Add set bad lba function in md-faulty module.
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 ?
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majianpeng
2012-05-15
Quoted 10 lines · majianpeng
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).
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.
Quoted 10 lines · majianpeng
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).