Cyanrigger:
> > > > I think it is a problem of your shutdown script.
> > > > Generally any shutdown script executes
> > > > - kill all processes
> > > > - remount / readonly
> > > >
> > > > For the system whose root is aufs, the similar scirpt but more
> > > > work is necessary. In your case,
> > > > - remount ext3 readwrite
> > > > - kill all processes
> > > > - remount / readonly
> > > > I guess.
>
> It is no shutdown script. It is executed at random times.
I know.
My poor English seemed to make you confused. I will try write down
differently.
- run your rsync script anytime you like
- later, when you shutdown your system, you need to remount ext3
readwrite before killing processes
You may say "cannot remount ext3 readwrite anymore". It is related to my
question in previous mail.
> > > I got another question in my mind.
> > > At the end of your rsync script,
> > > mount -o remount,ro ${LOWER_BRANCH}
> > > Why didn't this remount return an error?
:::
> > > Why does ext3 allow to be readonly in the status which fsck thinks
> > > error?
Is it due to errors=remount-ro or =continue?
Will you run this test script on your ext3? On my system, the last
remount,ro returns an error expectedly.
----------------------------------------------------------------------
# customize for your system
dev=/dev/ram1
dir=$Root/ro
f=$dir/fileA
# init
sudo mount -o remount,rw $dir
dd if=/dev/urandom of=$f bs=1024 count=512
sync
ls -li $f
sudo mount -o remount,ro $dir
# simulate rsync
fsck -nf $dev
sudo mount -o remount,rw $dir
{
dd of=/dev/null bs=1024
sleep 5
} < $f &
sleep 1
> $f.tmp
mv $f.tmp $f
lsof | fgrep $dir
sudo mount -o remount,ro $dir
fsck -nf $dev
wait
----------------------------------------------------------------------
J. R. Okajima
------------------------------------------------------------------------------
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