From f251b4721f2c016e3a90d913cb766a57a53a3d30 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Thu, 26 Jan 2023 12:20:12 +0100
Subject: Apply nixfmt to all .nix files; fix devshell and add it to cache

---
 default.nix           |  28 ++--
 flake.nix             |  12 +-
 nix/build_index.nix   | 257 ++++++++++++++++++-------------
 nix/common.nix        |  11 +-
 nix/compile.nix       | 417 ++++++++++++++++++++++++++------------------------
 nix/kaniko.nix        |   3 +-
 nix/manifest-tool.nix |   3 +-
 nix/toolchain.nix     |  38 ++---
 nix/winscp.nix        |  10 +-
 shell.nix             | 303 ++++++++++++++++++------------------
 10 files changed, 556 insertions(+), 526 deletions(-)

diff --git a/default.nix b/default.nix
index 1791b3c6..ecdf6436 100644
--- a/default.nix
+++ b/default.nix
@@ -1,7 +1,4 @@
-{
-  system ? builtins.currentSystem,
-  git_version ? null,
-}:
+{ system ? builtins.currentSystem, git_version ? null, }:
 
 with import ./nix/common.nix;
 
@@ -13,22 +10,21 @@ let
     debug = (compile {
       inherit system target git_version pkgsSrc cargo2nixOverlay;
       release = false;
-    }).workspace.garage {
-      compileMode = "build";
-    };
+    }).workspace.garage { compileMode = "build"; };
 
     release = (compile {
       inherit system target git_version pkgsSrc cargo2nixOverlay;
       release = true;
-    }).workspace.garage {
-      compileMode = "build";
-    };
+    }).workspace.garage { compileMode = "build"; };
   });
 
-  test = (rustPkgs: pkgs.symlinkJoin {
-    name ="garage-tests";
-    paths = builtins.map (key: rustPkgs.workspace.${key} { compileMode = "test"; }) (builtins.attrNames rustPkgs.workspace);
-  });
+  test = (rustPkgs:
+    pkgs.symlinkJoin {
+      name = "garage-tests";
+      paths =
+        builtins.map (key: rustPkgs.workspace.${key} { compileMode = "test"; })
+        (builtins.attrNames rustPkgs.workspace);
+    });
 
 in {
   pkgs = {
@@ -55,8 +51,6 @@ in {
       inherit system git_version pkgsSrc cargo2nixOverlay;
       target = "x86_64-unknown-linux-musl";
       compiler = "clippy";
-    }).workspace.garage {
-      compileMode = "build";
-    };
+    }).workspace.garage { compileMode = "build"; };
   };
 }
diff --git a/flake.nix b/flake.nix
index c1d772bb..7eb9e33b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,9 @@
 {
-  description = "Garage, an S3-compatible distributed object store for self-hosted deployments";
+  description =
+    "Garage, an S3-compatible distributed object store for self-hosted deployments";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/a3073c49bc0163fea6a121c276f526837672b555";
+  inputs.nixpkgs.url =
+    "github:NixOS/nixpkgs/a3073c49bc0163fea6a121c276f526837672b555";
   inputs.cargo2nix = {
     # As of 2022-10-18: two small patches over unstable branch, one for clippy and one to fix feature detection
     url = "github:Alexis211/cargo2nix/a7a61179b66054904ef6a195d8da736eaaa06c36";
@@ -24,13 +26,11 @@
             release = true;
           }).workspace.garage { compileMode = "build"; };
         };
-        devShell = ((compile {
+        devShell = (compile {
           inherit system git_version;
           pkgsSrc = nixpkgs;
           cargo2nixOverlay = cargo2nix.overlays.default;
           release = false;
-        }).workspaceShell {
-          packages = [ pkgs.rustfmt cargo2nix.packages.${system}.default ];
-        });
+        }).workspaceShell { packages = [ pkgs.rustfmt ]; };
       });
 }
diff --git a/nix/build_index.nix b/nix/build_index.nix
index 4625e3ae..7cc4f62c 100644
--- a/nix/build_index.nix
+++ b/nix/build_index.nix
@@ -1,10 +1,8 @@
-{
-  path ? "/../aws-list.txt",
-}:
+{ path ? "/../aws-list.txt", }:
 
 with import ./common.nix;
-let 
-  pkgs = import pkgsSrc {};
+let
+  pkgs = import pkgsSrc { };
   lib = pkgs.lib;
 
   /* Converts a key list and a value list to a set
@@ -13,139 +11,182 @@ let
        listToSet [ "name" "version" ] [ "latex" "3.14" ]
        => { name = "latex"; version = "3.14"; }
   */
-  listToSet = keys: values: 
-    builtins.listToAttrs 
-      (lib.zipListsWith 
-        (a: b: { name = a; value = b; }) 
-        keys
-        values);
+  listToSet = keys: values:
+    builtins.listToAttrs (lib.zipListsWith (a: b: {
+      name = a;
+      value = b;
+    }) keys values);
 
   /* Says if datetime a is more recent than datetime b
 
-    Example:
-      cmpDate { date = "2021-09-10"; time = "22:12:15"; } { date = "2021-02-03"; time = "23:54:12"; }
-      => true
+     Example:
+       cmpDate { date = "2021-09-10"; time = "22:12:15"; } { date = "2021-02-03"; time = "23:54:12"; }
+       => true
   */
-  cmpDate = a: b: 
-    let da = (builtins.head a.builds).date;
-        db = (builtins.head b.builds).date;
-    in 
-      if da == db then  (builtins.head a.builds).time > (builtins.head b.builds).time
-      else da > db;
-
-  /* Pretty platforms */
+  cmpDate = a: b:
+    let
+      da = (builtins.head a.builds).date;
+      db = (builtins.head b.builds).date;
+    in if da == db then
+      (builtins.head a.builds).time > (builtins.head b.builds).time
+    else
+      da > db;
+
+  # Pretty platforms
   prettyPlatform = name:
-    if name == "aarch64-unknown-linux-musl" then "linux/arm64"
-    else if name == "armv6l-unknown-linux-musleabihf" then "linux/arm"
-    else if name == "x86_64-unknown-linux-musl" then "linux/amd64"
-    else if name == "i686-unknown-linux-musl" then "linux/386"
-    else name;
-
-  /* Parsing */
+    if name == "aarch64-unknown-linux-musl" then
+      "linux/arm64"
+    else if name == "armv6l-unknown-linux-musleabihf" then
+      "linux/arm"
+    else if name == "x86_64-unknown-linux-musl" then
+      "linux/amd64"
+    else if name == "i686-unknown-linux-musl" then
+      "linux/386"
+    else
+      name;
+
+  # Parsing
   list = builtins.readFile (./. + path);
   entries = lib.splitString "\n" list;
 
-  elems = builtins.filter 
-    (e: (builtins.length e) == 4) 
-    (map 
-      (x: builtins.filter (e: e != "") (lib.splitString " " x)) 
-      entries);
+  elems = builtins.filter (e: (builtins.length e) == 4)
+    (map (x: builtins.filter (e: e != "") (lib.splitString " " x)) entries);
 
-  keys = ["date" "time" "size" "path"];
+  keys = [ "date" "time" "size" "path" ];
   parsed = map (entry: listToSet keys entry) elems;
 
-  subkeys = ["root" "version" "platform" "binary" ];
-  builds = map (entry: entry // listToSet subkeys (lib.splitString "/" entry.path) // { url = "https://garagehq.deuxfleurs.fr/" + entry.path; }) parsed;
-
-  /* Aggregation */
-  builds_per_version = lib.foldl (acc: v: acc // { ${v.version} = if builtins.hasAttr v.version acc then acc.${v.version} ++ [ v ] else [ v ]; }) {} builds; 
+  subkeys = [ "root" "version" "platform" "binary" ];
+  builds = map (entry:
+    entry // listToSet subkeys (lib.splitString "/" entry.path) // {
+      url = "https://garagehq.deuxfleurs.fr/" + entry.path;
+    }) parsed;
+
+  # Aggregation
+  builds_per_version = lib.foldl (acc: v:
+    acc // {
+      ${v.version} = if builtins.hasAttr v.version acc then
+        acc.${v.version} ++ [ v ]
+      else
+        [ v ];
+    }) { } builds;
 
   versions = builtins.attrNames builds_per_version;
-  versions_release = builtins.filter (x: builtins.match "v[0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?" x != null) versions;
-  versions_commit = builtins.filter (x: builtins.match "[0-9a-f]{40}" x != null) versions;
-  versions_extra = lib.subtractLists (versions_release ++ versions_commit) versions;
+  versions_release = builtins.filter
+    (x: builtins.match "v[0-9]+.[0-9]+.[0-9]+(.[0-9]+)?" x != null) versions;
+  versions_commit =
+    builtins.filter (x: builtins.match "[0-9a-f]{40}" x != null) versions;
+  versions_extra =
+    lib.subtractLists (versions_release ++ versions_commit) versions;
 
