From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC789C41513 for ; Tue, 15 Aug 2023 15:49:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238274AbjHOPse (ORCPT ); Tue, 15 Aug 2023 11:48:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238356AbjHOPsW (ORCPT ); Tue, 15 Aug 2023 11:48:22 -0400 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 598B519A5; Tue, 15 Aug 2023 08:48:07 -0700 (PDT) Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1bc7e65ea44so37612435ad.1; Tue, 15 Aug 2023 08:48:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692114487; x=1692719287; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=56LIeDt1iyVJwWjqDv8awcpNYpEag0enuy0hhcJlIbM=; b=EKnxV7S1XRby17wcnCKYbmyc83VTlrw7twvURBYWXF/4r3YWusd6DwWYzByB0B7z9I B4Xz5vasVYkXn+xcebGLyUAhsm0mf6mSXKeRFL2ulY0FfMEVX8D78QUI1tAgZcRsa4aD 0HbPXrCLP+Yvh+RG1fq92YQMsj1p0HnzFR3/CPuHPylPDeX2DdpDjmYLi2PNFloIkpuf HfViwuiQDT9+PkWyVSIsSHIZVJvX9UzF/Dr4e4fjWkvNDM4sl6Hl0ljSA5UXtEAIC1Mm vglyzCfOVZTleWwbsTfn/uZNmlsOBfgDQiyzug3xbK+p5MCJ0DaXLtDaEkimrpxumJQD no4Q== X-Gm-Message-State: AOJu0YxDjDn2aLLsd3eJSMK22EqvmNF0r80iXm95QMveYI1e/KUznk0P vIFRYtptWvecTIhIbYo/jpc= X-Google-Smtp-Source: AGHT+IEVXp0SBmcVdojMyzvf8gzVkPb+m2qKbTBEWeRmJKeiDig1PblXjpao6Tx0/Ns7VqolqBf6Yw== X-Received: by 2002:a17:902:e5c8:b0:1bc:7001:6e69 with SMTP id u8-20020a170902e5c800b001bc70016e69mr2960687plf.23.1692114486679; Tue, 15 Aug 2023 08:48:06 -0700 (PDT) Received: from ?IPV6:2620:15c:211:201:a40d:28ad:b5b9:2ae2? ([2620:15c:211:201:a40d:28ad:b5b9:2ae2]) by smtp.gmail.com with ESMTPSA id ji6-20020a170903324600b001bdf046ed63sm2668193plb.141.2023.08.15.08.48.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Aug 2023 08:48:06 -0700 (PDT) Message-ID: Date: Tue, 15 Aug 2023 08:48:04 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.1 Subject: Re: [PATCH 00/13] scsi: Support LUN/target based error handle Content-Language: en-US To: "haowenchao (C)" , "James E . J . Bottomley" , "Martin K . Petersen" , Hannes Reinecke , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dan Carpenter , louhongxiang@huawei.com References: <20230723234422.1629194-1-haowenchao2@huawei.com> <1eb055e9-6343-260c-de04-c08d8fb24789@huawei.com> From: Bart Van Assche In-Reply-To: <1eb055e9-6343-260c-de04-c08d8fb24789@huawei.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/15/23 07:17, haowenchao (C) wrote: > We can reduce probability of blocking whole host when handle error > commands with this patchset, which is important for servers which > deploy large scale disks. And the new error handler is not enabled > default, so it would not affect drivers which do not need it. Which drivers need this new error handler? I don't see any changes for SCSI drivers in this patch series other than scsi_debug. Has this patch series perhaps been developed for a pass-through driver between virtual machine guests and their host? If so, has it been considered to configure pass-through such that there is one disk per SCSI host instead of multiple? Thanks, Bart.