Re: when does it become faulty disk

[raz ben jehuda <razb@bitband.com>]

On Mon, 2005-06-20 at 16:45, Michael Tokarev wrote:
> Molle Bestefich wrote:
> > Raz Ben-Jehuda(caro) wrote:
> > 
> >>I have managed to make the kernel remove a disk
> >>from my raid even if this raid is "/" . I did it by adding a line
> >>in ata_scsi_error that remove the ata disk from the raid array.
> >>This means that when the first error ocurrs on a disk It is removed
> >>from the array.
> >>Well, this is not the best thing to do..
> >>Question is :
> >>When does a disk become faulty ?
> > 
> > 
> > When trying to read sectors from a disk and the disk fails the read:
> >  1.)  Read the data from the other disks in the RAID and
> >  2.)  Overwrite the sectors where the read error occur.
> 
> Note: this is NOT how current linux softraid code works, it's
> how it *supposed* to work.  And right now, linux raid code
> kicks a drive out of the array after *any* error (read or
> write), without trying to "understand" what happened.
no accurate.
I have raid1 over "/" and whenever I pull out one of the disks
the system hangs. in order to fix it I added to ata_scsi_error()
ata_port_disable(). 
> /mjt
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-- 
Raz
Long Live The Penguin