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 X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D19BC4338F for ; Tue, 27 Jul 2021 03:19:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E66860F11 for ; Tue, 27 Jul 2021 03:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234779AbhG0Cia (ORCPT ); Mon, 26 Jul 2021 22:38:30 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:12309 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234513AbhG0Ci3 (ORCPT ); Mon, 26 Jul 2021 22:38:29 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4GYhj138VWz7yCY; Tue, 27 Jul 2021 11:14:13 +0800 (CST) Received: from dggema773-chm.china.huawei.com (10.1.198.217) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Tue, 27 Jul 2021 11:18:55 +0800 Received: from localhost.huawei.com (10.175.124.27) by dggema773-chm.china.huawei.com (10.1.198.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Tue, 27 Jul 2021 11:18:54 +0800 From: To: , , , CC: , , , , , Subject: [PATCH v2] scsi: Fix the issue that the disk capacity set to zero Date: Tue, 27 Jul 2021 11:44:55 +0800 Message-ID: <20210727034455.1494960-1-lijinlin3@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggema773-chm.china.huawei.com (10.1.198.217) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: lijinlin After add physical volumes to a volume group through vgextend, kernel will rescan partitions, which will read the capacity of the device. If the device status is set to offline through sysfs at this time, read capacity command will return a result which the host byte is DID_NO_CONNECT, the capacity of the device will be set to zero in read_capacity_error(). However, the capacity of the device can't be reread after reset the device status to running, is still zero. Fix this issue by rescan device when the device state changes to SDEV_RUNNING. Signed-off-by: lijinlin Signed-off-by: Wu Bo --- drivers/scsi/scsi_sysfs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 32489d25158f..ae9bfc658203 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -807,11 +807,14 @@ store_state_field(struct device *dev, struct device_attribute *attr, mutex_lock(&sdev->state_mutex); ret = scsi_device_set_state(sdev, state); /* - * If the device state changes to SDEV_RUNNING, we need to run - * the queue to avoid I/O hang. + * If the device state changes to SDEV_RUNNING, we need to + * rescan the device to revalidate it, and run the queue to + * avoid I/O hang. */ - if (ret == 0 && state == SDEV_RUNNING) + if (ret == 0 && state == SDEV_RUNNING) { + scsi_rescan_device(dev); blk_mq_run_hw_queues(sdev->request_queue, true); + } mutex_unlock(&sdev->state_mutex); return ret == 0 ? count : -EINVAL; -- 2.27.0