Messages in this thread | | | Date | Sat, 15 May 2004 23:19:01 +0200 | From | Jens Axboe <> | Subject | Re: dma ripping |
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On Sat, May 15 2004, Daniele Bernardini wrote: > On Sat, 2004-05-15 at 16:58, Jens Axboe wrote: > > On Sat, May 15 2004, Daniele Bernardini wrote: > > > > > > On Sat, 2004-05-15 at 12:14, Jens Axboe wrote: > > > > On Fri, May 14 2004, Daniele Bernardini wrote: > > > > > Hi Folks, > > > > > > > > > > I am trying to get cd ripping to work on a freshly installed SuSE 9.1 on > > > > > IBM thinkpad R50 with dvdram drive. > > > > > > > > > > It works for a while and then hangs. At this point nothing short of a > > > > > reboot works. Ripping stop working when the message > > > > > cdrom: dropping to single frame dma > > > > > comes up. The system feels slow for a couple of seconds and then is back > > > > > to normal, but no ripping until next reboot > > > > > > > > > > I am running the 2.6.4 compiled by SuSE. > > > > > > > > Can you retest with this small debug patch applied. > > > > > > > > --- drivers/cdrom/cdrom.c~ 2004-05-15 12:12:24.770228291 +0200 > > > > +++ drivers/cdrom/cdrom.c 2004-05-15 12:13:25.101720866 +0200 > > > > @@ -1987,6 +1987,7 @@ > > > > struct request_sense *s = rq->sense; > > > > ret = -EIO; > > > > cdi->last_sense = s->sense_key; > > > > + printk("rip failed, sense %x/%x/%x\n", s->sense_key, s->asc, s->ascq); > > > > } > > > > > > > > if (blk_rq_unmap_user(rq, ubuf, bio, len)) > > > > > > I did it and started ripping a cd it froze after 9 tracks, though did > > > not see your message. I was looking at /var/log/messages (see below). > > > BTW the system got instable and then froze had to power down. It > > > happened before always after the ripping problem. > > > > > > Should I aswitch on debug for the cdrom? > > > > Just an idea - can you log vmstat 5 info while doing this burn? Maybe > > there's still a little leak in there, so watch the ram usage > > (used/free/swap/cache). > > > > Does your drive have dma enabled? > > dma was off. I turned it on and now everything is fine I am through the > third cd without a glitch... > > Thanks and sorry for being so stupid :)
You are not being stupid, I think we have a leak in there some where. PIO should work just fine. Slower than DMA of course, but it should work perfectly of course.
I'll check up on this...
-- Jens Axboe
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