config: support zrepl's day and week units for snapshotting.interval

Originally, I had a patch that would replace all usages of time.Duration in package config with the new config.Duration types, but: 1. these are all timeouts/retry intervals that have default values. Most users don't touch them, and if they do, they don't need day or week units. 2. go-yaml's error reporting for yaml.Unmarshaler is inferior to built-in types (line numbers are missing, so the error would not have sufficient context) fixes https://github.com/zrepl/zrepl/issues/486
2022-10-09 21:15:46 +02:00
423 changed files with 4344 additions and 6344 deletions
@@ -1,8 +1,5 @@
 version: 2.1
-orbs:
-  # NB: this is not the Go version, but the Orb version
-  # https://circleci.com/developer/orbs/orb/circleci/go#usage-go-modules-cache
-  go: circleci/go@1.11.0
+
 commands:
  setup-home-local-bin:
    steps:
@@ -15,64 +12,132 @@ commands:
              echo "$line" >> $BASH_ENV
            fi

+  invoke-lazy-sh:
+    parameters:
+      subcommand:
+        type: string
+    steps:
+      - run:
+          environment:
+            TERM: xterm
+          command: ./lazy.sh <<parameters.subcommand>>
+
  apt-update-and-install-common-deps:
    steps:
-      - run: sudo apt-get update
-      - run: sudo apt-get install -y gawk make
-      # CircleCI doesn't update its cimg/go images.
-      # So, need to update manually to get up-to-date trust chains.
-      # The need for this was required for cimg/go:1.12, but let's future proof this here and now.
-      - run: sudo apt-get install -y git ca-certificates
+      - run: sudo apt update && sudo apt install gawk make

+  restore-cache-gomod:
+    steps:
+      - restore_cache:
+          key: go-mod-v4-{{ checksum "go.sum" }}
+  save-cache-gomod:
+    steps:
+      - save_cache:
+          key: go-mod-v4-{{ checksum "go.sum" }}
+          paths:
+            - "/go/pkg/mod"
+
+  install-godep:
+    steps:
+      - apt-update-and-install-common-deps
+      - invoke-lazy-sh:
+          subcommand: godep

  install-docdep:
    steps:
      - apt-update-and-install-common-deps
      - run: sudo apt install python3 python3-pip libgirepository1.0-dev
-      - run: pip3 install -r docs/requirements.txt
+      - invoke-lazy-sh:
+          subcommand: docdep

-  docs-publish-sh:
-    parameters:
-      push:
-        type: boolean
+  download-and-install-minio-client:
    steps:
-      - checkout
+      - setup-home-local-bin
+      - restore_cache:
+          key: minio-client-v2
      - run:
+          shell: /bin/bash -eo pipefail
          command: |
-            git config --global user.email "zreplbot@cschwarz.com"
-            git config --global user.name "zrepl-github-io-ci"
+            if which mc; then exit 0; fi
+            sudo curl -sSL https://dl.min.io/client/mc/release/linux-amd64/archive/mc.RELEASE.2020-08-20T00-23-01Z \
+              -o "$HOME/.local/bin/mc"
+            sudo chmod +x "$HOME/.local/bin/mc"
+      - save_cache:
+          key: minio-client-v2
+          paths:
+            - "$HOME/.local/bin/mc"

-      # if we're pushing, we need to add the deploy key
-      # which is stored as "Additional SSH Keys" in the CircleCI project settings.
-      # We can't use the CircleCI-manage deploy key because we're pushing
-      # to a different repo than the one we're building.
-      - when:
-          condition: << parameters.push >>
-          steps:
-            # https://circleci.com/docs/2.0/add-ssh-key/#adding-multiple-keys-with-blank-hostnames
-            - run: ssh-add -D
-            # the default circleci ssh config only additional ssh keys for Host !github.com
-            - run:
-                command: |
-                  cat > ~/.ssh/config \<<EOF
-                  Host *
-                    IdentityFile /home/circleci/.ssh/id_rsa_458e62c517f6c480e40452126ce47421
-                  EOF
-            - add_ssh_keys:
-                fingerprints:
-                  # deploy key for zrepl.github.io
-                  - "45:8e:62:c5:17:f6:c4:80:e4:04:52:12:6c:e4:74:21"
+  upload-minio:
+    parameters:
+      src:
+        type: string
+      dst:
+        type: string
+    steps:
+      - run:
+          shell: /bin/bash -eo pipefail
+          when: always
+          command: |
+            if [ -n "$CIRCLE_PR_NUMBER" ]; then # CIRCLE_PR_NUMBER is guaranteed to be only present in forked PRs (external)
+              echo "Forked PR detected. Sry, can't trust you with credentials to external artifact store, use CircleCI's instead."
+              exit 0
+            fi
+            set -u # from now on

-      # caller must install-docdep
-      - when:
-          condition: << parameters.push >>
-          steps:
-            - run: bash -x docs/publish.sh -c -a -P
-      - when:
-          condition:
-            not: << parameters.push >>
-          steps:
-            - run: bash -x docs/publish.sh -c -a
+            mc config host add --api s3v4 zrepl-minio https://minio.cschwarz.com ${MINIO_ACCESS_KEY} ${MINIO_SECRET_KEY}
+
+            # keep in sync with set-github-minio-status
+            jobprefix=zrepl-ci-artifacts/${CIRCLE_SHA1}-pipeline-<<pipeline.number>>/${CIRCLE_JOB}
+
+            # Upload artifacts
+            mkdir -p ./artifacts
+            mc cp -r <<parameters.src>> "zrepl-minio/$jobprefix/<<parameters.dst>>"
+
+  set-github-minio-status:
+    parameters:
+      context:
+        type: string
+      description:
+        type: string
+      minio-dst:
+        type: string
+    steps:
+      - run:
+          shell: /bin/bash -eo pipefail
+          command: |
+            if [ -n "$CIRCLE_PR_NUMBER" ]; then # CIRCLE_PR_NUMBER is guaranteed to be only present in forked PRs (external)
+              echo "Forked PR detected. Sry, can't trust you with credentials to external artifact store, use CircleCI's instead."
+              exit 0
+            fi
+            set -u # from now on
+
+            # keep in sync with with upload-minio command
+            jobprefix=zrepl-ci-artifacts/${CIRCLE_SHA1}-pipeline-<<pipeline.number>>/${CIRCLE_JOB}
+            # Push Artifact Link to GitHub
+            REPO="zrepl/zrepl"
+            COMMIT="${CIRCLE_SHA1}"
+            JOB_NAME="${CIRCLE_JOB}"
+            CONTEXT="<<parameters.context>>"
+            DESCRIPTION="<<parameters.description>>"
+            TARGETURL=https://minio.cschwarz.com/minio/"$jobprefix"/"<<parameters.minio-dst>>"
+            curl "https://api.github.com/repos/$REPO/statuses/$COMMIT" \
+              -H "Content-Type: application/json" \
+              -H "Authorization: token $GITHUB_COMMIT_STATUS_TOKEN" \
+              -X POST \
+              -d '{"context":"'"$CONTEXT"'", "state": "success", "description":"'"$DESCRIPTION"'", "target_url":"'"$TARGETURL"'"}'
+
+
+  trigger-pipeline:
+    parameters:
+      body_no_shell_subst:
+        type: string
+    steps:
+      - run: |
+          curl -X POST https://circleci.com/api/v2/project/github/zrepl/zrepl/pipeline \
+            -H 'Content-Type: application/json' \
+            -H 'Accept: application/json' \
+            -H "Circle-Token: $ZREPL_BOT_CIRCLE_TOKEN" \
+            --data '<<parameters.body_no_shell_subst>>'

 parameters:
  do_ci:
@@ -83,6 +148,10 @@ parameters:
    type: boolean
    default: false

+  release_docker_baseimage_tag:
+    type: string
+    default: "1.17"
+
 workflows:
  version: 2

@@ -90,20 +159,20 @@ workflows:
    when: << pipeline.parameters.do_ci >>
    jobs:
      - quickcheck-docs
-      - quickcheck-go:
-          name: quickcheck-go-amd64-linux-1.23.1
-          goversion: &latest-go-release "1.23.1"
+      - quickcheck-go: &quickcheck-go-smoketest
+          name: quickcheck-go-amd64-linux-1.17
+          goversion: &latest-go-release "1.17"
          goos: linux
          goarch: amd64
-      - test-go:
+      - test-go-on-latest-go-release:
          goversion: *latest-go-release
      - quickcheck-go:
          requires:
-            - quickcheck-go-amd64-linux-1.23.1 #quickcheck-go-smoketest.name
-          matrix:
+            - quickcheck-go-amd64-linux-1.17 #quickcheck-go-smoketest.name
+          matrix: &quickcheck-go-matrix
            alias: quickcheck-go-matrix
            parameters:
-              goversion: [*latest-go-release, "1.22.7"]
+              goversion: [*latest-go-release, "1.12"]
              goos: ["linux", "freebsd"]
              goarch: ["amd64", "arm64"]
            exclude:
@@ -111,15 +180,10 @@ workflows:
              - goversion: *latest-go-release
                goos: linux
                goarch: amd64
-      - platformtest:
-          matrix:
-            parameters:
-              goversion: [*latest-go-release]
-              goos: ["linux"]
-              goarch: ["amd64"]
-          requires:
-            - test-go
-            - quickcheck-go-<< matrix.goarch >>-<< matrix.goos >>-<< matrix.goversion >>
+              # not supported by Go 1.12
+              - goversion: "1.12"
+                goos: freebsd
+                goarch: arm64

  release:
    when: << pipeline.parameters.do_release >>
@@ -137,7 +201,20 @@ workflows:
            - release-deb
            - release-rpm

-  publish-zrepl.github.io:
+  periodic:
+    triggers:
+      - schedule:
+          cron: "00 17 * * *"
+          filters:
+            branches:
+              only:
+                - master
+                - stable
+                - problame/circleci-build
+    jobs:
+      - periodic-full-pipeline-run
+
+  zrepl.github.io:
    jobs:
      - publish-zrepl-github-io:
          filters:
@@ -148,15 +225,20 @@ workflows:
 jobs:
  quickcheck-docs:
    docker:
-      - image: cimg/base:2024.09
+      - image: cimg/base:2020.08
    steps:
      - checkout
      - install-docdep
-      # do the current docs build
      - run: make docs
-      # does the publish.sh script still work?
-      - docs-publish-sh:
-          push: false
+
+      - download-and-install-minio-client
+      - upload-minio:
+          src: artifacts
+          dst: ""
+      - set-github-minio-status:
+          context: artifacts/${CIRCLE_JOB}
+          description: artifacts of CI job ${CIRCLE_JOB}
+          minio-dst: ""

  quickcheck-go:
    parameters:
@@ -167,98 +249,62 @@ jobs:
      goarch:
        type: string
    docker:
-      # any toolchain >= 1.22 will auto-download GOTOOLCHAIN
-      - image: &cimg_with_modern_go cimg/go:1.22
+      - image: circleci/golang:<<parameters.goversion>>
    environment:
      GOOS: <<parameters.goos>>
      GOARCH: <<parameters.goarch>>
-      GOTOOLCHAIN: "go<<parameters.goversion>>"

    steps:
      - checkout

-      - go/load-cache:
-          key: quickcheck-<<parameters.goversion>>
-      - run: make build/install
+      - restore-cache-gomod
      - run: go mod download
      - run: cd build && go mod download
-      - go/save-cache:
-          key: quickcheck-<<parameters.goversion>>
+      - save-cache-gomod

-      # ensure all code has been generated
-      - run: make generate
-      - run: |
-          if output=$(git status --porcelain) && [ -z "$output" ]; then
-            echo "Working directory clean"
-          else
-            echo "Uncommitted changes"
-            echo ""
-            echo "$output"
-            exit 1
-          fi
-
-      # other checks
+      - install-godep
+      - run: make formatcheck
+      - run: make generate-platform-test-list
      - run: make zrepl-bin test-platform-bin
      - run: make vet
      - run: make lint

