Re: Raid 6, 9 1.5T days drives, 2 "fail" one after the other

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Hi Neil, Dragos,

On 02/18/2013 07:39 PM, NeilBrown wrote:
> On Thu, 07 Feb 2013 10:39:53 -0500 Dragos Dobrescu
> <dragos@xxxxxxxxxxx> wrote:
> 
>> Hi, I need some help. I noticed the server was in recovery mode. It
>> had just dropped a "faulty" drive. I checked the drive and it
>> looked like it was working. When the recovery was done I added the
>> drive back, after recreating the partition.
>> 
>> As soon as I did it, mdadm informed me that it redropped it and
>> dropped another drive at the same time. I removed both driver and
>> added a brand new drive (second is on the way) which the system
>> accepted and started recovery.
>> 
>> What I don't understand is that I plugged the drives on another
>> computer with sata-USB adapter and performed a full smart checkup
>> which returned successful, minus a few bad sectors and some
>> warnings of pas over heating. What is going on? Thank you for your
>> help.
>> 
>> Dragos
>> 
> 
> No one replied?  I felt sure someone else would.

No one else saw it.  The message you quoted is not in the archives, and
I never got one directly.

> Maybe you  have a problem with your driver card, or with a cable, or 
> something.

Or normal UREs.  Dragos, please also share your smartctl reports (with -x).

> Normally if md stops a driver there will be messages in the kernel
> log about access failures.  Do you still have all the logs from when
> this  happened? Are there any messages from the kernel?
> 
> NeilBrown

Phil
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