Re: I2O enhancement for Adaptec management software

[Markus Lidel <Markus.Lidel@shadowconnect.com>]

Hello,

James Bottomley wrote:
>>The patch is for i2o_config, not for dpt_i2o! These are different 
>>drivers and have (from the architecture view) not much in common. 
>>dpt_i2o is a driver which let access to the disks entirely using the 
>>SCSI subsystem. The i2o subsystem uses i2o_core and i2o_block to access 
>>disks (which doesn't use SCSI at all), and also have an SCSI driver, 
>>which let access to each connected disk (i2o_scsi). But the i2o_scsi is 
>>not needed for normal disk access.
> There appears to be some confusion:  SG_IO is a *block* layer ioctl (it
> happens to be in the slightly misnamed drivers/block/scsi_ioctl.c file,
> but it is usable for all block devices).

As promised i have looked at the sg_io() function, but i think it's not 
possible to use this function, because it is for block devices, but the 
i2o_config uses a char device to communicate with the controller. I 
didn't find a function, which makes the same as sg_io, but only with 
char devices.

Any suggestions, what to do in this case?


Best regards,


Markus Lidel
------------------------------------------
Markus Lidel (Senior IT Consultant)

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