Thanks. In fact, using md-faulty also do that,but must do more steps. So I think add it in md-faulty.
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majianpeng
2012-05-18
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发件人：George Shuklin
发送日期：2012-05-17 19:49:26
收件人：majianpeng
抄送：linux-raid
主题：Re: Add set bad lba function in md-faulty module.
On 15.05.2012 15:49, majianpeng wrote:
> Hi all:
> In order to test md code, sometime we need simulate read/write harddisk error.
> Using hdparm --make-bad-sector to simulate read error.But I did not find way of simulating write-error.
> I tested md-faulty module, it can do this.But it is not provide the function link hdparm --make-bad-sector,which did not set lba.
> Using hdpamr --make-bad-sector to simulate read error can cause some problem.
> It will cause ata commnd reset,disk reset and so on.It take too log time.
> So I think add a function in md-faulty which can set read/write lba.
> How about ?
>
>
How about using an iscsi at localhost? Export disk via ISCSI target,
connect to it with initiator. With iptables and open-iscsi settings you
can precisely control error behavior and imitate all kinds of errors
(including timeouts).
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