[CentOS] 3ware disk failure -> hang

[Les Mikesell]

On Fri, 2006-01-06 at 11:39, Bryan J. Smith wrote:

> > Jan  6 01:04:10 $SERVER 3w-xxxx[2781]: ERROR: Drive error
> > encountered on port 3 on controller ID:2. Check cables and
> > drives for media errors. (0xa)
> 
> Yes, the drive failed.
> 
> Had you used the 3Ware's intelligent hardware RAID, it would
> have hidden the drive disconnect from the system.  You'd see
> a log entry on the failure, and that the array was in a
> "downgraded" state.
> 
> Instead, you're using software RAID, and it's up to the
> kernel to not panic on itself because a disk is no longer
> available.  The problem isn't the 3Ware controller, it's the
> software RAID logic in the kernel.

That doesn't look like an md device error, it looks like
an IDE driver kernel error that never made it up to the
raid logic.

-- 
  Les Mikesell
   lesmikesell at gmail.com