Re: Stacked array data recovery

[Ramon Hofer <ramonhofer@bluewin.ch>]

On Mon, 2012-07-02 at 07:46 -0400, Phil Turmel wrote:
> Hi Ramon,
> 
> On 07/02/2012 06:12 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:
> > 
> > sdj:
> > http://pastebin.com/raw.php?i=V60FJ4wC
> > 
> > sdk:
> > http://pastebin.com/raw.php?i=cgfq3202
> > There are some pre-fail and one FAILING_NOW messages.
> 
> Absolutely take this drive back to your dealer.  It has re-allocated
> over a thousand sectors.  In my opinion, a drive should be put on a
> short-term (~3month) replacement list for the next convenient
> opportunity as soon as the first sector gets relocated.  If you get more
> relocations in quick succession, replace immediately.

Ok, thanks!
I will bring it back.

I've never had to replace a disk so far. Does it depend on the dealer or
do the manufacturers replace them already when sectors get reallocated? 


> > sdl:
> > http://pastebin.com/raw.php?i=tipjbpxu
> 
> Interesting.  This drive claims to support SCTERC.  I was under the
> impression the EARS drives didn't.  Could you please show the output of
> "smartctl -l scterc /dev/sdl" ?

Sure:

~# smartctl -l scterc /dev/sdl
smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen,
http://smartmontools.sourceforge.net

Error SMART WRITE LOG does not return COUNT and LBA_LOW register
Warning: device does not support SCT (Get) Error Recovery Control
command


Cheers
Ramon