linux-kernel - Re: Oops when using growisofs

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Message-Id: <200806251146.30142.mb@bu3sch.de>
Date:	Wed, 25 Jun 2008 11:46:29 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Jan Kara <jack@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>
Subject: Re: Oops when using growisofs

On Wednesday 25 June 2008 11:37:00 Jan Kara wrote:
> > Yeah the IO error is the trigger.
> > I noticed that it had obvious troubles accessing the DVD that was in the drive.
> > It sweeped over it for several seconds, then hung the system for 2 or 3 seconds
> > and then oopsed. But after that everything continued to work as usual.
> > (Except kded of course)
>   Hmm, by "accessing" do you mean that you've mounted the burned DVD and when
> browsing it the IO error and the oops occured or that IO error happened
> when burning? It is important because in the first case i_blkbits would be
> taken from some ISOFS inode desribing some file while in the second case
> i_blkbits are from the inode of the device...

I don't know. kded, which caused the oops, is always running. It is a KDE daemon
that polls device state and so on. So yeah, it might have accessed the drive
while growisofs was writing to it.

However with "accessing" I mean the DVD drive motor was spinning up and down
and the laser lens was moving like crazy. The sound that happens, if you put
a completely scratched DVD into the drive and it is unable to make sense of it.
However, this was not scratched. It was a new DVD with one session on it that
I just burnt 5 minutes before that. So I wanted to append another session to it
and it crashed and resulted in IO errors in growisofs.

-- 
Greetings Michael.
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