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Add storage isolation API

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This PR adds the new APIs to support storage capacity isolation as described in the proposal
https://github.com/kubernetes/community/pull/306

1. Add SizeLimit for emptyDir volume
2. Add scratch and overlay storage type used by container level or
node level
This commit is contained in:
Jing Xu
2017-05-25 13:53:40 -07:00
parent 052cd6d30b
commit 85f030c2aa
5 changed files with 100 additions and 1 deletions
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10
pkg/api/validation/validation.go
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@@ -396,7 +396,12 @@ func validateVolumeSource(source *api.VolumeSource, fldPath *field.Path) field.E
allErrs := field.ErrorList{}
if source.EmptyDir != nil {
numVolumes++
// EmptyDirs have nothing to validate
if !utilfeature.DefaultFeatureGate.Enabled(features.LocalStorageCapacityIsolation) {
unsetSizeLimit := resource.Quantity{}
if unsetSizeLimit.Cmp(source.EmptyDir.SizeLimit) != 0 {
allErrs = append(allErrs, field.Forbidden(fldPath.Child("emptyDir").Child("sizeLimit"), "SizeLimit field disabled by feature-gate for EmptyDir volumes"))
}
}
}
if source.HostPath != nil {
if numVolumes > 0 {
@@ -3633,6 +3638,9 @@ func ValidateResourceRequirements(requirements *api.ResourceRequirements, fldPat
allErrs = append(allErrs, field.Invalid(limPath, quantity.String(), fmt.Sprintf("must be greater than or equal to %s request", resourceName)))
}
}
if resourceName == api.ResourceStorageOverlay && !utilfeature.DefaultFeatureGate.Enabled(features.LocalStorageCapacityIsolation) {
allErrs = append(allErrs, field.Forbidden(limPath, "ResourceStorageOverlay field disabled by feature-gate for ResourceRequirements"))
}
}
for resourceName, quantity := range requirements.Requests {
fldPath := reqPath.Key(string(resourceName))