From patchwork Mon Apr 27 09:35:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 6278951 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5DAF5BF4A6 for ; Mon, 27 Apr 2015 09:35:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9322E201ED for ; Mon, 27 Apr 2015 09:35:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A69CC201E4 for ; Mon, 27 Apr 2015 09:35:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932262AbbD0JfY (ORCPT ); Mon, 27 Apr 2015 05:35:24 -0400 Received: from cantor2.suse.de ([195.135.220.15]:38965 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932122AbbD0JfY (ORCPT ); Mon, 27 Apr 2015 05:35:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 4645BAB1C; Mon, 27 Apr 2015 09:35:23 +0000 (UTC) From: Hannes Reinecke To: James Bottomley Cc: Christoph Hellwig , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH] sd: Fixup capacity for standby ports Date: Mon, 27 Apr 2015 11:35:22 +0200 Message-Id: <1430127322-90474-1-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.8.5.2 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If a target port is in ALUA 'standby' state it does not need to respond to a 'READ CAPACITY' command. So fixup the initialization for these cases. Signed-off-by: Hannes Reinecke --- drivers/scsi/sd.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 7178b05..62065a6 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1992,6 +1992,11 @@ static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp, sshdr.asc == 0x04 && sshdr.ascq == 0x0A) /* ALUA state transition; always retry */ continue; + if (sense_valid && + sshdr.sense_key == NOT_READY && + sshdr.asc == 0x04 && sshdr.ascq == 0x0B) + /* Target port in standy state */ + return 0; } retries--; @@ -2079,6 +2084,11 @@ static int read_capacity_10(struct scsi_disk *sdkp, struct scsi_device *sdp, sshdr.asc == 0x04 && sshdr.ascq == 0x0A) /* ALUA state transition; always retry */ continue; + if (sense_valid && + sshdr.sense_key == NOT_READY && + sshdr.asc == 0x04 && sshdr.ascq == 0x0B) + /* Target port in standy state */ + return 0; } retries--; @@ -2193,6 +2203,8 @@ got_data: sector_size = 512; sd_printk(KERN_NOTICE, sdkp, "Sector size 0 reported, " "assuming 512.\n"); + if (!sdkp->physical_block_size) + sdkp->physical_block_size = sector_size; } if (sector_size != 512 &&