From 70301e5aa7f9310f5450d2bc8caaa6e2a4af7a55 Mon Sep 17 00:00:00 2001 From: Michelle Au Date: Mon, 10 Apr 2017 14:43:32 -0700 Subject: [PATCH] Add FAQ about LocalStorage PV partitions --- contributors/design-proposals/local-storage-overview.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/contributors/design-proposals/local-storage-overview.md b/contributors/design-proposals/local-storage-overview.md index 07329a619..920a86f3a 100644 --- a/contributors/design-proposals/local-storage-overview.md +++ b/contributors/design-proposals/local-storage-overview.md @@ -581,6 +581,9 @@ Since older kubelets will not surface capacity of shared partitions, the schedul Kubelet will attempt to enforce capacity limits on a best effort basis. If the underlying container runtime cannot surface usage metrics for the writable layer, then kubelet will not provide capacity isolation for the writable layer. +### Are LocalStorage PVs required to be a whole partition? + +No, but it is the recommended way to ensure capacity and performance isolation. For HDDs, a whole disk is recommended for performance isolation. In some environments, multiple storage partitions are not available, so the only option is to share the same filesystem. In that case, directories in the same filesystem can be specified, and the adminstrator could configure group quota to provide capacity isolation. # Features & Milestones