davygravy / rescue-dg Goto Github PK

would be neat to have basic MTA working on this; may be doable with:

not wolfssl (tiny, but not suitable for msmtp w/o some non-trivial patching) [ https://forum.openwrt.org/t/ssmtp-for-21-02/103260 ]
ca-certificates # how to update ?
libgnutls ?
msmtp
~/.msmtprc ?

docs say that unless disabled at compile time, dropbear will great user w/ cat /etc/motd.

must check this out. would be good to see version at login.

later: works using a symlink from /etc/motd -> /etc/issue, but will have to reformat it with the version release stamp.

rootfs.cfg for creating the UBIFS seems to not make good use of space. Push out to 31MiB.

NOTE: at 32MiB, the UBIFS rootfs would not boot - VFS sync error and kernel panic at boot. vol_size=31MiB gives more than 27MiB in df -h with about 3.8MIB unused.

root@rescue:~$ df -h
Filesystem                Size      Used Available Use% Mounted on
ubi0:rootfs              27.2M     23.4M      3.8M  86% /
devtmpfs                249.6M         0    249.6M   0% /dev
tmpfs                   250.1M         0    250.1M   0% /dev/shm
tmpfs                   250.1M     44.0K    250.0M   0% /tmp
tmpfs                   250.1M     88.0K    250.0M   0% /run
/dev/sda1                 7.4G    192.0M      6.9G   3% /media/usb0

Need to leave a stamp:

• in /etc/issue ?
• in tarball, uImage and rootfs.image filenames

See what OpenWRT & other do.

Error thrown: "scripts/dtc/dtc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc';" u boot

This hit in 2020 and uboot code is now changed to avoid the problem.

We may just turn off uboot build as it is not essential here.

u-boot waits too long if $serverip can't be pinged. This is annoying and a waste of time.

This seems more reasonable on my network:

preboot_nc=setenv nc_ready 0; for pingstat in 1 2; do; sleep 1; if run if_netconsole; then setenv nc_ready 1; fi; done; if test $nc_ready -eq 1; then run start_netconsole; fi

The changes for uboot environment to boot rescue-usb are not sufficient. As shown, the are based on (mistaken) assumptions of default uboot env values. At least usb_init , and usb_boot need to be defined, but avoid colliding with bodhi's values.

refererences:
https://github.com/doozan/uBoot/blob/master/environment/uboot.environment.txt
https://www.dropbox.com/s/4smmw2wr4ugayz9/uboot.2016.05-tld-1.environment.bodhi.tar?file_subpath=%2Fuboot.2016.05-tld-1.environment

Not having ifplugd in the image means that if the device isn't connected at boot time, then the network interface is never raised. Since this is a headless box that is only connected to via network and serial console, it shouldn't be a deal breaker, but it would be better to have it built in.

Not sure if scripts would need to be fidgeted with to get the LED to behave...

These are needed for some routing and netfilter stuff regarding wireguard and tailscale.

udev doesn't seem to add much... maybe mdev would be better.

With space in NAND limited, maybe we could get better performance for less size.