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SubjectRe: 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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