From 49753d125b3afea1485f9671ed0ba91843f81402 Mon Sep 17 00:00:00 2001
From: Neal Gompa <ngompa@fedoraproject.org>
Date: Thu, 15 Jul 2021 10:10:35 -0400
Subject: [PATCH] Set up the zeros file as nodatacow to disable CoW and
 compression

This makes it so that we can effectively zero out the filesystem.

Fixes: ad8e04aacbcd6681df4667d19262df9e801708a9

Signed-off-by: Neal Gompa <ngompa@fedoraproject.org>
---
 fedora-cloud-base.ks | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fedora-cloud-base.ks b/fedora-cloud-base.ks
index 74c3d94..a647718 100644
--- a/fedora-cloud-base.ks
+++ b/fedora-cloud-base.ks
@@ -122,6 +122,9 @@ basearch=$(uname -i)
 rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch
 
 echo "Zeroing out empty space."
+# Create zeros file with nodatacow and no compression
+touch /var/tmp/zeros
+chattr +C /var/tmp/zeros
 # This forces the filesystem to reclaim space from deleted files
 dd bs=1M if=/dev/zero of=/var/tmp/zeros || :
 echo "(Don't worry -- that out-of-space error was expected.)"