Re: Mapping sectors to have errors
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Hi Joe, I tried it the other way but when I specify error it doesn't seem to take the start sector > 0.# echo "0 `blockdev --getsz /dev/sdb` linear /dev/sdb 0" | dmsetup create bad_disk
# dmsetup table bad_disk: 0 488281250 linear 8:16 0 # echo "100000 488181250 error" | dmsetup load bad_disk << This failed device-mapper: reload ioctl failed: Invalid argument Command failed # echo "0 100000 error" | dmsetup load bad_disk << This worked Any ideas? Thanks, Yathi On 10/28/2011 3:11 AM, Joe Thornber wrote:
On Thu, Oct 27, 2011 at 08:31:00PM -0600, Yathindra wrote:Hi, 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 I have put in the right arguments but not sure why it fails.You have 2 target lines concatenated onto the same line there.
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