Re: PKTCDVD related bugzilla bugs

Re: PKTCDVD related bugzilla bugs

[Peter Osterlund]

On Mon, 2 Jul 2007, Tejun Heo wrote:

> Hello, it's me again.
>
> We have another bug which reportedly is related to pktcdvd.  Please respond.
>
> http://bugzilla.kernel.org/show_bug.cgi?id=7547
> http://bugzilla.kernel.org/show_bug.cgi?id=7805

The problem is that when you run pktsetup, the driver will open the cdrom 
device and keep it open. A very long time ago, the driver didn't do that, 
but that caused other problems, see for example:

 	http://herbie.ucs.indiana.edu/hypermail/linux/kernel/0407.0/0761.html

I don't know how to fix these problems in the kernel, but I know that an 
old idea from Jens Axboe was to merge pktsetup and mount in user space so 
that pktsetup only needs to run when you are actually going to use packet 
writing.

-- 
Peter Osterlund - petero2@telia.com
http://web.telia.com/~u89404340

Re: PKTCDVD related bugzilla bugs

[Tejun Heo]

Hello, Peter.

Peter Osterlund wrote:
> On Mon, 2 Jul 2007, Tejun Heo wrote:
> 
>> Hello, it's me again.
>>
>> We have another bug which reportedly is related to pktcdvd.  Please
>> respond.
>>
>> http://bugzilla.kernel.org/show_bug.cgi?id=7547
>> http://bugzilla.kernel.org/show_bug.cgi?id=7805
> 
> The problem is that when you run pktsetup, the driver will open the
> cdrom device and keep it open. A very long time ago, the driver didn't
> do that, but that caused other problems, see for example:
> 
>     http://herbie.ucs.indiana.edu/hypermail/linux/kernel/0407.0/0761.html
> 
> I don't know how to fix these problems in the kernel, but I know that an
> old idea from Jens Axboe was to merge pktsetup and mount in user space
> so that pktsetup only needs to run when you are actually going to use
> packet writing.

In bug 7547[1], somebody is issuing START_STOP to the ODD repeatedly
which times out if the drive is empty.  Is this coming from PKTCDVD or
from userland polling?  Also, do you mind adding yourself to the bug so
that I don't have to relay?

Thanks.

-- 
tejun

[1] http://bugzilla.kernel.org/show_bug.cgi?id=7547