+      - download-and-install-minio-client
+      - run: rm -f artifacts/generate-platform-test-list
      - store_artifacts:
          path: artifacts
-      - persist_to_workspace:
-          root: .
-          paths: [.]
+      - upload-minio:
+          src: artifacts
+          dst: ""
+      - set-github-minio-status:
+          context: artifacts/${CIRCLE_JOB}
+          description: artifacts of CI job ${CIRCLE_JOB}
+          minio-dst: ""

-  platformtest:
-    parameters:
-      goversion:
-        type: string
-      goos:
-        type: string
-      goarch:
-        type: string
-    machine:
-      image: ubuntu-2204:current
-    resource_class: medium
-    environment:
-      GOOS: <<parameters.goos>>
-      GOARCH: <<parameters.goarch>>
-    steps:
-      - attach_workspace:
-          at: .
-      - run: sudo apt-get update
-      - run: sudo apt-get install -y zfsutils-linux
-      - run: sudo zfs version
-      - run: sudo make test-platform GOOS="$GOOS" GOARCH="$GOARCH"
-
-  test-go:
+  test-go-on-latest-go-release:
    parameters:
      goversion:
        type: string
    docker:
-      - image: *cimg_with_modern_go
-    environment:
-      GOTOOLCHAIN: "go<<parameters.goversion>>"
+      - image: circleci/golang:<<parameters.goversion>>
    steps:
      - checkout
-      - go/load-cache:
-          key: make-test-go
+      - restore-cache-gomod
      - run: make test-go
-      - go/save-cache:
-          key: make-test-go
+      # don't save-cache-gomod here, test-go doesn't pull all the dependencies

  release-build:
    machine:
-      image: &release-vm-image "ubuntu-2404:current"
-    resource_class: large
+      image: ubuntu-2004:202201-02
    steps:
      - checkout
-      - run: make release-docker
+      - run: make release-docker RELEASE_DOCKER_BASEIMAGE_TAG=<<pipeline.parameters.release_docker_baseimage_tag>>
      - persist_to_workspace:
          root: .
          paths: [.]
  release-deb:
    machine:
-      image: *release-vm-image
+      image: ubuntu-2004:202201-02
    steps:
      - attach_workspace:
          at: .
@@ -270,7 +316,7 @@ jobs:

  release-rpm:
    machine:
-      image: *release-vm-image
+      image: ubuntu-2004:202201-02
    steps:
      - attach_workspace:
          at: .
@@ -282,19 +328,52 @@ jobs:

  release-upload:
    docker:
-      - image: cimg/base:2024.09
+      - image: cimg/base:2020.08
    steps:
      - attach_workspace:
          at: .
-      - run: make wrapup-and-checksum
      - store_artifacts:
-          path: artifacts/release
+          path: artifacts
+      - download-and-install-minio-client
+      - upload-minio:
+          src: artifacts
+          dst: ""
+      - set-github-minio-status:
+          context: artifacts/release
+          description: CI-generated release artifacts
+          minio-dst: ""
+
+  periodic-full-pipeline-run:
+    docker:
+      - image: cimg/base:2020.08
+    steps:
+      - trigger-pipeline:
+          body_no_shell_subst: '{"branch":"<<pipeline.git.branch>>", "parameters": { "do_ci": true, "do_release": true }}'

  publish-zrepl-github-io:
    docker:
-      - image: cimg/base:2024.09
+      - image: cimg/python:3.7
    steps:
      - checkout
-      - install-docdep
-      - docs-publish-sh:
-          push: true
+      - invoke-lazy-sh:
+          subcommand: docdep
+      - run:
+          command: |
+            git config --global user.email "zreplbot@cschwarz.com"
+            git config --global user.name "zrepl-github-io-ci"
+
+      # https://circleci.com/docs/2.0/add-ssh-key/#adding-multiple-keys-with-blank-hostnames
+      - run: ssh-add -D
+      # the default circleci ssh config only additional ssh keys for Host !github.com
+      - run:
+          command: |
+            cat > ~/.ssh/config \<<EOF
+            Host *
+              IdentityFile /home/circleci/.ssh/id_rsa_458e62c517f6c480e40452126ce47421
+            EOF
+      - add_ssh_keys:
+          fingerprints:
+            # deploy key for zrepl.github.io
+            - "45:8e:62:c5:17:f6:c4:80:e4:04:52:12:6c:e4:74:21"
+
+      - run: bash -x docs/publish.sh -c -a
@@ -1,84 +0,0 @@
-import argparse
-from pathlib import Path
-import re
-
-import requests
-
-import time
-
-import os
-import argparse
-from pathlib import Path
-
-
-circle_token = os.environ.get('CIRCLE_TOKEN')
-if not circle_token:
-    raise ValueError('CIRCLE_TOKEN environment variable not set')
-
-parser = argparse.ArgumentParser(description='Download artifacts from CircleCI')
-parser.add_argument('build_num', type=str, help='Build number')
-parser.add_argument('dst', type=Path, help='Destination directory')
-parser.add_argument('--prefix', type=str, default='', help='Filter for prefix')
-parser.add_argument('--match', type=str, default='.*', help='Only include paths matching the given regex')
-
-args = parser.parse_args()
-
-res = requests.get(
-    f"https://circleci.com/api/v1.1/project/github/zrepl/zrepl/{args.build_num}/artifacts",
-    headers={
-        "Circle-Token": circle_token,
-    },
-)
-res.raise_for_status()
-
-# https://circleci.com/docs/api/v1/index.html#artifacts-of-a-job
-# [ {
-#   "path" : "raw-test-output/go-test-report.xml",
-#   "pretty_path" : "raw-test-output/go-test-report.xml",
-#   "node_index" : 0,
-#   "url" : "https://24-88881093-gh.circle-artifacts.com/0/raw-test-output/go-test-report.xml"
-# }, {
-#   "path" : "raw-test-output/go-test.out",
-#   "pretty_path" : "raw-test-output/go-test.out",
-#   "node_index" : 0,
-#   "url" : "https://24-88881093-gh.circle-artifacts.com/0/raw-test-output/go-test.out"
-# } ]
-res = res.json()
-
-for artifact in res:
-    if not artifact["pretty_path"].startswith(args.prefix):
-        continue
-    if not re.match(args.match, artifact["pretty_path"]):
-        continue
-    stripped = artifact["pretty_path"][len(args.prefix):]
-    print(f"Downloading {artifact['pretty_path']} to {args.dst / stripped}")
-    artifact_rel = Path(stripped)
-    artifact_dst = args.dst / artifact_rel
-    artifact_dst.parent.mkdir(parents=True, exist_ok=True)
-
-    res = requests.get(
-        artifact["url"],
-        headers={
-            "Circle-Token": circle_token,
-        },
-        stream=True,
-    )
-    res.raise_for_status()
-
-    total_size = int(res.headers.get("Content-Length", 0))
-    block_size = 128 * 1024
-    with open(artifact_dst, "wb") as f:
-        progress = 0
-        start_time = time.time()
-        for chunk in res.iter_content(chunk_size=block_size):
-            f.write(chunk)
-            progress += len(chunk)
-            percent = progress / total_size * 100
-            elapsed_time = time.time() - start_time
-            if elapsed_time >= 5:
-                print(f"Downloaded {progress}/{total_size} bytes ({percent:.2f}%)", end="\r")
-                start_time = time.time()
-        print(f"Downloaded {progress}/{total_size} bytes ({percent:.2f}%)")
-    print("Download complete!")
-
-print("All files downloaded")
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+COMMIT="$1"
+GO_VERSION="$2"
+
+curl -v -X POST https://api.github.com/repos/zrepl/debian-binary-packaging/dispatches \
+    -H 'Accept: application/vnd.github.v3+json' \
+    -H "Authorization: token $GITHUB_ACCESS_TOKEN" \
+    --data '{"event_type": "push", "client_payload": { "zrepl_main_repo_commit": "'"$COMMIT"'", "go_version": "'"$GO_VERSION"'" }}'
@@ -1,9 +0,0 @@
-version: 2
-updates:
-  # Docs use Python only for static site generation.
-  - package-ecosystem: "pip"
-    directory: /docs
-    schedule:
-      interval: "weekly"
-    ignore:
-      - dependency-name: "*"
@@ -32,4 +32,3 @@ _testmain.go
 *.exe
 *.test
 *.prof
-.venv/
@@ -1,14 +1,6 @@
 linters:
  enable:
  - goimports
-  - revive
-
-linters-settings:
-  goimports:
-    local-prefixes: github.com/zrepl/zrepl
-  revive:
-    rules:
-      - name: time-equal

 issues:
  exclude-rules:
@@ -1,5 +1,5 @@
 .PHONY: generate build test vet cover release docs docs-clean clean format lint platformtest
-.PHONY: release release-noarch
+.PHONY: release bins-all release-noarch
 .DEFAULT_GOAL := zrepl-bin

 ARTIFACTDIR := artifacts
@@ -14,25 +14,22 @@ ifndef _ZREPL_VERSION
    endif
 endif

-ZREPL_PACKAGE_RELEASE := 1
-
 GO := go
 GOOS ?= $(shell bash -c 'source <($(GO) env) && echo "$$GOOS"')
 GOARCH ?= $(shell bash -c 'source <($(GO) env) && echo "$$GOARCH"')
 GOARM ?= $(shell bash -c 'source <($(GO) env) && echo "$$GOARM"')
 GOHOSTOS ?= $(shell bash -c 'source <($(GO) env) && echo "$$GOHOSTOS"')
 GOHOSTARCH ?= $(shell bash -c 'source <($(GO) env) && echo "$$GOHOSTARCH"')
-GO_ENV_VARS := CGO_ENABLED=0
+GO_ENV_VARS := GO111MODULE=on
 GO_LDFLAGS := "-X github.com/zrepl/zrepl/version.zreplVersion=$(_ZREPL_VERSION)"
 GO_MOD_READONLY := -mod=readonly
 GO_EXTRA_BUILDFLAGS :=
 GO_BUILDFLAGS := $(GO_MOD_READONLY) $(GO_EXTRA_BUILDFLAGS)
 GO_BUILD := $(GO_ENV_VARS) $(GO) build $(GO_BUILDFLAGS) -ldflags $(GO_LDFLAGS)
-GOCOVMERGE := $(GO) tool gocovmerge
-RELEASE_GOVERSION ?= go1.24.0
-STRIPPED_GOVERSION := $(subst go,,$(RELEASE_GOVERSION))
-RELEASE_DOCKER_BASEIMAGE ?= golang:$(STRIPPED_GOVERSION)
-RELEASE_DOCKER_CACHEMOUNT :=
+GOLANGCI_LINT := golangci-lint
+GOCOVMERGE := gocovmerge
+RELEASE_DOCKER_BASEIMAGE_TAG ?= 1.17
+RELEASE_DOCKER_BASEIMAGE ?= golang:$(RELEASE_DOCKER_BASEIMAGE_TAG)

 ifneq ($(GOARM),)
 	ZREPL_TARGET_TUPLE := $(GOOS)-$(GOARCH)v$(GOARM)
@@ -40,46 +37,34 @@ else
 	ZREPL_TARGET_TUPLE := $(GOOS)-$(GOARCH)
 endif

+.PHONY: printvars
+printvars:
+	@echo GOOS=$(GOOS)
+	@echo GOARCH=$(GOARCH)
+	@echo GOARM=$(GOARM)

-ifneq ($(RELEASE_DOCKER_CACHEMOUNT),)
-	_RELEASE_DOCKER_CACHEMOUNT := -v $(RELEASE_DOCKER_CACHEMOUNT)/mod:/go/pkg/mod -v $(RELEASE_DOCKER_CACHEMOUNT)/xdg-cache:/root/.cache/go-build
-.PHONY: release-docker-mkcachemount
-release-docker-mkcachemount:
-	mkdir -p $(RELEASE_DOCKER_CACHEMOUNT)
-	mkdir -p $(RELEASE_DOCKER_CACHEMOUNT)/mod
-	mkdir -p $(RELEASE_DOCKER_CACHEMOUNT)/xdg-cache
-else
-	_RELEASE_DOCKER_CACHEMOUNT :=
-.PHONY: release-docker-mkcachemount
-release-docker-mkcachemount:
-	# nothing to do
-endif

