RHEL 5.2 iSCSI Host Freezes When Starting iscsi At Boot

[Harald_Jensas at Dell.com]

Hi,

What about switch configuration?
Did you disable spanning-tree, or configure the ports your iSCSI NICs are connected to as 'spanning-tree portfast'?

If spanning tree is blocking the switch port when iSCSI tries to start that might be causing your issue.


--
Harald Jensås


> -----Original Message-----
> From: linux-poweredge-bounces at dell.com [mailto:linux-poweredge-
> bounces at dell.com] On Behalf Of Nathan Curry
> Sent: 24 July 2008 18:52
> To: John Hodrien
> Cc: linux-poweredge-Lists
> Subject: Re: RHEL 5.2 iSCSI Host Freezes When Starting iscsi At Boot
> 
> After reading into my problem a bit more I found that most people just
> used the _netdev option in fstab to get that to work.  The problem I am
> seeing is that iscsi hangs in the middle of starting up at boot.  I
> gets
> to "Starting iscsi" and says that it's trying to connect to the 4
> targets at which point the whole system freezes up.  I can't even use
> the mouse or turn CAPS lock on an off on the keyboard.
> 
> -Nate
> 
> -----Original Message-----
> From: John Hodrien <johnh at comp.leeds.ac.uk>
> Cc: linux-poweredge at dell.com
> Subject: Re: RHEL 5.2 iSCSI Host Freezes When Starting iscsi At Boot
> Date: Thu, 24 Jul 2008 17:13:21 +0100 (BST)
> 
> On Thu, 24 Jul 2008, Nathan Curry wrote:
> 
> > I have setup a new RHEL 5 host on my MD3000i a few days ago and The
> > system won't boot if the "chkconfiig iscsi on" is set.  If I set it
> to
> > off then the system boots up fine and I can start iscsi and see my
> > devices properly.  I believe that the iscsi is starting too soon but
> I
> > am not sure how to change it or if that is actually the problem.  I
> was
> > on the phone with the Dell support techs and it worked for 4 reboots
> but
> > when I setup LVM on the virtual disk and partitioned it the problem
> > started happening again.  If anyone has any ideas I am all ears.
> 
> I don't know whether this is relevent (or more the point, correct), but
> I was
> finding that LVM on iSCSI wasn't picked up, as LVM had already scanned
> for PVs
> before iscsi started.  I just made it scan again by adding:
> 
> vgchange -a y
> 
> in /etc/init.d/iscsi after it'd done the automatic login.
> 
> jh
> 
> 
> _______________________________________________
> Linux-PowerEdge mailing list
> Linux-PowerEdge at dell.com
> http://lists.us.dell.com/mailman/listinfo/linux-poweredge
> Please read the FAQ at http://lists.us.dell.com/faq