John Baldwin wrote:
On Tuesday 10 February 2009 9:54:04 am Matt Hempel wrote:
Dual Xeon 1.8 GHz with hyperthreading. 2 Gigs of Memory. Server ran
4.11 successfully in production for 5+ years.
http://www.supermicro.com/products/system/1U/6013/SYS-6013P-8+.cfm
Boot fails more than 50% of the time running 7.0/7.1. Either it panics
after failing during the APIC check (at the beginning of boot) or at
"Trying to mount root from ufs:/dev/mirror/gm0s1a".
Panic'ced boots report failures on two different AP#s (2 and 3) and two
different PHY#s (6 and 7). See below.
Look for a BIOS update. The last time I saw this, some weird interaction with
SMM was interfering with the delivery of the INIT and/or STARTUP IPIs. A
BIOS update that included newer microcode for the CPUs in question fixed the
issue. For the boxes I was testing, if I disabled USB legacy compat (which
would result in fewer SMM traps during boot), then the machines would fail to
boot every time. With USB legacy compat enabled, they would fail
occasionally.
The BIOS on the server is from 3/2002. The last released Supermicro
BIOS is from 11/2003.
I was incorrect about the model of the server (these boxes are remote).
http://www.supermicro.com/products/system/1U/6012/SYS-6012P-6.cfm
I disabled hyperthreading in the BIOS and the system will now boot
reliably with an SMP 7.1 kernel. I'm debating whether it's worth the
trouble to update the BIOS when all I'm losing is two virtual processors.
--m
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