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gerrit-dev.monogon.dev / monogon / fab7d46b81250f0b3dab0a588f414b2eb4ac6fc4
commitfab7d46b81250f0b3dab0a588f414b2eb4ac6fc4[log] [tgz]
authorLorenz Brun <lorenz@monogon.tech>Mon Jul 18 20:15:25 2022 +0000
committerLorenz Brun <lorenz@monogon.tech>Mon Jul 25 10:37:46 2022 +0000
treeeeb9de8c3769f830fdb138b53a39911a97e4e18b
parent8234c16354a5723aafab7ab24f0b833dc00c926d [diff]
m/n/c/l/crypt: improve zeroing speed

This improves zeroing speed by a lot by mapping the integrity device
without journal for zeroing. This halves IOPS requirements as well as
making IO mostly sequential (instead of random with the journal).
This also bumps the write block size to 256 times the block size which
experimentally seems to reliably fill up the write queue while not being
too big.
Asynchronous IO (io_uring) doesn't perform better here, at least on not
disks which aren't insanely fast.

Change-Id: Ia8fbed35cd0c8978209fa24dc7615bc71ff1ba2f
Reviewed-on: https://review.monogon.dev/c/monogon/+/840
Tested-by: Jenkins CI
Reviewed-by: Leopold Schabel <leo@monogon.tech>
1 file changed
tree: eeb9de8c3769f830fdb138b53a39911a97e4e18b
  1. .github/
  2. build/
  3. intellij/
  4. metropolis/
  5. scripts/
  6. third_party/
  7. .bazelignore
  8. .bazelproject
  9. .bazelrc
  10. .git-ignore-revs
  11. .gitignore
  12. BUILD
  13. CODING_STANDARDS.md
  14. go.mod
  15. go.sum
  16. LICENSE
  17. README.md
  18. WORKSPACE
README.md

Monogon Monorepo

This is the main repository containing the source code for the Monogon Project.

This is pre-release software - feel free to look around, and check back later for our first release!

Environment

Our build environment requires a working Podman binary (your distribution should have one).

Usage

Spinning up: scripts/create_container.sh

Spinning down: scripts/destroy_container.sh

Running commands: scripts/run_in_container.sh <...>

Using bazel using a wrapper script: scripts/bin/bazel <...> (add to your local $PATH for convenience)

IntelliJ

This repository is compatible with the IntelliJ Bazel plugin, which enables full autocompletion for external dependencies and generated code. All commands run inside the container, and necessary paths are mapped into the container.

The following steps are necessary:

  • Install Google's Bazel plugin in IntelliJ. On IntelliJ 2020.3 or later, you need to install a beta release of the plugin.

  • Add the absolute path to your ~/.cache/bazel-monogon folder to your idea64.vmoptions (Help → Edit Custom VM Options) and restart IntelliJ:

    -Dbazel.bep.path=/home/leopold/.cache/bazel-monogon

  • Set "Bazel Binary Location" in Other Settings → Bazel Settings to the absolute path of scripts/bin/bazel. This is a wrapper that will execute Bazel inside the container.

  • Use File → Import Bazel project... to create a new project from .bazelproject.

After running the first sync, everything should now resolve in the IDE, including generated code.

Metropolis

Run a single node cluster

Launch the node:

scripts/bin/bazel run //:launch -c dbg

Run a kubectl command:

scripts/bin/bazel run //metropolis/cli/dbg -c dbg -- kubectl describe

Run tests:

scripts/bin/bazel test -c dbg //...