   sorted_builds = [
     {
       name = "Release";
       hide = false;
       type = "tag";
-      description = "Release builds are the official builds, they are tailored for productions and are the most tested.";
-      builds =  builtins.sort (a: b: a.version > b.version) (map (x: { version = x; builds = builtins.getAttr x builds_per_version; }) versions_release);
+      description =
+        "Release builds are the official builds, they are tailored for productions and are the most tested.";
+      builds = builtins.sort (a: b: a.version > b.version) (map (x: {
+        version = x;
+        builds = builtins.getAttr x builds_per_version;
+      }) versions_release);
     }
     {
       name = "Extra";
       hide = true;
       type = "tag";
-      description = "Extra builds are built on demand to test a specific feature or a specific need.";
-      builds = builtins.sort cmpDate (map (x: { version = x; builds = builtins.getAttr x builds_per_version; }) versions_extra);
+      description =
+        "Extra builds are built on demand to test a specific feature or a specific need.";
+      builds = builtins.sort cmpDate (map (x: {
+        version = x;
+        builds = builtins.getAttr x builds_per_version;
+      }) versions_extra);
     }
     {
       name = "Development";
       hide = true;
       type = "commit";
-      description = "Development builds are built periodically. Use them if you want to test a specific feature that is not yet released.";
-      builds = builtins.sort cmpDate (map (x: { version = x; builds = builtins.getAttr x builds_per_version; }) versions_commit);
+      description =
+        "Development builds are built periodically. Use them if you want to test a specific feature that is not yet released.";
+      builds = builtins.sort cmpDate (map (x: {
+        version = x;
+        builds = builtins.getAttr x builds_per_version;
+      }) versions_commit);
     }
   ];
 
-  json = pkgs.writeTextDir "share/_releases.json" (builtins.toJSON sorted_builds);
+  json =
+    pkgs.writeTextDir "share/_releases.json" (builtins.toJSON sorted_builds);
   html = pkgs.writeTextDir "share/_releases.html" ''
-<!doctype html>
-<html>
-  <head>
-    <meta charset="utf-8" />
-    <title>Garage releases</title>
-    <style>
-      html, body { margin:0; padding: 0 }
-      body { font-family: 'Helvetica', Sans; }
-      section { margin: 1rem; }
-      ul { padding:0; margin: 0.2rem }
-      li {
-        border-radius: 0.2rem;
-        display: inline; 
-        border: 2px #0b5d83 solid; 
-        padding: 0.5rem; 
-        line-height: 3rem;
-        color: #0b5d83;
-      }
-      li:hover { background-color: #0b5d83; color: #fff; }
-      li a, li a:hover { color: inherit; text-decoration: none }
-    </style>
-  </head>
-  <body>
-   ${ builtins.toString (lib.forEach sorted_builds (r: ''
-    <section>
-      <h2>${r.name} builds</h2>
-
-      <p>${r.description}</p>
-
-      ${if r.hide then "<details><summary>Show ${r.name} builds</summary>" else ""}
-      ${ builtins.toString (lib.forEach r.builds (x: ''
-        <h3> ${x.version} (${(builtins.head x.builds).date}) </h3>
-        <p>See this build on</p>
-        <p> Binaries:
-        <ul>
-        ${ builtins.toString (lib.forEach x.builds (b: ''
-          <li><a href="/${b.path}">${prettyPlatform b.platform}</a></li>
-        ''))}
-        </ul></p>
-        <p> Sources:
-        <ul>
-         <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/src/${r.type}/${x.version}">gitea</a></li>
-         <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/archive/${x.version}.zip">.zip</a></li>
-         <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/archive/${x.version}.tar.gz">.tar.gz</a></li>
-        </ul></p>
-      ''))  }
-      ${ if builtins.length r.builds == 0 then "<em>There is no build for this category</em>" else "" }
-      ${if r.hide then "</details>" else ""}
-    </section>
-  ''))}
-  </body>
-</html>
-'';
-in
-  pkgs.symlinkJoin {
-    name = "releases";
-    paths = [ json html ];
-  }
+    <!doctype html>
+    <html>
+      <head>
+        <meta charset="utf-8" />
+        <title>Garage releases</title>
+        <style>
+          html, body { margin:0; padding: 0 }
+          body { font-family: 'Helvetica', Sans; }
+          section { margin: 1rem; }
+          ul { padding:0; margin: 0.2rem }
+          li {
+            border-radius: 0.2rem;
+            display: inline; 
+            border: 2px #0b5d83 solid; 
+            padding: 0.5rem; 
+            line-height: 3rem;
+            color: #0b5d83;
+          }
+          li:hover { background-color: #0b5d83; color: #fff; }
+          li a, li a:hover { color: inherit; text-decoration: none }
+        </style>
+      </head>
+      <body>
+       ${
+         builtins.toString (lib.forEach sorted_builds (r: ''
+           <section>
+             <h2>${r.name} builds</h2>
+
+             <p>${r.description}</p>
+
+             ${
+               if r.hide then
+                 "<details><summary>Show ${r.name} builds</summary>"
+               else
+                 ""
+             }
+             ${
+               builtins.toString (lib.forEach r.builds (x: ''
+                 <h3> ${x.version} (${(builtins.head x.builds).date}) </h3>
+                 <p>See this build on</p>
+                 <p> Binaries:
+                 <ul>
+                 ${builtins.toString (lib.forEach x.builds (b: ''
+                   <li><a href="/${b.path}">${
+                     prettyPlatform b.platform
+                   }</a></li>
+                 ''))}
+                 </ul></p>
+                 <p> Sources:
+                 <ul>
+                  <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/src/${r.type}/${x.version}">gitea</a></li>
+                  <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/archive/${x.version}.zip">.zip</a></li>
+                  <li><a href="https://git.deuxfleurs.fr/Deuxfleurs/garage/archive/${x.version}.tar.gz">.tar.gz</a></li>
+                 </ul></p>
+               ''))
+             }
+             ${
+               if builtins.length r.builds == 0 then
+                 "<em>There is no build for this category</em>"
+               else
+                 ""
+             }
+             ${if r.hide then "</details>" else ""}
+           </section>
+         ''))
+       }
+      </body>
+    </html>
+  '';
+in pkgs.symlinkJoin {
+  name = "releases";
+  paths = [ json html ];
+}
diff --git a/nix/common.nix b/nix/common.nix
index 90e3afaf..57f354dd 100644
--- a/nix/common.nix
+++ b/nix/common.nix
@@ -1,10 +1,9 @@
 rec {
-  /*
-   * Fixed dependencies
-   */
+  # * Fixed dependencies
   pkgsSrc = fetchTarball {
     # As of 2022-10-13
-    url = "https://github.com/NixOS/nixpkgs/archive/a3073c49bc0163fea6a121c276f526837672b555.zip";
+    url =
+      "https://github.com/NixOS/nixpkgs/archive/a3073c49bc0163fea6a121c276f526837672b555.zip";
     sha256 = "1bz632psfbpmicyzjb8b4265y50shylccvfm6ry6mgnv5hvz324s";
   };
   cargo2nixSrc = fetchGit {
@@ -14,9 +13,7 @@ rec {
     rev = "a7a61179b66054904ef6a195d8da736eaaa06c36";
   };
 
-  /*
-   * Shared objects
-   */
+  # * Shared objects
   cargo2nix = import cargo2nixSrc;
   cargo2nixOverlay = cargo2nix.overlays.default;
 }
diff --git a/nix/compile.nix b/nix/compile.nix
index 3ea5035e..54e920db 100644
--- a/nix/compile.nix
+++ b/nix/compile.nix
@@ -1,227 +1,240 @@
-{
-  system,
-  target ? null,
-  pkgsSrc,
-  cargo2nixOverlay,
-  compiler ? "rustc",
-  release ? false,
-  git_version ? null,
-  features ? null,
-}:
+{ system, target ? null, pkgsSrc, cargo2nixOverlay, compiler ? "rustc"
+, release ? false, git_version ? null, features ? null, }:
 
 let
   log = v: builtins.trace v v;
 
-  pkgs =
-    if target != null then
-      import pkgsSrc {
-        inherit system;
-        crossSystem = {
-          config = target;
-          isStatic = true;
-        };
-        overlays = [ cargo2nixOverlay ];
-      }
-    else
-      import pkgsSrc {
-        inherit system;
-        overlays = [ cargo2nixOverlay ];
+  pkgs = if target != null then
+    import pkgsSrc {
+      inherit system;
+      crossSystem = {
+        config = target;
+        isStatic = true;
       };
+      overlays = [ cargo2nixOverlay ];
+    }
+  else
+    import pkgsSrc {
+      inherit system;
+      overlays = [ cargo2nixOverlay ];
+    };
 
