uzbek-plus/logs/b7/b7a/b7a-01-prep-raw.txt
q 8d7721c775 B7: add network time bootstrap and persistent B7C cache
B7A: QMI DMS time vs VNIIFTRI NTP (DMS = UTC - 0.28 s, sigma 1 ms; NITZ = DMS
truncated to 1 s). B7B: a 1970 -> 2026 date -s step is harmless for the modem
stack. B7C: aurora-modem probes DMS/NITZ along the start flow and steps
CLOCK_REALTIME once at the first valid sample (REG registered/attached), never
RTC; background SNTP check (query only) after START OK. 3/3 class-A cold boots
PASS (residual +0.04/+0.36/+0.84 s), cache 14fe453a written (B7C_WRITE_VERIFIED)
and verified by a normal power-on (V1, +0.26 s).

Also publishes the prerequisite R2 (boot-hang / lk eMMC investigation, T4
telnet baseline that B7C builds on) and R3 (autonomous cold boot, NCM loss)
material, and extends tools/publish-sanitize.py to r2/, r3/, b7/.
Binary images, initramfs, busybox and raw logs stay out (see b7/*/SHA256SUMS).
2026-10-02 20:18:25 +03:00

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~ # sha256sum /tmp/b7/bb; chmod 755 /tmp/b7/bb; /tmp/b7/bb ntpd --help 2>&1 | he
ad -12
a6bb1e6e349cbdfa690a78cd0017413c5446bdae02ee003ceb682d4ae1a004ff /tmp/b7/bb
bb: applet not found
~ # for n in 1 2 3; do echo "--- ntp$n"; nslookup ntp$n.vniiftri.ru 10.10.22.3;
done
--- ntp1
Server: 10.10.22.3
Address: 10.10.22.3:53
Non-authoritative answer:
Name: ntp1.vniiftri.ru
Address: 89.109.251.21
Non-authoritative answer:
--- ntp2
Server: 10.10.22.3
Address: 10.10.22.3:53
Non-authoritative answer:
Name: ntp2.vniiftri.ru
Address: 89.109.251.22
Non-authoritative answer:
--- ntp3
Server: 10.10.22.3
Address: 10.10.22.3:53
Non-authoritative answer:
Name: ntp3.vniiftri.ru
Address: 89.109.251.23
Non-authoritative answer:
~ # date +%s.%N; /tmp/b7/bb adjtimex | grep time.tv; ip route; echo B7A1-END
2219.%N
bb: applet not found
1.1.1.1 dev wwan0 scope link src 10.41.212.24
10.10.22.3 dev wwan0 scope link src 10.41.212.24
10.41.212.16/28 dev wwan0 scope link src 10.41.212.24
77.88.8.8 dev wwan0 scope link src 10.41.212.24
172.16.42.0/24 dev usb0 scope link src 172.16.42.1
194.186.191.1 dev wwan0 scope link src 10.41.212.24
B7A1-END
~ #