Re: Stacked array data recovery

[Ramon Hofer <ramonhofer@bluewin.ch>]

On Mon, 2012-07-02 at 15:27 -0500, Stan Hoeppner wrote:
> On 7/2/2012 5:12 AM, Ramon Hofer wrote:
> > On Die, 2012-06-26 at 15:23 -0500, Stan Hoeppner wrote:
> > 
> >> Regardless, unless the dd commands hung in some way, they should not
> >> show up in top right now.  So it's probably safe to assume they completed.
> >>
> >> So at this point you can try creating the RAID5 array again.  If the dd
> >> command did what we wanted, /dev/sdk should have remapped the bad
> >> sector, and you shouldn't get the error kicking that drive.  If you
> >> still do, you may need to replace the drive.
> > 
> > I have successfully run dd for all the four drives.
> > 
> > But because I couldn't create the raid I ran smartctl again for all of
> > them. It seems that sdk has to be replaced. Here are the outputs:
> 
> > sdk:
> > http://pastebin.com/raw.php?i=cgfq3202
> 
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
> ...
>   5 Reallocated_Sector_Ct   0x0033   133   133   140    Pre-fail  Always   FAILING_NOW 1265
>   7 Seek_Error_Rate         0x002e   103   103   000    Old_age   Always       -       15797
> 196 Reallocated_Event_Count 0x0032   142   142   000    Old_age   Always       -       58
> 197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       14
> 198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       15
> 200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       15
> 
> Yes, the drive is toast.  Above are the indicators.  IIRC, your previous smartctl run showed only a count of 3 for Current_Pending_Sector, but no other errors.  Zero'ing the drive with dd has uncovered the true severity of the drive's problems, as another 1000+ bad sectors were identified by the drive and remapped.
> 
> So yes, the drive needs to be replaced.

Thanks for the explanation!

I brought the drive to my dealer yesterday and could take a new one with
me. :-)
I only had to pay the difference of CHF 10.-


Btw Stan: I wrote to the manufacturer of the damping mats. He told me
that they are isolating. I asked about the value of resistance and if
it's flammable. When I have the answer I will order them...


Cheers
Ramon