832KB available, 140KB free on Archer C6 (OpenWrt 24.10.0)

Installing and Using OpenWrt
1

I did a Luci sysupgrade on my EU/RU Archer C6 using the official .bin with zero custom changes. The only box I checked before the upgrade is the one on logging the list of installed packages. After the upgrade, I ended up with only 140KB free, which leaves no room for two extra packages I had on OpenWrt 23. Is this normal? If not, what could I try to address it?

Filesystem                Size      Used Available Use% Mounted on
/dev/root                 4.5M      4.5M         0 100% /rom
tmpfs                    59.2M    244.0K     58.9M   0% /tmp
/dev/mtdblock5          832.0K    692.0K    140.0K  83% /overlay
overlayfs:/overlay      832.0K    692.0K    140.0K  83% /
tmpfs                   512.0K         0    512.0K   0% /dev
2

Download package list and sysupgrade again. should be 200-300kB in default config, not 700
One easy space saver is substitute wpad-xxx to hostapd-xxx or wpa-supplicant-xxx , ie if you need wifi client or access point.
Probably add luci-app-attendedsysupgrade to avoid mistake of installing packages with no space.

3

Yeah, it was my bad. It's between 200-300 after a sysupgrade. The rest came from attempting to install luci-app-sqm, which couldn't be completed because its dependency, pkg iptables-mod-ipopt needs 920, and there is only 140k available after the rest. How did it work through the prior OpenWrt versions though?

4

Sysupgrade again with clean image.
Try qosmate, it does not need iptables (but keep attendedsysupgrade handy if space grows)

qosmate dependencies in squash qosmate in overlay RE200v4

booo# df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root                 4352      4352         0 100% /rom
tmpfs                    28620      1016     27604   4% /tmp
/dev/mtdblock4            1408       336      1072  24% /overlay
overlayfs:/overlay        1408       336      1072  24% /
tmpfs                      512         0       512   0% /dev
5

After downgrading to 23.05.5, I see that the total space it provides is 1.31 MB, whereas the 832KB of 24.10 is not enough for qosmate with its dependencies either. Searching for a firmware upgrade via attended sysupgrade from 23.05 finds nothing.

6

If you click advanced mode you can add individual packages to squashfs.

7

I went the route of https://firmware-selector.openwrt.org/ and added luci-app-sqm to that. Only 332KB left after flashing, but I can live with it for now. Thanks for the tips!