 ##################### PRODUCING A RELEASE #############
-.PHONY: release wrapup-and-checksum check-git-clean sign clean ensure-release-toolchain
+.PHONY: release wrapup-and-checksum check-git-clean sign clean

-ensure-release-toolchain:
-	# ensure the toolchain is actually the one we expect
-	test $(RELEASE_GOVERSION) = "$$($(GO_ENV_VARS) $(GO) env GOVERSION)"
-
-release: ensure-release-toolchain
-	$(MAKE) _run_make_foreach_target_tuple RUN_MAKE_FOREACH_TARGET_TUPLE_ARG="vet"
-	$(MAKE) _run_make_foreach_target_tuple RUN_MAKE_FOREACH_TARGET_TUPLE_ARG="lint"
-	$(MAKE) _run_make_foreach_target_tuple RUN_MAKE_FOREACH_TARGET_TUPLE_ARG="zrepl-bin"
-	$(MAKE) _run_make_foreach_target_tuple RUN_MAKE_FOREACH_TARGET_TUPLE_ARG="test-platform-bin"
+release: clean
+	# no cross-platform support for target test
+	$(MAKE) test-go
+	$(MAKE) bins-all
 	$(MAKE) noarch
+	$(MAKE) wrapup-and-checksum
+	$(MAKE) check-git-clean
+ifeq (SIGN, 1)
+	$(MAKE) sign
+endif
+	@echo "ZREPL RELEASE ARTIFACTS AVAILABLE IN artifacts/release"

-release-docker: $(ARTIFACTDIR) release-docker-mkcachemount
-	sed 's/FROM.*!SUBSTITUTED_BY_MAKEFILE/FROM $(RELEASE_DOCKER_BASEIMAGE)/' build/build.Dockerfile > $(ARTIFACTDIR)/build.Dockerfile
-	docker build -t zrepl_release --pull -f $(ARTIFACTDIR)/build.Dockerfile .
-	docker run --rm -i \
-		$(_RELEASE_DOCKER_CACHEMOUNT) \
-		-v $(CURDIR):/src -u $$(id -u):$$(id -g) \
+release-docker: $(ARTIFACTDIR)
+	sed 's/FROM.*!SUBSTITUTED_BY_MAKEFILE/FROM $(RELEASE_DOCKER_BASEIMAGE)/' build.Dockerfile > artifacts/release-docker.Dockerfile
+	docker build -t zrepl_release --pull -f artifacts/release-docker.Dockerfile .
+	docker run --rm -i -v $(CURDIR):/src -u $$(id -u):$$(id -g) \
 		zrepl_release \
-		make release \
-			GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
-			ZREPL_VERSION=$(ZREPL_VERSION) ZREPL_PACKAGE_RELEASE=$(ZREPL_PACKAGE_RELEASE) \
-			RELEASE_GOVERSION=$(RELEASE_GOVERSION)
+		make release GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM)

 debs-docker:
 	$(MAKE) _debs_or_rpms_docker _DEB_OR_RPM=deb
@@ -96,14 +81,9 @@ rpm: $(ARTIFACTDIR) # artifacts/_zrepl.zsh_completion artifacts/bash_completion
 	$(eval _ZREPL_RPM_TOPDIR_ABS := $(CURDIR)/$(ARTIFACTDIR)/rpmbuild)
 	rm -rf "$(_ZREPL_RPM_TOPDIR_ABS)"
 	mkdir "$(_ZREPL_RPM_TOPDIR_ABS)"
-	for d in BUILD BUILDROOT RPMS SOURCES SPECS SRPMS; do \
-		mkdir -p "$(_ZREPL_RPM_TOPDIR_ABS)/$$d"; \
-	done
-	sed \
-		-e "s/^Version:.*/Version:          $(_ZREPL_RPM_VERSION)/g" \
-		-e "s/^Release:.*/Release:          $(ZREPL_PACKAGE_RELEASE)/g" \
-	    packaging/rpm/zrepl.spec \
-		>  $(_ZREPL_RPM_TOPDIR_ABS)/SPECS/zrepl.spec
+	mkdir -p "$(_ZREPL_RPM_TOPDIR_ABS)"/{SPECS,RPMS,BUILD,BUILDROOT}
+	sed "s/^Version:.*/Version:          $(_ZREPL_RPM_VERSION)/g" \
+	    packaging/rpm/zrepl.spec >  $(_ZREPL_RPM_TOPDIR_ABS)/SPECS/zrepl.spec

 	# see /usr/lib/rpm/platform
 ifeq ($(GOARCH),amd64)
@@ -130,16 +110,13 @@ rpm-docker:
 	docker build -t zrepl_rpm_pkg --pull -f packaging/rpm/Dockerfile .
 	docker run --rm -i -v $(CURDIR):/build/src -u $$(id -u):$$(id -g) \
 		zrepl_rpm_pkg \
-		make rpm \
-			GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
-			ZREPL_VERSION=$(ZREPL_VERSION) ZREPL_PACKAGE_RELEASE=$(ZREPL_PACKAGE_RELEASE)
-
+		make rpm GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM)

 deb: $(ARTIFACTDIR) # artifacts/_zrepl.zsh_completion artifacts/bash_completion docs zrepl-bin

 	cp packaging/deb/debian/changelog.template packaging/deb/debian/changelog
 	sed -i 's/DATE_DASH_R_OUTPUT/$(shell date -R)/' packaging/deb/debian/changelog
-	VERSION="$(subst -,.,$(_ZREPL_VERSION))-$(ZREPL_PACKAGE_RELEASE)"; \
+	VERSION="$(subst -,.,$(_ZREPL_VERSION))"; \
 		export VERSION="$${VERSION#v}"; \
 		sed -i 's/VERSION/'"$$VERSION"'/' packaging/deb/debian/changelog

@@ -157,36 +134,28 @@ endif

 deb-docker:
 	docker build -t zrepl_debian_pkg --pull -f packaging/deb/Dockerfile .
-	# Use a small open file limit to make fakeroot work. If we don't
-	# specify it, docker daemon will use its file limit. I don't know
-	# what changed (Docker, its systemd service, its Go version). But I
-	# observed fakeroot iterating close(i) up to i > 1000000, which costs
-	# a good amount of CPU time and makes the build slow.
 	docker run --rm -i -v $(CURDIR):/build/src -u $$(id -u):$$(id -g) \
-		--ulimit nofile=1024:1024 \
 		zrepl_debian_pkg \
-		make deb \
-			GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
-			ZREPL_VERSION=$(ZREPL_VERSION) ZREPL_PACKAGE_RELEASE=$(ZREPL_PACKAGE_RELEASE)
+		make deb GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM)

-# expects `release`, `deb` & `rpm` targets to have run before
+# expects `release` target to have run before
 NOARCH_TARBALL := $(ARTIFACTDIR)/zrepl-noarch.tar
 wrapup-and-checksum:
 	rm -f $(NOARCH_TARBALL)
 	tar --mtime='1970-01-01' --sort=name \
 		--transform 's/$(ARTIFACTDIR)/zrepl-$(_ZREPL_VERSION)-noarch/' \
 		--transform 's#dist#zrepl-$(_ZREPL_VERSION)-noarch/dist#' \
-		--transform 's#internal/config/samples#zrepl-$(_ZREPL_VERSION)-noarch/config#' \
+		--transform 's#config/samples#zrepl-$(_ZREPL_VERSION)-noarch/config#' \
 		-acf $(NOARCH_TARBALL) \
 		$(ARTIFACTDIR)/docs/html \
 		$(ARTIFACTDIR)/bash_completion \
 		$(ARTIFACTDIR)/_zrepl.zsh_completion \
 		$(ARTIFACTDIR)/go_env.txt \
 		dist \
-		internal/config/samples
+		config/samples
 	rm -rf "$(ARTIFACTDIR)/release"
 	mkdir -p "$(ARTIFACTDIR)/release"
-	cp -l $(ARTIFACTDIR)/zrepl* \
+	cp -l $(ARTIFACTDIR)/zrepl-* \
 		$(ARTIFACTDIR)/platformtest-* \
 		"$(ARTIFACTDIR)/release"
 	cd "$(ARTIFACTDIR)/release" && sha512sum $$(ls | sort) > sha512sum.txt
@@ -206,45 +175,42 @@ check-git-clean:

 tag-release:
 	test -n "$(ZREPL_TAG_VERSION)" || exit 1
-	git tag -u '328A6627FA98061D!' -m "$(ZREPL_TAG_VERSION)" "$(ZREPL_TAG_VERSION)"
+	git tag -u E27CA5FC -m "$(ZREPL_TAG_VERSION)" "$(ZREPL_TAG_VERSION)"

 sign:
-	gpg -u '328A6627FA98061D!' \
+	gpg -u "89BC 5D89 C845 568B F578  B306 CDBD 8EC8 E27C A5FC" \
 		--armor \
 		--detach-sign $(ARTIFACTDIR)/release/sha512sum.txt

 clean: docs-clean
 	rm -rf "$(ARTIFACTDIR)"

-download-circleci-release:
-	rm -rf "$(ARTIFACTDIR)"
-	mkdir -p "$(ARTIFACTDIR)/release"
-	python3 .circleci/download_artifacts.py --prefix 'artifacts/release/' "$(BUILD_NUM)" "$(ARTIFACTDIR)/release"
+##################### BINARIES #####################
+.PHONY: bins-all lint test-go test-platform cover-merge cover-html vet zrepl-bin test-platform-bin generate-platform-test-list

-##################### MULTI-ARCH HELPERS #####################
-
-_run_make_foreach_target_tuple:
-	if [ "$(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG)" = "" ]; then \
-		echo "RUN_MAKE_FOREACH_TARGET_TUPLE_ARG must be set"; \
-		exit 1; \
-	fi
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=freebsd   GOARCH=amd64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=freebsd   GOARCH=386
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=freebsd   GOARCH=arm	  GOARM=7
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=freebsd   GOARCH=arm64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=linux     GOARCH=amd64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=linux     GOARCH=arm64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=linux     GOARCH=arm     GOARM=7
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=linux     GOARCH=386
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=darwin    GOARCH=amd64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=solaris   GOARCH=amd64
-	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=illumos   GOARCH=amd64
-
-##################### REGULAR TARGETS #####################
-.PHONY: lint test-go test-platform cover-merge cover-html vet zrepl-bin test-platform-bin
+BINS_ALL_TARGETS := zrepl-bin test-platform-bin vet lint
+GO_SUPPORTS_ILLUMOS := $(shell $(GO) version | gawk -F '.' '/^go version /{split($$0, comps, " "); split(comps[3], v, "."); if (v[1] == "go1" && v[2] >= 13) { print "illumos"; } else { print "noillumos"; }}')
+bins-all:
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=freebsd   GOARCH=amd64
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=freebsd   GOARCH=386
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=freebsd   GOARCH=arm	  GOARM=7
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=freebsd   GOARCH=arm64
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=linux     GOARCH=amd64
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=linux     GOARCH=arm64
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=linux     GOARCH=arm     GOARM=7
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=linux     GOARCH=386
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=darwin    GOARCH=amd64
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=solaris   GOARCH=amd64
+ifeq ($(GO_SUPPORTS_ILLUMOS), illumos)
+	$(MAKE) $(BINS_ALL_TARGETS) GOOS=illumos   GOARCH=amd64
+else ifeq ($(GO_SUPPORTS_ILLUMOS), noillumos)
+	@echo "SKIPPING ILLUMOS BUILD BECAUSE GO VERSION DOESN'T SUPPORT IT"
+else
+	@echo "CANNOT DETERMINE WHETHER GO VERSION SUPPORTS GOOS=illumos"; exit 1
+endif

 lint:
-	$(GO_ENV_VARS) $(GO) tool golangci-lint run ./...
+	$(GO_ENV_VARS) $(GOLANGCI_LINT) run ./...

