On Wed, 17 Oct 2018 at 11:02, 趙翊廷 <jack...@csie.io> wrote:

> 2. in /etc/mdev.confg we need to add a symbol link something like 
> /dev/block/3:0
>     hd[a-z]* 0:6 660 *ln -sf /dev/$MDEV /dev/block/$(ls -l /dev/$MDEV|awk 
> '{print $5}'|tr -d ','):$(ls -l /dev/$MDEV|awk '{print $6}')
>     sd[a-z]* 0:6 660 *ln -sf /dev/$MDEV /dev/block/$(ls -l /dev/$MDEV|awk 
> '{print $5}'|tr -d ','):$(ls -l /dev/$MDEV|awk '{print $6}')

why two rules?
[hs]d[a-z]*
and yes, should fix examples/mdev.conf too.

> if $MDEV is hda then will do the following things
>
> Get hda's Major=`ls -l /dev/hda | awk '{print $5} | tr -d ',''`
> Get hda's Minor=`ls -l /dev/$MDEV|awk '{print $6}'`
> create links: ln -sf /dev/hda /dev/block/$MAJOR:$MINOR

printf "%d:%d" $(stat -c 0x%t\ 0x%T /dev/$MDEV)
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