Re: detecting/correcting _slightly_ flaky disks

[berk walker <berk@panix.com>]

Michael Stumpf wrote:
> Bill Davidsen wrote:
>> Michael Stumpf wrote:
>>> This is the drive I think is most suspect.  What isn't obvious, 
>>> because it isn't listed in the self test log, is between #1 and #2 
>>> there was an aborted, hung test.   The #4 short test that was 
>>> aborted was also a hung test that I eventually, manually 
>>> aborted--heard clicking from drives at that time, can't swear it was 
>>> from this drive though.
>>>
>>> Not sure I fully understand the nuances of this report.  If anything 
>>> jumps out at you, I'd appreciate a tip on how you read it.  (to me, 
>>> looks mostly healthy)
>>>
>> For what it's worth, if you are getting hung tests, either your drive 
>> or power supply should be redeployed as a paperweight. My opinion...
>>
> I don't disagree but I'd like to find something more concrete or 
> repeatable, especially given that these give an audible click when 
> failing.  The problem I'm having is that I can't nail down precisely 
> where the problem is, although your suggestion makes a lot of sense.
>
> After running Justin's suggested badblocks test, I'm kind-of-disturbed 
> to see that all these drives are passing with flying colors.
>
> Firmware issue?  WD had it in the past.
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
One nice thing, if your cables are OK, and your power is OK, then you 
can trash the electronics and transplant from a similar drive with bad 
sectors.
-

"load head
seek spindle
unload head"
is not a nice thing for the hardware.

b-