On Thu, Oct 11, 2012 at 05:10:19PM +0600, ???? ??????? wrote:
> ?????, 10 ??????? 2012 ?. ???????????? Nick Holland ?????:
>
> > On 10/09/2012 12:55 PM, ???? ??????? wrote:
> >
> >> Hello!
> >>
> >> I'm investigating /etc/rc script. And I found the following there:
> >>
> >> if [ -e /fastboot ]; then
> >> echo "Fast boot: skipping disk checks."
> >> elif [ X"$1" = X"autoboot" ]; then
> >> echo "Automatic boot in progress: starting file system checks."
> >>
> >>
> >> hmm... if I put /fastboot, no filesystem will be checked ?
> >>
> >
> > so says the code, yes.
> >
> > how it supposed
> >> to work for non-nfs filesystems ?
> >>
> >
> > "properly"?
> >
> > they'll be not checked, too?
> >
> > Just one more question.
> If /fastboot presents, filesystem won't be checked, right?
> But how does fsck detects if there's /fastboot? Is it possible thing to do
> without actually mount it?
fsck does not do anything with /fastboot. The rc script (which calls
fsck) does that. During boot, the / filesystem is initially mounted
read-only, and then is possibly checked by the rc script. After that,
the root filesystem ro status is updated to rw.
>
> Is it possible to mount dirty filesystem in read-only mode ? If not, it
> doesn't make sense at all.
Yes, you can mount dirty filesystem with -f. Even read-write iirc.
Very dangerous.
-Otto
