FC2: SMP problems on IBM X330 server

[John Wendel]

On Friday 16 July 2004 04:36 pm, Richard Welty wrote:
> John Wendel <john.wendel at metnet.navy.mil> writes:
> > On Friday 16 July 2004 11:02 am, Richard Welty wrote:
> > > the kernels i've been using are:
> > >
> > > $ rpm -q kernel
> > > kernel-2.6.6-1.435
> > > $ rpm -q kernel-smp
> > > kernel-smp-2.6.6-1.435
>
> i saw slightly newer kernels, so i updated. it didn't help.
>
> > > when i try to bring the SMP kernel up, it starts but after it reports
> > >
> > > using cfq io scheduler
> > >
> > > ide0 at 0x1f0-01f7, 03f6 on irq 14
> > > ide-cd: cmd 0x5a timed out
> > > hda: lost interrupt
> >
> > Total shot in the dark since I don't have a box like this, but I'd
> > disable DMA on the failing device (assuming that it is on).
>
> well, i couldn't find a way to disable DMA in the bios, but i did
> physically remove the IDE CD-ROM drive, and it's running
> just fine with the SMP kernel.
>
> how to get 2 CPUs *and* a CD-ROM drive at the same time, now that's
> the question.
>
> richard
> --
> Richard Welty                                        
> rwelty at averillpark.net Averill Park Networking                             
>            518-573-7592 Java, PHP, PostgreSQL, Unix, Linux, IP Network
> Engineering, Security


You can add "ide=nodma" to your grub command line. Since all your disks are 
SCSI and you only use the IDE interface for the CD, it won't slow down your 
disks.

Regards,

John Wendel