Re: Simulating faulty disk

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On 10/20/2011 05:46 PM, Yathindra wrote:
 >dmsetup create d0 --table="0 `blockdev --getsize /dev/sdb` delay
/dev/sdb 0 500"
device-mapper: reload ioctl failed: Invalid argument
Command failed

In /var/log/messages I see this,
device-mapper: ioctl: error adding target to table

I don't see this here:

# dmsetup create d0 --table="0 `blockdev --getsize /dev/sdb` delay /dev/sdb 0 500"
# dmsetup info -c d0
Name Maj Min Stat Open Targ Event UUID
d0               253   3 L--w    1    1      0
# dmsetup create f0 --table="0 `blockdev --getsize /dev/mapper/d0` flakey /dev/mapper/d0 0 9 1"
# dmsetup info -c f0
Name Maj Min Stat Open Targ Event UUID
f0               253   4 L--w    0    1      0

This is using the f15 2.6.40.3 (aka kernel-3.0) with a locally compiled dm-delay since it's not enabled in the Fedora kernels.

Might want to move this thread over to dm-devel if you're having trouble with it.

Regards,
Bryn.
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