 vet:
 	$(GO_ENV_VARS) $(GO) vet $(GO_BUILDFLAGS) ./...
@@ -265,6 +231,9 @@ endif
 zrepl-bin:
 	$(GO_BUILD) -o "$(ARTIFACTDIR)/zrepl-$(ZREPL_TARGET_TUPLE)"

+generate-platform-test-list:
+	$(GO_BUILD) -o $(ARTIFACTDIR)/generate-platform-test-list ./platformtest/tests/gen
+
 COVER_PLATFORM_BIN_PATH := $(ARTIFACTDIR)/platformtest-cover-$(ZREPL_TARGET_TUPLE)
 cover-platform-bin:
 	$(GO_ENV_VARS) $(GO) test $(GO_BUILDFLAGS) \
@@ -281,7 +250,7 @@ cover-platform:

 TEST_PLATFORM_BIN_PATH := $(ARTIFACTDIR)/platformtest-$(ZREPL_TARGET_TUPLE)
 test-platform-bin:
-	$(GO_BUILD) -o "$(TEST_PLATFORM_BIN_PATH)" ./internal/platformtest/harness
+	$(GO_BUILD) -o "$(TEST_PLATFORM_BIN_PATH)" ./platformtest/harness
 test-platform:
 	export _TEST_PLATFORM_CMD="\"$(TEST_PLATFORM_BIN_PATH)\""; \
 		$(MAKE) _test-or-cover-platform-impl
@@ -298,7 +267,7 @@ ifndef _TEST_PLATFORM_CMD
 endif
 	rm -f "$(ZREPL_PLATFORMTEST_ZFS_LOG)"
 	rm -f "$(ARTIFACTDIR)/platformtest.cover"
-	internal/platformtest/logmockzfs/logzfsenv "$(ZREPL_PLATFORMTEST_ZFS_LOG)" `which zfs` \
+	platformtest/logmockzfs/logzfsenv "$(ZREPL_PLATFORMTEST_ZFS_LOG)" `which zfs` \
 		$(_TEST_PLATFORM_CMD) \
 		-poolname "$(ZREPL_PLATFORMTEST_POOLNAME)" \
 		-imagepath "$(ZREPL_PLATFORMTEST_IMAGEPATH)" \
@@ -320,38 +289,23 @@ cover-full:

 ##################### DEV TARGETS #####################
 # not part of the build, must do that manually
-.PHONY: generate format
+.PHONY: generate formatcheck format

-build/install:
-	rm -rf build/install.tmp
-	mkdir build/install.tmp
+generate: generate-platform-test-list
+	protoc -I=replication/logic/pdu --go_out=replication/logic/pdu --go-grpc_out=replication/logic/pdu replication/logic/pdu/pdu.proto
+	protoc -I=rpc/grpcclientidentity/example --go_out=rpc/grpcclientidentity/example/pdu --go-grpc_out=rpc/grpcclientidentity/example/pdu rpc/grpcclientidentity/example/grpcauth.proto
+	$(GO_ENV_VARS) $(GO) generate $(GO_BUILDFLAGS) -x ./...

-	-echo "installing protoc"
-	mkdir build/install.tmp/protoc
-	bash -x build/get_protoc.bash build/install.tmp/protoc
+GOIMPORTS := goimports -srcdir . -local 'github.com/zrepl/zrepl'
+FINDSRCFILES := find . -type f -name '*.go' -not -path "./vendor/*" -not -name '*.pb.go' -not -name '*_enumer.go'

-	-echo "installing protoc plugins to GOBIN"
-	$(GO) install tool
-
-	mv build/install.tmp build/install
-
-
-generate: build/install
-	# protoc plugins are installed via 'go install tool' in build/install target
-	build/install/protoc/bin/protoc \
-		-I=internal/replication/logic/pdu \
-		--go_out=internal/replication/logic/pdu --go-grpc_out=internal/replication/logic/pdu \
-		internal/replication/logic/pdu/pdu.proto
-	build/install/protoc/bin/protoc \
-		-I=internal/rpc/grpcclientidentity/example \
-		--go_out=internal/rpc/grpcclientidentity/example/pdu --go-grpc_out=internal/rpc/grpcclientidentity/example/pdu \
-		internal/rpc/grpcclientidentity/example/grpcauth.proto
-	$(GO) generate $(GO_BUILDFLAGS) -x ./...
-
-GOIMPORTS := $(GO) tool goimports -srcdir . -local 'github.com/zrepl/zrepl'
+formatcheck:
+	@# goimports doesn't have a knob to exit with non-zero status code if formatting is needed
+	@# see https://go-review.googlesource.com/c/tools/+/237378
+	@ affectedfiles=$$($(GOIMPORTS) -l $(shell $(FINDSRCFILES)) | tee /dev/stderr | wc -l); test "$$affectedfiles" = 0

 format:
-	@ $(GO) tool goimports -w -local 'github.com/zrepl/zrepl' $$(find . -type f -name '*.go' -not -path "./vendor/*" -not -name '*.pb.go' -not -name '*_enumer.go')
+	@ $(GOIMPORTS) -w -d $(shell  $(FINDSRCFILES))

 ##################### NOARCH #####################
 .PHONY: noarch $(ARTIFACTDIR)/bash_completion $(ARTIFACTDIR)/_zrepl.zsh_completion $(ARTIFACTDIR)/go_env.txt docs docs-clean
@@ -26,40 +26,24 @@ zrepl is a one-stop ZFS backup & replication solution.
   If so, think of an expressive configuration example.
 2. Think of at least one use case that generalizes from your concrete application.
 3. Open an issue on GitHub with example conf & use case attached.
-4. **Optional**: [Contact Christian Schwarz](https://cschwarz.com) for contract work.
+4. **Optional**: [Post a bounty](https://www.bountysource.com/teams/zrepl) on the issue, or [contact Christian Schwarz](https://cschwarz.com) for contract work.

 The above does not apply if you already implemented everything.
 Check out the *Coding Workflow* section below for details.

-## Development
+## Building, Releasing, Downstream-Packaging
+
+This section provides an overview of the zrepl build & release process.
+Check out `docs/installation/compile-from-source.rst` for build-from-source instructions.
+
+### Overview

 zrepl is written in [Go](https://golang.org) and uses [Go modules](https://github.com/golang/go/wiki/Modules) to manage dependencies.
 The documentation is written in [ReStructured Text](http://docutils.sourceforge.net/rst.html) using the [Sphinx](https://www.sphinx-doc.org) framework.

-### Building
-
-#### Go Code
-
-Dependencies:
-
-* Go 1.22 or newer
-* GNU Make
-* Git
-* wget (`make generate`)
-* unzip (`make generate`)
-
-Some Go code is **generated**, and generated code is committed to the source tree.
-Therefore, building does not require having code generation tools set up.
-When making changes that require code to be (re-)generated, run `make generate`.
-I downloads and installs pinned versions of the code generation tools into `./build/install`.
-There is a CI check that ensures Git state is clean, i.e., code generation has been done by a PR and is deterministic.
-
-#### Docs
-
-Set up a Python environment that has `docs/requirements.txt` installed via `pip`.
-Use a  [venv](https://docs.python.org/3/library/venv.html) to avoid global state.
-
-### Testing
+Install **build dependencies** using  `./lazy.sh devsetup`.
+`lazy.sh` uses `python3-pip` to fetch the build dependencies for the docs - you might want to use a [venv](https://docs.python.org/3/library/venv.html).
+If you just want to install the Go dependencies, run `./lazy.sh godep`.

 The **test suite** is split into pure **Go tests** (`make test-go`) and **platform tests** that interact with ZFS and thus generally **require root privileges** (`sudo make test-platform`).
 Platform tests run on their own pool with the name `zreplplatformtest`, which is created using the file vdev in `/tmp`.
@@ -67,28 +51,33 @@ Platform tests run on their own pool with the name `zreplplatformtest`, which is
 For a full **code coverage** profile, run `make test-go COVER=1 && sudo make test-platform && make cover-merge`.
 An HTML report can be generated using `make cover-html`.

-### Circle CI
+**Code generation** is triggered by `make generate`. Generated code is committed to the source tree.

-We use CircleCI for automated build & test pre- and post-merge.
+### Build & Release Process

+**The `Makefile` is catering to the needs of developers & CI, not distro packagers**.
+It provides phony targets for
+* local development (building, running tests, etc)
+* building a release in Docker (used by the CI & release management)
+* building .deb and .rpm packages out of the release artifacts.
+
+**Build tooling & dependencies** are documented as code in `lazy.sh`.
+Go dependencies are then fetched by the go command and pip dependencies are pinned through a `requirements.txt`.
+
+**We use CircleCI for continuous integration**.
 There are two workflows:

 * `ci` runs for every commit / branch / tag pushed to GitHub.
  It is supposed to run very fast (<5min and provides quick feedback to developers).
  It runs formatting checks, lints and tests on the most important OSes / architectures.
+  Artifacts are published to minio.cschwarz.com (see GitHub Commit Status).

 * `release` runs
  * on manual triggers through the CircleCI API (in order to produce a release)
  * periodically on `master`
+  Artifacts are published to minio.cschwarz.com (see GitHub Commit Status).

-Artifacts are stored in CircleCI.
-
-### Releasing
-
-All zrepl releases are git-tagged and then published as a GitHub Release.
-There is a git tag for each zrepl release, usually `vMAJOR.MINOR.0`.
-We don't move git tags once the release has been published.
-
+**Releases** are issued via Git tags + GitHub Releases feature.
 The procedure to issue a release is as follows:
 * Issue the source release:
  * Git tag the release on the `master` branch.
@@ -99,34 +88,14 @@ The procedure to issue a release is as follows:
  * Download the artifacts to the release manager's machine.
  * Create a GitHub release, edit the changelog, upload all the release artifacts, including .rpm and .deb files.
  * Issue the GitHub release.
-  * Add the .rpm and .deb files to the official zrepl repos.
-    * Code for management of these repos: https://github.com/zrepl/package-repo-ops (private repo at this time)
+  * Add the .rpm and .deb files to the official zrepl repos, publish those.

-#### Patch releases, Go toolchain updates, APT/RPM Package rebuilds
+**Official binary releases are not re-built when Go receives an update. If the Go update is critical to zrepl (e.g. a Go security update that affects zrepl), we'd issue a new source release**.
+The rationale for this is that whereas distros provide a mechanism for this (`$zrepl_source_release-$distro_package_revision`), GitHub Releases doesn't which means we'd need to update the existing GitHub release's assets, which nobody would notice (no RSS feed updates, etc.).
+Downstream packagers can read the changelog to determine whether they want to push that minor release into their distro or simply skip it.

