On Thu, 1 Feb 2001, John Jasen wrote:
> The system in question is an API UP1100 based system, running 4 Maxtor
> 40gb IDE drives off the ALI M15x3 chipset.
> This applies to kernel 2.4.0 and 2.4.1.
> The drives are identified as follows from hdparm:
> Model=Maxtor 54098H8, FwRev=DAC10SC0, SerialNo=K80F1ZFC
> Is also has an Adaptec 29160 SCSI card, running a solid state disk and an
> AIT tape library.
> Upon placing any heavy I/O load on any of the disks (dd if=/dev/*d*
> of=/dev/null) the screen flashes a few times, and then the system locks
> hard -- no sysrq, no control-alt-del, no pings, no nothing.
> It will also hang and lock hard on fscking corrupted filesystems under
> 2.4.0 and 2.4.1.
> Interestingly enough, I tried 'dd if=/dev/zero of=/tmp/dd.img bs=4096
> count=10000' and it also locked hard, after printing messages to the
> effect of:
> EXT2-fs error: (device info) allocating block in system zone -- block
> (block numbers).
> stock RH 2.2.16-3 works peachy.
> I've tried various options with compiling in and out the ALI chipset, PCI
> DMA, drive DMA, and IRQ sharing, but without all four of those enabled,
> the system freezes at identifying the IDE device partitions, like so:
> hda: lost interrupt
> lost interrupt
> lost interrupt
> I've heard one other report of similar problems on the linux-kernel
> mailing list, and at least one other on the axp-list.
> On Thu, 1 Feb 2001, Michal Jaegermann wrote:
> > Date: Thu, 1 Feb 2001 09:23:42 -0700
> > From: Michal Jaegermann <email@example.com>
> > To: John Jasen <firstname.lastname@example.org>
> > Cc: email@example.com
> > Subject: Re: 2.4.1 not fully sane on Alpha - file systems
> > On Thu, Feb 01, 2001 at 10:46:12AM -0500, John Jasen wrote:
> > > On Wed, 31 Jan 2001, Michal Jaegermann wrote:
> > >
> > > > I just tried to boot 2.4.1 kernel on Alpha UP1100. This machine
> > > > happens to have two SCSI disks on sym53c875 controller and two IDE
> > > > drives hooked to a builtin "Acer Laboratories Inc. [ALi] M5229 IDE".
> > >
> > > ALI M1535D pci-ide bridge, isn't it? That's what the specs on
> > > API's webpage seem to indicate.
> > 'lspci' claims that this is:
> > "07.0 Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV]"
> > >
> > > Try this for fun: dd if=/dev/hda of=/dev/null bs=4096, and see if it
> > > cronks out.
> > Probably.
> > > In my case, any serious I/O on the IDE drives quickly results in pretty
> > > technicolor on the VGA screen, and then a hard lockup.
> > No, no technicolor or other sounds effects. The whole thing just
> > locks up with a power switch as the only option.
> > > Furthermore, after power-reset, 2.4.x, x=0 or 1, cannot successfully fsck
> > > the drives. It hangs after about the 2nd-3rd partition, again in a hard
> > > lockup.
> > My box is much healtier than that. Regardless if I booted into a file
> > system on a SCSI drive or on an IDE drive (I happen to have those
> > options although I prefer IDE - I have there something which I can loose
> > without any real pain :-) I can still fsck drives healthy after the
> > crash but I did NOT risk fsck under 2.4.1. Things looks way too screwy
> > for this.
> > >
> > > My WAG is that there are problems in the ALI driver.
> > Possibly, but I crashed the whole thing without mounting anything from
> > IDE drives at all. There are still there but unused. I simply managed
> > to get something in logs for the case described. Note that errors
> > I quoted are from a device 08:05, i.e. SCSI driver (/dev/sda5 to be
> > more precise). When my compiler went bonkers and started to read
> > clearly some random stuff instead of sources then the whole action was
> > happening on a SCSI drive.
> > Michal
> > -
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> -- John E. Jasen (email@example.com)
> -- In theory, theory and practise are the same. In practise, they aren't.
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