cproudlock d7ec6a2b5f Blancco: sweep full NIC driver tree into kexec-initrd + verbose init ...

Previous approach listed ~6 specific drivers (e1000e, igb, tg3, bnx2,
bnxt_en, b44) and silenced insmod errors (2>/dev/null). On modern Dell
fleet (Latitude 5330/5440, Pro-series, newer OptiPlex) this missed
igc (Intel I225/I226) entirely, and for the drivers we did include,
dependency modules they need at insmod time (libeth, libie, dca,
i2c-algo-bit, macsec, mii, libphy, ptp, ...) were never bundled.
insmod does not resolve dependencies, so NIC drivers that need
helpers failed to load silently.

playbook/pxe_server_setup.yml (kexec-initrd build):
  - Sweep the whole drivers/net/ethernet tree (~170 drivers, all
    vendors, ~15 MB total). Drivers for hardware not present skip
    without binding.
  - Add common helper dirs: drivers/net/{phy,mdio}, drivers/i2c/algos,
    drivers/dca, drivers/ptp, net/macsec, drivers/ssb.
  - overlay.ko kept.

playbook/blancco-init.sh:
  - Load helpers BEFORE main NIC drivers (libeth/libie, dca,
    i2c-algo-bit, macsec, mii, ssb, libphy, mdio*, phy*, ptp*),
    then iterate remaining modules.
  - Remove 2>/dev/null on insmod so actual failures surface on the
    boot console.
  - Print kernel version + /sys/class/net before/after driver load,
    plus dmesg grep for NIC driver activity.
  - On "no interface found" failure, dump dmesg tail and drop to a
    busybox shell for manual debug rather than just hanging.

Separate from this commit but related: kexec-initrd.img on both PXE
servers (.1 and .2) was rebuilt inline with these changes. Pre-rebuild
binary kept as kexec-initrd.img.bak-<timestamp>.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-22 13:29:35 -04:00

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