On Wed, Sep 2, 2009 at 2:48 PM, Jonathan Nell<crtrn13@xxxxxxxxx> wrote: >>>> >>>> I developed a tool to dump all the SCSI cmds to SCSI device. The idea >>>> is, every SCSI host controller driver should give the queue_command >>>> fucntion. This is the entrance for SCSI request to SCSI host >>>> controller driver. I replace this function with my own dump methord >>>> and after dump, I restore this function. >>>> >>>> I do't know if it's what you need. >>> >>> That would be great! Could you send the code to me? How does your tool >>> hook into queue_command? > >> The code could be found at >> http://blog.chinaunix.net/u/15278/showart_1966962.html. You need do >> some modification according your kernel. >> It's very simple to hook the queue_command. I just backup the original >> function pointer somewhere and after dump, I restore it. Pls refer the >> code for detail. >> > > This is great - thanks! I assume I can just modify this slightly to > dump the data as well (and not just the cmd)? Of course, when you get the scsi cmd, you can get the request where data lives in. BTW, I don't use this driver under heavey load. There might be some performance issue. You can kick off the filter part. Thanks, Gang > -- Xie Gang -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
