Re: [PATCH 3/3] Add a special handler when mount rootfs failed

[Baoquan <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 12/21/2012 04:55 PM, Baoquan He wrote:
> Dracut will drop into shell in case anything wrong with rootfs mounting,
> but for kdump we does not depends on rootfs for non-rootfs dump and
> kdump will handle the default fail action based on user configuration
> in /etc/kdump.conf.
>
> Here call exception_handle_check and specify a handler continue_on_fail.
> If user add a cmdline like rd.exceptionhandler=continue_on_fail, then
> go on. If no cmdline rd.exceptionhandler=continue_on_fail added, just
> drop into shell as before.
>
> Signed-off-by: Baoquan He<bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> ---
>   modules.d/98systemd/dracut-initqueue.sh |    7 ++++++-
>   1 files changed, 6 insertions(+), 1 deletions(-)
>
> diff --git a/modules.d/98systemd/dracut-initqueue.sh b/modules.d/98systemd/dracut-initqueue.sh
> index c10b32f..1d8d5a5 100755
> --- a/modules.d/98systemd/dracut-initqueue.sh
> +++ b/modules.d/98systemd/dracut-initqueue.sh
> @@ -102,9 +102,14 @@ while :; do
>       done
>
>       i=$(($i+1))
> -    [ $i -gt 20 ]&&  emergency_shell "Can't mount root filesystem"
In below code "$$" should be "&&". I tested this patchset by changing 
mount-loop limitation count to 1.
     +    [ $i -gt 20 ] && failure='yes' && break
> +    [ $i -gt 20 ]&&  failure='yes' $$ break
>   done
>
> +if [ "$failure" = "yes" ]; then
> +    exception_handle_check -h "continue_on_fail" "Can't mount root filesystem"
> +    failure="no"
> +fi
> +
>   {
>       echo -n "Mounted root filesystem "
>       while read dev mp rest; do [ "$mp" = "$NEWROOT" ]&&  echo $dev; done<  /proc/mounts