-`vMAJOR.MINOR.0` is typically a tagged commit on `master`, because development velocity isn't high
-and thus release branches for stabilization aren't necessary.
+### Additional Notes to Distro Package Maintainers

-Occasionally though there is a need for patch changes to a release, e.g.
- security issue in a dependency
- Go toolchain update (e.g. security issue in standard library)
-
-The procedure for this is the following
- create a branch off the release tag we need to patch, named `releases/MAJOR.MINOR.X`
- that branch will never be merged into `master`, it'll be a dead-end for this specific patch
- make changes in that branch
- make the final commit that bumps version numbers
- create the git tag
- follow general procedure for publishing the release (previous sectino
-
-For Go toolchain updates and package rebuilds with no source code changes, leverage the APT/RPM package revision field.
-Control via the `ZREPL_PACKAGE_RELEASE` Makefile variable, see `origin/releases/0.6.1-2` for an example.
-
-
-
-## Notes to Distro Package Maintainers
-
-* The `Makefile` in this project is not suitable for builds in distros.
 * Run the platform tests (Docs -> Usage -> Platform Tests) **on a test system** to validate that zrepl's abstractions on top of ZFS work with the system ZFS.
 * Ship a default config that adheres to your distro's `hier` and logging system.
 * Ship a service manager file and _please_ try to upstream it to this repository.
@@ -136,3 +105,31 @@ Control via the `ZREPL_PACKAGE_RELEASE` Makefile variable, see `origin/releases/
  This is how `zrepl version` knows what version number to show.
  Your build system should set the `ldFlags` flags appropriately and add a prefix or suffix that indicates that the given zrepl binary is a distro build, not an official one.
 * Make sure you are informed about new zrepl versions, e.g. by subscribing to GitHub's release RSS feed.
+
+
+## Contributing Code
+
+* Open an issue when starting to hack on a new feature
+* Commits should reference the issue they are related to
+* Docs improvements not documenting new features do not require an issue.
+
+### Breaking Changes
+
+Backward-incompatible changes must be documented in the git commit message and are listed in `docs/changelog.rst`.
+
+### Glossary & Naming Inconsistencies
+
+In ZFS, *dataset* refers to the objects *filesystem*, *ZVOL* and *snapshot*. <br />
+However, we need a word for *filesystem* & *ZVOL* but not a snapshot, bookmark, etc.
+
+Toward the user, the following terminology is used:
+
+* **filesystem**: a ZFS filesystem or a ZVOL
+* **filesystem version**: a ZFS snapshot or a bookmark
+
+Sadly, the zrepl implementation is inconsistent in its use of these words:
+variables and types are often named *dataset* when they in fact refer to a *filesystem*.
+
+There will not be a big refactoring (an attempt was made, but it's destroying too much history without much gain).
+
+However, new contributions & patches should fix naming without further notice in the commit message.
@@ -0,0 +1,30 @@
+FROM !SUBSTITUTED_BY_MAKEFILE
+
+RUN apt-get update && apt-get install -y \
+    python3-pip \
+    unzip \
+    gawk
+
+ADD build.installprotoc.bash ./
+RUN bash build.installprotoc.bash
+
+ADD lazy.sh /tmp/lazy.sh
+ADD docs/requirements.txt /tmp/requirements.txt
+ENV ZREPL_LAZY_DOCS_REQPATH=/tmp/requirements.txt
+RUN /tmp/lazy.sh docdep
+
+# prepare volume mount of git checkout to /zrepl
+RUN mkdir -p /src/github.com/zrepl/zrepl
+RUN mkdir -p /.cache && chmod -R 0777 /.cache
+
+# $GOPATH is /go
+# Go 1.12 doesn't use modules within GOPATH, but 1.13 and later do
+# => store source outside of GOPATH
+WORKDIR /src
+
+# Install build tools (e.g. protobuf generator, stringer) into $GOPATH/bin
+ADD build/ /tmp/build
+RUN /tmp/lazy.sh godep
+
+RUN chmod -R 0777 /go
+
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+set -x
+
+MACH=$(uname -m)
+MACH="${MACH/aarch64/aarch_64}"
+
+VERSION=3.6.1
+FILENAME=protoc-"$VERSION"-linux-"$MACH".zip
+
+if [ -e "$FILENAME" ]; then
+    echo "$FILENAME" already exists 1>&2
+    exit 1
+fi
+
+wget https://github.com/protocolbuffers/protobuf/releases/download/v"$VERSION"/"$FILENAME"
+
+stat "$FILENAME"
+
+sha256sum -c --ignore-missing <<EOF
+6003de742ea3fcf703cfec1cd4a3380fd143081a2eb0e559065563496af27807  protoc-3.6.1-linux-x86_64.zip
+af8e5aaaf39ddec62ec8dd2be1b8d9602c6da66564883a16393ade5f71170922  protoc-3.6.1-linux-aarch_64.zip
+EOF
+
+unzip -d /usr "$FILENAME"
@@ -1 +0,0 @@
-install/
@@ -1,22 +0,0 @@
-FROM !SUBSTITUTED_BY_MAKEFILE
-
-RUN apt-get update && apt-get install -y \
-    python3-pip \
-    python3-venv \
-    unzip \
-    gawk
-
-# setup venv for docs
-ENV VIRTUAL_ENV=/opt/venv
-RUN python3 -m venv $VIRTUAL_ENV
-ENV PATH="$VIRTUAL_ENV/bin:$PATH"
-ADD docs/requirements.txt /tmp/requirements.txt
-RUN pip3 install -r /tmp/requirements.txt
-
-# Go toolchain uses xdg-cache
-RUN mkdir -p /.cache && chmod -R 0777 /.cache
-
-# Go devtools are managed by Makefile
-
-WORKDIR /src
-
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-set -x
-
-cd "$1"
-
-MACH=$(uname -m)
-MACH="${MACH/aarch64/aarch_64}"
-
-VERSION=28.0
-FILENAME=protoc-"$VERSION"-linux-"$MACH".zip
-
-if [ -e "$FILENAME" ]; then
-    echo "$FILENAME" already exists 1>&2
-    exit 1
-fi
-
-wget --continue https://github.com/protocolbuffers/protobuf/releases/download/v"$VERSION"/"$FILENAME"
-
-stat "$FILENAME"
-
-sha256sum -c --ignore-missing <<EOF
-d622619dcbfb5ecb281cfb92c1a74d6a0f42e752d9a2774b197f475f7ab1c8c4  protoc-28.0-linux-aarch_64.zip
-b2e187c8b9f2d97cd3ecae4926d1bb2cbebe3ab768e7c987cbc86bb17f319358  protoc-28.0-linux-x86_64.zip
-EOF
-
-unzip -d . "$FILENAME"
@@ -0,0 +1,16 @@
+module github.com/zrepl/zrepl/build
+
+go 1.12
+
+require (
+	github.com/alvaroloes/enumer v1.1.1
+	github.com/golangci/golangci-lint v1.35.2
+	github.com/golangci/misspell v0.3.4 // indirect
+	github.com/golangci/revgrep v0.0.0-20180812185044-276a5c0a1039 // indirect
+	github.com/spf13/afero v1.2.2 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/wadey/gocovmerge v0.0.0-20160331181800-b5bfa59ec0ad
+	golang.org/x/tools v0.0.0-20210105210202-9ed45478a130
+	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0 // indirect
+	google.golang.org/protobuf v1.25.0
+)
@@ -0,0 +1,15 @@
+//go:build tools
+// +build tools
+
+package main
+
+// the lines are parsed by lazy.sh, do not edit
+import (
+	_ "github.com/alvaroloes/enumer"
+	_ "github.com/golangci/golangci-lint/cmd/golangci-lint"
+	_ "github.com/wadey/gocovmerge"
+	_ "golang.org/x/tools/cmd/goimports"
+	_ "golang.org/x/tools/cmd/stringer"
+	_ "google.golang.org/grpc/cmd/protoc-gen-go-grpc"
+	_ "google.golang.org/protobuf/cmd/protoc-gen-go"
+)
@@ -8,9 +8,9 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/daemon/logging/trace"
+	"github.com/zrepl/zrepl/daemon/logging/trace"

-	"github.com/zrepl/zrepl/internal/config"
+	"github.com/zrepl/zrepl/config"
 )

 var rootArgs struct {
@@ -11,11 +11,11 @@ import (
 	"github.com/spf13/pflag"
 	"github.com/zrepl/yaml-config"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/job"
-	"github.com/zrepl/zrepl/internal/daemon/logging"
-	"github.com/zrepl/zrepl/internal/logger"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/job"
+	"github.com/zrepl/zrepl/daemon/logging"
+	"github.com/zrepl/zrepl/logger"
 )

 var configcheckArgs struct {
@@ -9,12 +9,12 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/daemon/job"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/daemon/job"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/zfs"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
 )

 var (
@@ -1,6 +1,6 @@
 package client

-import "github.com/zrepl/zrepl/internal/cli"
+import "github.com/zrepl/zrepl/cli"

 var PprofCmd = &cli.Subcommand{
 	Use: "pprof",
@@ -8,7 +8,7 @@ import (

 	"golang.org/x/net/websocket"

-	"github.com/zrepl/zrepl/internal/cli"
+	"github.com/zrepl/zrepl/cli"
 )

 var pprofActivityTraceCmd = &cli.Subcommand{
@@ -6,9 +6,9 @@ import (
 	"log"
 	"os"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon"
 )

 var pprofListenCmd struct {
@@ -5,9 +5,9 @@ import (

 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon"
 )

 var SignalCmd = &cli.Subcommand{
@@ -10,7 +10,7 @@ import (

 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/daemon"
+	"github.com/zrepl/zrepl/daemon"
 )

 type Client struct {
@@ -9,11 +9,11 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/client/status/client"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon"
-	"github.com/zrepl/zrepl/internal/util/choices"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/client/status/client"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon"
+	"github.com/zrepl/zrepl/util/choices"
 )

 type Client interface {
@@ -5,11 +5,11 @@ import (
 	"os"
 	"strings"

-	"github.com/gdamore/tcell/v2"
+	"github.com/gdamore/tcell"
 	"github.com/mattn/go-isatty"
 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/client/status/viewmodel"
+	"github.com/zrepl/zrepl/client/status/viewmodel"
 )

 func dump(c Client, job string) error {
@@ -8,9 +8,9 @@ import (
 	"time"

 	"github.com/gdamore/tcell/v2"
-	"github.com/rivo/tview"
+	tview "gitlab.com/tslocum/cview"

-	"github.com/zrepl/zrepl/internal/client/status/viewmodel"
+	"github.com/zrepl/zrepl/client/status/viewmodel"
 )

 func interactive(c Client, flag statusFlags) error {
@@ -29,6 +29,7 @@ func interactive(c Client, flag statusFlags) error {
 	jobMenuRoot.SetSelectable(true)
 	jobMenu.SetRoot(jobMenuRoot)
 	jobMenu.SetCurrentNode(jobMenuRoot)
+	jobMenu.SetSelectedTextColor(tcell.ColorGreen)
 	jobTextDetail := tview.NewTextView()
 	jobTextDetail.SetWrap(false)

@@ -109,8 +110,10 @@ func interactive(c Client, flag statusFlags) error {
 			}
 			app.SetRoot(toolbarSplit, true)
 			app.SetFocus(preModalFocus)
+			app.Draw()
 		})
 		app.SetRoot(m, true)
+		app.Draw()
 	}

 	app.SetRoot(toolbarSplit, true)
@@ -167,14 +170,12 @@ func interactive(c Client, flag statusFlags) error {
 			redrawJobsList = true
 		}
 		if redrawJobsList {
-			selectedTextStyle := tcell.StyleDefault.Bold(true)
 			selectedJobN = nil
 			children := make([]*tview.TreeNode, len(jobs))
 			for i := range jobs {
 				jobN := tview.NewTreeNode(jobs[i].JobTreeTitle())
 				jobN.SetReference(jobs[i])
 				jobN.SetSelectable(true)
-				jobN.SetSelectedTextStyle(selectedTextStyle)
 				children[i] = jobN
 				jobN.SetSelectedFunc(func() {
 					viewmodelupdate(func(p *viewmodel.Params) {
@@ -186,7 +187,6 @@ func interactive(c Client, flag statusFlags) error {
 				}
 			}
 			jobMenuRoot.SetChildren(children)
-			jobMenuRoot.SetSelectedTextStyle(selectedTextStyle)
 		}

 		if selectedJobN != nil && jobMenu.GetCurrentNode() != selectedJobN {
@@ -207,6 +207,9 @@ func interactive(c Client, flag statusFlags) error {
 		bottombar.ResizeItem(bottombarDateView, len(bottombardatestring), 0)

 		bottomBarStatus.SetText(m.BottomBarStatus())
+
+		app.Draw()
+
 	}

 	go func() {
@@ -249,7 +252,6 @@ func interactive(c Client, flag statusFlags) error {

 	app.SetInputCapture(func(e *tcell.EventKey) *tcell.EventKey {
 		if e.Key() == tcell.KeyTab {
-			// TODO: only if there's no modal showing (long-time bug in zrepl status)
 			tabbableCycle()
 			return nil
 		}
@@ -282,8 +284,9 @@ func interactive(c Client, flag statusFlags) error {
 			signals := []string{"wakeup", "reset"}
 			clientFuncs := []func(job string) error{c.SignalWakeup, c.SignalReset}
 			sigMod := tview.NewModal()
+			sigMod.SetBackgroundColor(tcell.ColorDefault)
 			sigMod.SetBorder(true)
-			sigMod.SetButtonActivatedStyle(tcell.StyleDefault.Bold(true).Reverse(true))
+			sigMod.GetForm().SetButtonTextColorFocused(tcell.ColorGreen)
 			sigMod.AddButtons(signals)
 			sigMod.SetText(fmt.Sprintf("Send a signal to job %q", job.Name()))
 			showModal(sigMod, func(idx int, _ string) {
@@ -10,9 +10,9 @@ import (
 	"github.com/gdamore/tcell/v2"
 	"github.com/mattn/go-isatty"
 	"github.com/pkg/errors"
-	"github.com/rivo/tview"
+	tview "gitlab.com/tslocum/cview"