-  /*
-   Cargo2nix is built for rustOverlay which installs Rust from Mozilla releases.
-   This is fine for 64-bit platforms, but for 32-bit platforms, we need our own Rust
-   to avoid incompatibilities with time_t between different versions of musl
-   (>= 1.2.0 shipped by NixOS, < 1.2.0 with which rustc was built), which lead to compilation breakage.
-   So we want a Rust release that is bound to our Nix repository to avoid these problems.
-   See here for more info: https://musl.libc.org/time64.html
-   Because Cargo2nix does not support the Rust environment shipped by NixOS,
-   we emulate the structure of the Rust object created by rustOverlay.
-   In practise, rustOverlay ships rustc+cargo in a single derivation while
-   NixOS ships them in separate ones. We reunite them with symlinkJoin.
+  /* Cargo2nix is built for rustOverlay which installs Rust from Mozilla releases.
+     This is fine for 64-bit platforms, but for 32-bit platforms, we need our own Rust
+     to avoid incompatibilities with time_t between different versions of musl
+     (>= 1.2.0 shipped by NixOS, < 1.2.0 with which rustc was built), which lead to compilation breakage.
+     So we want a Rust release that is bound to our Nix repository to avoid these problems.
+     See here for more info: https://musl.libc.org/time64.html
+     Because Cargo2nix does not support the Rust environment shipped by NixOS,
+     we emulate the structure of the Rust object created by rustOverlay.
+     In practise, rustOverlay ships rustc+cargo in a single derivation while
+     NixOS ships them in separate ones. We reunite them with symlinkJoin.
   */
-  toolchainOptions =
-    if target == null || target == "x86_64-unknown-linux-musl" || target == "aarch64-unknown-linux-musl" then {
-      rustVersion = "1.63.0";
-      extraRustComponents = [ "clippy" ];
-    } else {
-      rustToolchain = pkgs.symlinkJoin {
-        name = "rust-static-toolchain-${target}";
-        paths = [
-          pkgs.rustPlatform.rust.cargo
-          pkgs.rustPlatform.rust.rustc
-          # clippy not needed, it only runs on amd64
-        ];
-      };
+  toolchainOptions = if target == null || target == "x86_64-unknown-linux-musl"
+  || target == "aarch64-unknown-linux-musl" then {
+    rustVersion = "1.63.0";
+    extraRustComponents = [ "clippy" ];
+  } else {
+    rustToolchain = pkgs.symlinkJoin {
+      name = "rust-static-toolchain-${target}";
+      paths = [
+        pkgs.rustPlatform.rust.cargo
+        pkgs.rustPlatform.rust.rustc
+        # clippy not needed, it only runs on amd64
+      ];
     };
+  };
 
+  buildEnv = (drv:
+    {
+      rustc = drv.setBuildEnv;
+      clippy = ''
+        ${drv.setBuildEnv or ""}
+        echo
+        echo --- BUILDING WITH CLIPPY ---
+        echo
+
+        export NIX_RUST_BUILD_FLAGS="''${NIX_RUST_BUILD_FLAGS} --deny warnings"
+        export RUSTC="''${CLIPPY_DRIVER}"
+      '';
+    }.${compiler});
+
+  /* Cargo2nix provides many overrides by default, you can take inspiration from them:
+     https://github.com/cargo2nix/cargo2nix/blob/master/overlay/overrides.nix
+
+     You can have a complete list of the available options by looking at the overriden object, mkcrate:
+     https://github.com/cargo2nix/cargo2nix/blob/master/overlay/mkcrate.nix
+  */
+  packageOverrides = pkgs:
+    pkgs.rustBuilder.overrides.all ++ [
+      /* [1] We add some logic to compile our crates with clippy, it provides us many additional lints
+
+         [2] We need to alter Nix hardening to make static binaries: PIE,
+         Position Independent Executables seems to be supported only on amd64. Having
+         this flag set either 1. make our executables crash or 2. compile as dynamic on some platforms.
+         Here, we deactivate it. Later (find `codegenOpts`), we reactivate it for supported targets
+         (only amd64 curently) through the `-static-pie` flag.
+         PIE is a feature used by ASLR, which helps mitigate security issues.
+         Learn more about Nix Hardening at: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/cc-wrapper/add-hardening.sh
+
+         [3] We want to inject the git version while keeping the build deterministic.
+         As we do not want to consider the .git folder as part of the input source,
+         we ask the user (the CI often) to pass the value to Nix.
+
+         [4] We don't want libsodium-sys and zstd-sys to try to use pkgconfig to build against a system library.
+         However the features to do so get activated for some reason (due to a bug in cargo2nix?),
+         so disable them manually here.
+      */
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage";
+        overrideAttrs = drv:
+          (if git_version != null then {
+            # [3]
+            preConfigure = ''
+              ${drv.preConfigure or ""}
+              export GIT_VERSION="${git_version}"
+            '';
+          } else
+            { }) // {
+              # [1]
+              setBuildEnv = (buildEnv drv);
+              # [2]
+              hardeningDisable = [ "pie" ];
+            };
+      })
+
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_rpc";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
-  buildEnv = (drv: {
-    rustc = drv.setBuildEnv;
-    clippy = ''
-      ${drv.setBuildEnv or "" }
-      echo
-      echo --- BUILDING WITH CLIPPY ---
-      echo
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_db";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
-      export NIX_RUST_BUILD_FLAGS="''${NIX_RUST_BUILD_FLAGS} --deny warnings"
-      export RUSTC="''${CLIPPY_DRIVER}"
-    '';
-  }.${compiler});
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_util";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
-  /*
-   Cargo2nix provides many overrides by default, you can take inspiration from them:
-   https://github.com/cargo2nix/cargo2nix/blob/master/overlay/overrides.nix
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_table";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
-   You can have a complete list of the available options by looking at the overriden object, mkcrate:
-   https://github.com/cargo2nix/cargo2nix/blob/master/overlay/mkcrate.nix
-  */
-  packageOverrides = pkgs: pkgs.rustBuilder.overrides.all ++ [
-    /*
-     [1] We add some logic to compile our crates with clippy, it provides us many additional lints
-
-     [2] We need to alter Nix hardening to make static binaries: PIE,
-     Position Independent Executables seems to be supported only on amd64. Having
-     this flag set either 1. make our executables crash or 2. compile as dynamic on some platforms.
-     Here, we deactivate it. Later (find `codegenOpts`), we reactivate it for supported targets
-     (only amd64 curently) through the `-static-pie` flag.
-     PIE is a feature used by ASLR, which helps mitigate security issues.
-     Learn more about Nix Hardening at: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/cc-wrapper/add-hardening.sh
-
-     [3] We want to inject the git version while keeping the build deterministic.
-     As we do not want to consider the .git folder as part of the input source,
-     we ask the user (the CI often) to pass the value to Nix.
-
-     [4] We don't want libsodium-sys and zstd-sys to try to use pkgconfig to build against a system library.
-     However the features to do so get activated for some reason (due to a bug in cargo2nix?),
-     so disable them manually here.
-    */
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage";
-      overrideAttrs = drv:
-        (if git_version != null then {
-          /* [3] */ preConfigure = ''
-            ${drv.preConfigure or ""}
-            export GIT_VERSION="${git_version}"
-          '';
-        } else {})
-        //
-      {
-        /* [1] */ setBuildEnv = (buildEnv drv);
-        /* [2] */ hardeningDisable = [ "pie" ];
-      };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_rpc";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_db";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_util";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_table";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_block";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_model";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_api";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "garage_web";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "k2v-client";
-      overrideAttrs = drv: { /* [1] */ setBuildEnv = (buildEnv drv); };
-    })
-
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "libsodium-sys";
-      overrideArgs = old: {
-        features = [ ]; /* [4] */
-      };
-    })
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_block";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
-    (pkgs.rustBuilder.rustLib.makeOverride {
-      name = "zstd-sys";
-      overrideArgs = old: {
-        features = [ ]; /* [4] */
-      };
-    })
-  ];
-
-  /*
-    We ship some parts of the code disabled by default by putting them behind a flag.
-    It speeds up the compilation (when the feature is not required) and released crates have less dependency by default (less attack surface, disk space, etc.).
-    But we want to ship these additional features when we release Garage.
-    In the end, we chose to exclude all features from debug builds while putting (all of) them in the release builds.
-  */
-  rootFeatures = if features != null then features else
-     ([
-       "garage/bundled-libs"
-       "garage/sled"
-       "garage/k2v"
-     ] ++ (if release then [
-       "garage/consul-discovery"
-       "garage/kubernetes-discovery"
-       "garage/metrics"
-       "garage/telemetry-otlp"
-       "garage/lmdb"
-       "garage/sqlite"
-     ] else []));
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_model";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
+
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_api";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
+
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "garage_web";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
+
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "k2v-client";
+        overrideAttrs = drv: { # [1]
+          setBuildEnv = (buildEnv drv);
+        };
+      })
 
