Cathy, > When an I/O is returned with an srb_status of SRB_STATUS_INVALID_LUN > which has zero good_bytes it must be assigned an error. Otherwise the > I/O will be continuously requeued and will cause a deadlock in the > case where disks are being hot added and removed. sd_probe_async will > wait forever for its I/O to complete while holding > scsi_sd_probe_domain. > > Also returning the default error of DID_TARGET_FAILURE causes > multipath to not retry the I/O resulting in applications receiving I/O > errors before a failover can occur.
Applied to 4.15/scsi-fixes. Thank you! -- Martin K. Petersen Oracle Linux Engineering
