chore(tvix/tests): rename to //tvix/boot
This is mostly boot tooling, the integration test is just one instance making use of it. Expose initrd, kernel and runVM as a separate target to CI, and move the tests to a subdirectory. Change-Id: I1d22cd68bf5af095bc11dd9d7117b62956c7f7f2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9465 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
This commit is contained in:
Florian Klink
clbot
parent
242949ecfb
commit
1b3d6975ed
4 changed files with 44 additions and 41 deletions
136
tvix/boot/README.md
Normal file
136
tvix/boot/README.md
Normal file
|
|
@ -0,0 +1,136 @@
|
|||
# tvix/boot
|
||||
|
||||
This directory provides tooling to boot VMs with /nix/store provided by
|
||||
virtiofs.
|
||||
|
||||
In the `tests/` subdirectory, there's some integration tests.
|
||||
|
||||
## //tvix/tests:runVM
|
||||
A script spinning up a `tvix-store virtiofs` daemon, then starting a cloud-
|
||||
hypervisor VM.
|
||||
|
||||
The cloud-hypervisor VM is using a (semi-)minimal kernel image with virtiofs
|
||||
support, and a custom initrd (using u-root). It supports various command line
|
||||
options, to be able to do VM tests, act as an interactive shell or exec a binary
|
||||
from a closure.
|
||||
|
||||
It supports the following env vars:
|
||||
- `CH_NUM_CPUS=1` controls the number of CPUs available to the VM
|
||||
- `CH_MEM_SIZE=512M` controls the memory availabe to the VM
|
||||
- `CH_CMDLINE=` controls the kernel cmdline (which can be used to control the
|
||||
boot)
|
||||
|
||||
### Usage
|
||||
First, ensure you have `tvix-store` in `$PATH`, as that's what `run-tvix-vm`
|
||||
expects:
|
||||
|
||||
Assuming you ran `cargo build --profile=release-with-debug` before, and are in
|
||||
the `tvix` directory:
|
||||
|
||||
```
|
||||
export PATH=$PATH:$PWD/target/release-with-debug
|
||||
```
|
||||
|
||||
Secondly, configure tvix to use the local backend:
|
||||
|
||||
```
|
||||
export BLOB_SERVICE_ADDR=sled://$PWD/blobs.sled
|
||||
export DIRECTORY_SERVICE_ADDR=sled://$PWD/directories.sled
|
||||
export PATH_INFO_SERVICE_ADDR=sled://$PWD/pathinfo.sled
|
||||
```
|
||||
|
||||
Potentially copy some data into tvix-store (via nar-bridge):
|
||||
|
||||
```
|
||||
mg run //tvix:store -- daemon &
|
||||
mg run //tvix:nar-bridge -- &
|
||||
rm -Rf ~/.cache/nix; nix copy --to http://localhost:9000\?compression\=none $(mg build //third_party/nixpkgs:hello)
|
||||
pkill nar-bridge; pkill tvix-store
|
||||
```
|
||||
|
||||
#### Interactive shell
|
||||
Run the VM like this:
|
||||
|
||||
```
|
||||
CH_CMDLINE=tvix.shell mg run //tvix/tests:runVM --
|
||||
```
|
||||
|
||||
You'll get dropped into an interactive shell, from which you can do things with
|
||||
the store:
|
||||
|
||||
```
|
||||
______ _ ____ _ __
|
||||
/_ __/ __(_) __ / _/___ (_) /_
|
||||
/ / | | / / / |/_/ / // __ \/ / __/
|
||||
/ / | |/ / /> < _/ // / / / / /_
|
||||
/_/ |___/_/_/|_| /___/_/ /_/_/\__/
|
||||
|
||||
/# ls -la /nix/store/
|
||||
dr-xr-xr-x root 0 0 Jan 1 00:00 .
