From d751306335b6799aa51f0df71a390b5c3d6810ba Mon Sep 17 00:00:00 2001
From: Colin Walters <walters@verbum.org>
Date: Sun, 27 Oct 2019 23:48:28 +0000
Subject: [PATCH] overlay/ignition-ostree-mount-sysroot: Only use prjquota on
 XFS

This helps complete the move in
https://github.com/coreos/coreos-assembler/pull/786
to have our rootflags be fully dynamic.

It's also necessary for ext4+fsverity.
---
 .../ignition-ostree-mount-sysroot.sh            | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/ignition-ostree-mount-sysroot.sh b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/ignition-ostree-mount-sysroot.sh
index 6e7f600dd9..1fc8cc8982 100755
--- a/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/ignition-ostree-mount-sysroot.sh
+++ b/overlay.d/05core/usr/lib/dracut/modules.d/40ignition-ostree/ignition-ostree-mount-sysroot.sh
@@ -1,7 +1,16 @@
 #!/bin/bash
 set -euo pipefail
 
-# Today this is trivial, but in the future this will require integration
-# with Ignition.
-mountflags=prjquota
-mount -o "${mountflags}" /dev/disk/by-label/root /sysroot
+# We use prjquota on XFS by default to aid multi-tenant
+# Kubernetes (and other container) clusters.  See
+# https://github.com/coreos/coreos-assembler/pull/303/commits/6103effbd006bb6109467830d6a3e42dd847668d
+# In the future this will be augmented with a check for whether
+# or not we've reprovisioned the rootfs, since we don't want to
+# force on prjquota there.
+rootpath=/dev/disk/by-label/root
+eval $(blkid -o export ${rootpath})
+mountflags=
+if [ "${TYPE}" == "xfs" ]; then
+  mountflags=prjquota
+fi
+mount -o "${mountflags}" "${rootpath}" /sysroot