639590268; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=mrRElHOAlpEyjHdgcNZa4q+I2sIxS68i0kz3CZ4Nj2I=; b=No/27U6nH73Xqk5RasVbUkVDm04tVf8ILsxqk7J8vGsH4i9X1OaTuT9a7kHFPeUHCm9ShO ZVcwY+3Ge+cZgQDTojom6i6oK8ZVZJyBDaS4P5P1TFhfymYk2wFTrrH/iOssPSvfwZ9R80 /qDwzcf6XQIiKL6EblcjOCQA1egqxKI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-403-Clu8DntwMRKTkG7Z5_Y7Hg-1; Wed, 15 Dec 2021 12:44:24 -0500 X-MC-Unique: Clu8DntwMRKTkG7Z5_Y7Hg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4624364170; Wed, 15 Dec 2021 17:44:18 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DE83A4D73A; Wed, 15 Dec 2021 17:44:17 +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 B12A64BB7C; Wed, 15 Dec 2021 17:44:16 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 1BFHiEhv018381 for ; Wed, 15 Dec 2021 12:44:14 -0500 Received: by smtp.corp.redhat.com (Postfix) id 5401F4D73A; Wed, 15 Dec 2021 17:44:14 +0000 (UTC) Received: from octiron.msp.redhat.com (unknown [10.15.80.209]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3BFF47A22C; Wed, 15 Dec 2021 17:44:14 +0000 (UTC) Received: from octiron.msp.redhat.com (localhost.localdomain [127.0.0.1]) by octiron.msp.redhat.com (8.14.9/8.14.9) with ESMTP id 1BFHiBdE011331; Wed, 15 Dec 2021 11:44:12 -0600 Received: (from bmarzins@localhost) by octiron.msp.redhat.com (8.14.9/8.14.9/Submit) id 1BFHiB9F011330; Wed, 15 Dec 2021 11:44:11 -0600 From: Benjamin Marzinski To: Christophe Varoqui Date: Wed, 15 Dec 2021 11:44:07 -0600 Message-Id: <1639590250-11293-1-git-send-email-bmarzins@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-loop: dm-devel@redhat.com Cc: device-mapper development , Martin Wilck Subject: [dm-devel] [PATCH v2 0/3] multipathd: avoid unnecessary read-only reloads 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 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com This patchset is an expanded version of my single patch "multipathd: avoid unnecessary path read-only reloads" That also makes some changes to how the multipath dm_info is handled. changes from v1, (suggested by Martin Wilck): 0001: This has been completely rewritten to embed the dmi structure in the multipath structure. This will require a major version bump for libmultipath, which I've not included. 0003: sysfs_get_ro() has been moved to mutlipathd, and needs_ro_update() has been changed to work with the embedded dmi structure. Benjamin Marzinski (3): libmultipath: embed dm_info in multipath structure multipathd: update dm_info on multipath change events multipathd: avoid unnecessary path read-only reloads libmultipath/configure.c | 7 +++-- libmultipath/devmapper.c | 51 +++++++++++-------------------- libmultipath/devmapper.h | 3 +- libmultipath/libmultipath.version | 1 + libmultipath/print.c | 12 +++++--- libmultipath/structs.c | 10 ++---- libmultipath/structs.h | 3 +- multipathd/main.c | 51 +++++++++++++++++++++++++++++-- 8 files changed, 85 insertions(+), 53 deletions(-)