5.4-RELEASE - aac0: COMMAND 0xXXXXXXXX TIMEOUT AFTER XXX SECONDS

[DK Duncan]

Hi Scott et al -

I have an older Supermicro 370DL3 SMP motherboard with an Adaptec 2810sa
controller with 8 300GB SATA Maxtor drives attached in Raid5.  Under
heavy load I get errors of the form:

        aac0: COMMAND 0xXXXXXXXX TIMEOUT AFTER XXX SECONDS

When this occurs, the system is alive but the filesystem is hung.  A cold boot
clears the condition.  Under lighter loads it appears to be fine.  The OS is
FreeBSD 5.3-RELEASE upgraded from source to 5.4-RELEASE with acpi disabled.
The problem is reproducible by extracting a large tarball which is present
on the filesystem to the same filesystem.  What information do you need to
debug the problem?

        
        mutha<86> uname -a
        FreeBSD mutha 5.4-RELEASE FreeBSD 5.4-RELEASE #0: Sun Jun 26 09:54:14 PDT 2005
        duncan at mutha:/usr/src/sys/i386/compile/MUTHA.smp.pcm  i386
 
        mutha<87> more /usr/src/sys/i386/conf/MUTHA.smp.pcm
        # 
        # 
        
        include GENERIC
 
        options SMP
        
        # For non-pnp sound cards with no bridge drivers only:
        #device         pcm0 at isa? irq 10 drq 1 flags 0x0
        # 
        # For PnP/PCI sound cards
        device  sound
        device  "snd_es137x"


        # 
        # For ata
        device atapicam


Thanks and Best Regards,


~Don
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