From mboxrd@z Thu Jan  1 00:00:00 1970
From: Malahal Naineni <malahal@us.ibm.com>
Subject: Re: Rescan for new LUNs
Date: Thu, 1 Jul 2010 11:21:04 -0700
Message-ID: <20100701182104.GB12613@us.ibm.com>
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	<20100701010738.GA24883@us.ibm.com>
	<230ED15F81AFD3409345FFA4E565F0E50B8B588B@NDHV3000.na.corp.mckesson.com>
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Allen, Jack [Jack.Allen@mckesson.com] wrote:
> Something to some file is not very helpful. And the other LUNs are in
> use. I am just trying to keep from having to reboot if I really do not
> need to.

I said what I said because the exact file depends on how your LUN is
connected. Here is some useful info though! For each scsi host, there
should be a sysfs file "/sys/class/scsi_host/hostN/scan". If you know
the exact host number, say "2", then you can do the following to rescan:

echo '- - -' > /sys/class/scsi_host/host2/scan

If you don't know the host number, then try on all of them.

Thanks, Malahal
PS: try running 'find /sys -name scan' to get all the files and chose
what ever you want to scan.