Date: Tue, 09 Feb 1999 10:53:19 -0800 From: Mike Smith <mike@smith.net.au> To: Benjamin Gavin <gavinb@supranet.net> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Reboot - reproducible Message-ID: <199902091853.KAA04026@dingo.cdrom.com> In-Reply-To: Your message of "Tue, 09 Feb 1999 10:15:24 CST." <4.1.19990209101513.00a38650@mail.supranet.net>
next in thread | previous in thread | raw e-mail | index | archive | help
I think a relative of that can be seen with this:
# mount /dev/fd0 /mnt
# cd /mnt
# umount /mnt
(oops)
# cd /
# umount /mnt
> I am able to reproduce this behavior as well. In my case (3.0-STABLE
> 2/8/1999) merely trying to write to a write-protected disk will cause a
> reboot. This is a _major_ problem, and is something that didn't exist
> about 1 month ago when I CVSupped another server. Anyone know what's
> causing these reboots? When mine reboots, I get:
>
> < messages about the disk being write protected >
> panic: dirty buffers
>
> Syncing disks... 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 ...
>
> When I tried it with Ctrl-C I got:
> < messages about the disk being write protected >
> panic: dirty buffers
>
> Syncing disks... 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ...
>
> Ben
>
> At 12:09 AM 2/9/99 +0100, you wrote:
> >Thomas T. Veldhouse wrote:
> >>
> >> I did a make world lastnight off of 3.0 stable source code freshly cvsup.
> >> I was trying to create some floppy disks using:
> >>
> >> dd if=boot.flp of=/dev/fd0
> >>
> >> I had forgotten to remove the write-protection from the diskette. The
> >> drive suddenly started going wild (floppy drive). I tried to hit Cntl-C
> >> after a second X locked up and the computer rebooted. I tried the
> >> samething on my gateway machine and it also rebooted (STABLE-02061999).
> >> Certainly hitting Cntl-C should not reboot the computer. The disks
> >> were not synced in either case. I am wondering if this has anything to do
> >> with the spontaneous reboots I have been getting under load.
> >>
> >
> >Perhaps this problem is related to another one I found recently: when
> >trying to mount (R/W) a write protected unit (nobody is perfect :-) ),
> >such as a diskette or a MO disk, the kernel complaints, but the
> >mount succeeds anyway. After that, unmounting the device is not possible.
> >A diskette can be manually ejected for removing the write protection,
> >but a MO disk (I suppose that the same would happen using a ZIP)
> >cannot be ejected :-(. My next action is remount R/O (mount -u -r)
> >the device: more kernel messages. And after that, an umount ends with
> >a panic ("dirty buffers") _always_.
> >
> >-- JMA
> >-----------------------------------------------------------------------
> >José Mª Alcaide | mailto:jose@we.lc.ehu.es
> >Universidad del País Vasco | mailto:jmas@es.FreeBSD.ORG
> >Dpto. de Electricidad y Electrónica | http://www.we.lc.ehu.es/~jose
> >Facultad de Ciencias - Campus de Lejona | Tel.: +34-946012479
> >48940 Lejona (Vizcaya) - SPAIN | Fax: +34-944858139
> >-----------------------------------------------------------------------
> > "Go ahead... make my day." - H. Callahan
> >
> >To Unsubscribe: send mail to majordomo@FreeBSD.org
> >with "unsubscribe freebsd-stable" in the body of the message
>
> /--------------------------------------------------------------------------/
> Benjamin Gavin - Senior Consultant
>
> *********** NO SPAM!! ************
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-stable" in the body of the message
>
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes you're behind. \\ mike@smith.net.au
\\ The race is long, and in the \\ msmith@freebsd.org
\\ end it's only with yourself. \\ msmith@cdrom.com
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199902091853.KAA04026>