Can SCSI commands trigger the reinit of a disabled path?

Can SCSI commands trigger the reinit of a disabled path?

[谢纲]

Hello,

I went through the multipath code and found there was hardware handler
for specified hardware, such as emc.  When init path, it will use the
trespass command given by the handler. Does this mean it only support
the A/PF mode of array? When SCSI commands,  such as SCSI PR, are sent
to a disabled path, will trespass be triggered?

Thanks,

-- 
Xie Gang

Re: Can SCSI commands trigger the reinit of a disabled path?

[Levy_Jerome]

> I went through the multipath code and found there was hardware handler
> for specified hardware, such as emc.  When init path, it will use the
> trespass command given by the handler. Does this mean it only support
> the A/PF mode of array? When SCSI commands,  such as SCSI PR, are sent
> to a disabled path, will trespass be triggered? 

In A/PF mode, with failovermode set to 1 (as it should be for dm-mpio) 
the Clariion array will only trespass LUNs on receipt of an explicit 
trespass command, not on other I/O. 

Jerry Levy, EMC