init-live.sh: fix media automount failed after booting from usb-drive
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] (From OE-Core rev: 79bd773cc5e8b8e873cabeb2b9a91f460501dad7) Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -79,11 +79,13 @@ boot_live_root() {
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# Move the mount points of some filesystems over to
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# the corresponding directories under the real root filesystem.
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for dir in `awk '/\/dev.* \/media/{print $2}' /proc/mounts`; do
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mkdir -p ${ROOT_MOUNT}/$dir
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mount -n --move $dir ${ROOT_MOUNT}/$dir
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done
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mount -n --move /proc ${ROOT_MOUNT}/proc
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mount -n --move /sys ${ROOT_MOUNT}/sys
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mount -n --move /dev ${ROOT_MOUNT}/dev
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# Move /media/$i over to the real root filesystem
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mount -n --move /media/$i ${ROOT_MOUNT}/media/realroot
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cd $ROOT_MOUNT
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exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init
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