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Today one of the my computers have strange log.

At 8:00 both hard disks start to have errors like this:

Feb  9 07:24:48 bill2 kernel: ad4: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=62726607            
Feb  9 07:24:48 bill2 kernel: ad6: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=62726607            
Feb  9 07:25:46 bill2 kernel: ad6: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=62726191            
Feb  9 07:48:06 bill2 smartd[1526]: Device: /dev/ad4, ATA error count increased from 1 to 2                       
Feb  9 07:48:08 bill2 smartd[1526]: Device: /dev/ad6, ATA error count increased from 1 to 3 

Full log file, smartctl output and other data I uploaded to gist. Here is a link: https://gist.github.com/korjavin/4745963

My question is: may i believe that two hard disk , without error , suddenly get problem in one day / one hour? Or I should find other reason of this? How?

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closed as not a real question by mgorven, Tom O'Connor, Ward, mdpc, Khaled Feb 10 '13 at 7:50

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Are they both part of an RAID array where one just failed and was the other heavily stressed while the array was reconstructed> (Using a hot spare). –  Hennes Feb 9 '13 at 17:01
    
yes, they both providers for gmirror raid1. So you suppose, that true, and both of them start to die? –  Korjavin Ivan Feb 9 '13 at 17:06
    
I think it is possible, but not very likely. Still, there is the bathtub curve for drives. –  Hennes Feb 9 '13 at 19:26
    
are you really running PATA drives? –  the-wabbit Feb 9 '13 at 21:00
    
Its sata, as i know. –  Korjavin Ivan Feb 10 '13 at 4:00

1 Answer 1

up vote 2 down vote accepted

WRITE_DMA UDMA ICRC error is a detected transmission error which occurred on a WRITE_DMA command.

I am not too familiar with FreeBSD, but this seems to be an often-documented issue with FreeBSD machines using certain controller types:

https://wiki.freebsd.org/JeremyChadwick/ATA_issues_and_troubleshooting

Also, a hardware failure of the controller or broken cabling is to be considered as the possible cause of the fault.

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