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Move actions into torusctl, expose snapshot functionality. #272
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In the past, it was separated by whether it was a volume action vs. a generic metadata action. This is bad UX; most people want `torusctl` to be simply the one tool they need. This change turns `torusblk` into the client/mount-tool only for block devices, true to its name. `torusd` is still the storage daemon, and `torusctl` (analogous to `kubectl`) is your one-stop shop for working with torus.
Also allows for restoring snapshots. All this is CoW, so it only uses the amount of data that changes, not the whole of the volume.
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| # Snapshotting Torus Block Volumes | |||
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| Snapshots of Torus Block Volumes can be taken at any time, as of the last sync() of the volume, even while mounted. Snapshots are Copy on Write and don't require a full copy; only the storage used in the past and any updates to the storage will count toward the total usage. | |||
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[Copy on Write][cow]
[cow]:https://en.wikipedia.org/wiki/Copy-on-write
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lgtm |
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