omnia releng
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Daniel Barlow
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1 changed files with 99 additions and 7 deletions
106
THOUGHTS.txt
106
THOUGHTS.txt
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@ -3707,9 +3707,10 @@ Here is scope of work for Turris:
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recovery/install.
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- disk partitioning tools and mkfs stuff
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- kernel with all the filesystems
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- dhcp client for connecting to wired network
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(II) we need insttuctions for building the real system
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(II) we need instructions for building the real system
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and using min-copy-closure to copy and install the system
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configuration of the real one into /mnt
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@ -3742,14 +3743,105 @@ To be any use, the test needs to be end-to-end - as in, rather than
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just checking some files are copied, test that the machine rebooted
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successfully
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Fri Dec 29 18:36:16 GMT 2023
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Our test for liminix-rebuild uses qemu block device and ext4 instead
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of phram because -device loader doesn't seem to survive a reboot.
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And it needs some free space in the ext4 partition inside the
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mbr image so that it can install new stuff. However, the
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filesystem is sized to be near-full.
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If the mbrimage output is to be much use, probably there should be
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some way of telling it how big the disk is. Maybe it should use
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hardware.flash.size?
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UBI also does a bad job of integrating into the hardware.flash hierarchy
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(but ubi is also more complicated as the ubi volumes are "nested" inside
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an MTD partition)
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To move forwards with this test I think I will make it not depend on
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mbrimage for now, but we have to come back to this. Maybe importing
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the mbrimage module provides new hardware.disk = { partitions, size etc}
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config options.
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Sun Dec 31 23:52:04 GMT 2023
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https://developer.ridgerun.com/wiki/index.php/Setting_up_fw_printenv_to_modify_u-boot_environment_variables#Preparing_the_fw_env.config_file
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can we extract the fw_env config data somehow to produce an appropriate
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file for the device?
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the device config needs to specify partition name and offset at minimum,
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possibly also size.
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we can create a service that writes the config based on those values. but
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if we are to be using fw_setenv from the shell, there is no service
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which depends on that service. whatever defines the service also needs
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to add it to system.services so that the recovery system can specify it
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Sat Jan 6 12:30:27 GMT 2024
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How do we min-copy-closure to the device when we don't have anything
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hooked to the LAN port? It's rather easy to break the WAN connection
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when it involves going out to the internet and back
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* Don't want to plug it into the actual lan because it's doing dhcp service
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and that is going to confuse
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* the machine we're copying from is loaclhost
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* we could do some kind of port forwarding thing? maybe a port forward on
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run-border-vm qemu user networking ...
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* static route on loaclhost?
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512 sudo ip netns add test-lan
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514 sudo ip link set dev enp1s0 netns test-lan
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525 sudo ip link add veth-test-lan type veth peer veth1 netns test-lan
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533 sudo ip netns exec test-lan ip link add name br0 type bridge
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536 sudo ip netns exec test-lan ip link set veth1 master br0
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537 sudo ip netns exec test-lan ip link set enp1s0 master br0
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sudo ip netns exec test-lan /nix/store/dh66q9k402pwpmmgc983xwmwb3vvvjbr-busybox-1.36.1/bin/busybox udhcpc -i br0
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then we could add a route to 10.8.0.1/32 with dev veth-test-lan ?
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Sat Jan 6 20:52:45 GMT 2024
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This is all beside the point right now because the _recovery_ system
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does not run all this stuff - it just has a dhcp client on the lan
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interface. We could plug it straight into the switch.
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COPYING /nix/store/dlz86nip271ybaz0cip7bgkbzijk0cr7-make-stuff-mips-unknown-linux-musl TO //persist
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As we already just plugged it into enp1s0 on loaclhost, could we
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do somethin to put it on the lan from there? add it to vbridge0?
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Sun Jan 7 15:30:57 GMT 2024
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/nix/store/gr255qjxijksf9361glsj5lz0cklassx-profile
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Turns out we should have used a working ethernet cable.
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md5sum /persist/activate
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8eb0760c39cdee0b141b15bbafbc94a0 /persist/activate BAD
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6c27b75cbe9f2ce87c1fd1425362108f /persist/activate GOOD
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8eb0760c39cdee0b141b15bbafbc94a0 /persist/activate
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Sun Jan 7 15:31:14 GMT 2024
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OK, so
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# on device
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mount /dev/mmcblk0p1 /mnt
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[ take a snapshot if needed ]
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[ clear out the turrisos files ]
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ls /mnt/@
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# on build
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$ nix-build -I liminix-config=./examples/rotuer.nix --arg device "import ./devices/turris-omnia" -A outputs.systemConfiguration
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$ nix-shell --run "min-copy-closure -r /mnt/@ root@recovery.lan result "
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# on device
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$ mkdir /mnt/@/persist
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$ /mnt/@/nix/store/swf3vn9bzx198c0cwp6naq0glqa9192n-make-stuff-armv7l-unknown-linux-musleabihf/bin/install /mnt/@/
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this fails because it tries to copy from the unprefixed nix
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store. Also probably it should mkdir $prefix/persist. Also it needs to
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create $prefix/boot: it's too late to do that with `activate`
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because u-boot will need it to exist in order to load the initramfs
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that runs activate
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