tag
6 posts
Operate FreeBSD SCSI tape devices with deliberate rewind modes, filemark-aware positioning, verified backup streams, and controlled media retirement.
Use FreeBSD sesutil to map disks to enclosure elements, signal a verified bay, inspect status, and coordinate hardware replacement safely.
Interpret Linux SCSI timeout and error-handler activity across command retries, device and bus resets, host recovery, and application-visible failures.
Trace a DOS ASPI request from SCSIMGR discovery through its SRB, SCSI CDB, completion status, sense data, and safe buffer lifetime.
Diagnose FreeBSD CAM storage paths from transport and LUN discovery through peripheral drivers, GEOM providers, error sense data, and safe recovery.
How SCSI evolved from a disk-interface proposal into a command-based peripheral standard, separating device behavior from host hardware.