[1/1] init-live.sh: fix media automount failed after booting from usb-drive

Submitted by Hongxu Jia on June 6, 2013, 6:31 a.m. | Patch ID: 51201


Message ID da30ef6b6b7439554a46d3500e751444f04e8a78.1370499356.git.hongxu.jia@windriver.com
State Accepted
Commit 79bd773cc5e8b8e873cabeb2b9a91f460501dad7
Headers show

Commit Message

Hongxu Jia June 6, 2013, 6:31 a.m.
1, This issue happens to BSP only.
After a BSP board is booted with Yocto linux from USB drive, "cat /proc/mounts" shows:
/dev/sda3 /media/sda3 ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0
/dev/sda1 /media/sda1 ext3 rw,relatime,errors=continue,barrier=1,data=ordered 0 0
/dev/sda2 /media/sda2 ext3 rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered 0 0

but actually the directory /media/sda1 doesn't exist at all, "df" shows:
df: /media/sda3: No such file or directory
df: /media/sda1: No such file or directory
df: /media/sda2: No such file or directory

2, This is because the mount data comes from proc setup during early boot
before the change root, which then uses a different root filesystem, the
media is not in the new root filesystem.

3, During early boot before switch_root, use `mount --move' to move all
medias to the new root filesystem could also fix this issue.

[YOCTO #2064]
[YOCTO #3705]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
 meta/recipes-core/initrdscripts/files/init-live.sh |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

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diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh b/meta/recipes-core/initrdscripts/files/init-live.sh
index 4bd1b52..804e16e 100644
--- a/meta/recipes-core/initrdscripts/files/init-live.sh
+++ b/meta/recipes-core/initrdscripts/files/init-live.sh
@@ -79,11 +79,13 @@  boot_live_root() {
     # Move the mount points of some filesystems over to
     # the corresponding directories under the real root filesystem.
+    for dir in `awk '/\/dev.* \/media/{print $2}' /proc/mounts`; do
+        mkdir -p  ${ROOT_MOUNT}/$dir
+        mount -n --move $dir ${ROOT_MOUNT}/$dir
+    done
     mount -n --move /proc ${ROOT_MOUNT}/proc
     mount -n --move /sys ${ROOT_MOUNT}/sys
     mount -n --move /dev ${ROOT_MOUNT}/dev
-    # Move /media/$i over to the real root filesystem
-    mount -n --move /media/$i ${ROOT_MOUNT}/media/realroot
     cd $ROOT_MOUNT
     exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init