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Introduce the Windows lcow diff/snaphotter

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Implements the Windows lcow differ/snapshotter responsible for managing
the creation and lifetime of lcow containers on Windows.

Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
This commit is contained in:
Justin Terry (VM)
2018-08-13 08:14:30 -07:00
parent ce243288e2
commit 0110b3c0bc
14 changed files with 751 additions and 13 deletions
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12
diff/windows/windows.go
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@@ -175,12 +175,18 @@ func mountsToLayerAndParents(mounts []mount.Mount) (string, []string, error) {
if len(mounts) != 1 {
return "", nil, errors.Wrap(errdefs.ErrInvalidArgument, "number of mounts should always be 1 for Windows layers")
}
layer := mounts[0].Source
mnt := mounts[0]
if mnt.Type != "windows-layer" {
// This is a special case error. When this is received the diff service
// will attempt the next differ in the chain which for Windows is the
// lcow differ that we want.
return "", nil, errdefs.ErrNotImplemented
}
parentLayerPaths, err := mounts[0].GetParentPaths()
parentLayerPaths, err := mnt.GetParentPaths()
if err != nil {
return "", nil, err
}
return layer, parentLayerPaths, nil
return mnt.Source, parentLayerPaths, nil
}