Re: Mapping sectors to have errors

[Yathindra <ydev@xxxxxxxxxxx>]

Hi Milan,

I'm trying to inject random sector errors using device mapper.

Suppose I want to inject some 50 errors on random sectors, is their a 
way to do
this without having to reload the table every time.

Thanks,
Yathi

On 10/28/2011 1:46 PM, Yathindra wrote:
> Hi Milan,
>
> It worked! Thanks so much ! :)
>
> Have a great weekend.
>
> On 10/28/2011 1:42 PM, Milan Broz wrote:
> > On 10/28/2011 04:31 AM, Yathindra wrote:
> > > I'm trying to create a disk and map some sectors to have errors on 
> > > them.
> > >
> > > I tried this,
> > > echo "0 100000 linear /dev/sdb 0 100000 480081250 error"| dmsetup 
> > > create bad_disk
> > > device-mapper: reload ioctl failed: Invalid argument
> > > Command failed
> > Try
> > echo -e "0 100000 linear /dev/sdb 0\n100000 480081250 error"| dmsetup 
> > create bad_disk
> >
> > Milan

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