From patchwork Sun Sep 13 06:03:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 11772207 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 172AD59D for ; Sun, 13 Sep 2020 06:03:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E335321655 for ; Sun, 13 Sep 2020 06:03:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="htPuHw/4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725912AbgIMGDN (ORCPT ); Sun, 13 Sep 2020 02:03:13 -0400 Received: from esa6.hgst.iphmx.com ([216.71.154.45]:60239 "EHLO esa6.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725894AbgIMGDJ (ORCPT ); Sun, 13 Sep 2020 02:03:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1599976990; x=1631512990; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=YsAP4licp/FrbHC9FXClGglbn+uiiEsUrJY+IXwukho=; b=htPuHw/4OJ8a/tiZGSZs0UNeOiKCErQSd9mEq/X/guSv3aQ0N8kD07lj kboZdReHOymwCzpqPwidngId4IoW9Zf0IzzJnu1hE+7Li6wrKpo6inblw 2+O9fUZekR8az4Gz3df/UtTB0ba+Gxhpf3B9Y3bKGA69+H0GJzze7aMBo DDgReeJGmM9BQfpuDN0IkbacQXCQS7A8WSCtPlGl7M8bj3owK/GqJMZkG SAnWMKYmQVb1KbATmW4wxL4nN6NpzVFl52Y6ug9p+69x7UhQzL+w9xMrc 3W/y3Jy+3FvLY7geEURMQG4NjI5tOLvTeb8E7ky7HwDQiqnimPgm1h9OX Q==; IronPort-SDR: 60HOyl1/6ZZS6HQsyCOGCsLpTlhhK8to+4R7QSHmGPR3BfsnBmOcenDPe6Y9CRlZf6QGUlNGEk /CQMBYuHJY/Be4UocdKrsYuDI5atiWhL7ZzdOMyG6nrjgJzQdjpjHgcggga1PI9HGU2TXB/LB7 YPPP73oIO+IFN3m+Q+QYJSMMYobibHcHCFwOcJvjNUhjPZDk1GGgmx3lN8vhoQxriGFSav5nMc OOlo8be8C/GTYde3u794aYTuuFVWjgf2Y/dISFTU7JvVTIOQB2tUcQ2jHZURZwvSsS9i24vEGF Ahk= X-IronPort-AV: E=Sophos;i="5.76,421,1592841600"; d="scan'208";a="148458729" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 13 Sep 2020 14:03:08 +0800 IronPort-SDR: IKxHBI98MkANDx9N0JAuPUXyC9juDZBsLI9SeZVm4dEwkj/yZpHaOP/VD6NI2TGgqcMNL/P/nO NHUlLMYZPuMQ== Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2020 22:49:27 -0700 IronPort-SDR: arda2lSCABO2PkMjrwHbFcWyo4hr7DqsrdJw54IWaClThu4Rj1yusdGjWc4w8tA20XZDtSJmJH EDvPuBGmunyA== WDCIronportException: Internal Received: from washi.fujisawa.hgst.com ([10.149.53.254]) by uls-op-cesaip02.wdc.com with ESMTP; 12 Sep 2020 23:03:07 -0700 From: Damien Le Moal To: linux-scsi@vger.kernel.org, "Martin K . Petersen" , Borislav Petkov Cc: linux-block@vger.kernel.org, Jens Axboe , Johannes Thumshirn Subject: [PATCH 0/2] Fix handling of host-aware ZBC disks Date: Sun, 13 Sep 2020 15:03:02 +0900 Message-Id: <20200913060304.294898-1-damien.lemoal@wdc.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Martin, Two patches for this cycle (with a cc stable) to fix handling of host-aware ZBC disks that have partitions, that is, used as regular disks. The first patch fixes host-aware disk initialization and command completion processing. It also enables the use of host-aware disks as regular disks when CONFIG_BLK_DEV_ZONED is disabled. The second patch fixes the CONFIG_BLK_DEV_ZONED enabled configuration so that zone append emulation is not initialized for host-aware disks with partitions/used as regular disks. While at it, this patch also removes a problem with sd_zbc_init_disk() error handling in sd_revalidate_disk() by moving this function execution inside sd_zbc_revalidate_zones(). Boris, I tested all this. I could recreate the hang you are seeing with CONFIG_BLK_DEV_ZONED disabled. The cause for this hang was that good_bytes always ended up being 0 for all IOs to the host-aware disk. The fix for this is in the first patch. If you could test this (on top of 5.9-rc), it would be great. Thanks ! Damien Le Moal (2): scsi: Fix handling of host-aware ZBC disks scsi: Fix ZBC disk initialization drivers/scsi/sd.c | 26 +++++++++++------ drivers/scsi/sd.h | 8 +----- drivers/scsi/sd_zbc.c | 66 ++++++++++++++++++++++++++----------------- 3 files changed, 59 insertions(+), 41 deletions(-) Tested-by: Borislav Petkov