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90 lines
2.5 KiB
Markdown
90 lines
2.5 KiB
Markdown
# continuity
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[](https://pkg.go.dev/github.com/containerd/continuity)
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[](https://github.com/containerd/continuity/actions?query=workflow%3AContinuity+branch%3Amain)
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A transport-agnostic, filesystem metadata manifest system
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This project is a staging area for experiments in providing transport agnostic
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metadata storage.
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See [opencontainers/runtime-spec#11](https://github.com/opencontainers/runtime-spec/issues/11)
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for more details.
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## Manifest Format
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A continuity manifest encodes filesystem metadata in Protocol Buffers.
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Refer to [proto/manifest.proto](proto/manifest.proto) for more details.
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## Usage
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Build:
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```console
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$ make
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```
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Create a manifest (of this repo itself):
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```console
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$ ./bin/continuity build . > /tmp/a.pb
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```
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Dump a manifest:
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```console
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$ ./bin/continuity ls /tmp/a.pb
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...
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-rw-rw-r-- 270 B /.gitignore
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-rw-rw-r-- 88 B /.mailmap
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-rw-rw-r-- 187 B /.travis.yml
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-rw-rw-r-- 359 B /AUTHORS
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-rw-rw-r-- 11 kB /LICENSE
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-rw-rw-r-- 1.5 kB /Makefile
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...
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-rw-rw-r-- 986 B /testutil_test.go
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drwxrwxr-x 0 B /version
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-rw-rw-r-- 478 B /version/version.go
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```
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Verify a manifest:
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```console
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$ ./bin/continuity verify . /tmp/a.pb
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```
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Break the directory and restore using the manifest:
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```console
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$ chmod 777 Makefile
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$ ./bin/continuity verify . /tmp/a.pb
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2017/06/23 08:00:34 error verifying manifest: resource "/Makefile" has incorrect mode: -rwxrwxrwx != -rw-rw-r--
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$ ./bin/continuity apply . /tmp/a.pb
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$ stat -c %a Makefile
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664
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$ ./bin/continuity verify . /tmp/a.pb
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```
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## Platforms
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continuity primarily targets Linux. Continuity may compile for and work on
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other operating systems, but those platforms are not tested.
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## Contribution Guide
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### Building Proto Package
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If you change the proto file you will need to rebuild the generated Go with `go generate`.
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```console
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$ go generate ./proto
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```
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## Project details
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continuity is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
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As a containerd sub-project, you will find the:
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* [Project governance](https://github.com/containerd/project/blob/main/GOVERNANCE.md),
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* [Maintainers](https://github.com/containerd/project/blob/main/MAINTAINERS),
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* and [Contributing guidelines](https://github.com/containerd/project/blob/main/CONTRIBUTING.md)
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information in our [`containerd/project`](https://github.com/containerd/project) repository.
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