-	"github.com/zrepl/zrepl/internal/client/status/viewmodel"
+	"github.com/zrepl/zrepl/client/status/viewmodel"
 )

 func legacy(c Client, flag statusFlags) error {
@@ -28,7 +28,7 @@ func legacy(c Client, flag statusFlags) error {
 	textView := tview.NewTextView()
 	textView.SetWrap(true)
 	textView.SetScrollable(true) // so that it allows us to set scroll position
-	// textView.SetScrollBarVisibility(tview.ScrollBarNever)
+	textView.SetScrollBarVisibility(tview.ScrollBarNever)

 	app.SetRoot(textView, true)

@@ -10,12 +10,12 @@ import (
 	"github.com/go-playground/validator/v10"
 	yaml "github.com/zrepl/yaml-config"

-	"github.com/zrepl/zrepl/internal/client/status/viewmodel/stringbuilder"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/job"
-	"github.com/zrepl/zrepl/internal/daemon/pruner"
-	"github.com/zrepl/zrepl/internal/daemon/snapper"
-	"github.com/zrepl/zrepl/internal/replication/report"
+	"github.com/zrepl/zrepl/client/status/viewmodel/stringbuilder"
+	"github.com/zrepl/zrepl/daemon"
+	"github.com/zrepl/zrepl/daemon/job"
+	"github.com/zrepl/zrepl/daemon/pruner"
+	"github.com/zrepl/zrepl/daemon/snapper"
+	"github.com/zrepl/zrepl/replication/report"
 )

 type M struct {
@@ -85,7 +85,7 @@ func (m *M) Update(p Params) {
 	// filter out internal jobs
 	var jobsList []*Job
 	for _, j := range m.jobsList {
-		if config.IsInternalJobName(j.name) {
+		if daemon.IsInternalJobName(j.name) {
 			continue
 		}
 		jobsList = append(jobsList, j)
@@ -374,15 +374,13 @@ func renderReplicationReport(t *stringbuilder.B, rep *report.Report, history *by
 			eta = time.Duration((float64(expected)-float64(replicated))/float64(rate)) * time.Second
 		}

-		if !latest.State.IsTerminal() {
-			t.Write("Progress: ")
-			t.DrawBar(50, replicated, expected, changeCount)
-			t.Write(fmt.Sprintf(" %s / %s @ %s/s", ByteCountBinaryUint(replicated), ByteCountBinaryUint(expected), ByteCountBinary(rate)))
-			if eta != 0 {
-				t.Write(fmt.Sprintf(" (%s remaining)", humanizeDuration(eta)))
-			}
-			t.Newline()
+		t.Write("Progress: ")
+		t.DrawBar(50, replicated, expected, changeCount)
+		t.Write(fmt.Sprintf(" %s / %s @ %s/s", ByteCountBinaryUint(replicated), ByteCountBinaryUint(expected), ByteCountBinary(rate)))
+		if eta != 0 {
+			t.Write(fmt.Sprintf(" (%s remaining)", humanizeDuration(eta)))
 		}
+		t.Newline()
 		if containsInvalidSizeEstimates {
 			t.Write("NOTE: not all steps could be size-estimated, total estimate is likely imprecise!")
 			t.Newline()
@@ -495,17 +493,15 @@ func renderPrunerReport(t *stringbuilder.B, r *pruner.Report, fsfilter FilterFun
 	}

 	// global progress bar
-	if !state.IsTerminal() {
-		progress := int(math.Round(80 * float64(completedDestroyCount) / float64(totalDestroyCount)))
-		t.Write("Progress: ")
-		t.Write("[")
-		t.Write(stringbuilder.Times("=", progress))
-		t.Write(">")
-		t.Write(stringbuilder.Times("-", 80-progress))
-		t.Write("]")
-		t.Printf(" %d/%d snapshots", completedDestroyCount, totalDestroyCount)
-		t.Newline()
-	}
+	progress := int(math.Round(80 * float64(completedDestroyCount) / float64(totalDestroyCount)))
+	t.Write("Progress: ")
+	t.Write("[")
+	t.Write(stringbuilder.Times("=", progress))
+	t.Write(">")
+	t.Write(stringbuilder.Times("-", 80-progress))
+	t.Write("]")
+	t.Printf(" %d/%d snapshots", completedDestroyCount, totalDestroyCount)
+	t.Newline()

 	sort.SliceStable(all, func(i, j int) bool {
 		return strings.Compare(all[i].Filesystem, all[j].Filesystem) == -1
@@ -5,8 +5,8 @@ import (

 	"github.com/problame/go-netssh"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"

 	"context"
 	"errors"
@@ -9,10 +9,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/zfs"
 )

 var TestCmd = &cli.Subcommand{
@@ -7,10 +7,10 @@ import (

 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon"
-	"github.com/zrepl/zrepl/internal/version"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon"
+	"github.com/zrepl/zrepl/version"
 )

 var versionArgs struct {
@@ -7,10 +7,10 @@ import (

 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/zfs"
 )

 var (
@@ -57,7 +57,7 @@ func (f *zabsFilterFlags) registerZabsFilterFlags(s *pflag.FlagSet, verb string)
 	for v := range endpoint.AbstractionTypesAll {
 		variants = append(variants, string(v))
 	}
-	sort.Strings(variants)
+	variants = sort.StringSlice(variants)
 	variantsJoined := strings.Join(variants, "|")
 	s.Var(&f.Types, "type", fmt.Sprintf("only %s holds of the specified type [default: all] [comma-separated list of %s]", verb, variantsJoined))

@@ -1,6 +1,6 @@
 package client

-import "github.com/zrepl/zrepl/internal/cli"
+import "github.com/zrepl/zrepl/cli"

 var zabsCmdCreate = &cli.Subcommand{
 	Use:             "create",
@@ -7,9 +7,9 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/zfs"
 )

 var zabsCreateStepHoldFlags struct {
@@ -11,9 +11,9 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/util/chainlock"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/util/chainlock"
 )

 var zabsListFlags struct {
@@ -10,8 +10,8 @@ import (
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"

-	"github.com/zrepl/zrepl/internal/cli"
-	"github.com/zrepl/zrepl/internal/endpoint"
+	"github.com/zrepl/zrepl/cli"
+	"github.com/zrepl/zrepl/endpoint"
 )

 // shared between release-all and release-step
@@ -2,19 +2,18 @@ package config

 import (
 	"fmt"
+	"io/ioutil"
 	"log/syslog"
 	"os"
-	pathpkg "path"
-	"path/filepath"
-	"strings"
+	"reflect"
 	"time"

 	"github.com/pkg/errors"
 	"github.com/robfig/cron/v3"
 	"github.com/zrepl/yaml-config"

-	"github.com/zrepl/zrepl/internal/util/datasizeunit"
-	zfsprop "github.com/zrepl/zrepl/internal/zfs/property"
+	"github.com/zrepl/zrepl/util/datasizeunit"
+	zfsprop "github.com/zrepl/zrepl/zfs/property"
 )

 type ParseFlags uint
@@ -25,9 +24,8 @@ const (
 )

 type Config struct {
-	Jobs    []JobEnum `yaml:"jobs,optional"`
-	Global  *Global   `yaml:"global,optional,fromdefaults"`
-	Include []string  `yaml:"include,optional"`
+	Jobs   []JobEnum `yaml:"jobs"`
+	Global *Global   `yaml:"global,optional,fromdefaults"`
 }

 func (c *Config) Job(name string) (*JobEnum, error) {
@@ -67,6 +65,7 @@ type ActiveJob struct {
 	Name               string                `yaml:"name"`
 	Connect            ConnectEnum           `yaml:"connect"`
 	Pruning            PruningSenderReceiver `yaml:"pruning"`
+	Debug              JobDebugSettings      `yaml:"debug,optional"`
 	Replication        *Replication          `yaml:"replication,optional,fromdefaults"`
 	ConflictResolution *ConflictResolution   `yaml:"conflict_resolution,optional,fromdefaults"`
 }
@@ -76,15 +75,17 @@ type ConflictResolution struct {
 }

 type PassiveJob struct {
-	Type  string    `yaml:"type"`
-	Name  string    `yaml:"name"`
-	Serve ServeEnum `yaml:"serve"`
+	Type  string           `yaml:"type"`
+	Name  string           `yaml:"name"`
+	Serve ServeEnum        `yaml:"serve"`
+	Debug JobDebugSettings `yaml:"debug,optional"`
 }

 type SnapJob struct {
 	Type         string            `yaml:"type"`
 	Name         string            `yaml:"name"`
 	Pruning      PruningLocal      `yaml:"pruning"`
+	Debug        JobDebugSettings  `yaml:"debug,optional"`
 	Snapshotting SnapshottingEnum  `yaml:"snapshotting"`
 	Filesystems  FilesystemsFilter `yaml:"filesystems"`
 }
@@ -222,16 +223,10 @@ type SnapshottingEnum struct {
 }

 type SnapshottingPeriodic struct {
-	Type                    string            `yaml:"type"`
-	Prefix                  string            `yaml:"prefix"`
-	Interval                *PositiveDuration `yaml:"interval"`
-	Hooks                   HookList          `yaml:"hooks,optional"`
-	TimestampFormattingSpec `yaml:",inline"`
-}
-
-type TimestampFormattingSpec struct {
-	TimestampFormat   string `yaml:"timestamp_format,optional,default=dense"`
-	TimestampLocation string `yaml:"timestamp_location,optional,default=UTC"`
+	Type     string            `yaml:"type"`
+	Prefix   string            `yaml:"prefix"`
+	Interval *PositiveDuration `yaml:"interval"`
+	Hooks    HookList          `yaml:"hooks,optional"`
 }

 type CronSpec struct {
@@ -260,11 +255,10 @@ func (s *CronSpec) UnmarshalYAML(unmarshal func(v interface{}, not_strict bool)
 }

 type SnapshottingCron struct {
-	Type                    string   `yaml:"type"`
-	Prefix                  string   `yaml:"prefix"`
-	Cron                    CronSpec `yaml:"cron"`
-	Hooks                   HookList `yaml:"hooks,optional"`
-	TimestampFormattingSpec `yaml:",inline"`
+	Type   string   `yaml:"type"`
+	Prefix string   `yaml:"prefix"`
+	Cron   CronSpec `yaml:"cron"`
+	Hooks  HookList `yaml:"hooks,optional"`
 }

 type SnapshottingManual struct {
@@ -306,6 +300,18 @@ type Global struct {
 	Serve      *GlobalServe           `yaml:"serve,optional,fromdefaults"`
 }

+func Default(i interface{}) {
+	v := reflect.ValueOf(i)
+	if v.Kind() != reflect.Ptr {
+		panic(v)
+	}
+	y := `{}`
+	err := yaml.Unmarshal([]byte(y), v.Interface())
+	if err != nil {
+		panic(err)
+	}
+}
+
 type ConnectEnum struct {
 	Ret interface{}
 }
@@ -472,6 +478,14 @@ type GlobalStdinServer struct {
 	SockDir string `yaml:"sockdir,default=/var/run/zrepl/stdinserver"`
 }

