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scsi: mpt3sas: Prevent error handler escalation when device removed

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If SCSI error handling is taking place for timed out I/Os on a drive and
the corresponding drive is removed, then stop escalating to higher level of
reset by returning the TUR with "I_T NEXUS LOSS OCCURRED" sense key.

Link: https://lore.kernel.org/r/20220816080801.13929-1-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sreekanth Reddy 2022-08-16 13:38:01 +05:30 • committed by Martin K. Petersen
parent 4865821320
commit e75c8ea0d7
1 changed files with 13 additions and 0 deletions
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13
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@ -5156,6 +5156,19 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
/* invalid device handle */ /* invalid device handle */
handle = sas_target_priv_data->handle; handle = sas_target_priv_data->handle;
/*
* Avoid error handling escallation when device is disconnected
*/
if (handle == MPT3SAS_INVALID_DEVICE_HANDLE || sas_device_priv_data->block) {
if (scmd->device->host->shost_state == SHOST_RECOVERY &&
scmd->cmnd[0] == TEST_UNIT_READY) {
scsi_build_sense(scmd, 0, UNIT_ATTENTION, 0x29, 0x07);
scsi_done(scmd);
return 0;
}
}
if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) { if (handle == MPT3SAS_INVALID_DEVICE_HANDLE) {
scmd->result = DID_NO_CONNECT << 16; scmd->result = DID_NO_CONNECT << 16;
scsi_done(scmd); scsi_done(scmd);