Updated lighthouse book & fixed slasher cli tests

book/src/installation-source.md

@@ -1,9 +1,10 @@
 # Installation: Build from Source
 
-Lighthouse builds on Linux, macOS, and Windows (via [WSL][] only).
+Lighthouse builds on Linux, macOS, and Windows (native Windows support in
+BETA, we also support Windows via [WSL][]).
 
-Compilation should be easy. In fact, if you already have Rust installed all you
-need is:
+Compilation should be easy. In fact, if you already have Rust and the build
+dependencies installed, all you need is:
 
 - `git clone https://github.com/sigp/lighthouse.git`
 - `cd lighthouse`
@@ -26,35 +27,45 @@ directory will be the location you cloned Lighthouse to during the installation
 - `git checkout ${VERSION}`
 - `make`
 
+
 ## Detailed Instructions
 
-1. Install Rust and Cargo with [rustup](https://rustup.rs/).
-    - Use the `stable` toolchain (it's the default).
-	- Check the [Troubleshooting](#troubleshooting) section for additional
-		dependencies (e.g., `cmake`).
+1. Install the build dependencies for your platform
+	- Check the [Dependencies](#dependencies) section for additional
+		information.
 1. Clone the Lighthouse repository.
     - Run `$ git clone https://github.com/sigp/lighthouse.git`
     - Change into the newly created directory with `$ cd lighthouse`
 1. Build Lighthouse with `$ make`.
-1. Installation was successful if `$ lighthouse --help` displays the
-   command-line documentation.
+1. The build was successful if the `lighthouse` binary exists in the `target/release` directory and `$ ./target/release/lighthouse --help` displays the command-line documentation.
 
 > First time compilation may take several minutes. If you experience any
 > failures, please reach out on [discord](https://discord.gg/cyAszAh) or
 > [create an issue](https://github.com/sigp/lighthouse/issues/new).
 
-## Windows Support
 
-Compiling or running Lighthouse natively on Windows is not currently supported. However,
-Lighthouse can run successfully under the [Windows Subsystem for Linux (WSL)][WSL]. If using
-Ubuntu under WSL, you can should install the Ubuntu dependencies listed in the [Dependencies
-(Ubuntu)](#dependencies-ubuntu) section.
+## Dependencies
 
-[WSL]: https://docs.microsoft.com/en-us/windows/wsl/about
+#### Installing Rust
 
-## Troubleshooting
+The best way to install Rust (regardless of platform) is usually with [rustup](https://rustup.rs/)
+- Use the `stable` toolchain (it's the default).
+
+#### Windows Support
+
+These instructions are for compiling or running Lighthouse natively on Windows, which is currently in
+BETA testing. Lighthouse can also run successfully under the [Windows Subsystem for Linux (WSL)][WSL].
+If using Ubuntu under WSL, you should follow the instructions for Ubuntu listed in the
+[Dependencies (Ubuntu)](#ubuntu) section.
 
-### Dependencies
+[WSL]: https://docs.microsoft.com/en-us/windows/wsl/about
+
+1. Install [Git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git)
+1. Install [Chocolatey](https://chocolatey.org/install) Package Manager for Windows
+    - Install `make` via `choco install make`
+    - Install `cmake` via `choco install cmake --installargs 'ADD_CMAKE_TO_PATH=System'`
+1. Note that in Windows, the lighthouse binary will exist at `.\target\release\lighthouse.exe` when
+     built successfully.
 
 #### Ubuntu
 
@@ -71,6 +82,9 @@ You will need `cmake`. You can install via homebrew:
 
     brew install cmake
 
+
+## Troubleshooting
+
 ### Command is not found
 
 Lighthouse will be installed to `CARGO_HOME` or `$HOME/.cargo`. This directory

book/src/slasher.md

@@ -12,6 +12,7 @@ of the immaturity of the slasher UX and the extra resources required.
 * Quad-core CPU
 * 16 GB RAM
 * 256 GB solid state storage (in addition to space for the beacon node DB)
+- ⚠️ **If you are running natively on Windows**: LMDB will pre-allocate the entire 256 GB for the slasher database
 
 ## How to Run
 

lighthouse/tests/beacon_node.rs

@@ -681,6 +681,7 @@ fn compact_db_flag() {
 fn slasher_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
+        .flag("slasher-max-db-size", Some("16"))
         .run()
         .with_config_and_dir(|config, dir| {
             if let Some(slasher_config) = &config.slasher {
@@ -699,6 +700,7 @@ fn slasher_dir_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
         .flag("slasher-dir", dir.path().as_os_str().to_str())
+        .flag("slasher-max-db-size", Some("16"))
         .run()
         .with_config(|config| {
             if let Some(slasher_config) = &config.slasher {
@@ -712,6 +714,7 @@ fn slasher_dir_flag() {
 fn slasher_update_period_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
+        .flag("slasher-max-db-size", Some("16"))
         .flag("slasher-update-period", Some("100"))
         .run()
         .with_config(|config| {
@@ -726,6 +729,7 @@ fn slasher_update_period_flag() {
 fn slasher_history_length_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
+        .flag("slasher-max-db-size", Some("16"))
         .flag("slasher-history-length", Some("2048"))
         .run()
         .with_config(|config| {
@@ -755,6 +759,7 @@ fn slasher_chunk_size_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
         .flag("slasher-chunk-size", Some("32"))
+        .flag("slasher-max-db-size", Some("16"))
         .run()
         .with_config(|config| {
             let slasher_config = config
@@ -768,6 +773,7 @@ fn slasher_chunk_size_flag() {
 fn slasher_validator_chunk_size_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
+        .flag("slasher-max-db-size", Some("16"))
         .flag("slasher-validator-chunk-size", Some("512"))
         .run()
         .with_config(|config| {
@@ -783,6 +789,7 @@ fn slasher_broadcast_flag() {
     CommandLineTest::new()
         .flag("slasher", None)
         .flag("slasher-broadcast", None)
+        .flag("slasher-max-db-size", Some("16"))
         .run()
         .with_config(|config| {
             let slasher_config = config