RE: SCSI Patches - mostly on/off-line stuff

["Prasenjit Sarkar" <psarkar@almaden.ibm.com>]

[I was told that FCP did not support AENs but I might be mistaken.]

In general, as SCSI becomes more networked, most approaches will want the
initiator to figure out what is the
current list of targets the initiator is connected to, rather than the
targets trying to inform interested initiators whether
the targets are coming on-line or going off-line.

Keeping that in mind, a bus rescan is a better way to go (where a bus is
'virtual' for networked SCSI architectures).

-prasenjit


   Prasenjit Sarkar
   Research Staff Member
   IBM Almaden Research
   San Jose


Venkatesh Ramamurthy <Venkateshr@ami.com>@vger.kernel.org on 01/18/2001
08:20:03 AM

Sent by:  linux-scsi-owner@vger.kernel.org


To:   "'Eric Youngdale'" <eric@andante.org>, Douglas Gilbert
      <dougg@torque.net>, David Brownell <david-b@pacbell.net>
cc:   linux-scsi@vger.kernel.org, linux-hotplug-devel@lists.sourceforge.net
Subject:  RE: SCSI Patches - mostly on/off-line stuff



>     Anyways, my initial question reallly has to do with exactly how one
is
> notified that a new device has appeared and whether a bus scan needs to
be
> initiated or not.   That will control the degree to which we have to
screw
> with things in the mid-layer to support this.
>
     [Venkat] Some of the SCSI devices support AEN, which the low level
driver can use to detect any addition in BUS. I not sure whether all the
scsi device do support it. If this the scsi case low level driver can call
the SCSI ML to add the new device. I dont whether this is a general
solution.


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