Detecting New SAN LUN in RHEL5

[Wayne Pinette]

Kudzu shouldn't work since technically its not a new device.  
 
Wayner 
 
-----Original Message----- 
From: Mike.Young at atosorigin.com 
To: Mike.Young at atosorigin.com <Mike.Young at atosorigin.com> 
list, General Red Hat Linux discussion <redhat-list at redhat.com> 
BCC: Wayne Pinette <Wpinette at tru.ca> 
Creation Date: 4/16 8:18 pm 
Subject: RE: Detecting New SAN LUN in RHEL5 
 
Plus, kudzu doesn't seem to do the trick.  Just tried and got this in
/var/log/messages: 
 
kudzu[21227]: obsolete kudzu ddcProbe called 
 
I'll search /proc for something I can toggle. 
 
Thanks, 
Mike. 
 
-----Original Message----- 
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]On Behalf Of Mark Haney 
Sent: Monday, April 16, 2007 8:17 PM 
To: General Red Hat Linux discussion list 
Subject: Re: Detecting New SAN LUN in RHEL5 
 
James Marcinek wrote: 
> Couldn't one just run kudzu and let it discover the devices? 
> 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Mike Young" <Mike.Young at atosorigin.com> 
> To: "General Red Hat Linux discussion list" <redhat-list at redhat.com> 
> Sent: Monday, April 16, 2007 6:36:09 PM (GMT-0500) US/Eastern 
> Subject: RE: Detecting New SAN LUN in RHEL5 
> 
> I'd like to rescan the fiber card rather than rebooting.  Since RHEL5
doesn't require you to load the drivers of the vendor, none of the tools
(lun_scan, et al) are installed either.  There must be a way of
detecting new LUNs without rebooting - everything else has been pretty
automatic so far (card detection, activation, etc). 
> 
>  -----Original Message----- 
> From:         redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com]  On Behalf Of Mark Haney 
> Sent: Monday, April 16, 2007 5:32 PM 
> To:   General Red Hat Linux discussion list 
> Subject:      Re: Detecting New SAN LUN in RHEL5 
> 
> Young, Mike wrote: 
>   
>> Hello, 
>> 
>> What's the method for detecting newly allocated SAN LUNs in RHEL5?  I
supposedly have a LUN allocated, but I can't see it in /dev/cciss or
/dev/sd*. 
>> 
>> Thanks, 
>> Mike. 
>> 
>>   
>>     
> Did you rescan the SCSI/FC controller?  Or reboot the machine? 
> 
> 
>   
Personally, I'd much rather rescan the card for the new LUNs rather than

run kudzu.  I've not had a lot of success with doing it that way without

rebooting. 
 
 
-- 
Mark Haney 
Sr. Systems Administrator       
ERC Broadband 
 
 
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