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "libsodium-sys";
+        overrideArgs = old: {
+          features = [ ]; # [4]
+        };
+      })
+
+      (pkgs.rustBuilder.rustLib.makeOverride {
+        name = "zstd-sys";
+        overrideArgs = old: {
+          features = [ ]; # [4]
+        };
+      })
+    ];
+
+  /* We ship some parts of the code disabled by default by putting them behind a flag.
+     It speeds up the compilation (when the feature is not required) and released crates have less dependency by default (less attack surface, disk space, etc.).
+     But we want to ship these additional features when we release Garage.
+     In the end, we chose to exclude all features from debug builds while putting (all of) them in the release builds.
+  */
+  rootFeatures = if features != null then
+    features
+  else
+    ([ "garage/bundled-libs" "garage/sled" "garage/k2v" ] ++ (if release then [
+      "garage/consul-discovery"
+      "garage/kubernetes-discovery"
+      "garage/metrics"
+      "garage/telemetry-otlp"
+      "garage/lmdb"
+      "garage/sqlite"
+    ] else
+      [ ]));
 
   packageFun = import ../Cargo.nix;
 
-  /*
-    We compile fully static binaries with musl to simplify deployment on most systems.
-    When possible, we reactivate PIE hardening (see above).
+  /* We compile fully static binaries with musl to simplify deployment on most systems.
+     When possible, we reactivate PIE hardening (see above).
 
-    Also, if you set the RUSTFLAGS environment variable, the following parameters will
-    be ignored.
+     Also, if you set the RUSTFLAGS environment variable, the following parameters will
+     be ignored.
 
-    For more information on static builds, please refer to Rust's RFC 1721.
-    https://rust-lang.github.io/rfcs/1721-crt-static.html#specifying-dynamicstatic-c-runtime-linkage
+     For more information on static builds, please refer to Rust's RFC 1721.
+     https://rust-lang.github.io/rfcs/1721-crt-static.html#specifying-dynamicstatic-c-runtime-linkage
   */
 
   codegenOpts = {
-   "armv6l-unknown-linux-musleabihf" = [ "target-feature=+crt-static" "link-arg=-static" ]; /* compile as dynamic with static-pie */
-   "aarch64-unknown-linux-musl" = [ "target-feature=+crt-static" "link-arg=-static" ]; /* segfault with static-pie */
-   "i686-unknown-linux-musl" = [ "target-feature=+crt-static" "link-arg=-static" ]; /* segfault with static-pie */
-   "x86_64-unknown-linux-musl" = [ "target-feature=+crt-static" "link-arg=-static-pie" ];
+    "armv6l-unknown-linux-musleabihf" = [
+      "target-feature=+crt-static"
+      "link-arg=-static"
+    ]; # compile as dynamic with static-pie
+    "aarch64-unknown-linux-musl" = [
+      "target-feature=+crt-static"
+      "link-arg=-static"
+    ]; # segfault with static-pie
+    "i686-unknown-linux-musl" = [
+      "target-feature=+crt-static"
+      "link-arg=-static"
+    ]; # segfault with static-pie
+    "x86_64-unknown-linux-musl" =
+      [ "target-feature=+crt-static" "link-arg=-static-pie" ];
   };
 
-  /*
-    NixOS and Rust/Cargo triples do not match for ARM, fix it here.
-  */
-  rustTarget = if target == "armv6l-unknown-linux-musleabihf"
-    then "arm-unknown-linux-musleabihf"
-    else target;
-
-in
-  pkgs.rustBuilder.makePackageSet ({
-    inherit release packageFun packageOverrides codegenOpts rootFeatures;
-    target = rustTarget;
-  } // toolchainOptions)
+  # NixOS and Rust/Cargo triples do not match for ARM, fix it here.
+  rustTarget = if target == "armv6l-unknown-linux-musleabihf" then
+    "arm-unknown-linux-musleabihf"
+  else
+    target;
+
+in pkgs.rustBuilder.makePackageSet ({
+  inherit release packageFun packageOverrides codegenOpts rootFeatures;
+  target = rustTarget;
+} // toolchainOptions)
diff --git a/nix/kaniko.nix b/nix/kaniko.nix
index 140328b8..64cadd14 100644
--- a/nix/kaniko.nix
+++ b/nix/kaniko.nix
@@ -15,7 +15,8 @@ pkgs.buildGoModule rec {
   checkPhase = "true";
 
   meta = with pkgs.lib; {
-    description = "kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster.";
+    description =
+      "kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster.";
     homepage = "https://github.com/GoogleContainerTools/kaniko";
     license = licenses.asl20;
     platforms = platforms.linux;
diff --git a/nix/manifest-tool.nix b/nix/manifest-tool.nix
index 182ccc0e..1090a6ef 100644
--- a/nix/manifest-tool.nix
+++ b/nix/manifest-tool.nix
@@ -15,7 +15,8 @@ pkgs.buildGoModule rec {
   checkPhase = "true";
 
   meta = with pkgs.lib; {
-    description = "Command line tool to create and query container image manifest list/indexes";
+    description =
+      "Command line tool to create and query container image manifest list/indexes";
     homepage = "https://github.com/estesp/manifest-tool";
     license = licenses.asl20;
     platforms = platforms.linux;
diff --git a/nix/toolchain.nix b/nix/toolchain.nix
index 079fcf13..532db74e 100644
--- a/nix/toolchain.nix
+++ b/nix/toolchain.nix
@@ -1,6 +1,4 @@
-{
-  system ? builtins.currentSystem,
-}:
+{ system ? builtins.currentSystem, }:
 
 with import ./common.nix;
 
@@ -11,27 +9,23 @@ let
     #"aarch64-unknown-linux-musl"
     "armv6l-unknown-linux-musleabihf"
   ];
-  pkgsList = builtins.map (target: import pkgsSrc { 
-    inherit system; 
-    crossSystem = {
-      config = target;
-      isStatic = true;
-    };
-    overlays = [ cargo2nixOverlay ];
-  }) platforms;
-  pkgsHost = import pkgsSrc {};
+  pkgsList = builtins.map (target:
+    import pkgsSrc {
+      inherit system;
+      crossSystem = {
+        config = target;
+        isStatic = true;
+      };
+      overlays = [ cargo2nixOverlay ];
+    }) platforms;
+  pkgsHost = import pkgsSrc { };
   lib = pkgsHost.lib;
   kaniko = (import ./kaniko.nix) pkgsHost;
   winscp = (import ./winscp.nix) pkgsHost;
   manifestTool = (import ./manifest-tool.nix) pkgsHost;
-in 
-  lib.flatten (builtins.map (pkgs: [
-     pkgs.rustPlatform.rust.rustc
-     pkgs.rustPlatform.rust.cargo
-     pkgs.buildPackages.stdenv.cc
-  ]) pkgsList) ++ [
-    kaniko
-    winscp
-    manifestTool
-  ]
+in lib.flatten (builtins.map (pkgs: [
+  pkgs.rustPlatform.rust.rustc
+  pkgs.rustPlatform.rust.cargo
+  pkgs.buildPackages.stdenv.cc
+]) pkgsList) ++ [ kaniko winscp manifestTool ]
 
diff --git a/nix/winscp.nix b/nix/winscp.nix
index 10d3cb28..113f4506 100644
--- a/nix/winscp.nix
+++ b/nix/winscp.nix
@@ -11,12 +11,12 @@ pkgs.stdenv.mkDerivation rec {
   };
 
   buildPhase = ''
-    cat > winscp <<EOF
-#!${pkgs.bash}/bin/bash
+        cat > winscp <<EOF
+    #!${pkgs.bash}/bin/bash
 
-WINEDEBUG=-all
-${pkgs.winePackages.minimal}/bin/wine $out/opt/WinSCP.com
-EOF
+    WINEDEBUG=-all
+    ${pkgs.winePackages.minimal}/bin/wine $out/opt/WinSCP.com
+    EOF
   '';
 
   installPhase = ''
diff --git a/shell.nix b/shell.nix
index 10058fc4..0d510e33 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,6 +1,4 @@
-{
-    system ? builtins.currentSystem,
-}:
+{ system ? builtins.currentSystem, }:
 
 with import ./nix/common.nix;
 
@@ -13,161 +11,152 @@ let
   manifest-tool = (import ./nix/manifest-tool.nix) pkgs;
   winscp = (import ./nix/winscp.nix) pkgs;
 