+type JobDebugSettings struct {
+	Conn *struct {
+		ReadDump  string `yaml:"read_dump"`
+		WriteDump string `yaml:"write_dump"`
+	} `yaml:"conn,optional"`
+	RPCLog bool `yaml:"rpc_log,optional,default=false"`
+}
+
 type HookList []HookEnum

 type HookEnum struct {
@@ -659,9 +673,8 @@ var ConfigFileDefaultLocations = []string{
 	"/usr/local/etc/zrepl/zrepl.yml",
 }

-func ParseConfig(path string) (rootConfig *Config, err error) {
+func ParseConfig(path string) (i *Config, err error) {

-	// Parse main configuration file
 	if path == "" {
 		// Try default locations
 		for _, l := range ConfigFileDefaultLocations {
@@ -680,94 +693,11 @@ func ParseConfig(path string) (rootConfig *Config, err error) {

 	var bytes []byte

-	if bytes, err = os.ReadFile(path); err != nil {
+	if bytes, err = ioutil.ReadFile(path); err != nil {
 		return
 	}

-	rootConfig, err = ParseConfigBytes(bytes)
-	if err != nil {
-		return nil, err
-	}
-
-	err = expandConfigInclude(path, rootConfig)
-	if err != nil {
-		return nil, err
-	}
-
-	if err = validateJobNames(rootConfig); err != nil {
-		return nil, err
-	}
-
-	return rootConfig, err
-}
-
-func IsInternalJobName(s string) bool {
-	return strings.HasPrefix(s, "_")
-}
-
-func validateJobNames(config *Config) error {
-	seen := make(map[string]struct{})
-	for _, job := range config.Jobs {
-		name := job.Name()
-		if IsInternalJobName(name) {
-			return errors.Errorf("job name %q is reserved for internal use (starts with _)", name)
-		}
-		if _, ok := seen[name]; ok {
-			return errors.Errorf("duplicate job name %q", name)
-		}
-		seen[name] = struct{}{}
-	}
-	return nil
-}
-
-func expandConfigInclude(configPath string, config *Config) (err error) {
-	var includeConfigPaths []string
-	for _, path := range config.Include {
-		if !pathpkg.IsAbs(configPath) {
-			path = pathpkg.Join(pathpkg.Dir(configPath), path)
-		}
-
-		stat, statErr := os.Stat(path)
-		if statErr != nil {
-			return errors.Wrapf(statErr, "stat path %q", path)
-		}
-
-		if stat.Mode().IsDir() {
-			directoryPaths, err := filepath.Glob(path + "/*.yml")
-			if err != nil {
-				return err
-			}
-
-			includeConfigPaths = append(includeConfigPaths, directoryPaths...)
-		} else if stat.Mode().IsRegular() {
-			if extention := filepath.Ext(path); extention != ".yml" {
-				return fmt.Errorf("include config files must end with `.yml`: %s", path)
-			}
-			includeConfigPaths = append(includeConfigPaths, path)
-		} else {
-			return fmt.Errorf("not a file or directory: %s", path)
-		}
-	}
-
-	for _, path := range includeConfigPaths {
-		var bytes []byte
-		if bytes, err = os.ReadFile(path); err != nil {
-			return errors.Wrapf(err, "read file: %q", path)
-		}
-
-		includedConfig, err := ParseConfigBytes(bytes)
-		if err != nil {
-			return err
-		}
-
-		if len(includedConfig.Include) > 0 {
-			return errors.Errorf("included configuration files must not include other files: %s", path)
-		}
-
-		config.Jobs = append(config.Jobs, includedConfig.Jobs...)
-	}
-
-	return nil
+	return ParseConfigBytes(bytes)
 }

 func ParseConfigBytes(bytes []byte) (*Config, error) {
@@ -775,16 +705,8 @@ func ParseConfigBytes(bytes []byte) (*Config, error) {
 	if err := yaml.UnmarshalStrict(bytes, &c); err != nil {
 		return nil, err
 	}
-	if c != nil {
-		return c, nil
-	}
-	// There was no yaml document in the file, deserialize from default.
-	// => See TestFromdefaultsEmptyDoc in yaml-config package.
-	if err := yaml.UnmarshalStrict([]byte("{}"), &c); err != nil {
-		return nil, err
-	}
 	if c == nil {
-		panic("the fallback to deserialize from `{}` should work")
+		return nil, fmt.Errorf("config is empty or only consists of comments")
 	}
 	return c, nil
 }
@@ -2,8 +2,16 @@ package config

 import (
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )

+func TestConfigEmptyFails(t *testing.T) {
+	conf, err := testConfig(t, "\n")
+	assert.Nil(t, conf)
+	assert.Error(t, err)
+}
+
 func TestJobsOnlyWorks(t *testing.T) {
 	testValidConfig(t, `
 jobs:
@@ -26,7 +34,7 @@ jobs:
    keep_sender:
    - type: not_replicated
    keep_receiver:
-    - type: last_n
+    - type: last_n 
      count: 1
 `)
 }
@@ -7,7 +7,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

-	zfsprop "github.com/zrepl/zrepl/internal/zfs/property"
+	zfsprop "github.com/zrepl/zrepl/zfs/property"
 )

 func TestRecvOptions(t *testing.T) {
@@ -35,16 +35,8 @@ jobs:
  snapshotting:
    type: periodic
    prefix: zrepl_
-    timestamp_format: dense
    interval: 10m
 `
-	cron := `
-  snapshotting:
-    type: cron
-    prefix: zrepl_
-    timestamp_format: human
-    cron: "10 * * * *"
-`

 	periodicDaily := `
  snapshotting:
@@ -99,15 +91,6 @@ jobs:
 		assert.Equal(t, "periodic", snp.Type)
 		assert.Equal(t, 24*time.Hour, snp.Interval.Duration())
 		assert.Equal(t, "zrepl_", snp.Prefix)
-		assert.Equal(t, "dense", snp.TimestampFormat)
-	})
-
-	t.Run("cron", func(t *testing.T) {
-		c = testValidConfig(t, fillSnapshotting(cron))
-		snp := c.Jobs[0].Ret.(*PushJob).Snapshotting.Ret.(*SnapshottingCron)
-		assert.Equal(t, "cron", snp.Type)
-		assert.Equal(t, "zrepl_", snp.Prefix)
-		assert.Equal(t, "human", snp.TimestampFormat)
 	})

 	t.Run("hooks", func(t *testing.T) {
@@ -120,59 +103,3 @@ jobs:
 	})

 }
-
-func TestSnapshottingTimestampDefaults(t *testing.T) {
-	tmpl := `
-jobs:
- name: foo
-  type: push
-  connect:
-    type: local
-    listener_name: foo
-    client_identity: bar
-  filesystems: {"<": true}
-  %s
-  pruning:
-    keep_sender:
-    - type: last_n
-      count: 10
-    keep_receiver:
-    - type: last_n
-      count: 10
-`
-
-	periodic := `
-  snapshotting:
-    type: periodic
-    prefix: zrepl_
-    interval: 10m
-`
-	cron := `
-  snapshotting:
-    type: cron
-    prefix: zrepl_
-    cron: "10 * * * *"
-`
-
-	fillSnapshotting := func(s string) string { return fmt.Sprintf(tmpl, s) }
-	var c *Config
-
-	t.Run("periodic", func(t *testing.T) {
-		c = testValidConfig(t, fillSnapshotting(periodic))
-		snp := c.Jobs[0].Ret.(*PushJob).Snapshotting.Ret.(*SnapshottingPeriodic)
-		assert.Equal(t, "periodic", snp.Type)
-		assert.Equal(t, 10*time.Minute, snp.Interval.Duration())
-		assert.Equal(t, "zrepl_", snp.Prefix)
-		assert.Equal(t, snp.TimestampFormat, "dense")
-		assert.Equal(t, snp.TimestampLocation, "UTC")
-	})
-
-	t.Run("cron", func(t *testing.T) {
-		c = testValidConfig(t, fillSnapshotting(cron))
-		snp := c.Jobs[0].Ret.(*PushJob).Snapshotting.Ret.(*SnapshottingCron)
-		assert.Equal(t, "cron", snp.Type)
-		assert.Equal(t, "zrepl_", snp.Prefix)
-		assert.Equal(t, snp.TimestampFormat, "dense")
-		assert.Equal(t, snp.TimestampLocation, "UTC")
-	})
-}
@@ -22,8 +22,6 @@ func TestSampleConfigsAreParsedWithoutErrors(t *testing.T) {
 		t.Errorf("glob failed: %+v", err)
 	}

-	paths = append(paths, "../../packaging/systemd-default-zrepl.yml")
-
 	for _, p := range paths {

 		if path.Ext(p) != ".yml" {
@@ -45,23 +43,8 @@ func TestSampleConfigsAreParsedWithoutErrors(t *testing.T) {

 }

-func TestInvalidSampleConfigsFailToParse(t *testing.T) {
-	paths, err := filepath.Glob("./samples/invalid/*/zrepl.yml")
-	require.NoError(t, err, "glob failed")
-	require.NotEmpty(t, paths, "no invalid sample configs found")
-
-	for _, p := range paths {
-		t.Run(p, func(t *testing.T) {
-			_, err := ParseConfig(p)
-			require.Error(t, err, "expected config %s to fail parsing", p)
-			t.Logf("config %s failed as expected: %v", p, err)
-		})
-	}
-}
-
 // template must be a template/text template with a single '{{ . }}' as placeholder for val
-//
-//nolint:deadcode,unused
+//nolint[:deadcode,unused]
 func testValidConfigTemplate(t *testing.T, tmpl string, val string) *Config {
 	tmp, err := template.New("master").Parse(tmpl)
 	if err != nil {
@@ -100,7 +83,7 @@ func trimSpaceEachLineAndPad(s, pad string) string {
 func TestTrimSpaceEachLineAndPad(t *testing.T) {
 	foo := `
 	foo
-	bar baz
+	bar baz 
 	`
 	assert.Equal(t, "  \n  foo\n  bar baz\n  \n", trimSpaceEachLineAndPad(foo, "  "))
 }
@@ -154,18 +137,3 @@ func TestCronSpec(t *testing.T) {
 	}

 }
-
-func TestEmptyConfig(t *testing.T) {
-	cases := []string{
-		"",
-		"\n",
-		"---",
-		"---\n",
-	}
-	for _, input := range cases {
-		config := testValidConfig(t, input)
-		require.NotNil(t, config)
-		require.NotNil(t, config.Global)
-		require.Empty(t, config.Jobs)
-	}
-}
@@ -14,14 +14,14 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"

-	"github.com/zrepl/zrepl/internal/daemon/job"
-	"github.com/zrepl/zrepl/internal/daemon/nethelpers"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/util/envconst"
-	"github.com/zrepl/zrepl/internal/version"
-	"github.com/zrepl/zrepl/internal/zfs"
-	"github.com/zrepl/zrepl/internal/zfs/zfscmd"
+	"github.com/zrepl/zrepl/daemon/job"
+	"github.com/zrepl/zrepl/daemon/nethelpers"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/util/envconst"
+	"github.com/zrepl/zrepl/version"
+	"github.com/zrepl/zrepl/zfs"
+	"github.com/zrepl/zrepl/zfs/zfscmd"
 )

 type controlJob struct {
@@ -3,8 +3,10 @@ package daemon
 import (
 	"context"
 	"fmt"
+	"math/rand"
 	"os"
 	"os/signal"
+	"strings"
 	"sync"
 	"syscall"
 	"time"
@@ -12,18 +14,18 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"

-	"github.com/zrepl/zrepl/internal/daemon/logging/trace"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/util/envconst"
+	"github.com/zrepl/zrepl/daemon/logging/trace"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/util/envconst"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/job"
-	"github.com/zrepl/zrepl/internal/daemon/job/reset"
-	"github.com/zrepl/zrepl/internal/daemon/job/wakeup"
-	"github.com/zrepl/zrepl/internal/daemon/logging"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/version"
-	"github.com/zrepl/zrepl/internal/zfs/zfscmd"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/job"
+	"github.com/zrepl/zrepl/daemon/job/reset"
+	"github.com/zrepl/zrepl/daemon/job/wakeup"
+	"github.com/zrepl/zrepl/daemon/logging"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/version"
+	"github.com/zrepl/zrepl/zfs/zfscmd"
 )

 func Run(ctx context.Context, conf *config.Config) error {
@@ -37,6 +39,12 @@ func Run(ctx context.Context, conf *config.Config) error {
 		cancel()
 	}()

