Naive question: 2.2.x or 2.4.x drvconfig equivalent in the w

[Gregory Hosler]

I'm not so sure that I would blindly assume that a scsi bus reset would
blissfully do a scsi bus scan. I haven't looked at the code in quite a few
years, but the early incarnations of the scsi layer didn't do a bus rescan
when the bus was reset.

What would be really nice would be the equivalent of support for hot-plugable
as applied to scsi. AFAIAA this is not in either 2.2 or 2.4.

regards,

-Greg


On 16-Jul-01 Mike Brown wrote:
>> Is there a device-specific (perhaps?) way to force a bus reset?
> 
> Take a look at <linux>/include/scsi/sg.h
> 
> One of the ioctl()'s is defined as:
> 
>#define SG_SCSI_RESET 0x2284
> 
> with subcommands:
> 
>#define         SG_SCSI_RESET_NOTHING   0
>#define         SG_SCSI_RESET_DEVICE    1
>#define         SG_SCSI_RESET_BUS       2
>#define         SG_SCSI_RESET_HOST      3
> 
> I gather you could get the job done via something like:
> 
>#define MY_SG_DEV "/dev/sg0"
> 
> int fd = open (MY_SG_DEV, O_RDWR);
> 
> ioctl (fd, SG_SCSI_RESET, SG_SCSI_RESET_BUS);
> 
> 
> -Michael F. Brown, UMass Lowell Computer Science
> 
> email:  mbrown at cs.uml.edu
> 
> "Windows is a 32 bit patch to a 16 bit GUI based on an 8 bit 
>  operating system."        -FAQs (from #linux on efnet) 
> 
> 
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----------------------------------
E-Mail: Gregory Hosler <gregory.hosler at eno.ericsson.se>
Date: 17-Jul-01
Time: 11:19:37

   You can release software that's good, software that's inexpensive, or
   software that's available on time.  You can usually release software
   that has 2 of these 3 attributes -- but not all 3.

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