-in
-  {
-    /* --- Rust Shell ---
-     * Use it to compile Garage
-     */
-    rust = pkgs.mkShell {
-      nativeBuildInputs = [
-        #pkgs.rustPlatform.rust.rustc
-        pkgs.rustPlatform.rust.cargo
-        #pkgs.clippy
-        pkgs.rustfmt
-        #pkgs.perl
-        #pkgs.protobuf
-        #pkgs.pkg-config
-        #pkgs.openssl
-        pkgs.file
-        #cargo2nix.packages.x86_64-linux.cargo2nix
-      ];
-    };
-
-    /* --- Integration shell ---
-     * Use it to test Garage with common S3 clients
-     */
-    integration = pkgs.mkShell {
-      nativeBuildInputs = [
-        winscp
-        pkgs.s3cmd
-        pkgs.awscli2
-        pkgs.minio-client
-        pkgs.rclone
-        pkgs.socat
-        pkgs.psmisc
-        pkgs.which
-        pkgs.openssl
-        pkgs.curl
-        pkgs.jq
-      ];
-    };
-
-    /* --- Release shell ---
-     * A shell built to make releasing easier
-     */
-    release = pkgs.mkShell {
-      shellHook = ''
-function refresh_toolchain {
-  pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
-  nix copy \
-    --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
-    $(nix-store -qR \
-      $(nix-build --no-build-output --no-out-link nix/toolchain.nix))
-  rm /tmp/nix-signing-key.sec
-}
-
-function refresh_cache {
-  pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
-  for attr in clippy.amd64 test.amd64 pkgs.{amd64,i386,arm,arm64}.{debug,release}; do
-    echo "Updating cache for ''${attr}"
-    derivation=$(nix-instantiate --attr ''${attr})
-    nix copy -j8 \
-      --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
-      $(nix-store -qR ''${derivation%\!bin})
-  done
-  rm /tmp/nix-signing-key.sec
-}
-
-function refresh_flake_cache {
-  pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
-  for attr in packages.x86_64-linux.default; do
-    echo "Updating cache for ''${attr}"
-    derivation=$(nix path-info --derivation ".#''${attr}")
-    nix copy -j8 \
-      --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
-      $(nix-store -qR ''${derivation})
-  done
-  rm /tmp/nix-signing-key.sec
-}
-
-function to_s3 {
-  aws \
-      --endpoint-url https://garage.deuxfleurs.fr \
-      --region garage \
-    s3 cp \
-      ./result-bin/bin/garage \
-      s3://garagehq.deuxfleurs.fr/_releases/''${DRONE_TAG:-$DRONE_COMMIT}/''${TARGET}/garage
-}
-
-function to_docker {
-  executor  \
-    --force \
-    --customPlatform="''${DOCKER_PLATFORM}" \
-    --destination "''${CONTAINER_NAME}:''${CONTAINER_TAG}" \
-    --context dir://`pwd` \
-    --verbosity=debug
-}
-
-function multiarch_docker {
-        manifest-tool push from-spec <(cat <<EOF
-image: dxflrs/garage:''${CONTAINER_TAG}
-manifests:
-  -
-    image: dxflrs/arm64_garage:''${CONTAINER_TAG}
-    platform:
-      architecture: arm64
-      os: linux
-  -
-    image: dxflrs/amd64_garage:''${CONTAINER_TAG}
-    platform:
-      architecture: amd64
-      os: linux
-  -
-    image: dxflrs/386_garage:''${CONTAINER_TAG}
-    platform:
-      architecture: 386
-      os: linux
-  -
-    image: dxflrs/arm_garage:''${CONTAINER_TAG}
-    platform:
-      architecture: arm
-      os: linux
-EOF
-        )
-}
-
-function refresh_index {
-  aws \
-      --endpoint-url https://garage.deuxfleurs.fr \
-      --region garage \
-    s3 ls \
-      --recursive \
-      s3://garagehq.deuxfleurs.fr/_releases/ \
-  > aws-list.txt
-
-  nix-build nix/build_index.nix
+in {
+  # --- Rust Shell ---
+  # Use it to compile Garage
+  rust = pkgs.mkShell {
+    nativeBuildInputs = [
+      #pkgs.rustPlatform.rust.rustc
+      pkgs.rustPlatform.rust.cargo
+      #pkgs.clippy
+      pkgs.rustfmt
+      #pkgs.perl
+      #pkgs.protobuf
+      #pkgs.pkg-config
+      #pkgs.openssl
+      pkgs.file
+      #cargo2nix.packages.x86_64-linux.cargo2nix
+    ];
+  };
 
-  aws \
-      --endpoint-url https://garage.deuxfleurs.fr \
-      --region garage \
-    s3 cp \
-      result/share/_releases.json \
-      s3://garagehq.deuxfleurs.fr/
+  # --- Integration shell ---
+  # Use it to test Garage with common S3 clients
+  integration = pkgs.mkShell {
+    nativeBuildInputs = [
+      winscp
+      pkgs.s3cmd
+      pkgs.awscli2
+      pkgs.minio-client
+      pkgs.rclone
+      pkgs.socat
+      pkgs.psmisc
+      pkgs.which
+      pkgs.openssl
+      pkgs.curl
+      pkgs.jq
+    ];
+  };
 
-  aws \
-      --endpoint-url https://garage.deuxfleurs.fr \
-      --region garage \
-    s3 cp \
-      result/share/_releases.html \
-      s3://garagehq.deuxfleurs.fr/
+  # --- Release shell ---
+  # A shell built to make releasing easier
+  release = pkgs.mkShell {
+    shellHook = ''
+      function refresh_toolchain {
+        pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
+        nix copy \
+          --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
+          $(nix-store -qR \
+            $(nix-build --no-build-output --no-out-link nix/toolchain.nix))
+        rm /tmp/nix-signing-key.sec
+      }
+
+      function refresh_cache {
+        pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
+        for attr in clippy.amd64 test.amd64 pkgs.{amd64,i386,arm,arm64}.{debug,release}; do
+          echo "Updating cache for ''${attr}"
+          derivation=$(nix-instantiate --attr ''${attr})
+          nix copy -j8 \
+            --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
+            $(nix-store -qR ''${derivation%\!bin})
+        done
+        rm /tmp/nix-signing-key.sec
+      }
+
+      function refresh_flake_cache {
+        pass show deuxfleurs/nix_priv_key > /tmp/nix-signing-key.sec
+        for attr in packages.x86_64-linux.default devShell.x86_64-linux; do
+          echo "Updating cache for ''${attr}"
+          derivation=$(nix path-info --derivation ".#''${attr}")
+          nix copy -j8 \
+            --to 's3://nix?endpoint=garage.deuxfleurs.fr&region=garage&secret-key=/tmp/nix-signing-key.sec' \
+            $(nix-store -qR ''${derivation})
+        done
+        rm /tmp/nix-signing-key.sec
+      }
+
+      function to_s3 {
+        aws \
+            --endpoint-url https://garage.deuxfleurs.fr \
+            --region garage \
+          s3 cp \
+            ./result-bin/bin/garage \
+            s3://garagehq.deuxfleurs.fr/_releases/''${DRONE_TAG:-$DRONE_COMMIT}/''${TARGET}/garage
+      }
+
+      function to_docker {
+        executor  \
+          --force \
+          --customPlatform="''${DOCKER_PLATFORM}" \
+          --destination "''${CONTAINER_NAME}:''${CONTAINER_TAG}" \
+          --context dir://`pwd` \
+          --verbosity=debug
+      }
+
+      function multiarch_docker {
+              manifest-tool push from-spec <(cat <<EOF
+      image: dxflrs/garage:''${CONTAINER_TAG}
+      manifests:
+        -
+          image: dxflrs/arm64_garage:''${CONTAINER_TAG}
+          platform:
+            architecture: arm64
+            os: linux
+        -
+          image: dxflrs/amd64_garage:''${CONTAINER_TAG}
+          platform:
+            architecture: amd64
+            os: linux
+        -
+          image: dxflrs/386_garage:''${CONTAINER_TAG}
+          platform:
+            architecture: 386
+            os: linux
+        -
+          image: dxflrs/arm_garage:''${CONTAINER_TAG}
+          platform:
+            architecture: arm
+            os: linux
+      EOF
+              )
+      }
+
+      function refresh_index {
+        aws \
+            --endpoint-url https://garage.deuxfleurs.fr \
+            --region garage \
+          s3 ls \
+            --recursive \
+            s3://garagehq.deuxfleurs.fr/_releases/ \
+        > aws-list.txt
+
+        nix-build nix/build_index.nix
+
+        aws \
+            --endpoint-url https://garage.deuxfleurs.fr \
+            --region garage \
+          s3 cp \
+            result/share/_releases.json \
+            s3://garagehq.deuxfleurs.fr/
+
+        aws \
+            --endpoint-url https://garage.deuxfleurs.fr \
+            --region garage \
+          s3 cp \
+            result/share/_releases.html \
+            s3://garagehq.deuxfleurs.fr/
+      }
+    '';
+    nativeBuildInputs = [ pkgs.awscli2 kaniko manifest-tool ];
+  };
 }
-        '';
-      nativeBuildInputs = [
-        pkgs.awscli2
-        kaniko 
-        manifest-tool
-      ];
-    };
-  }
-
 
-- 
cgit v1.2.3


From efb6b6e868be1be0725125485810ce96e74ed124 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Thu, 26 Jan 2023 15:04:32 +0100
Subject: Disk space report

