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57dc364e-b4d7-4e9a-fb31-08dbe69d6973 X-MS-Exchange-CrossTenant-AuthSource: DM6PR10MB4313.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Nov 2023 12:13:15.8695 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: WdisSZ/nRC9v1m+r8lQdexl+n5dhXsbSEfsgy11M/d7aK3dICly5KdH8QCf3cN8VqpCMiI8OdmDdAbYoCVnG6Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB5150 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-16_09,2023-11-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 bulkscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 adultscore=0 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311160098 X-Proofpoint-GUID: NgHlQ1XnJFwvv6cUiAmlJuB_m1e18A3T X-Proofpoint-ORIG-GUID: NgHlQ1XnJFwvv6cUiAmlJuB_m1e18A3T Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On 14/11/2023 01:37, Mike Christie wrote: Hi Mike, > This simplifies sd_spinup_disk so scsi-ml retries errors for it. Note that > we retried specifically on a UA and also if scsi_status_is_good returned > failed which would happen for all check conditions. In this patch we use > SCMD_FAILURE_STAT_ANY which will trigger for the same conditions as > when scsi_status_is_good returns false and there is status. This will > cover all CCs including UAs so there is no explicit failures arrary entry /s/arrary/array/ > for UAs. But the first failure_defs member is for UNIT_ATTENTION, below, right? Thanks, John > > There is one behavior change where we no longer retry when > scsi_execute_cmd returns < 0, but we should be ok. We don't need to retry > for failures like the queue being removed, and for the case where there > are no tags/reqs the block layer waits/retries for us. For possible memory > allocation failures from blk_rq_map_kern we use GFP_NOIO, so retrying > will probably not help. > > We do not handle the outside loop's retries because we want to sleep > between tries and we don't support that yet. > > Signed-off-by: Mike Christie > --- > drivers/scsi/sd.c | 77 +++++++++++++++++++++++++++-------------------- > 1 file changed, 45 insertions(+), 32 deletions(-) > > diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c > index 641f9c9c0674..cda0d029ab7f 100644 > --- a/drivers/scsi/sd.c > +++ b/drivers/scsi/sd.c > @@ -2235,55 +2235,68 @@ static int sd_done(struct scsi_cmnd *SCpnt) > static void > sd_spinup_disk(struct scsi_disk *sdkp) > { > - unsigned char cmd[10]; > + static const u8 cmd[10] = { TEST_UNIT_READY }; > unsigned long spintime_expire = 0; > - int retries, spintime; > + int spintime, sense_valid = 0; > unsigned int the_result; > struct scsi_sense_hdr sshdr; > + struct scsi_failure failure_defs[] = { > + /* Do not retry Medium Not Present */ > + { > + .sense = UNIT_ATTENTION, > + .asc = 0x3A, > + .ascq = SCMD_FAILURE_ASCQ_ANY, > + .result = SAM_STAT_CHECK_CONDITION, > + }, > + { > + .sense = NOT_READY, > + .asc = 0x3A, > + .ascq = SCMD_FAILURE_ASCQ_ANY, > + .result = SAM_STAT_CHECK_CONDITION, > + }, > + /* Retry when scsi_status_is_good would return false 3 times */ > + { > + .result = SCMD_FAILURE_STAT_ANY, > + .allowed = 3, > + }, > + {}