Date: Tue, 09 Feb 1999 00:09:32 +0100 From: "Jose M. Alcaide" <jose@we.lc.ehu.es> To: "Thomas T. Veldhouse" <veldy@visi.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Reboot - reproducible Message-ID: <36BF6EAC.809E2A93@we.lc.ehu.es> References: <Pine.GSO.4.02.9902081650560.28144-100000@isis.visi.com>
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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
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