Re: [smartmontools-support]SMART Reported Disk Errors (Unrecoverable etc)

[Michael M. <mi...@np...>]

Hi Bruno,

> On Mon, Dec 20, 2004 at 10:38:51 +1000,
>   Michael Mansour <mi...@np...> wrote:
> > 
> > My guess is that the drive is having a problem with one sector. If I can 
mark 
> > that sector as bad, the problem will be resolved. If this is the case, how 
can 
> > I mark it as bad?
> 
> One option is to shutdown and boot with a live CD (such as knoppix) and
> copy the block from the good drive to the bad drive.

Hmmm.. but how would I know exactly which block it was?

When you mentioned that I thought maybe then I should just run an fsck on the 
drive and that would likely mark the block bad.

> If you don't want to take the system down, but can afford a lot of
> disk IO for a while, you can fail the bad drive and then add it back
> to the mirror. This will rebuild the entire drive (or at least the
> partitions you failed out of their mirror sets).

Yeah, this is only a test cluster environment so it's no issue to bring the 
server down or hammer it with disk IO.

I'm not too familiar with failing a drive and adding it back, do you happen 
have the steps involved?

I'm using RHEL 3.0.3. I've setup md0 to md5 as mirrored partitions on /dev/hda 
and /dev/hdb.

Michael.