From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934028AbdKGDkp (ORCPT ); Mon, 6 Nov 2017 22:40:45 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:31958 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933853AbdKGDkk (ORCPT ); Mon, 6 Nov 2017 22:40:40 -0500 To: Long Li Cc: "K . Y . Srinivasan" , Haiyang Zhang , Stephen Hemminger , "James E . J . Bottomley" , "Martin K . Petersen" , devel@linuxdriverproject.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Long Li Subject: Re: [PATCH] storvsc: Avoid excessive host scan on controller change From: "Martin K. Petersen" Organization: Oracle Corporation References: <20171031215808.11629-1-longli@exchange.microsoft.com> Date: Mon, 06 Nov 2017 22:40:14 -0500 In-Reply-To: <20171031215808.11629-1-longli@exchange.microsoft.com> (Long Li's message of "Tue, 31 Oct 2017 14:58:08 -0700") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Long, > When there are multiple disks attached to the same SCSI controller, > the host may send several VSTOR_OPERATION_REMOVE_DEVICE or > VSTOR_OPERATION_ENUMERATE_BUS messages in a row, to indicate there is > a change on the SCSI controller. In response, storvsc rescans the SCSI > host. Applied to 4.15/scsi-queue with some fuzz. Please verify, thanks! -- Martin K. Petersen Oracle Linux Engineering