OVM in a classroom environment

Hi.
For my classes I use Ubuntu 9.04 64 bits and VMWare Server 2.0, and it works great. I make my VMs with the software I need ( mostly centos and Oracle stuff ).
I'm thinking of using Oracle VM since the templates are ready and the centralized management console can save me a lot of work.
Since the servers will be at the same time desktops I have some questions? hope you can help me.
There's a way of installing a Xserver + Gnome for using a VNC client, or SSH tunneling for connecting to local vmachines on the VM Server?
( I'm thinking in making a yum repos or something and update the servers for using em as X/VNC clients ).
The only way of connection to a VM is via VNC?
Regards
FJA

Hi, there must be a misunderstanding, or maybe it's just me not being able to get the needs of a teaching/classroom environment....
You say:
What I really want is use Oracle VM console to admin the VMs in each student desktopWell... To achieve this result, all you need is a desktop PC (windows, linux, whatever) for every student, with a browser onboard...
Sorry but I'm really lost.
This is how it should be, at least in my non-teacher mind:
(STUDENT) --> (DESKTOP PC (BROWSER)) --> (VM MANAGER MACHINE) --> (VM SERVER MACHINE (UBUNTU GUEST 01) (UBUNTU GUEST 02) (...))
Please note that the VM Manager Machine, which is the one where you connect via browser to get to the CONSOLE, can be a Virtual Machine itself, if necessary (e.g. you don't have a physical server available to use as VM manager).
Don't know if we can get to any conclusions... Let me know if the above can be useful to you or not.
Anyway, I agree with you that the docs could definitely be better...
Cheers

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Hello, macpro3000.
Thank you for visiting Apple Support Communities.
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New Windows 2008 guest will not start in OVM 3.0.3

First off - seems I can't open an SR on MetaLink as the Oracle VM product isn't listed (even in the 'All Products' list)... any thoughts on that one?
But here is the real problem I have...
We are trying to create a Win Svr 2008 guest in our OVM 3.0.3 environment.
On machine start, the job shows 'In Progress' and the server is shown as locked.
If we try to open a console window, VNC fails with 'Connection Closed'
I've tried setting "boot='d'" in the vm.cfg file however we still receive the same result.
The host is an IBM x3650 M4 currently hosting 3 other Linux guests.
The current vm.cfg contents are listed below.
And what is the usbdevice='tablet' about? That's a new one on me...
vm.cfg contents:
maxmem = 2048
uuid = '0004fb00-0006-0000-c4d3-dbe06afdbe9d'
vif = []
usbdevice = 'tablet'
OVM_description = 'My test'
guest_os_type = 'windows'
builder = 'hvm'
on_poweroff = 'destroy'
boot = 'd'
vfb = ['type=vnc,vncunused=1,vnclisten=127.0.0.1']
on_crash = 'restart'
on_reboot = 'restart'
vcpus = 2
cpu_weight = 27500
OVM_os_type = 'Microsoft Windows Server 2008'
memory = 2048
cpu_cap = 0
OVM_high_availability = False
disk = ['file:/OVS/Repositories/0004fb0000030000017f66f0f7830adb/VirtualDisks/0004fb00001200008b93d22050b6d019.img,xvda,w', 'file:/OVS/Repositories/0004fb0000030000017f66f0f7830adb/ISOs/0004fb0000150000b3fe1805e0fb692c.iso,xvdb:cdrom,r']
OVM_simple_name = 'WIN2008'
name = '0004fb0000060000c4d3dbe06afdbe9d'

Hi,
I tested the Installation of XEN HVM, PV drivers with a WindowsXP, and the installation works like a charm, and the vm.cfg contains a line looks like:
OVM_domain_type = 'xen_hvm_pv'
So verify your configuration and the vm.cfg looks like (this is for Windows XP configuration ):
vif = ['mac=00:21:f6:00:01:01,bridge=1046c7a7a5']
OVM_simple_name = 'WindowsXP'
vnclisten = '127.0.0.1'
serial = 'pty'
disk = ['phy:/dev/mapper/1scsiid0007,xvda,w', 'file:/OVS/Repositories/0004fb00000300001c27e7a320d1a2cd/ISOs/0004fb00001500007f4025585e14db27.iso,xvdb:cdrom,r']
vncunused = 1
uuid = '0004fb00-0006-0000-26ac-be0bc7773494'
on_reboot = 'restart'
boot = 'dc'
name = '0004fb000006000026acbe0bc7773494'
cpu_weight = 27500
memory = 1024
cpu_cap = 0
maxvcpus = 1
OVM_high_availability = True
vnc = 1
OVM_description = ''
on_poweroff = 'destroy'
on_crash = 'restart'
guest_os_type = 'windows'
usbdevice = 'tablet'
builder = 'hvm'
vcpus = 1
keymap = 'en-us'
OVM_os_type = 'Other Microsoft Windows'
OVM_cpu_compat_group = ''
OVM_domain_type = 'xen_hvm_pv'
I hope this can help you
Best Ragards

