growisofs / system load / dma setting
From: Thomas Fritzsche (tf_at_noto.de)
Date: 11/30/04
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Date: Tue, 30 Nov 2004 15:27:58 +0100 (CET) To: linux-kernel@vger.kernel.org
Hi Linux-Hackers,
I posted this message first to the cdwriter mailing list (
http://www.mail-archive.com/cdwrite%40other.debian.org/msg07041.html )
but they told me this is a kernel problem, thus I post it here again.
Because I had this DVD-Device running without problem in 2.6.8 I can
exclude that it's a cabel/hw-problem.
Thanks and regards,
Thomas Fritzsche
---------------------------------------
Hi all,
I'm using growisofs -Z /dev/hdc=/link/to/iso.iso to burn DVD-Video's. This
works, BUT the system load is very high while burning. I'l checked DMA
setting but DMA is on (and 32 bit). I googled around but can not find a
solution. I tried again and found that after burning dma is off!? I
checked dmesg and found message:
--------------------------------------
hdc: irq timeout: status=0xd0 { Busy }
hdc: irq timeout: error=0xd0LastFailedSense 0x0d
hdc: DMA disabled
hdc: ATAPI reset complete
--------------------------------------
I tested a few times and sometimes only the system load is very high but
DMA is still set after the run, but often DMA setting is disabled and I
get the message above.
My system configuration is:
uname -a
Linux vdr.noto.de 2.4.27-ctvdr-1 #1 Fri Oct 15 18:38:29 UTC 2004 i686
GNU/Linux
hdparm -i /dev/hdc
/dev/hdc:
Model=_NEC DVD_RW ND-3500AG, FwRev=2.16, SerialNo=
Config={ Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode
------------------------------
Is this a growisofs problem or a kernel problem? What causes this trouble?
What can I do to avoid this problems.
Thanks for any help and kind regards,
Thomas Fritzsche
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