Remove snapshotter package

.buildkite/pipeline.yml

@@ -55,17 +55,6 @@ steps:
       - make test-in-docker
     timeout_in_minutes: 10
 
-  - label: ":rotating_light: :hammer: snapshotter *root* tests"
-    agents:
-      queue: "${BUILDKITE_AGENT_META_DATA_QUEUE:-default}"
-    env:
-      DOCKER_IMAGE_TAG: "$BUILDKITE_BUILD_NUMBER"
-      EXTRAGOARGS: "-v -count=1 -race"
-    command: 'make -C snapshotter integ-test'
-    timeout_in_minutes: 10
-    concurrency: 1
-    concurrency_group: 'loop-device test'
-
   - label: ":rotating_light: :running_shirt_with_sash: runtime isolated tests"
     agents:
       queue: "${BUILDKITE_AGENT_META_DATA_QUEUE:-default}"
@@ -78,19 +67,6 @@ steps:
       - make -C runtime integ-test FICD_SNAPSHOTTER=devmapper FICD_DM_POOL=build_${BUILDKITE_BUILD_NUMBER}_runtime
     timeout_in_minutes: 10
 
-  - label: ":rotating_light: :exclamation: example tests (naive)"
-    agents:
-      queue: "${BUILDKITE_AGENT_META_DATA_QUEUE:-default}"
-    env:
-      DOCKER_IMAGE_TAG: "$BUILDKITE_BUILD_NUMBER"
-      EXTRAGOARGS: "-v -count=1"
-    artifact_paths:
-      - "examples/logs/*"
-    command: 'make -C examples integ-test'
-    timeout_in_minutes: 10
-    concurrency: 1
-    concurrency_group: 'loop-device test'
-
   - label: ":rotating_light: :exclamation: example tests (devmapper)"
     agents:
       queue: "${BUILDKITE_AGENT_META_DATA_QUEUE:-default}"

Makefile

@@ -11,7 +11,7 @@
 # express or implied. See the License for the specific language governing
 # permissions and limitations under the License.
 
-SUBDIRS:=agent runtime snapshotter internal examples firecracker-control/cmd/containerd eventbridge
+SUBDIRS:=agent runtime internal examples firecracker-control/cmd/containerd eventbridge
 TEST_SUBDIRS:=$(addprefix test-,$(SUBDIRS))
 INTEG_TEST_SUBDIRS:=$(addprefix integ-test-,$(SUBDIRS))
 

README.md

@@ -31,12 +31,6 @@ container standards such as the OCI image format.
 There are several components in this repository that enable containerd to use
 Firecracker microVMs to run containers:
 
-* A [snapshotter](snapshotter) that creates files used as block-devices for
-  pass-through into the microVM.  This snapshotter is used for providing the
-  container image to the microVM.  The snapshotter runs as an out-of-process
-  gRPC proxy plugin.  We currently have two implementations of a snapshotter: a
-  [naive](snapshotter/cmd/naive) copy-ahead implementation and a
-  [devmapper-based](snapshotter/cmd/devmapper) copy-on-write implementation.
 * A [control plugin](firecracker-control) managing the lifecycle of the
   runtime and implementing our [control API](proto/firecracker.proto) to
   manage the lifecycle of microVMs. The control plugin is compiled in to the

docs/getting-started.md

@@ -78,8 +78,6 @@ GO111MODULE=on make all
 Once you have built the runtime, be sure to place the following binaries on your
 `$PATH`:
 * `runtime/containerd-shim-aws-firecracker`
-* `snapshotter/cmd/devmapper/devmapper_snapshotter`
-* `snapshotter/cmd/naive/naive_snapshotter`
 * `firecracker-control/cmd/containerd/firecracker-containerd`
 * `firecracker-control/cmd/containerd/firecracker-ctr`
 
@@ -135,10 +133,11 @@ root = "/var/lib/firecracker-containerd/containerd"
 state = "/run/firecracker-containerd"
 [grpc]
   address = "/run/firecracker-containerd/containerd.sock"
-[proxy_plugins]
-  [proxy_plugins.firecracker-devmapper]
-    type = "snapshot"
-    address = "/var/run/firecracker-containerd/devmapper-snapshotter.sock"
+[plugins]
+  [plugins.devmapper]
+    pool_name = "fc-dev-thinpool"
+    base_image_size = "10GB"
+    root_path = "/var/lib/firecracker-containerd/snapshotter/devmapper"
 
 [debug]
   level = "debug"
@@ -153,7 +152,7 @@ binaries are in sync with one another. While other builds of `ctr` may work with
 ### Prepare and configure snapshotter
 
 The devmapper snapshotter requires a thinpool to exist.
-Below is a script to create a thinpool as well as an example config file.
+Below is a script to create a thinpool device.
 
