Solved

Initializing Disk in Windows 2008R2 VM with iscsi crashes machine

Posted on 2012-03-12
7
739 Views
Last Modified: 2012-03-12
Hi,

I am using a HP Server running VMWare ESXi 5.0.0 with some local storage and also using a ReadyNAS NVX for iSCSI storage. The local storage contains all the vm's OS disks (currently 4 VMs) and the iSCSI will be used for secondary disks in the VMs (for file storage etc)

When we create a second disk located in the iscsi datastore to a virtual machine (powered on or off) and then login to the vm it asks if you want to initialize the disk and gives you the option to choose MBR or GPT. When we click ok the machine stops responding and the only option is to restart the VMware ESXi host to recover. This happens if MBR or GPT are chosen. I have outlined our setup below and troubleshooting steps we have already tried.

HP ML350 G6 Server with local SAS storage for the Virtual Machines OS
Netgear ReadyNAS NVX (firmware 4.2.19) - this has been factory reset
Dedicated nic directly connected between the ML350 and ReadyNAS
Server is running VMware ESXi, 5.0.0, 504890 (with iSCSI software patch)
Jumbo frames has been enabled on ReadyNAS, MTU has been set at 9000 in vmware for vSwitch and VMkernel Port
iSCSI Port Binding enabled in VMware
Static Discovery mode configured on iSCSI Initiator
I have created 2 luns and formatted one as VMFS 3 and one as VMFS5 problem exists with both.
Problem exists on 2 VMs one Version 7 and one Version 8
I have created 50-100GB disk to test.

Troubleshooting
Tried looped through switch
Set MTU to 1500
With and without CHAP and Access Control IQN on readynas

vmkping -s 8784 10.0.0.2 -d
PING 10.0.0.2 (10.0.0.2): 8784 data bytes
8792 bytes from 10.0.0.2: icmp_seq=0 ttl=64 time=0.452 ms
8792 bytes from 10.0.0.2: icmp_seq=1 ttl=64 time=0.444 ms
8792 bytes from 10.0.0.2: icmp_seq=2 ttl=64 time=0.541 ms



Any help is greatly appreciated as I'm running out of ideas!
0
Comment
Question by:skysys
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 121

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 37710810
A quick update the ReadyNAS NVX does not APPEAR on the VMware HCL for ESXi 5.0.

only 4.1 U2

http://www.vmware.com/resources/compatibility/search.php?deviceCategory=san
0
 
LVL 121
ID: 37710815
You may want to contact Netgear and VMware for confirmation, new firmware.

otherwise you could be wasting time.
0
Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

 

Author Comment

by:skysys
ID: 37710857
Hi,

Thanks for the quick response, I have read through your articles, we are not using multipathing or teaming but essentially the setup is the same.
I'm not using the Microsoft iSCSI intiator as I've created a datastore on the LUN and then added a virtual disk to the VM stored in the datastore.

HCL could unfortunatly be the answer, it was working fine with 4.1 U1

Thanks,

Ian
0
 

Author Comment

by:skysys
ID: 37710876
From the Readynas.com forums
For ESXi 5 if using iSCSI you will need RAIDiator 4.2.20 or later. RAIDiator 4.2.20 is currently in beta
0
 
LVL 121
ID: 37710887
Again, it's not currently certfied for use with ESXi 5.0, missing from the HCL.

I would suggest upgrading at your risk.
0
 

Author Comment

by:skysys
ID: 37710898
I think we'll roll back to 4.1 and wait. At least we hadn't upgraded the VM Versions for our servers.

Thanks for your help
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I show you step by step with screenshots to assist you - HOW TO: Deploy and Install the VMware vCenter Server Appliance 6.5 (VCSA 6.5), with some helpful tips along the way.
This article explains how to install and use the NTBackup utility that comes with Windows Server.
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Suggested Courses

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question