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Mon, 23 Jan 2023 22:10:57 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::c888:aca:1eb9:ca4f]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::c888:aca:1eb9:ca4f%5]) with mapi id 15.20.6043.016; Mon, 23 Jan 2023 22:10:57 +0000 From: Mike Christie To: bvanassche@acm.org, mwilck@suse.com, hch@lst.de, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, james.bottomley@hansenpartnership.com Cc: Mike Christie Subject: [PATCH v7 05/22] scsi: retry INQUIRY after timeout Date: Mon, 23 Jan 2023 16:10:29 -0600 Message-Id: <20230123221046.125483-6-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230123221046.125483-1-michael.christie@oracle.com> References: <20230123221046.125483-1-michael.christie@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: CH2PR11CA0003.namprd11.prod.outlook.com (2603:10b6:610:54::13) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|CY5PR10MB6167:EE_ X-MS-Office365-Filtering-Correlation-Id: 76370375-d44e-4b97-7e67-08dafd8eb406 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Packet loss in the fabric can cause spurious timeouts during SCSI device probing, causing device probing to fail. This has been observed in FCoE uplink failover tests, for example. This patch fixes the issue by retrying the INQUIRY. Signed-off-by: Mike Christie --- drivers/scsi/scsi_scan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 1831a0c2b54c..b8a526c4f6bf 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -665,6 +665,10 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, .allowed = 3, .result = SAM_STAT_CHECK_CONDITION, }, + { + .allowed = 1, + .result = DID_TIME_OUT << 16, + }, {}, }; const struct scsi_exec_args exec_args = { -- 2.25.1