Date: Thu, 13 Jan 2000 01:04:47 -0500 (EST) From: Agent Drek <drek@MonsterByMistake.Com> To: "Chad R. Larson" <chad@DCFinc.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: access floppy rw to lock system Message-ID: <Pine.BSF.4.10.10001130046430.43923-100000@bunny.monsterbymistake.com> In-Reply-To: <200001130214.TAA03924@freeway.dcfinc.com>
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On Wed, 12 Jan 2000, Chad R. Larson wrote:
|Date: Wed, 12 Jan 2000 19:14:56 -0700 (MST)
|From: Chad R. Larson <chad@DCFinc.com>
|To: Agent Drek <drek@MonsterByMistake.Com>
|Cc: freebsd-stable@FreeBSD.ORG
|Subject: Re: access floppy rw to lock system
|
|As I recall, Agent Drek wrote:
|>
|> I have a repeatable problem on my FreeBSD-3.4Stable workstation. If
|> the floppy disk is physically tabbed as read-only and I mount it rw I
|> can then 'lock' the system up by using vim (to read a text-file on the
|> disk ... less had the same problem). Is this expected behaviour? I
|> did this from the console and could still <Alt> between the virtual
|> consoles. The only way to get going again was to reboot. After that
|> happened twice I tabbed the disk writable and things were fine.
|
|I'd start by asking, "Why would you do that?"
|
|If you make the media read-only at the hardware level, by all means
|mount it read-only.
|
I'm not used to ever using a floppy disk, no need until I got ether-
net card and needed info from damn diskette.
|If you're just asking why this interesting phenomenon occurs, that's
|a different question. I'm not sure if it's an MS-DOS filesystem,
|but a UFS mount will want to modify the superblock with the mount
|time and mount point.
and should hang the ENTIRE system if it can't!?!
I'm asking because I used the default way of thinking ...
mount /floppy
I usually use vim to read big files ...
I'm happy to know that this is a way to instantly hang a freebsd
server. This felt wrong to me so I thought I would try and get
a second opinion. What if the disk was just corrupt .. could the
same behaviour happen?
was msdosfs (m$-driver disk). One person mailed me off list to say
that they too had done this once as well.
thanks,
=derek
Monster By Mistake Inc > 'digital plumber'
http://www.interlog.com/~drek
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