zpool scrub errors on 3ware 9550SXU

[Ian J Hart]

Quoting ianjhart at ntlworld.com:

> Quoting ianjhart at ntlworld.com:
>
>> Quoting Kip Macy <kmacy at freebsd.org>:
>>
>>>>
>>>> As usual scrubs cleanly on 7.2. Started throwing errors within a  
>>>> few minutes under 8. Then it paniced, possibly due to scrub -s.
>>>>
>>>> It's sat at the DB prompt if there's anything I can do. I'll need  
>>>> idiots guide level instruction. I have a screen dump if someone  
>>>> want to step up. Off list?
>>>>
>>>> Highlight seems to be...
>>>>
>>>> Memory modified after free 0xffffff0004da0c00(248) val=3000000 @  
>>>> 0xffffff0004dc00
>>>> Panic: most recently used by none
>>>
>>> Can you test with recent 7-STABLE? That would tell me whether or not
>>> your hitting a general HEAD issues or problems with the v13 import.
>>
>> It's doing a scrub under 7.2 following another failed test. I'll  
>> pull it up to stable after that.
>>
>> Have more data will post that once I've done a couple a jobs.
>>
>>>
>>> Thanks,
>>> Kip
>
> Here's that extra data.
>
> Updated 3ware/AMCC card firmware.
>
> Enable onboard SATA and fit a 300GB SATA disk. Remove the floppy and  
> fit a second 300GB SATA disk.
>
> Remove the two 500GB disks and replace with 1.5TB units. I can now  
> create two 8 disk raidz2 giving the same 12 disks worth of storage I  
> had with one 14 disk raidz2.
>
> Reinstall the two O/S on the 300GB drives.
>
> <slight tangent>
> May be of use to someone, so bear with me.
>
> Reset to BIOS defaults. Some issues! Disabling sound helps.
>
> Now suspect motherboard BIOS may be part of the problem. Removed  
> both cards and tested each version in turn.
>
> ref: http://www.tyan.com.tw/support_download_bios.aspx?model=S.S2895
>
> Started with 1.04 ended up with 1.04. Versions after, detect the  
> internal; SATA disks as 150 not 300. Most versions lock the keyboard  
> (KVM) when legacy USB is enabled. That's a PITA when you've just  
> taken the floopy disk out.No internal SATA disk settings. Be nice to  
> check the geometry as 7 and 8 sysinstall seem to be behaving  
> differently.
>
> With the cards back in.
>
> Add an ATA disk and CDROM while testing.Easyboot order is SATA0 ATA0  
> SATA1. Fdisk the so far blank ATA disk :)
>
> On board audio clashes with something. BIOS 1.03 and later supports  
> 16 SCSI boot devices. I disabled booting from the RAID card to allow  
> the onboard SATA drives to boot.
>
> Out of space for option ROM error has gone.
>
> AFAIK CPUs are late enough to support DDR400. Check anyway. Clock  
> down to 333Mhz. Still fails.
>
> </slight tangent>
>
> There's one last thing, this BIOS (1.04) does not supply the fix for  
> AMD errata 169. Later BIOS incorrectly detect the onboard SATA disks.
>
> Northbridge System Request Queue may stall.
>
> ref:  
> http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25759.pdf
>
> We don't seem to  have /dev/msr. Could I fix this using (the shiny  
> new) cpucontrol?
>
> Thanks
>
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FWIW this is still reproducable with 8.0-BETA1.

-- 
ian j hart

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