[Dnsmasq-discuss] tftp not logging and pxe broke

Mon May 9 08:35:50 UTC 2022

short version: I am trying to fix netboot but I don't see dnsmasq-tftp
lines in syslog like ths:

May  1 20:22:28 rpi-cb-1f-f7 dnsmasq-tftp[804]: file
/srv/tftp/613a4524/start.elf not found

I have 3 servers built with ansible:
https://salsa.debian.org/debconf-video-team/ansible/-/tree/master/roles/pxe/tftp-server/files
And then this one extra .conf gets dropped in etc:
https://github.com/CarlFK/pici/blob/main/files/pxe/rpi.conf

I'm pretty sure the relevant lines are:
pxe-service=0,"Raspberry Pi Boot"
enable-tftp
tftp-root=/srv/tftp

x86 machines give me:
PXE-E77: Bad or missing discovery server list.

Raspberry Pi V4:
BMD "e897e1d3/start4.elf" not found
and yet that file does exist under tftp-root

/srv/tftp/e897e1d3/start4.elf: ELF 32-bit LSB executable, Broadcom
VideoCore III, version 1 (SYSV), statically linked, stripped

and none of this activity is showing up in syslog, which is my point
of this post

I hooked a serial terminal up to the pi and got a nicely formatted dump:

[tio 02:37:05] Connected

RPi: BOOTLOADER release VERSION:507b2360 DATE: 2022/04/26 TIME:
11:24:28 BOOTMODE: 0x00000006 part: 0 BUILD_TIMESTAMP=1650968668
0xe897e1d3 0x00c03114 0x0005c986
PM_RSTS: 0x00001000
part 00000000 reset_info 00000000
uSD voltage 3.3V
Initialising SDRAM 'Samsung' 16Gb x2 total-size: 32 Gbit 3200
DDR 3200 1 0 32 152

XHCI-STOP
xHC ver: 256 HCS: 05000420 fc000031 00e70004 HCC: 002841eb
USBSTS 11
xHC ver: 256 HCS: 05000420 fc000031 00e70004 HCC: 002841eb
xHC ports 5 slots 32 intrs 4
Boot mode: NETWORK (02) order f
HDMI0 edid block 0 offset 0
00ffffffffffff0005e37020e80c0000
101d0103802b18782ad205a555539c26
115054bfee00a9c081c0010101010101
010101010101302a40c8608464301850
1300b2ec1000001e000000fd00324c1e
530e000a202020202020000000fc0032
303730570a20202020202020000000ff
004151504b343141303033333034011e
HDMI0 edid block 1 offset 128
02031ef14b901f051404130312021101
230907078301000065030c0010008c0a
d08a20e02d10103e9600b2ec10000018
011d007251d01e206e285500b2ec1000
001e8c0ad08a20e02d10103e9600b2ec
100000188c0ad090204031200c405500
b2ec1000001800000000000000000000
000000000000000000000000000000f5
HDMI0: best-mode 1 (limit 1) 1280x720 60 Hz CEA modes
3e001f80000000000000000000000000
USB2[1] 400202e1 connected
USB2 root HUB port 1 init
DEV [01:00] 2.16 000000:01 class 9 VID 2109 PID 3431
HUB init [01:00] 2.16 000000:01
GENET: RESET_PHY 0
CTL 1140 PHY ID 600d 84a2
MII_CONTROL 1140
MII APD 0001 SCTL3 0001

NET_BOOT: e4:5f:01:64:76:05 wait for link TFTP: 0.0.0.0
LINK STATUS: speed: 100 full duplex
Link ready
GENET START: 64 16 32
GENET: UMAC_START 0xe45f0164 0x76050000
RX: 0 IP: 0 IPV4: 0 MAC: 0 UDP: 0 UDP RECV: 0 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0
DHCP src: 00:25:90:22:c4:91 192.168.3.1
YI_ADDR 192.168.3.236
SI_ADDR 192.168.3.1
OPTIONS:-
op: 53 len:   1 DHCP recv OFFER (2) expect OFFER
op: 54 len:   4 192.168.3.1
op: 51 len:   4
op: 67 len:  19
op: 58 len:   4
op: 59 len:   4
op:  1 len:   4 255.255.255.0
op: 28 len:   4 192.168.3.255
op: 209 len:  58
op:  3 len:   4 192.168.3.1
op: 60 len:   9
op: 97 len:  17
op: 43 len:  32
PXE op:  6 len:   1
PXE op: 10 len:   4
PXE op:  9 len:  20
00000000  52 61 73 70 62 65 72 72  79 20 50 69 20 42 6f 6f |Raspberry Pi Boo|
00000010  74 ff ff 00                                      |t...            |

NET 192.168.3.236 255.255.255.0 gw 0.0.0.0 tftp 192.168.3.1
ARP 192.168.3.1 00:25:90:22:c4:91
NET 192.168.3.236 255.255.255.0 gw 0.0.0.0 tftp 192.168.3.1
RX: 3 IP: 0 IPV4: 1 MAC: 1 UDP: 1 UDP RECV: 1 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0
TFTP_GET: 00:25:90:22:c4:91 192.168.3.1 e897e1d3/start4.elf

RX: 3 IP: 0 IPV4: 1 MAC: 1 UDP: 1 UDP RECV: 1 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0
DHCP src: 00:25:90:22:c4:91 192.168.3.1
YI_ADDR 192.168.3.236
SI_ADDR 192.168.3.1
OPTIONS:-
op: 53 len:   1 DHCP recv ACK (5) expect ACK
op: 54 len:   4 192.168.3.1
op: 51 len:   4
op: 58 len:   4
op: 59 len:   4
op:  1 len:   4 255.255.255.0
op: 28 len:   4 192.168.3.255
op:  6 len:   4 192.168.3.1
op: 15 len:  10
op: 209 len:  58
op:  3 len:   4 192.168.3.1
ARP TX resp: sender: e4:5f:01:64:76:05 192.168.3.236 target: 192.168.3.1
TFTP: disconnect: timeouts 14
RX: 6 IP: 0 IPV4: 2 MAC: 2 UDP: 2 UDP RECV: 2 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0
BMD "e897e1d3/start4.elf" not found
TFTP_GET: 00:25:90:22:c4:91 192.168.3.1 e897e1d3/start.elf

RX: 6 IP: 0 IPV4: 2 MAC: 2 UDP: 2 UDP RECV: 2 IP_CSUM_ERR: 0 UDP_CSUM_ERR: 0

[tio 02:38:01] Disconnected

-- 
Carl K