Report available disk space on nodes and calculate cluster-wide available space in `garage stats` (fix #479)
---
 Cargo.lock                |  15 ++++++
 Cargo.nix                 |  19 ++++++-
 Makefile                  |   2 +-
 src/garage/admin.rs       | 125 +++++++++++++++++++++++++++++++++++++++-------
 src/garage/cli/cmd.rs     |  15 +++++-
 src/garage/cli/structs.rs |   5 ++
 src/rpc/Cargo.toml        |   1 +
 src/rpc/system.rs         |  73 +++++++++++++++++++++------
 8 files changed, 220 insertions(+), 35 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 5d38b92a..871d897f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1230,6 +1230,7 @@ dependencies = [
  "serde",
  "serde_bytes",
  "serde_json",
+ "systemstat",
  "tokio",
  "tokio-stream",
  "tracing",
@@ -3567,6 +3568,20 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "systemstat"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a24aec24a9312c83999a28e3ef9db7e2afd5c64bf47725b758cdc1cafd5b0bd2"
+dependencies = [
+ "bytesize",
+ "lazy_static",
+ "libc",
+ "nom",
+ "time 0.3.9",
+ "winapi",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.3.0"
diff --git a/Cargo.nix b/Cargo.nix
index 9ee5b9fb..24c09e92 100644
--- a/Cargo.nix
+++ b/Cargo.nix
@@ -32,7 +32,7 @@ args@{
   ignoreLockHash,
 }:
 let
-  nixifiedLockHash = "8461dcfb984a8d042fecb5745d5da17912135dbf2a8ef7e6c3ae8e64c03d9744";
+  nixifiedLockHash = "e59ef222aaaada125e2a5fccbd215b545740b2abd21ce381c42a7a6e3a7e672a";
   workspaceSrc = if args.workspaceSrc == null then ./. else args.workspaceSrc;
   currentLockHash = builtins.hashFile "sha256" (workspaceSrc + /Cargo.lock);
   lockHashIgnored = if ignoreLockHash
@@ -1753,6 +1753,7 @@ in
       serde = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".serde."1.0.137" { inherit profileName; }).out;
       serde_bytes = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".serde_bytes."0.11.5" { inherit profileName; }).out;
       serde_json = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".serde_json."1.0.81" { inherit profileName; }).out;
+      systemstat = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".systemstat."0.2.3" { inherit profileName; }).out;
       tokio = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".tokio."1.17.0" { inherit profileName; }).out;
       tokio_stream = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".tokio-stream."0.1.8" { inherit profileName; }).out;
       tracing = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".tracing."0.1.32" { inherit profileName; }).out;
@@ -4917,6 +4918,21 @@ in
     };
   });
   
+  "registry+https://github.com/rust-lang/crates.io-index".systemstat."0.2.3" = overridableMkRustCrate (profileName: rec {
+    name = "systemstat";
+    version = "0.2.3";
+    registry = "registry+https://github.com/rust-lang/crates.io-index";
+    src = fetchCratesIo { inherit name version; sha256 = "a24aec24a9312c83999a28e3ef9db7e2afd5c64bf47725b758cdc1cafd5b0bd2"; };
+    dependencies = {
+      bytesize = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".bytesize."1.1.0" { inherit profileName; }).out;
+      lazy_static = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".lazy_static."1.4.0" { inherit profileName; }).out;
+      libc = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".libc."0.2.121" { inherit profileName; }).out;
+      ${ if hostPlatform.parsed.kernel.name == "linux" || hostPlatform.parsed.kernel.name == "android" then "nom" else null } = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".nom."7.1.1" { inherit profileName; }).out;
+      time = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".time."0.3.9" { inherit profileName; }).out;
+      ${ if hostPlatform.isWindows then "winapi" else null } = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".winapi."0.3.9" { inherit profileName; }).out;
+    };
+  });
+  
   "registry+https://github.com/rust-lang/crates.io-index".tempfile."3.3.0" = overridableMkRustCrate (profileName: rec {
     name = "tempfile";
     version = "3.3.0";
@@ -5890,6 +5906,7 @@ in
       [ "ntsecapi" ]
       [ "ntstatus" ]
       [ "objbase" ]
+      [ "pdh" ]
       [ "processenv" ]
       [ "processthreadsapi" ]
       [ "profileapi" ]
diff --git a/Makefile b/Makefile
index 23e10f78..55fa16dd 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ all:
 	clear; cargo build
 
 release:
-	nix-build --arg release true
+	nix-build --attr pkgs.amd64.release --no-build-output
 
 shell:
 	nix-shell
diff --git a/src/garage/admin.rs b/src/garage/admin.rs
index 305c5c65..4eabebca 100644
--- a/src/garage/admin.rs
+++ b/src/garage/admin.rs
@@ -15,6 +15,7 @@ use garage_util::time::*;
 use garage_table::replication::*;
 use garage_table::*;
 
+use garage_rpc::ring::PARTITION_BITS;
 use garage_rpc::*;
 
 use garage_block::manager::BlockResyncErrorInfo;
@@ -783,6 +784,7 @@ impl AdminRpcHandler {
 			for node in ring.layout.node_ids().iter() {
 				let mut opt = opt.clone();
 				opt.all_nodes = false;
+				opt.skip_global = true;
 
 				writeln!(&mut ret, "\n======================").unwrap();
 				writeln!(&mut ret, "Stats for node {:?}:", node).unwrap();
@@ -799,6 +801,15 @@ impl AdminRpcHandler {
 					Err(e) => writeln!(&mut ret, "Network error: {}", e).unwrap(),
 				}
 			}
+
+			writeln!(&mut ret, "\n======================").unwrap();
+			write!(
+				&mut ret,
+				"Cluster statistics:\n\n{}",
+				self.gather_cluster_stats()
+			)
+			.unwrap();
+
 			Ok(AdminRpc::Ok(ret))
 		} else {
 			Ok(AdminRpc::Ok(self.gather_stats_local(opt)?))
@@ -819,22 +830,6 @@ impl AdminRpcHandler {
 
 		writeln!(&mut ret, "\nDatabase engine: {}", self.garage.db.engine()).unwrap();
 
-		// Gather ring statistics
-		let ring = self.garage.system.ring.borrow().clone();
-		let mut ring_nodes = HashMap::new();
-		for (_i, loc) in ring.partitions().iter() {
-			for n in ring.get_nodes(loc, ring.replication_factor).iter() {
-				if !ring_nodes.contains_key(n) {
-					ring_nodes.insert(*n, 0usize);
-				}
-				*ring_nodes.get_mut(n).unwrap() += 1;
-			}
-		}
-		writeln!(&mut ret, "\nRing nodes & partition count:").unwrap();
-		for (n, c) in ring_nodes.iter() {
-			writeln!(&mut ret, "  {:?} {}", n, c).unwrap();
-		}
-
 		// Gather table statistics
 		let mut table = vec!["  Table\tItems\tMklItems\tMklTodo\tGcTodo".into()];
 		table.push(self.gather_table_stats(&self.garage.bucket_table, opt.detailed)?);
@@ -881,12 +876,108 @@ impl AdminRpcHandler {
 		.unwrap();
 
 		if !opt.detailed {
-			writeln!(&mut ret, "\nIf values are missing (marked as NC), consider adding the --detailed flag - this will be slow.").unwrap();
+			writeln!(&mut ret, "\nIf values are missing above (marked as NC), consider adding the --detailed flag (this will be slow).").unwrap();
+		}
+
+		if !opt.skip_global {
+			write!(&mut ret, "\n{}", self.gather_cluster_stats()).unwrap();
 		}
 
