From e445ebd0365e198a119f6f042d6c024f73b059a9 Mon Sep 17 00:00:00 2001
From: Brendan Kerrigan <kerriganb@ainfosec.com>
Date: Fri, 16 Oct 2015 14:21:44 -0400
Subject: [PATCH] Update the installer to dynamically calculate dom0 rootfs
 volume size during updates, to reflect previous work done to do so during
 clean installs.

Signed-off-by: Brendan Kerrigan <kerriganb@ainfosec.com>
---
 part2/stages/Functions/install-main | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/part2/stages/Functions/install-main b/part2/stages/Functions/install-main
index 971cc1b..d0a3ddc 100644
--- a/part2/stages/Functions/install-main
+++ b/part2/stages/Functions/install-main
@@ -306,6 +306,10 @@ upgrade_dom0()
 
     mixedgauge "Upgrading filesystem..." ${PERCENT}
     PERCENT=$((PERCENT + 30))
+
+    DOM0_SIZE_BYTES=$(zcat ${DOM0_ROOTFS} | wc -c)
+    DOM0_ROOT_LV_SIZE=$(((${DOM0_SIZE_BYTES} / 1048576) + 1))M
+
     do_cmd lvcreate --name `basename ${ROOT_DEV}.new` \
         --size ${DOM0_ROOT_LV_SIZE} `dirname ${ROOT_DEV}.new` >&2 || return 1
     write_rootfs ${DOM0_ROOTFS} ${ROOTFS_TYPE} ${ROOT_DEV}.new >&2 || {