Re: Request for review of Linux iSCSI driver version 4.0.0.1

[Brian King <brking@us.ibm.com>]

James Bottomley wrote:
>>If the generic infrastructure which you mentioned does not exist now and in 
>>case there is a plan to do one such thing is there any framework for that?
>>Wouldn't that require a kernel API which is capable of both 
>>"adding new luns" and "deleting luns which no longer exist"?
> 
> 
> Well, a hotplug event feeds certain information into the environment
> when it triggers the call.  All we really need is a wrapper in SCSI to
> add the SCSI information to the environment and trigger the event in a
> generic fashion.
> 


This would be wonderful. I am currently writing a LLD and was going to 
use the scsi_add_device and scsi_remove_device interfaces to add/remove 
devices as the devices show up and disappear at runtime, but this was 
going to require me to go through a bit of complexity using a workqueue 
to do it at task level. If a LLD had interfaces to do this that could be 
called at interrupt context these interfaces would be much easier to use.



-- 
Brian King
eServer Storage I/O
IBM Linux Technology Center