 		Ok(ret)
 	}
 
+	fn gather_cluster_stats(&self) -> String {
+		let mut ret = String::new();
+
+		// Gather storage node and free space statistics
+		let layout = &self.garage.system.ring.borrow().layout;
+		let mut node_partition_count = HashMap::<Uuid, u64>::new();
+		for short_id in layout.ring_assignation_data.iter() {
+			let id = layout.node_id_vec[*short_id as usize];
+			*node_partition_count.entry(id).or_default() += 1;
+		}
+		let node_info = self
+			.garage
+			.system
+			.get_known_nodes()
+			.into_iter()
+			.map(|n| (n.id, n))
+			.collect::<HashMap<_, _>>();
+
+		let mut table = vec!["  ID\tHostname\tZone\tCapacity\tPart.\tDataAvail\tMetaAvail".into()];
+		for (id, parts) in node_partition_count.iter() {
+			let info = node_info.get(id);
+			let status = info.map(|x| &x.status);
+			let role = layout.roles.get(id).and_then(|x| x.0.as_ref());
+			let hostname = status.map(|x| x.hostname.as_str()).unwrap_or("?");
+			let zone = role.map(|x| x.zone.as_str()).unwrap_or("?");
+			let capacity = role.map(|x| x.capacity_string()).unwrap_or("?".into());
+			let avail_str = |x| match x {
+				Some((avail, total)) => {
+					let pct = (avail as f64) / (total as f64) * 100.;
+					let avail = bytesize::ByteSize::b(avail);
+					let total = bytesize::ByteSize::b(total);
+					format!("{}/{} ({:.1}%)", avail, total, pct)
+				}
+				None => "?".into(),
+			};
+			let data_avail = avail_str(status.and_then(|x| x.data_disk_avail));
+			let meta_avail = avail_str(status.and_then(|x| x.meta_disk_avail));
+			table.push(format!(
+				"  {:?}\t{}\t{}\t{}\t{}\t{}\t{}",
+				id, hostname, zone, capacity, parts, data_avail, meta_avail
+			));
+		}
+		write!(
+			&mut ret,
+			"Storage nodes:\n{}",
+			format_table_to_string(table)
+		)
+		.unwrap();
+
+		let meta_part_avail = node_partition_count
+			.iter()
+			.filter_map(|(id, parts)| {
+				node_info
+					.get(id)
+					.and_then(|x| x.status.meta_disk_avail)
+					.map(|c| c.0 / *parts)
+			})
+			.collect::<Vec<_>>();
+		let data_part_avail = node_partition_count
+			.iter()
+			.filter_map(|(id, parts)| {
+				node_info
+					.get(id)
+					.and_then(|x| x.status.data_disk_avail)
+					.map(|c| c.0 / *parts)
+			})
+			.collect::<Vec<_>>();
+		if !meta_part_avail.is_empty() && !data_part_avail.is_empty() {
+			let meta_avail =
+				bytesize::ByteSize(meta_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
+			let data_avail =
+				bytesize::ByteSize(data_part_avail.iter().min().unwrap() * (1 << PARTITION_BITS));
+			writeln!(
+				&mut ret,
+				"\nEstimated available storage space cluster-wide (might be lower in practice):"
+			)
+			.unwrap();
+			if meta_part_avail.len() < node_partition_count.len()
+				|| data_part_avail.len() < node_partition_count.len()
+			{
+				writeln!(&mut ret, "  data: < {}", data_avail).unwrap();
+				writeln!(&mut ret, "  metadata: < {}", meta_avail).unwrap();
+				writeln!(&mut ret, "A precise estimate could not be given as information is missing for some storage nodes.").unwrap();
+			} else {
+				writeln!(&mut ret, "  data: {}", data_avail).unwrap();
+				writeln!(&mut ret, "  metadata: {}", meta_avail).unwrap();
+			}
+		}
+
+		ret
+	}
+
 	fn gather_table_stats<F, R>(
 		&self,
 		t: &Arc<Table<F, R>>,
diff --git a/src/garage/cli/cmd.rs b/src/garage/cli/cmd.rs
index 46e9113c..af7f1aa1 100644
--- a/src/garage/cli/cmd.rs
+++ b/src/garage/cli/cmd.rs
@@ -59,18 +59,29 @@ pub async fn cmd_status(rpc_cli: &Endpoint<SystemRpc, ()>, rpc_host: NodeID) ->
 	let layout = fetch_layout(rpc_cli, rpc_host).await?;
 
 	println!("==== HEALTHY NODES ====");
-	let mut healthy_nodes = vec!["ID\tHostname\tAddress\tTags\tZone\tCapacity".to_string()];
+	let mut healthy_nodes =
+		vec!["ID\tHostname\tAddress\tTags\tZone\tCapacity\tDataAvail\tMetaAvail".to_string()];
 	for adv in status.iter().filter(|adv| adv.is_up) {
 		match layout.roles.get(&adv.id) {
 			Some(NodeRoleV(Some(cfg))) => {
+				let data_avail = match &adv.status.data_disk_avail {
+					_ if cfg.capacity.is_none() => "N/A".into(),
+					Some((avail, total)) => {
+						let pct = (*avail as f64) / (*total as f64) * 100.;
+						let avail = bytesize::ByteSize::b(*avail);
+						format!("{} ({:.1}%)", avail, pct)
+					}
+					None => "?".into(),
+				};
 				healthy_nodes.push(format!(
-					"{id:?}\t{host}\t{addr}\t[{tags}]\t{zone}\t{capacity}",
+					"{id:?}\t{host}\t{addr}\t[{tags}]\t{zone}\t{capacity}\t{data_avail}",
 					id = adv.id,
 					host = adv.status.hostname,
 					addr = adv.addr,
 					tags = cfg.tags.join(","),
 					zone = cfg.zone,
 					capacity = cfg.capacity_string(),
+					data_avail = data_avail,
 				));
 			}
 			_ => {
diff --git a/src/garage/cli/structs.rs b/src/garage/cli/structs.rs
index 661a71f0..01ae92da 100644
--- a/src/garage/cli/structs.rs
+++ b/src/garage/cli/structs.rs
@@ -504,6 +504,11 @@ pub struct StatsOpt {
 	/// Gather detailed statistics (this can be long)
 	#[structopt(short = "d", long = "detailed")]
 	pub detailed: bool,
+
+	/// Don't show global cluster stats (internal use in RPC)
+	#[structopt(skip)]
+	#[serde(default)]
+	pub skip_global: bool,
 }
 
 #[derive(Serialize, Deserialize, StructOpt, Debug, Eq, PartialEq, Clone)]
diff --git a/src/rpc/Cargo.toml b/src/rpc/Cargo.toml
index e9a0929a..2daa0176 100644
--- a/src/rpc/Cargo.toml
+++ b/src/rpc/Cargo.toml
@@ -23,6 +23,7 @@ hex = "0.4"
 tracing = "0.1.30"
 rand = "0.8"
 sodiumoxide = { version = "0.2.5-0", package = "kuska-sodiumoxide" }
+systemstat = "0.2.3"
 
 async-trait = "0.1.7"
 serde = { version = "1.0", default-features = false, features = ["derive", "rc"] }
diff --git a/src/rpc/system.rs b/src/rpc/system.rs
index 90f6a4c2..a9e91e19 100644
--- a/src/rpc/system.rs
+++ b/src/rpc/system.rs
@@ -118,18 +118,28 @@ pub struct System {
 
 	/// Path to metadata directory
 	pub metadata_dir: PathBuf,
+	/// Path to data directory
+	pub data_dir: PathBuf,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct NodeStatus {
 	/// Hostname of the node
 	pub hostname: String,
+
 	/// Replication factor configured on the node
 	pub replication_factor: usize,
 	/// Cluster layout version
 	pub cluster_layout_version: u64,
 	/// Hash of cluster layout staging data
 	pub cluster_layout_staging_hash: Hash,
+
+	/// Disk usage on partition containing metadata directory (tuple: `(avail, total)`)
+	#[serde(default)]
+	pub meta_disk_avail: Option<(u64, u64)>,
+	/// Disk usage on partition containing data directory (tuple: `(avail, total)`)
+	#[serde(default)]
+	pub data_disk_avail: Option<(u64, u64)>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -271,14 +281,8 @@ impl System {
 			}
 		};
 
-		let local_status = NodeStatus {
-			hostname: gethostname::gethostname()
-				.into_string()
-				.unwrap_or_else(|_| "<invalid utf-8>".to_string()),
-			replication_factor,
-			cluster_layout_version: cluster_layout.version,
-			cluster_layout_staging_hash: cluster_layout.staging_hash,
-		};
+		let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
+		local_status.update_disk_usage(&config.metadata_dir, &config.data_dir);
 
 		#[cfg(feature = "metrics")]
 		let metrics = SystemMetrics::new(replication_factor);
@@ -379,6 +383,7 @@ impl System {
 			ring,
 			update_ring: Mutex::new(update_ring),
 			metadata_dir: config.metadata_dir.clone(),
+			data_dir: config.data_dir.clone(),
 		});
 		sys.system_endpoint.set_handler(sys.clone());
 		Ok(sys)
@@ -416,12 +421,7 @@ impl System {
 					.get(&n.id.into())
 					.cloned()
 					.map(|(_, st)| st)
-					.unwrap_or(NodeStatus {
-						hostname: "?".to_string(),
-						replication_factor: 0,
-						cluster_layout_version: 0,
-						cluster_layout_staging_hash: Hash::from([0u8; 32]),
-					}),
+					.unwrap_or(NodeStatus::unknown()),
 			})
 			.collect::<Vec<_>>();
 		known_nodes
@@ -600,6 +600,9 @@ impl System {
 		let ring = self.ring.borrow();
 		new_si.cluster_layout_version = ring.layout.version;
 		new_si.cluster_layout_staging_hash = ring.layout.staging_hash;
+
+		new_si.update_disk_usage(&self.metadata_dir, &self.data_dir);
+
 		self.local_status.swap(Arc::new(new_si));
 	}
 