 `Note: The configuration with loopback devices is slow and not intended for use in production.`
 
@@ -205,21 +204,6 @@ fi
 ```
 </details>
 
-<details>
-<summary>Snappshotter config file example.</summary>
-
-```json
-{
-  "base_image_size": "10GB",
-  "root_path": "/var/lib/firecracker-containerd/snapshotter/devmapper",
-  "pool_name": "fc-dev-thinpool"
-}
-```
-
-</details>
-
-A reasonable location for this file is at `/etc/firecracker-dm-snapshotter/config.json`.
-
 ### Configure containerd runtime plugin
 
 The runtime expects a JSON-formatted configuration file to be located either in
@@ -277,17 +261,7 @@ configuration file has the following fields:
 
 ## Usage
 
-Start the containerd snapshotter
-
-```bash
-$ ./devmapper_snapshotter \
-  -address /var/run/firecracker-containerd/devmapper-snapshotter.sock \
-  -path /tmp/fc-snapshot \
-  -config /etc/firecracker-dm-snapshotter/config.json
-```
-`note: The path for -config needs to match the location used when configuring the devmapper snapshotter.`
-
-In another terminal, start containerd
+Start containerd
 
 ```bash
 $ sudo PATH=$PATH /usr/local/bin/firecracker-containerd \
@@ -298,15 +272,17 @@ Pull an image
 
 ```bash
 $ sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock images \
-  pull --snapshotter firecracker-devmapper\
+  pull --snapshotter devmapper \
   docker.io/library/busybox:latest
 ```
 
 And start a container!
 
 ```bash
 $ sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock \
-  run --snapshotter firecracker-devmapper --runtime aws.firecracker \
+  run \
+  --snapshotter devmapper \
+  --runtime aws.firecracker \
   --rm --tty --net-host \
   docker.io/library/busybox:latest busybox-test
 ```
@@ -321,7 +297,7 @@ $ sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock \
 $ sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock \
   namespaces label fc \
   containerd.io/defaults/runtime=aws.firecracker \
-  containerd.io/defaults/snapshotter=firecracker-devmapper
+  containerd.io/defaults/snapshotter=devmapper
 
 $ sudo firecracker-ctr --address /run/firecracker-containerd/containerd.sock \
   -n fc \

go.sum

@@ -18,6 +18,7 @@ github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:l
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@@ -44,6 +45,7 @@ github.com/coreos/go-iptables v0.4.2/go.mod h1:/mVI274lEDI2ns62jHCDnCyBF9Iwsmeka
 github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
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 github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/cyphar/filepath-securejoin v0.2.2/go.mod h1:FpkQEhXnPnOthhzymB7CGsFk2G9VLXONKD9G7QGMM+4=
 github.com/d2g/dhcp4 v0.0.0-20170904100407-a1d1b6c41b1c/go.mod h1:Ct2BUK8SB0YC1SMSibvLzxjeJLnrYEVLULFNiHY9YfQ=
 github.com/d2g/dhcp4client v1.0.0/go.mod h1:j0hNfjhrt2SxUOw55nL0ATM/z4Yt3t2Kd1mW34z5W5s=
 github.com/d2g/dhcp4server v0.0.0-20181031114812-7d4a0a7f59a5/go.mod h1:Eo87+Kg/IX2hfWJfwxMzLyuSZyxSoAug2nGa1G2QAi8=
@@ -147,6 +149,7 @@ github.com/miekg/dns v1.1.16 h1:iMEQ/IVHxPTtx2Q07JP/k4CKRvSjiAZjZ0hnhgYEDmE=
 github.com/miekg/dns v1.1.16/go.mod h1:YNV562EiewvSmpCB6/W4c6yqjK7Z+M/aIS1JHsIVeg8=
 github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/mrunalp/fileutils v0.0.0-20171103030105-7d4729fb3618/go.mod h1:x8F1gnqOkIEiO4rqoeEEEqQbo7HjGMTvyoq3gej4iT0=
 github.com/onsi/ginkgo v0.0.0-20151202141238-7f8ab55aaf3b h1:Ey6yH0acn50T/v6CB75bGP4EMJqnv9WvnjN7oZaj+xE=
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@@ -159,6 +162,7 @@ github.com/opencontainers/runc v1.0.0-rc9 h1:/k06BMULKF5hidyoZymkoDCzdJzltZpz/UU
 github.com/opencontainers/runc v1.0.0-rc9/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
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+github.com/opencontainers/selinux v1.3.0/go.mod h1:+BLncwf63G4dgOzykXAxcmnFlUaOlkDdmw/CqsW6pjs=
 github.com/pborman/uuid v1.2.0 h1:J7Q5mO4ysT1dv8hyrUGHb9+ooztCXu1D8MY8DZYsu3g=
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