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layer is compressed tar format #518

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layer is compressed tar format #518

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xiekeyang
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Signed-off-by: xiekeyang [email protected]

@@ -12,7 +12,7 @@ This specification uses the following terms:
### [Layer](layer.md)

Image filesystems are composed of *layers*.
Each layer represents a set of filesystem changes in a tar-based [layer format](layer.md), recording files to be added, changed, or deleted relative to its parent layer.
Each layer represents a set of filesystem changes in a compressed tar-based [layer format](layer.md), recording files to be added, changed, or deleted relative to its parent layer.
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This is currently covered here, and will no longer be true if/when #388 lands. In any event, compression seems like a property of the later media type, and not a fundamental property of “being a layer”.

@xiekeyang
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@wking You are right, this should be closed.

@xiekeyang xiekeyang closed this Jan 23, 2017
@xiekeyang
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@wking I have a question.

compression seems like a property of the later media type, and not a fundamental property of “being a layer”.

Then, if this comment are a little conflict to #515, as Do not confuse DiffIDs with layer digests, often referenced in the manifest, which are digests over compressed content.?

If above words in #515 should be modified?

@xiekeyang xiekeyang deleted the layer branch January 23, 2017 02:08
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wking commented Jan 23, 2017

If above words in #515 should be modified?

Those words are fine now. I'm restoring @stevvooe's "uncompressed" wording in #388.

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