From patchwork Wed May 13 07:07:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 11545239 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5EF35112C for ; Wed, 13 May 2020 07:08:27 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D15020769 for ; Wed, 13 May 2020 07:08:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="U1/ulGt1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D15020769 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=dm-devel-bounces@redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1589353706; 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=40AtQeSCgWAoSj+dLNaIzRM2pLAOL/tCP0g+qqtCmRs=; b=U1/ulGt1o59ldte7Sb04wPld+Q50cYhOgE5bk5r/U/QvDMZosz/iQzmbg0AukZipJV3615 7tYQA9dSj6o35ayqAUpTONACwGOWWTdJXnlViEbabDqRil6WuplZtcW47ooaAJtDUX4+jy dexlVROq84m9uNktKIu83cYJnt0iifw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-368-fxbD5Jy_PD65krGd8SKvcg-1; Wed, 13 May 2020 03:08:23 -0400 X-MC-Unique: fxbD5Jy_PD65krGd8SKvcg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7F44380B70D; Wed, 13 May 2020 07:08:19 +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 640565D9C5; Wed, 13 May 2020 07:08:19 +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 10A544CAA8; Wed, 13 May 2020 07:08:19 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 04D77gdM025856 for ; Wed, 13 May 2020 03:07:42 -0400 Received: by smtp.corp.redhat.com (Postfix) id 51C1C112314; Wed, 13 May 2020 07:07:42 +0000 (UTC) Delivered-To: dm-devel@redhat.com Received: from mimecast-mx02.redhat.com (mimecast06.extmail.prod.ext.rdu2.redhat.com [10.11.55.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4E006115DFA for ; Wed, 13 May 2020 07:07:39 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 988C1185A78B for ; Wed, 13 May 2020 07:07:39 +0000 (UTC) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-459-f6m6dJbJPPa5s-qbmEmhWA-1; Wed, 13 May 2020 03:07:35 -0400 X-MC-Unique: f6m6dJbJPPa5s-qbmEmhWA-1 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 42524B077; Wed, 13 May 2020 07:07:36 +0000 (UTC) From: Hannes Reinecke To: Mike Snitzer Date: Wed, 13 May 2020 09:07:27 +0200 Message-Id: <20200513070729.71461-1-hare@suse.de> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-loop: dm-devel@redhat.com Cc: Damien LeMoal , dm-devel@redhat.com Subject: [dm-devel] [PATCH 0/2] dm-zoned: improve cache performance 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 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Hi all, here are two patches to improve performance when a regular device is specified for dm-zoned. Damien noted that we have a performance drop after the zones on the regular device are used up, as then the random zones on the zoned device are being used, _and_ reclaim is running on the same disk. This slows down I/O whle using random zones, increasing again after the random zones are used up. This patchset fixes this by not allowing random zones for caching if a regular device is present. Patch is relative to the dm-5.8 branch from git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git As usual, comments and reviews are welcome. Hannes Reinecke (2): dm-zoned: invert zone check in dmz_reset_zone() dm-zoned: split off random and cache zones .../admin-guide/device-mapper/dm-zoned.rst | 17 +- drivers/md/dm-zoned-metadata.c | 157 +++++++++++++----- drivers/md/dm-zoned-reclaim.c | 70 ++++---- drivers/md/dm-zoned-target.c | 19 ++- drivers/md/dm-zoned.h | 7 +- 5 files changed, 189 insertions(+), 81 deletions(-)