Re: [Veritas-bu] Device Recognition in RHEL5/NBU7

2010-09-24 09:25:09
Subject: Re: [Veritas-bu] Device Recognition in RHEL5/NBU7
From: Heathe Yeakley <hkyeakley AT gmail DOT com>
To: Shekel Tal <Tal.Shekel AT DOT com>
Date: Fri, 24 Sep 2010 08:08:05 -0500
As far as the zoning in the old environment, I've gone over both with
a fine tooth comb and it looks like I've zoned both environments
exactly alike.

As far as multipath software, I have device mapper multipath
configured on both environments.

As far as letting the wizard finish, I decided to try that and about
halfway through the wizard, NetBackup realized it's all the same
devices and presented me with 3 robots and 92 drives (the correct
number). I'm still confused why my 6.0 environment sees 3 robots and
92 drives after the first scan on the 2nd page of the Hardware
configuration wizard whereas my 7.0 environment has to go about
halfway through before it sees all the devices as 3 robots and 92

But hey, at least it's working now.


On Fri, Sep 24, 2010 at 5:39 AM, Shekel Tal <Tal.Shekel AT DOT com> 
> Did you by any chance zone the devices into multiple HBA ports in the
> new config but not the old?
> Perhaps you had powerpath, DMP or some kind of multipath software
> installed before?
> By the way - there shouldn't be any problems with seeing multiple
> devices and NB will only use the ones configured and it shouldn't
> actually go an configure 16 robots and 400 drives. The device config
> wizard will know that some are the same devices - atleast it does in my
> environment.
> Have you let the device config wizard finish - what does it actually
> configure after detecting all the devices?
> -----Original Message-----
> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Heathe
> Yeakley
> Sent: 23 September 2010 15:39
> To: NetBackup Mailing List
> Subject: Re: [Veritas-bu] Device Recognition in RHEL5/NBU7
> To clarify my question:
> I currently have a live NetBackup environment where the master server
> is a Dell 2950 and I have two media servers that are solaris boxes
> running RHEL 4. My department wants to decommission the older boxes
> and move NetBackup to newer boxes, and I wanted to upgrade to 7.0
> anyway, so I decided to kill two birds with one stone and build 1 new
> master and 2 new media, install NBU 7 on the new environment and then
> zone my existing libraries into the new environment and then point all
> the servers I'm backing up to the new environment.
> On my live NetBackup environment (the RHEL4 one), when I go into the
> NBU hardware configuration wizard and scan for devices, the wizard
> comes back and says it sees 3 libraries and 92 drives (which is the
> number I expect to see). When I shut down my live environment and
> bring up the NBU 7 environment and run the hardware wizard, it sees
> like 16 robots and 400 drives. I'm trying to figure out why my NBU
> 6.0/RHEL4 environment is able to see one device file per robot/tape
> drive, but my NBU 7/RHEL5 environment thinks each path is 1 device.
> I'm not sure where to begin researching this issue. I'm in the process
> of skimming through the NBU 7 device configuration manual, the HBA
> documentation and Red Hat's storage documentation.
> Any light that can be shed on this will be greatly appreciated.
> - HKY
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