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I am setting up an OVM 3.1.1 environment at a customer site who is presenting iSCSI LUNs from an EMC Filer. I have a few questions:
* what is the proper way to discover a set of iSCSI LUNs when the storage unit has 4 unique IP addresses on 2 different VLAN's? If I discover all 4 paths, they present in the GUI as 4 separate SAN servers. The LUNs seem to show up scattered across all 4 SAN servers. By my simple logic, my thinking is that if I were to lose access to one of those SAN servers, that the LUNs that happen to be presented via that SAN server would disappear and not be accessible. I know this isn't the case however because multipath -ll on the OVM server shows me that there are 4 distinct paths to each LUN that I'm expecting to see- and I've verified that multipath is working by downing one of the two NICs that are allocated to iSCSI and I can see that two paths of four are failed, but I can still access the disk just fine. Is this just me not setting things up the right way in the GUI, or is the GUI implemented poorly here and needs to be redesigned so it's clear to both myself AND the customer?
* has anyone used the storage connect plugins for either iSCSI or Fiber Channel storage with OVM? What does it actually do for you and is it easy or easier than unmanaged storage to implement? Is it worth the hassle?

Here are the notes I had written down:
== change iSCSI default timeout in /etc/iscsi/iscsid.conf for any future connections ==
* change node.session.timeo.replacement_timeout from 120 to 5
#node.session.timeo.replacement_timeout = 120
node.session.timeo.replacement_timeout = 5
== identify iSCSI lun's ==
# iscsiadm -m session
tcp: [1] xx.xx.xx.xx:3260,4 iqn.1992-04.com.emc:cx.apm00115000338.b9
tcp: [2] xx.xx.xx.xx:3260,3 iqn.1992-04.com.emc:cx.apm00115000338.b8
tcp: [3] xx.xx.xx.xx:3260,1 iqn.1992-04.com.emc:cx.apm00115000338.a8
tcp: [4] xx.xx.xx.xx:3260,2 iqn.1992-04.com.emc:cx.apm00115000338.a9
== confirm current active timeout value before the change ==
cat /sys/class/iscsi_session/session*/recovery_tmo
120
120
120
120
== manually change timeout on each iSCSI lun for current active connections ==
iscsiadm -m node -T iqn.1992-04.com.emc:cx.apm00115000338.b9 -p xx.xx.xx.xx:3260 -o update -n node.session.timeo.replacement_timeout -v 5
iscsiadm -m node -T iqn.1992-04.com.emc:cx.apm00115000338.b8 -p xx.xx.xx.xx:3260 -o update -n node.session.timeo.replacement_timeout -v 5
iscsiadm -m node -T iqn.1992-04.com.emc:cx.apm00115000338.a8 -p xx.xx.xx.xx:3260 -o update -n node.session.timeo.replacement_timeout -v 5
iscsiadm -m node -T iqn.1992-04.com.emc:cx.apm00115000338.a9 -p xx.xx.xx.xx:3260 -o update -n node.session.timeo.replacement_timeout -v 5
== restart iscsi to make changes take effect ==
service iscsi stop
service iscsi start
NOTE: service iscsi restart and /etc/init.d/iscsi restart doesn't seem to work. Only by stopping, then implicitly starting the iscsi service does it seem to work consistently.
== restart multipathd ==
# service multipathd restart
Stopping multipathd daemon: [ OK ]
Starting multipathd daemon: [ OK ]
== Verify new timeout value on active sessions ==
cat /sys/class/iscsi_session/session*/recovery_tmo
5
5
5
5

OVM 3.1.1 DR Configuration

Hi.
We have a business requirement to configure a DR site for our OVM 3.1.1 environment. Any of you dabbled with DR for OVM, if so how and what do we need to do to replicate the VM's from our production site to the DR site?
Maybe I should have ask this fist, it is possible to have a DR site for OVM 3.1.1?
Thanks.

Greetings,
I have had the opportunity to design, deploy and support dozens of Oracle VM DR solutions. Please consult my on-line book named the Oracle Cloud Cookbook, specifically the Oracle Cloud Reference Design chapter section "Oracle VM for x86 Disaster Recovery". I will post the link, although the forum moditator will most likly clip it :-)
<link removed by moderator>
Respectfully,
Roddy
Edited by: rukbat on May 24, 2012 10:46 AM
The OTN forums Terms of use (see link at the bottom ov every page):
http://www.oracle.com/us/legal/terms/index.html
See section 6-J.
Redirecting away from the forum obviates the entire premise of having a free public forum and violates the terms of that TOU agreement.

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Hi guys.
In a weeks' time I will have to migrate ovm's from an OVM 3.0.3 environment to a OVM 3.1.1 environment.
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Booting from Hard Disk...
Error loading operating system
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',hdc:cdrom,r',
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keymap = 'en-us'
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memory = 2600
name = 'Windchill9POC'
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on_reboot = 'restart'
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serial = 'pty'
timer_mode = '1'
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Hi,
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http://www.oracle.com/us/technologies/virtualization/061976.html
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