High disk load +mount/atacontrol/NFS/SMBFS crashes the system

Alejandro Pulver alepulver at FreeBSD.org
Tue Apr 24 01:00:00 UTC 2007


On Sun, 22 Apr 2007 23:26:33 -0300
Alejandro Pulver <alepulver at FreeBSD.org> wrote:

[...]
> The strange crash in the new 6.2 machine when using atacontrol is still
> unexplained and I couldn't make it happen again (it now refuses to
> switch to UDMA100 mode when it is SATA300, maybe they aren't supported
> in SATA drives, but the other time it just crashed without advise).
> 

In the machine which was recently upgraded to 6.2 using "atacontrol"
when the disk is reading/writing crashes the system half or more of the
times.

Maybe it's a BIOS or hard disk issue, but I can't try it in the new
machine because it uses "SATA300" and other modes aren't documented in
the manual page. The other machine supports UDMA* modes.

Otherwise there is a problem in "atacontrol". When this happens, the
disk light keeps blinking but the system freezes, and keeps waiting for
the disk to respond forever.

Best Regards,
Ale
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