> -----Original Message-----
> From: open-iscsi@googlegroups.com [mailto:open-is...@googlegroups.com]
> On Behalf Of Konrad Rzeszutek
> Sent: Monday, June 15, 2009 8:39 PM
> To: open-iscsi@googlegroups.com
> Subject: Re: open-iscsi and discover newly created LUN
> 
> 
> > >
> > > On RHEL 5.3 and newer, upstream and probably ubuntu (not sure what
> > > version is in there), you can do
> > >
> > > iscsiadm -m session -r $SID --rescan
> > >
> >
> > Mike -
> >
> > The target can initiates a UNIT ATTENTION with additional sense as
> > "Report LUN data changed", I don't see that currently being handled
> by
> > the SCSI-ML.
> 
> You get that in dmesg? Or is that something the aray can do, but you
> have to configure it?

It is usually programmed into the array firmware. 

> >
> > A rescan may not be necessary if this information is received by the
> > open-iscsi.
> 
> Huh? Why not? I mean if the LUN changed (it changed size for example),
> don't you want to rescan the LUN to pick up the changes?

Not anymore.. Rescanning is a parallel scsi thingie ..see
http://www.t10.org/ftp/t10/document.06/06-411r0.pdf


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