Re: sata_sil, writing bug with multiple cards?

[7091@blargh.com]

7091@blargh.com writes: 

> Tejun Heo writes:  
> 
>> Sounds awfully similar to the recent nvidia data corruption issue.  It
>> was involving the IOMMU and one of the workarounds was not using IOMMU,
>> IIRC.  Please turn off IOMMU and see what happens.  You can turn IOMMU
>> off by passing "iommu=off" as kernel parameter.  
>> 
>> -- 
>> tejun
> 
> Blast.  I stand corrected - it didn't fix it.  
> 
> I now have 3 300G drives hanging off the add-in card, sda sdb sdc.  I did 
> the following:  
> 
> # Make a RAID5 array of 3 out of the 4 drives I'll eventually be using
> mdadm --create /dev/md6 --chunk=64 --level=raid5 --raid-devices=4 
> /dev/sda1 /dev/sdb1 /dev/sdc1 missing

Here's an odd data point. 

I just broke that array, formatted all three of those partitions seperately, 
mounted and did my ISO copy test. 

All three drives, run one at a time, function fine.  No corruption.