+	// The math/rand package is used presently for generating trace IDs, we
+	// seed it with the current time and pid so that the IDs are mostly
+	// unique.
+	rand.Seed(time.Now().UnixNano())
+	rand.Seed(int64(os.Getpid()))
+
 	outlets, err := logging.OutletsFromConfig(*conf.Global.Logging)
 	if err != nil {
 		return errors.Wrap(err, "cannot build logging from config")
@@ -63,7 +71,7 @@ func Run(ctx context.Context, conf *config.Config) error {
 	})

 	for _, job := range confJobs {
-		if config.IsInternalJobName(job.Name()) {
+		if IsInternalJobName(job.Name()) {
 			panic(fmt.Sprintf("internal job name used for config job '%s'", job.Name())) //FIXME
 		}
 	}
@@ -210,6 +218,10 @@ const (
 	jobNameControl    = "_control"
 )

+func IsInternalJobName(s string) bool {
+	return strings.HasPrefix(s, "_")
+}
+
 func (s *jobs) start(ctx context.Context, j job.Job, internal bool) {
 	s.m.Lock()
 	defer s.m.Unlock()
@@ -217,12 +229,10 @@ func (s *jobs) start(ctx context.Context, j job.Job, internal bool) {
 	ctx = logging.WithInjectedField(ctx, logging.JobField, j.Name())

 	jobName := j.Name()
-
-	// package `config` enforces these with clean errors, these are just assertions
-	if !internal && config.IsInternalJobName(jobName) {
+	if !internal && IsInternalJobName(jobName) {
 		panic(fmt.Sprintf("internal job name used for non-internal job %s", jobName))
 	}
-	if internal && !config.IsInternalJobName(jobName) {
+	if internal && !IsInternalJobName(jobName) {
 		panic(fmt.Sprintf("internal job does not use internal job name %s", jobName))
 	}
 	if _, ok := s.jobs[jobName]; ok {
@@ -6,8 +6,8 @@ import (

 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/zfs"
 )

 type DatasetMapFilter struct {
@@ -160,14 +160,6 @@ func (m DatasetMapFilter) Filter(p *zfs.DatasetPath) (pass bool, err error) {
 	return
 }

-func (m DatasetMapFilter) UserSpecifiedDatasets() (datasets zfs.UserSpecifiedDatasetsSet) {
-	datasets = make(zfs.UserSpecifiedDatasetsSet)
-	for i := range m.entries {
-		datasets[m.entries[i].path.ToString()] = true
-	}
-	return
-}
-
 // Construct a new filter-only DatasetMapFilter from a mapping
 // The new filter allows exactly those paths that were not forbidden by the mapping.
 func (m DatasetMapFilter) InvertedFilter() (inv *DatasetMapFilter, err error) {
@@ -3,7 +3,7 @@ package filters
 import (
 	"testing"

-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/zfs"
 )

 func TestDatasetMapFilter(t *testing.T) {
@@ -3,8 +3,8 @@ package hooks
 import (
 	"fmt"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/zfs"
 )

 type List []Hook
@@ -5,7 +5,7 @@
 //
 // This package also provides all supported hook type implementations and abstractions around them.
 //
-// # Use For Other Kinds Of ExpectStepReports
+// Use For Other Kinds Of ExpectStepReports
 //
 // This package REQUIRES REFACTORING before it can be used for other activities than snapshots, e.g. pre- and post-replication:
 //
@@ -15,7 +15,7 @@
 // The hook implementations should move out of this package.
 // However, there is a lot of tight coupling which to untangle isn't worth it ATM.
 //
-// # How This Package Is Used By Package Snapper
+// How This Package Is Used By Package Snapper
 //
 // Deserialize a config.List using ListFromConfig().
 // Then it MUST filter the list to only contain hooks for a particular filesystem using
@@ -30,4 +30,5 @@
 // Command hooks make it available in the environment variable ZREPL_DRYRUN.
 //
 // Plan.Report() can be called while Plan.Run() is executing to give an overview of plan execution progress (future use in "zrepl status").
+//
 package hooks
@@ -7,7 +7,7 @@ import (
 	"sync"
 	"time"

-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/zfs"
 )

 // Re-export type here so that
@@ -6,9 +6,9 @@ import (
 	"context"
 	"sync"

-	"github.com/zrepl/zrepl/internal/daemon/logging"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/util/envconst"
+	"github.com/zrepl/zrepl/daemon/logging"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/util/envconst"
 )

 type Logger = logger.Logger
@@ -4,8 +4,8 @@ import (
 	"context"
 	"fmt"

-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/zfs"
 )

 type HookJobCallback func(ctx context.Context) error
@@ -12,11 +12,11 @@ import (
 	"sync"
 	"time"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/util/circlog"
-	"github.com/zrepl/zrepl/internal/util/envconst"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/util/circlog"
+	"github.com/zrepl/zrepl/util/envconst"
 )

 type HookEnvVar string
@@ -12,27 +12,24 @@ import (

 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/zfs"
 )

-// Hook to implement the following recommmendation from MySQL docs
 // https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/backup-methods.html
 //
-//	Making Backups Using a File System Snapshot:
+// Making Backups Using a File System Snapshot:
 //
-//	If you are using a Veritas file system, you can make a backup like this:
+//  If you are using a Veritas file system, you can make a backup like this:
 //
-//	   	From a client program, execute FLUSH TABLES WITH READ LOCK.
-//	   	From another shell, execute mount vxfs snapshot.
-//	   	From the first client, execute UNLOCK TABLES.
-//	   	Copy files from the snapshot.
-//	   	Unmount the snapshot.
+//    	From a client program, execute FLUSH TABLES WITH READ LOCK.
+//    	From another shell, execute mount vxfs snapshot.
+//    	From the first client, execute UNLOCK TABLES.
+//    	Copy files from the snapshot.
+//    	Unmount the snapshot.
 //
-//		Similar snapshot capabilities may be available in other file systems, such as LVM or ZFS.
-//
-
+//	Similar snapshot capabilities may be available in other file systems, such as LVM or ZFS.
 type MySQLLockTables struct {
 	errIsFatal  bool
 	connector   sqldriver.Connector
@@ -10,9 +10,9 @@ import (
 	"github.com/lib/pq"
 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/zfs"
 )

 type PgChkptHook struct {
@@ -11,13 +11,13 @@ import (

 	"github.com/stretchr/testify/require"

-	"github.com/zrepl/zrepl/internal/daemon/logging/trace"
+	"github.com/zrepl/zrepl/daemon/logging/trace"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/hooks"
-	"github.com/zrepl/zrepl/internal/daemon/logging"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/hooks"
+	"github.com/zrepl/zrepl/daemon/logging"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/zfs"
 )

 type comparisonAssertionFunc func(require.TestingT, interface{}, interface{}, ...interface{})
@@ -1,5 +1,6 @@
 // Code generated by "enumer -type=StepStatus -trimprefix=Step"; DO NOT EDIT.

+//
 package hooks

 import (
@@ -8,24 +8,25 @@ import (

 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/common/log"

-	"github.com/zrepl/zrepl/internal/daemon/logging/trace"
-	"github.com/zrepl/zrepl/internal/util/envconst"
+	"github.com/zrepl/zrepl/daemon/logging/trace"
+	"github.com/zrepl/zrepl/util/envconst"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/job/reset"
-	"github.com/zrepl/zrepl/internal/daemon/job/wakeup"
-	"github.com/zrepl/zrepl/internal/daemon/pruner"
-	"github.com/zrepl/zrepl/internal/daemon/snapper"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/replication"
-	"github.com/zrepl/zrepl/internal/replication/driver"
-	"github.com/zrepl/zrepl/internal/replication/logic"
-	"github.com/zrepl/zrepl/internal/replication/report"
-	"github.com/zrepl/zrepl/internal/rpc"
-	"github.com/zrepl/zrepl/internal/transport"
-	"github.com/zrepl/zrepl/internal/transport/fromconfig"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/job/reset"
+	"github.com/zrepl/zrepl/daemon/job/wakeup"
+	"github.com/zrepl/zrepl/daemon/pruner"
+	"github.com/zrepl/zrepl/daemon/snapper"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/replication"
+	"github.com/zrepl/zrepl/replication/driver"
+	"github.com/zrepl/zrepl/replication/logic"
+	"github.com/zrepl/zrepl/replication/report"
+	"github.com/zrepl/zrepl/rpc"
+	"github.com/zrepl/zrepl/transport"
+	"github.com/zrepl/zrepl/transport/fromconfig"
+	"github.com/zrepl/zrepl/zfs"
 )

 type ActiveSide struct {
@@ -481,7 +482,7 @@ func (j *ActiveSide) do(ctx context.Context) {
 	go func() {
 		select {
 		case <-reset.Wait(ctx):
-			GetLogger(ctx).Info("reset received, cancelling current invocation")
+			log.Info("reset received, cancelling current invocation")
 			cancelThisRun()
 		case <-ctx.Done():
 		}
@@ -6,8 +6,8 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/transport"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/transport"
 )

 func TestFakeActiveSideDirectMethodInvocationClientIdentityDoesNotPassValidityTest(t *testing.T) {
@@ -1,5 +1,6 @@
 // Code generated by "enumer -type=ActiveSideState"; DO NOT EDIT.

+//
 package job

 import (
@@ -7,8 +7,8 @@ import (

 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/util/bandwidthlimit"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/util/bandwidthlimit"
 )

 func JobsFromConfig(c *config.Config, parseFlags config.ParseFlags) ([]Job, error) {
@@ -24,6 +24,21 @@ func JobsFromConfig(c *config.Config, parseFlags config.ParseFlags) ([]Job, erro
 		js[i] = j
 	}

+	// receiving-side root filesystems must not overlap
+	{
+		rfss := make([]string, 0, len(js))
+		for _, j := range js {
+			jrfs, ok := j.OwnedDatasetSubtreeRoot()
+			if !ok {
+				continue
+			}
+			rfss = append(rfss, jrfs.ToString())
+		}
+		if err := validateReceivingSidesDoNotOverlap(rfss); err != nil {
+			return nil, err
+		}
+	}
+
 	return js, nil
 }

@@ -3,11 +3,11 @@ package job
 import (
 	"github.com/pkg/errors"

-	"github.com/zrepl/zrepl/internal/config"
-	"github.com/zrepl/zrepl/internal/daemon/filters"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/util/nodefault"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/config"
+	"github.com/zrepl/zrepl/daemon/filters"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/util/nodefault"
+	"github.com/zrepl/zrepl/zfs"
 )

 type SendingJobConfig interface {
@@ -10,7 +10,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

-	"github.com/zrepl/zrepl/internal/config"
+	"github.com/zrepl/zrepl/config"
 )

 func TestValidateReceivingSidesDoNotOverlap(t *testing.T) {
@@ -113,7 +113,7 @@ jobs:
 }

 func TestSampleConfigsAreBuiltWithoutErrors(t *testing.T) {
-	paths, err := filepath.Glob("../../../internal/config/samples/*")
+	paths, err := filepath.Glob("../../config/samples/*")
 	if err != nil {
 		t.Errorf("glob failed: %+v", err)
 	}
@@ -7,10 +7,10 @@ import (

 	"github.com/prometheus/client_golang/prometheus"

-	"github.com/zrepl/zrepl/internal/daemon/logging"
-	"github.com/zrepl/zrepl/internal/endpoint"
-	"github.com/zrepl/zrepl/internal/logger"
-	"github.com/zrepl/zrepl/internal/zfs"
+	"github.com/zrepl/zrepl/daemon/logging"
+	"github.com/zrepl/zrepl/endpoint"
+	"github.com/zrepl/zrepl/logger"
+	"github.com/zrepl/zrepl/zfs"
 )

 type Logger = logger.Logger
--- a/Show More
+++ b/Show More