From 525ba822dcbaf125e30a58cd0af5747d660ff3fa Mon Sep 17 00:00:00 2001
From: Sam Thursfield <sam.thursfield@codethink.co.uk>
Date: Tue, 10 Jun 2014 17:25:04 +0100
Subject: Load btrfs kernel module when entering chroot

Otherwise, weird errors occur when deploying to rawdisk:

    Error creating disk image2014-06-10 16:00:40
    [devel-system-x86_64-generic][my-raw-disk-image][rawdisk.write]Failure
    to create disk image at /src/tmp/testdev.img
    ERROR: Command failed: mount -o loop /src/tmp/testdev.img
    /src/tmp/deployments/tmpQ7wXO1/tmp4lVDcu/tmpvHSzDE
    mount: mounting /dev/loop0 on
    /src/tmp/deployments/tmpQ7wXO1/tmp4lVDcu/tmpvHSzDE failed: Device or
    resource busy
---
 enter-baserock | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/enter-baserock b/enter-baserock
index 4ce2b52..b4b73ff 100755
--- a/enter-baserock
+++ b/enter-baserock
@@ -39,6 +39,14 @@ fi
 
 cd /
 
+if ! grep -q btrfs /proc/filesystems; then
+    echo "No btrfs support detected in kernel, attempting to load btrfs module"
+    if ! sudo -p "Password (to run 'modprobe -v btrfs'): " modprobe -v btrfs; then
+        echo "Loading module failed, looks like your kernel doesn't support Btrfs."
+        echo "Deploying systems to Btrfs disk images will not work correctly."
+    fi
+fi
+
 if test "x$SSH_AUTH_SOCK" != "x"; then
     echo "Forwarding SSH agent into chroot"
     TDIR=$(mktemp --tmpdir=/tmp -d)
-- 
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