Ratheendran R:
> *mount -o noatime,ro -t ext3 /dev/mmcblk0p1 /rootfsmount
> -o rw -t tmpfs aufs-tmpfs /rwmount -t aufs -o
> noatime,br=/rw=rw:/rootfs=ro none /aufsmkdir -p /aufs/rootfsmount --move
> /rootfs /aufs/rootfs*
>
> *exec switch_root /aufs /sbin/init*
Ok, you have a root aufs dir (/) with two layers. The upper is writable
tmpfs /rw which should be invisible under the root dir, and the lower is
readonly ext3 /rootfs which should be visible.
> Now I want to use the /rootfs in rw mode.
>
> so I do this by using the command below.
> *mount -o remount, br:/rootfs=rw /rootfs*
I don't think it correct.
What you want to do is
# mount -o remount,rw /rootfs
make ext3 /rootfs writable.
# mount -o remount,mod:/rootfs=rw /
and then make the branch/layer in aufs writable too.
don't you?
> I create a new file in home directory with some text info embedded.
What is the path your "home directory?"
If it means /home/you, then you are accessing aufs and everything will
be fine.
If it means /rootfs/home/you, then you are by-passing aufs and access
the branch/layer directly. In this case, unless you specify
"udba=inotify" you won't see the new file.
J. R. Okajima
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