RE: Reloading multipathd?

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On Wed, 2007-11-07 at 16:44 +0100, Domenico Viggiani wrote:
> > -----Original Message-----
> > From: dm-devel-bounces@xxxxxxxxxx 
> > [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of S. J. van Harmelen
> > Sent: Wednesday, November 07, 2007 4:19 PM
> > 
> > On Wed, 2007-11-07 at 08:33 -0500, Paul Cote wrote:
> > > Did you do a rescan so that the O/S "sees" the new LUN? 
> > 
> > Nope... Could you tell me how to do that? And does a rescan 
> > have any effect on already active LUN's?
> 
> # Send a LIP (loop initialization primitive) to the fabric 0
> echo "1" > /sys/class/fc_host/host0/issue_lip 

Thanks for you help. But the MD3000 has SAS HBA's, so I don't have the
issue_lip file on my system.

Any other way to get the same results for a SAS HBA?

And once again... Does this interrupt the LUN's that are already
attached and in use?

Thanks!!

> 
> # Scan SCSI bus 0:
> echo "- - -" > /sys/class/scsi_host/host0/scan
> 
> # Send a LIP (loop initialization primitive) to the fabric 1
> echo "1" > /sys/class/fc_host/host1/issue_lip 
> 
> # Scan SCSI bus 1:
> echo "- - -" > /sys/class/scsi_host/host1/scan
> 
> # sometime is needed to repeat above steps two times?
> 
> # Check /var/log/messages and /proc/scsi/scsi
> 
> # Create multipath
> multipath -v2
> multipath -ll
> 
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