[OE-core] [PATCH v2] initrd: add recovery feature

[Otavio Salvador]

On Tue, Nov 13, 2012 at 7:12 PM, Radu Moisan <radu.moisan at intel.com> wrote:

> Allows you to use as root a partition instead of the rootfs.img
> for recovering an old install, and fails safe when no rootfs is
> found, dropping the user to a shell if something goes wrong.
>
> Signed-off-by: Radu Moisan <radu.moisan at intel.com>
> Signed-off-by: Alexandru Damian <alexandru.damian at intel.com>
> ---
>  meta/recipes-core/initrdscripts/files/init-live.sh |   44
> +++++++++++++++++++-
>  1 file changed, 42 insertions(+), 2 deletions(-)
>
> diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh
> b/meta/recipes-core/initrdscripts/files/init-live.sh
> index 5682fd1..81686b9 100644
> --- a/meta/recipes-core/initrdscripts/files/init-live.sh
> +++ b/meta/recipes-core/initrdscripts/files/init-live.sh
> @@ -68,13 +68,49 @@ fatal() {
>
>  early_setup
>
> +# wait for the udevd to settle
> +echo "Waiting for udev to settle..."
> +udevadm settle --timeout=3
>

I think if we take a timeout it needs to be about 10s or 20s. I have some
slow machines that take way more time then 3s.


>  [ -z "$CONSOLE" ] && CONSOLE="/dev/console"
>
>  read_args
>
> -echo "Waiting for removable media..."
> -while true
> +# boot partiton menu, if one or more bootable partitions exist
> +BOOTMENU=`ls /media/sd*/sbin/init 2>/dev/null | wc -l`
> +if [ $BOOTMENU -gt 0 ]; then
> +   choice=0
> +   while [ $choice -le 0 ]; do
> +       echo "1). boot live ramfs image"
> +       count=2
> +       for i in `ls /media/sd*/sbin/init 2>/dev/null | cut -d "/" -f 3`;
> do
> +           echo $count"). boot /dev/"$i
> +           choicecmd[$count]=$i
> +           count=$(( count + 1))
> +       done
> +       echo
> +       echo -n "Your choice: "
> +       read choice
> +   done
> +
> +   if [ $choice -gt 1 ]; then
> +       #ROOT_MOUNT=/media/${choicecmd[${choice}]}
> +       ROOT_MOUNT=none #testing
> +       echo "Booting local root ... $ROOT_MOUNT"
> +       if [ -d $ROOT_MOUNT ]; then
> +           boot_live_root
> +       else
> +           fatal "Rootfs partition not mounted"
> +       fi
> +   fi
> +fi
> +
> +echo -n "Waiting for removable media... "
> +CNT=0
> +while [ $CNT -le 3 ];
>  do
> +  echo -n "$CNT "
> +  CNT=$(( $CNT + 1 ))
>    for i in `ls /media 2>/dev/null`; do
>        if [ -f /media/$i/$ROOT_IMAGE ] ; then
>                 found="yes"
> @@ -91,6 +127,10 @@ do
>    sleep 1
>  done
>
> +if [ "$found" != "yes" ]; then
> +   fatal "...could not mount removable media, drop to shell"
> +fi
> +
>  case $label in
>      boot)
>         mkdir $ROOT_MOUNT
> --
> 1.7.9.5
>
>
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>



-- 
Otavio Salvador                             O.S. Systems
E-mail: otavio at ossystems.com.br  http://www.ossystems.com.br
Mobile: +55 53 9981-7854              http://projetos.ossystems.com.br
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