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  V1.0.9 — 100G PRBS testing, and the job logs actually reach the USB stick Stable

  etwen released this 2026-08-26 15:35:48 +08:00 | 28 commits to main since this release

  ✨ New features

  100G uplink PRBS test

  • New port_prbs_monitor.sh drives a PRBS test on both 100G uplinks: it clears low-power mode, arms the pattern, then polls phy diag <phy> prbs get in the background until stopped. A poll counts as PASS only when the output says PRBS OK!; prbsstat Ber is captured alongside every poll for the record.

  • stop runs prbsstat STOp and prbs clear on each port before rendering the report, so the test does not leave PRBS armed behind it.

  • report gives the tally the bench actually wants:

    PORT           POLLS    PASS     FAIL     RESULT
    Ethernet513    42       42       0        PASS
    Ethernet514    42       40       2        FAIL
    

  • One port at a time is a first-class mode. start a or start b runs a single uplink, which is how you separate a genuine port fault from the DUT not coping with two PRBS streams at once. A port that was not run reports SKIP, not FAIL.

  • Every command and its full output — setup, each poll, teardown — goes to that port's raw log.

  ⚠️ The script ships in this build and can be run by hand, but the calls in Script A, B and C are commented out: PRBS is still under bring-up on this platform.

  USB target detection

  • usb_target.sh reports an inserted USB device's node, mount point or by-id path. It excludes whatever disk backs / and /host — this platform can boot from a USB DOM, which also reports as USB — refuses to guess when several USB disks are present, and when mounting, verifies the result is writable rather than trusting that mount succeeded.
  • Script B builds the USB stress command from the detected node instead of a hard-coded /dev/sda1.

  🐛 Bug fixes

  The job logs were being written to a path nobody collected

  • Stress output, the monitors' logs and the USB archive disagreed about where the job directory lives. Everything now uses /host/hw-eval/jobs/, so what Script B writes is what Script C copies out.

  Script C copied to a USB that was never mounted

  • The archive step assumed /mnt/usb was ready. Script C now finds the device and mounts it first, so a run's logs leave the DUT instead of being written into an empty mount point.

  show interfaces status right after starting PRBS reads as a failure

  • With PRBS armed the link is out of normal operation and reports DOWN. port_prbs_monitor.sh deliberately does not print the port status at start — it appears in the report instead, after prbs clear, labelled as the recovered state.

  📦 Downloads

  File	Contents
  Script_ABC_Blanton_V1.0.9.zip	The full Tera Term working directory, including Blanton_Script/ to copy onto the DUT

  After copying to the DUT:

  chmod +x ~/Blanton_Script/*.sh      # see below
  grep -rlU $'\r' ~/Blanton_Script    # expect no output
  

  mgmt_ping_monitor.sh and port_prbs_monitor.sh launch their workers through bash, so those two run without the execute bit. bmc_monitor.sh and usb_target.sh still need it, and neither git (mode 100644) nor a Windows/USB copy carries it. Without the chmod, start fails with Permission denied and the later cat finds nothing: the section ends up empty and nothing reports an error.

  ⚠️ Before you run

  • Declare the switch population. SWB_UNIT0 / SWB_UNIT1 in config.ttl say which switch units this DUT has; traffic and the readiness gate both follow them.
  • Set FAN_SPEED. It is applied at the start of every run.
  • Management connectivity is in use, not preserved. Both management NICs are up and pinging — drive the run from the serial console.
  • PRBS is not wired into the macros yet. Run port_prbs_monitor.sh by hand if you want it; uncommenting the calls in A/B/C is not supported in this build.
  • Two settings persist to config_db.json and survive a reboot: LLDP is left disabled and the 100G uplinks are left configured. Restore them before the DUT moves on.

  🔗 Links

  • ARCHITECTURE.md — test flow, data models, constraints
  • CLAUDE.md — commands and the bench gotchas

  Full changelog: V1.0.8...V1.0.9

  Downloads

  • Script_ABC_Blanton_V1.0.9.zip
    118 KiB

    2026-08-26 15:36:25 +08:00
  • Source Code (ZIP)
  • Source Code (TAR.GZ)