From f25230a151e5ecdfddbbd628e0b60557e28463e6 Mon Sep 17 00:00:00 2001
From: Justin Cormack <justin.cormack@docker.com>
Date: Thu, 10 Mar 2016 11:09:54 +0000
Subject: [PATCH] generate compressed initrd, use it for xhyverun

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
---
 alpine/.gitignore | 1 +
 alpine/Makefile   | 7 +++++--
 xhyve/xhyverun.sh | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/alpine/.gitignore b/alpine/.gitignore
index 129c3b59f..fd95f3b16 100644
--- a/alpine/.gitignore
+++ b/alpine/.gitignore
@@ -1,4 +1,5 @@
 *.img
+*.img.gz
 mobylinux.iso
 Dockerfile.armhf
 etc/inittab
diff --git a/alpine/Makefile b/alpine/Makefile
index 6470ea963..c29d8b3dc 100644
--- a/alpine/Makefile
+++ b/alpine/Makefile
@@ -1,4 +1,4 @@
-all:	initrd.img
+all:	initrd.img.gz
 
 ETCFILES=etc/issue etc/motd etc/network/interfaces
 ETCFILES+=etc/securetty
@@ -11,6 +11,9 @@ initrd.img: Dockerfile mkinitrd.sh repositories $(ETCFILES)
 	docker-compose build moby
 	docker-compose run --rm -T moby /bin/mkinitrd.sh
 
+initrd.img.gz: initrd.img
+	cat initrd.img | gzip -9 > initrd.img.gz
+
 mobylinux.iso: initrd.img Dockerfile.iso isolinux.cfg
 	docker-compose build iso
 	docker-compose run --rm -T iso cp /tmp/output.iso /mnt/mobylinux.iso
@@ -34,7 +37,7 @@ initrd-arm.img: Dockerfile.armhf
 	docker-compose run --rm -T arm /bin/mkinitrd.sh > $@
 
 clean:
-	rm -f initrd.img initrd-arm.img Dockerfile.armhf etc/inittab
+	rm -f initrd.img initrd.img.gz initrd-arm.img Dockerfile.armhf etc/inittab
 	rm -f mobylinux.iso
 	$(MAKE) -C packages clean
 	$(MAKE) -C kernel clean
diff --git a/xhyve/xhyverun.sh b/xhyve/xhyverun.sh
index a641062e9..319cd6d01 100755
--- a/xhyve/xhyverun.sh
+++ b/xhyve/xhyverun.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 KERNEL="../alpine/kernel/vmlinuz64"
-INITRD="../alpine/initrd.img"
+INITRD="../alpine/initrd.img.gz"
 CMDLINE="earlyprintk=serial console=ttyS0"
 
 MEM="-m 1G"