problem burning DVDs with 2.6.17-ck1 (mlockall?)

problem burning DVDs with 2.6.17-ck1 (mlockall?)

[Brian Hall]

After upgrading from 2.6.16-ck11 to 2.6.17-ck1, I find I can no longer
burn DVDs. With growisofs I get:

:-( unable to anonymously mmap 33554432: Resource temporarily unavailable

and dvdrecord gives:

dvdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).

This happens as root or as a normal user. I have tried both "echo 0 >
/proc/sys/vm/dirty_ratio" and "echo 9 > /proc/sys/vm/dirty_ratio" with
no change in this behavior.

memtester works fine:

# memtester 512M
memtester version 4.0.5 (64-bit)
Copyright (C) 2005 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 512MB (536870912 bytes)
got  512MB (536870912 bytes), trying mlock ...locked.

# uname -a
Linux syrinx 2.6.17-ck1 #1 SMP PREEMPT Sun Jun 18 20:55:33 MDT 2006
x86_64 Dual Core AMD Opteron(tm) Processor 165 GNU/Linux

Maybe it's something else I've done on the system. Running ~amd64 Gentoo
2006.0. Suggestions welcome!

Re: problem burning DVDs with 2.6.17-ck1 (mlockall?)

[Ryan M.]

Hello,

Brian Hall wrote:
> After upgrading from 2.6.16-ck11 to 2.6.17-ck1, I find I can no longer
> burn DVDs. With growisofs I get:
<snip>
> Maybe it's something else I've done on the system. Running ~amd64 Gentoo
> 2006.0. Suggestions welcome!
> 

I have not had any problems burning DVDs with 2.6.17-ck1 using an ix86 kernel.

I primarily use k3b which utilizes growisofs.

Perhaps something else in kernel 2.6.17 with regards to x86-64 changed to cause this
problem?

regards,
Ryan M.

Re: [ck] Re: problem burning DVDs with 2.6.17-ck1 (mlockall?)

[scientica (GMail)]

Ryan M. wrote:
> Hello,
>
> Brian Hall wrote:
>> After upgrading from 2.6.16-ck11 to 2.6.17-ck1, I find I can no longer
>> burn DVDs. With growisofs I get:
> <snip>
>> Maybe it's something else I've done on the system. Running ~amd64 Gentoo
>> 2006.0. Suggestions welcome!
>>
>
> I have not had any problems burning DVDs with 2.6.17-ck1 using an ix86 
> kernel.
>
> I primarily use k3b which utilizes growisofs.
>
> Perhaps something else in kernel 2.6.17 with regards to x86-64 changed 
> to cause this
> problem?
I'm running 2.6.17-ck1 on this machine (x86-64, single core), I've 
bruned a few DVDs yesterday (using growisofs). My guess is either that 
some SMP thingy causes it (don't think it's likely though), or (and I 
hope you're not using ~amd64 in /etc/make.conf - that *will* break 
things ;) it's some ~amd64 package.
My tools are:
=app-cdr/dvd+rw-tools-5.21.4.10.8  # (<- this one provies growisofs)
=app-cdr/cdrtools-2.01.01_alpha07
other than that the only thing I can think of right now would be "need 
to be root" (or something like g+rw for the dvd-device)
>
> regards,
> Ryan M.
Cheers
Fredrik
>
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