From ab710e99bbbacdcb445776393ef627d8cb2d3574 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Fri, 22 Apr 2016 22:43:20 -0400
Subject: mount seed layers when booting with RAM option

---
 old-school/menu-select | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'old-school')

diff --git a/old-school/menu-select b/old-school/menu-select
index 55360b6..e661079 100755
--- a/old-school/menu-select
+++ b/old-school/menu-select
@@ -64,8 +64,19 @@ case "$1" in
   boot-ram)
     mkdir /cdrom /btrfs
     bootwait samizdat-cdrom
-    mount -t btrfs -o loop,subvol=ROOT /cdrom/live/filesystem.btrfs /btrfs
-    modprobe brd rd_size=$((256 * 1024 * 2)) # TODO: choose intelligently
+
+    losetup_layers || error
+    modprobe btrfs || error
+    btrfs device scan || error
+    uuid=$(choose_uuid) || error
+    [ "$uuid" ] || error
+
+    mount -t btrfs -o loop,subvol=ROOT UUID="$uuid" /btrfs
+    memtotal=$(sed -ne 's/MemTotal: *//p' /proc/meminfo)
+    ramdisk=$((1024 * ${memtotal% *} / 2))
+    [ $ramdisk -ge 256 ] || ramdisk=256
+    modprobe brd rd_size=$ramdisk
+
     btrfs device add /dev/ram0 /btrfs
     mount -o rw,remount /btrfs
     mount -o move /btrfs /root
-- 
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