@@ -864,6 +867,48 @@ impl EndpointHandler<SystemRpc> for System {
 	}
 }
 
+impl NodeStatus {
+	fn initial(replication_factor: usize, layout: &ClusterLayout) -> Self {
+		NodeStatus {
+			hostname: gethostname::gethostname()
+				.into_string()
+				.unwrap_or_else(|_| "<invalid utf-8>".to_string()),
+			replication_factor,
+			cluster_layout_version: layout.version,
+			cluster_layout_staging_hash: layout.staging_hash,
+			meta_disk_avail: None,
+			data_disk_avail: None,
+		}
+	}
+
+	fn unknown() -> Self {
+		NodeStatus {
+			hostname: "?".to_string(),
+			replication_factor: 0,
+			cluster_layout_version: 0,
+			cluster_layout_staging_hash: Hash::from([0u8; 32]),
+			meta_disk_avail: None,
+			data_disk_avail: None,
+		}
+	}
+
+	fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &Path) {
+		use systemstat::{Platform, System};
+		let mounts = System::new().mounts().unwrap_or_default();
+
+		let mount_avail = |path: &Path| {
+			mounts
+				.iter()
+				.filter(|x| path.starts_with(&x.fs_mounted_on))
+				.max_by_key(|x| x.fs_mounted_on.len())
+				.map(|x| (x.avail.as_u64(), x.total.as_u64()))
+		};
+
+		self.meta_disk_avail = mount_avail(meta_dir);
+		self.data_disk_avail = mount_avail(data_dir);
+	}
+}
+
 fn get_default_ip() -> Option<IpAddr> {
 	pnet_datalink::interfaces()
 		.iter()
-- 
cgit v1.2.3


From c7d0ad0aa0e492b913c5dda8ff1a7ad5a579fb3a Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Thu, 26 Jan 2023 15:30:36 +0100
Subject: Add local disk usage to exported prometheus metrics

---
 src/rpc/lib.rs            |  6 +++---
 src/rpc/system.rs         | 37 ++++++++++++++++++++++++++++---------
 src/rpc/system_metrics.rs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 12 deletions(-)

diff --git a/src/rpc/lib.rs b/src/rpc/lib.rs
index a8cc0030..5aec92c0 100644
--- a/src/rpc/lib.rs
+++ b/src/rpc/lib.rs
@@ -3,6 +3,9 @@
 #[macro_use]
 extern crate tracing;
 
+mod metrics;
+mod system_metrics;
+
 #[cfg(feature = "consul-discovery")]
 mod consul;
 #[cfg(feature = "kubernetes-discovery")]
@@ -13,9 +16,6 @@ pub mod replication_mode;
 pub mod ring;
 pub mod system;
 
-mod metrics;
 pub mod rpc_helper;
 
 pub use rpc_helper::*;
-
-pub mod system_metrics;
diff --git a/src/rpc/system.rs b/src/rpc/system.rs
index a9e91e19..e0ced8cc 100644
--- a/src/rpc/system.rs
+++ b/src/rpc/system.rs
@@ -3,6 +3,7 @@ use std::collections::HashMap;
 use std::io::{Read, Write};
 use std::net::{IpAddr, SocketAddr};
 use std::path::{Path, PathBuf};
+use std::sync::atomic::Ordering;
 use std::sync::{Arc, RwLock};
 use std::time::{Duration, Instant};
 
@@ -38,7 +39,6 @@ use crate::replication_mode::*;
 use crate::ring::*;
 use crate::rpc_helper::*;
 
-#[cfg(feature = "metrics")]
 use crate::system_metrics::*;
 
 const DISCOVERY_INTERVAL: Duration = Duration::from_secs(60);
@@ -106,7 +106,7 @@ pub struct System {
 	consul_discovery: Option<ConsulDiscovery>,
 	#[cfg(feature = "kubernetes-discovery")]
 	kubernetes_discovery: Option<KubernetesDiscoveryConfig>,
-	#[cfg(feature = "metrics")]
+
 	metrics: SystemMetrics,
 
 	replication_mode: ReplicationMode,
@@ -281,12 +281,11 @@ impl System {
 			}
 		};
 
-		let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
-		local_status.update_disk_usage(&config.metadata_dir, &config.data_dir);
-
-		#[cfg(feature = "metrics")]
 		let metrics = SystemMetrics::new(replication_factor);
 
+		let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
+		local_status.update_disk_usage(&config.metadata_dir, &config.data_dir, &metrics);
+
 		let ring = Ring::new(cluster_layout, replication_factor);
 		let (update_ring, ring) = watch::channel(Arc::new(ring));
 
@@ -377,7 +376,6 @@ impl System {
 			consul_discovery,
 			#[cfg(feature = "kubernetes-discovery")]
 			kubernetes_discovery: config.kubernetes_discovery.clone(),
-			#[cfg(feature = "metrics")]
 			metrics,
 
 			ring,
@@ -601,7 +599,7 @@ impl System {
 		new_si.cluster_layout_version = ring.layout.version;
 		new_si.cluster_layout_staging_hash = ring.layout.staging_hash;
 
-		new_si.update_disk_usage(&self.metadata_dir, &self.data_dir);
+		new_si.update_disk_usage(&self.metadata_dir, &self.data_dir, &self.metrics);
 
 		self.local_status.swap(Arc::new(new_si));
 	}
@@ -892,7 +890,7 @@ impl NodeStatus {
 		}
 	}
 
-	fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &Path) {
+	fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &Path, metrics: &SystemMetrics) {
 		use systemstat::{Platform, System};
 		let mounts = System::new().mounts().unwrap_or_default();
 
@@ -906,6 +904,27 @@ impl NodeStatus {
 
 		self.meta_disk_avail = mount_avail(meta_dir);
 		self.data_disk_avail = mount_avail(data_dir);
+
+		if let Some((avail, total)) = self.meta_disk_avail {
+			metrics
+				.values
+				.meta_disk_avail
+				.store(avail, Ordering::Relaxed);
+			metrics
+				.values
+				.meta_disk_total
+				.store(total, Ordering::Relaxed);
+		}
+		if let Some((avail, total)) = self.data_disk_avail {
+			metrics
+				.values
+				.data_disk_avail
+				.store(avail, Ordering::Relaxed);
+			metrics
+				.values
+				.data_disk_total
+				.store(total, Ordering::Relaxed);
+		}
 	}
 }
 
diff --git a/src/rpc/system_metrics.rs b/src/rpc/system_metrics.rs
index d96b67e4..83f5fa97 100644
--- a/src/rpc/system_metrics.rs
+++ b/src/rpc/system_metrics.rs
@@ -1,14 +1,31 @@
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::Arc;
+
 use opentelemetry::{global, metrics::*, KeyValue};
 
 /// TableMetrics reference all counter used for metrics
 pub struct SystemMetrics {
 	pub(crate) _garage_build_info: ValueObserver<u64>,
 	pub(crate) _replication_factor: ValueObserver<u64>,
+	pub(crate) _disk_avail: ValueObserver<u64>,
+	pub(crate) _disk_total: ValueObserver<u64>,
+	pub(crate) values: Arc<SystemMetricsValues>,
+}
+
+#[derive(Default)]
+pub struct SystemMetricsValues {
+	pub(crate) data_disk_total: AtomicU64,
+	pub(crate) data_disk_avail: AtomicU64,
+	pub(crate) meta_disk_total: AtomicU64,
+	pub(crate) meta_disk_avail: AtomicU64,
 }
 
 impl SystemMetrics {
 	pub fn new(replication_factor: usize) -> Self {
 		let meter = global::meter("garage_system");
+		let values = Arc::new(SystemMetricsValues::default());
+		let values1 = values.clone();
+		let values2 = values.clone();
 		Self {
 			_garage_build_info: meter
 				.u64_value_observer("garage_build_info", move |observer| {
@@ -28,6 +45,33 @@ impl SystemMetrics {
 				})
 				.with_description("Garage replication factor setting")
 				.init(),
+			_disk_avail: meter
+				.u64_value_observer("garage_local_disk_avail", move |observer| {
+					match values1.data_disk_avail.load(Ordering::Relaxed) {
+						0 => (),
+						x => observer.observe(x, &[KeyValue::new("volume", "data")]),
+					};
+					match values1.meta_disk_avail.load(Ordering::Relaxed) {
+						0 => (),
+						x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
+					};
+				})
+				.with_description("Garage available disk space on each node")
+				.init(),
+			_disk_total: meter
+				.u64_value_observer("garage_local_disk_total", move |observer| {
+					match values2.data_disk_total.load(Ordering::Relaxed) {
+						0 => (),
+						x => observer.observe(x, &[KeyValue::new("volume", "data")]),
+					};
+					match values2.meta_disk_total.load(Ordering::Relaxed) {
+						0 => (),
+						x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
+					};
+				})
+				.with_description("Garage total disk space on each node")
+				.init(),
+			values,
 		}
 	}
 }
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