On Thu, Sep 07, 2006 at 02:54:12PM -0700, Andrew Morton wrote:
> On Fri, 8 Sep 2006 00:59:27 +0400
> Alexey Dobriyan <[email protected]> wrote:
>
> > You'd laugh, but...
> >
> > Summary:
> >
> > After loading and unloading rd.ko many times "ls -l /dev/ram*"
> > results are not persistent.
> >
> > Steps to reproduce:
> >
> > # while true; do modprobe rd && rmmod rd; done
> > [wait ~10 seconds]
> > ^C
> > # modprobe rd
> >
> > # ls -l /dev/ram*
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram12 -> rd/12
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram6 -> rd/6
> > # ls -l /dev/ram*
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram0 -> rd/0
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram13 -> rd/13
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram6 -> rd/6
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram7 -> rd/7
> > # ls -l /dev/ram*
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram0 -> rd/0
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram1 -> rd/1
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram11 -> rd/11
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram12 -> rd/12
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram14 -> rd/14
> > lrwxrwxrwx 1 root root 5 Sep 8 00:35 /dev/ram15 -> rd/15
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram3 -> rd/3
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram7 -> rd/7
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram8 -> rd/8
> > lrwxrwxrwx 1 root root 4 Sep 8 00:35 /dev/ram9 -> rd/9
> >
> > Versions:
> >
> > Linux 2.6.18-rc5
> > udev 087
>
> So I assume udev is still madly crunching on its message backlog while
> this is happening?
It shouldn't be, this should not take that long. Run 'udevmonitor' to
see what udev is doing at the moment to verify this or not.
> If so, ug.
I agree. What distro is this?
I just tested this on my box running Gentoo and a newer version of udev
(099), and it worked just fine. It took a while for udev to catch back
up with the flood of events, but it did and everything was fine. No
harm done in the end.
thanks,
greg k-h
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