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Re: [dm-devel] Mapping sectors to have errors



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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