|
||||
dr-xr-xr-x root 0 989 Jan 1 00:00 aw2fw9ag10wr9pf0qk4nk5sxi0q0bn56-glibc-2.37-8
|
||||
dr-xr-xr-x root 0 3 Jan 1 00:00 jbwb8d8l28lg9z0xzl784wyb9vlbwss6-xgcc-12.3.0-libgcc
|
||||
dr-xr-xr-x root 0 82 Jan 1 00:00 k8ivghpggjrq1n49xp8sj116i4sh8lia-libidn2-2.3.4
|
||||
dr-xr-xr-x root 0 141 Jan 1 00:00 mdi7lvrn2mx7rfzv3fdq3v5yw8swiks6-hello-2.12.1
|
||||
dr-xr-xr-x root 0 5 Jan 1 00:00 s2gi8pfjszy6rq3ydx0z1vwbbskw994i-libunistring-1.1
|
||||
```
|
||||
|
||||
Once you exit the shell, the VM will power off itself.
|
||||
|
||||
#### Execute a specific binary
|
||||
Run the VM like this:
|
||||
|
||||
```
|
||||
hello_cmd=$(mg build //third_party/nixpkgs:hello)/bin/hello
|
||||
CH_CMDLINE=tvix.run=$hello_cmd mg run //tvix/tests:runVM --
|
||||
```
|
||||
|
||||
Observe it executing the file (and closure) from the tvix-store:
|
||||
|
||||
```
|
||||
[ 0.277486] Run /init as init process
|
||||
______ _ ____ _ __
|
||||
/_ __/ __(_) __ / _/___ (_) /_
|
||||
/ / | | / / / |/_/ / // __ \/ / __/
|
||||
/ / | |/ / /> < _/ // / / / / /_
|
||||
/_/ |___/_/_/|_| /___/_/ /_/_/\__/
|
||||
|
||||
Hello, world!
|
||||
2023/09/24 21:10:19 Nothing left to be done, powering off.
|
||||
[ 0.299122] ACPI: PM: Preparing to enter system sleep state S5
|
||||
[ 0.299422] reboot: Power down
|
||||
```
|
||||
|
||||
#### Execute a NixOS system closure
|
||||
It's also possible to invoke a system closure. To do this, tvix-init honors the
|
||||
init= cmdline option, and will switch_root to it.
|
||||
|
||||
|
||||
```
|
||||
CH_CMDLINE=init=/nix/store/…-nixos-system-…/init mg run //tvix/tests:runVM --
|
||||
```
|
||||
|
||||
```
|
||||
______ _ ____ _ __
|
||||
/_ __/ __(_) __ / _/___ (_) /_
|
||||
/ / | | / / / |/_/ / // __ \/ / __/
|
||||
/ / | |/ / /> < _/ // / / / / /_
|
||||
/_/ |___/_/_/|_| /___/_/ /_/_/\__/
|
||||
|
||||
2023/09/24 21:16:43 switch_root: moving mounts
|
||||
2023/09/24 21:16:43 switch_root: Skipping "/run" as the dir does not exist
|
||||
2023/09/24 21:16:43 switch_root: Changing directory
|
||||
2023/09/24 21:16:43 switch_root: Moving /
|
||||
2023/09/24 21:16:43 switch_root: Changing root!
|
||||
2023/09/24 21:16:43 switch_root: Deleting old /
|
||||
2023/09/24 21:16:43 switch_root: executing init
|
||||
|
||||
<<< NixOS Stage 2 >>>
|
||||
|
||||
[ 0.322096] booting system configuration /nix/store/g657sdxinpqfcdv0162zmb8vv9b5c4c5-nixos-system-client-23.11.git.82102fc37da
|
||||
running activation script...
|
||||
setting up /etc...
|
||||
starting systemd...
|
||||
[ 0.980740] systemd[1]: systemd 253.6 running in system mode (+PAM +AUDIT -SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY +P11KIT -QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD +BPF_FRAMEWORK -XKBCOMMON +UTMP -SYSVINIT default-hierarchy=unified)
|
||||
```
|
||||
|
||||
This effectively replaces the NixOS Stage 1 entirely.
|
||||
Loading…
Add table
Add a link
Reference in a new issue