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Tue, 14 Nov 2023 01:38:02 +0000 Received: from CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::449f:4fd9:2d3e]) by CY8PR10MB7243.namprd10.prod.outlook.com ([fe80::449f:4fd9:2d3e%4]) with mapi id 15.20.6977.029; Tue, 14 Nov 2023 01:38:02 +0000 From: Mike Christie To: mwilck@suse.com, john.g.garry@oracle.com, bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, james.bottomley@hansenpartnership.com Cc: Mike Christie Subject: [PATCH v12 08/20] scsi: rdac: Have scsi-ml retry send_mode_select errors Date: Mon, 13 Nov 2023 19:37:38 -0600 Message-Id: <20231114013750.76609-9-michael.christie@oracle.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231114013750.76609-1-michael.christie@oracle.com> References: <20231114013750.76609-1-michael.christie@oracle.com> X-ClientProxiedBy: DM6PR13CA0034.namprd13.prod.outlook.com (2603:10b6:5:bc::47) To CY8PR10MB7243.namprd10.prod.outlook.com (2603:10b6:930:7c::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY8PR10MB7243:EE_|CH2PR10MB4199:EE_ X-MS-Office365-Filtering-Correlation-Id: cbcc9192-48cf-4893-e267-08dbe4b25773 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Signed-off-by: Mike Christie --- drivers/scsi/device_handler/scsi_dh_rdac.c | 84 ++++++++++++---------- 1 file changed, 46 insertions(+), 38 deletions(-) diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c index 1ac2ae17e8be..f8a09e3eba58 100644 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c @@ -485,43 +485,17 @@ static int set_mode_select(struct scsi_device *sdev, struct rdac_dh_data *h) static int mode_select_handle_sense(struct scsi_device *sdev, struct scsi_sense_hdr *sense_hdr) { - int err = SCSI_DH_IO; struct rdac_dh_data *h = sdev->handler_data; if (!scsi_sense_valid(sense_hdr)) - goto done; - - switch (sense_hdr->sense_key) { - case NO_SENSE: - case ABORTED_COMMAND: - case UNIT_ATTENTION: - err = SCSI_DH_RETRY; - break; - case NOT_READY: - if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x01) - /* LUN Not Ready and is in the Process of Becoming - * Ready - */ - err = SCSI_DH_RETRY; - break; - case ILLEGAL_REQUEST: - if (sense_hdr->asc == 0x91 && sense_hdr->ascq == 0x36) - /* - * Command Lock contention - */ - err = SCSI_DH_IMM_RETRY; - break; - default: - break; - } + return SCSI_DH_IO; RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " "MODE_SELECT returned with sense %02x/%02x/%02x", (char *) h->ctlr->array_name, h->ctlr->index, sense_hdr->sense_key, sense_hdr->asc, sense_hdr->ascq); -done: - return err; + return SCSI_DH_IO; } static void send_mode_select(struct work_struct *work) @@ -530,7 +504,7 @@ static void send_mode_select(struct work_struct *work) container_of(work, struct rdac_controller, ms_work); struct scsi_device *sdev = ctlr->ms_sdev; struct rdac_dh_data *h = sdev->handler_data; - int rc, err, retry_cnt = RDAC_RETRY_COUNT; + int rc, err; struct rdac_queue_data *tmp, *qdata; LIST_HEAD(list); unsigned char cdb[MAX_COMMAND_SIZE]; @@ -538,8 +512,49 @@ static void send_mode_select(struct work_struct *work) unsigned int data_size; blk_opf_t opf = REQ_OP_DRV_OUT | REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER; + struct scsi_failure failure_defs[] = { + { + .sense = NO_SENSE, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .result = SAM_STAT_CHECK_CONDITION, + }, + { + .sense = ABORTED_COMMAND, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .result = SAM_STAT_CHECK_CONDITION, + }, + { + .sense = UNIT_ATTENTION, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .result = SAM_STAT_CHECK_CONDITION, + }, + /* LUN Not Ready and is in the Process of Becoming Ready */ + { + .sense = NOT_READY, + .asc = 0x04, + .ascq = 0x01, + .result = SAM_STAT_CHECK_CONDITION, + }, + /* Command Lock contention */ + { + .sense = ILLEGAL_REQUEST, + .asc = 0x91, + .ascq = 0x36, + .allowed = SCMD_FAILURE_NO_LIMIT, + .result = SAM_STAT_CHECK_CONDITION, + }, + {} + }; + struct scsi_failures failures = { + .total_allowed = RDAC_RETRY_COUNT, + .failure_definitions = failure_defs, + }; const struct scsi_exec_args exec_args = { .sshdr = &sshdr, + .failures = &failures, }; spin_lock(&ctlr->ms_lock); @@ -548,15 +563,12 @@ static void send_mode_select(struct work_struct *work) ctlr->ms_sdev = NULL; spin_unlock(&ctlr->ms_lock); - retry: memset(cdb, 0, sizeof(cdb)); data_size = rdac_failover_get(ctlr, &list, cdb); - RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " - "%s MODE_SELECT command", - (char *) h->ctlr->array_name, h->ctlr->index, - (retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying"); + RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, queueing MODE_SELECT command", + (char *)h->ctlr->array_name, h->ctlr->index); rc = scsi_execute_cmd(sdev, cdb, opf, &h->ctlr->mode_select, data_size, RDAC_TIMEOUT * HZ, RDAC_RETRIES, &exec_args); @@ -570,10 +582,6 @@ static void send_mode_select(struct work_struct *work) err = SCSI_DH_IO; } else { err = mode_select_handle_sense(sdev, &sshdr); - if (err == SCSI_DH_RETRY && retry_cnt--) - goto retry; - if (err == SCSI_DH_IMM_RETRY) - goto retry; } list_for_each_entry_safe(qdata, tmp, &list, entry) {