How to Create and Add Citrix XenServer Storage Repositories – Part 4

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Rob Turner

He is an Instructor of Computer Technology with Ball State University where he currently teaches all of the departments Linux courses and co-teaches Cisco networking courses. He is an avid Debian user as well as many of the derivatives of Debian such as Mint, Ubuntu, and Kali. Rob holds a Masters in Information and Communication Sciences as well as several industry certifications from Cisco, EC-Council, and Linux Foundation.

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2 Responses

  1. Rob Turner says:

    Daniel,

    Thanks for the response. Quite a few questions in the post but let’s try to get them answered for you.

    Clonezilla is a fantastic bit-stream copy software. As such it should copy all information from the chosen disk device. Now the question about whether or not the UEFI system will be bootable on XenServer after restoring the image, I don’t have a definite answer for as I have never tried. A quick search through the Xen hypervisor site suggests that guest EFI support is there but limited. I will research this and see if I can get a working proof of concept though.

    I may be misunderstanding your second paragraph but in order to install XenServer you’ll have to either cleverly partition the disk on your system to install XenServer/Windows side by side but the normal install process will overwrite anything on the disk to which is is being installed. So you’ll end up installing XenServer to your HP machine, building or importing your Windows machine’s disk image as a guest on the XenServer, and then you’ll either use VNC, Xencenter, Xen Orchestra, or OpenXenManager to connect to the console session of the running Windows virtual machine. To my knowledge, there isn’t a way to connect to the console session of a DomU guest from Dom0.

    To make working in Dom0 easier, remember that the CLI has auto complete so if you start typing part of a UUID and hit the tab key, XenServer will automatically fill in the rest of the UUID for you. According to Citrix any modification to Dom0 is considered experimental and as such they typically won’t provide any assistance so I definitely wouldn’t install anything on production XenServer installs. Disclaimer out of the way, XenServer runs on CentOS so in theory, anything that can be done in CentOS can be done in XenServer. Even on my test systems though, I don’t modify anything in Dom0 simply for stability’s sake.

    The SAMBA ISO share is a separate system it isn’t part of Dom0. Now the SAMBA share can be a guest/virtual machine running on the XenServer; I’ve done that many times.

    Please let me know if there is anything else that needs clarified or if you have more questions as a result of this answer!

  2. Daniel says:

    The Citrix XenConvert 2.4.1 Guide on page 3 under Known Limitations states: “Firmware Type – XenConvert can only convert from a host machine with BIOS firmware – not Extensible Firmware Interface (EFI).” Will imaging Clonezilla to P2V circumvent this issue? If not, would a fresh install from MS-Windows recovery disks under “legacy mode” instead of UEFI resolve the issue. That is something I can try as I have a new drive and I can mess around with it some. I am trying to us XenServer 6.5 on a HP h-1520t. Would I be better off using another p2v conversion method or different virtualiztion software?

    I am trying to setup up Xenserver 6.5 on my desk top. I have assumed that after it is all set up, I will still be able to use windows and all my applications just as before from the same desk, keyboard, monitors and the same computer which will be my XenSeerverHost via VNC into a virtual machine. When I read about VNC it seems that people are using a different computer such as my Old_Goat that I am running OpenXenManager on to VNC into the VMs. Even after reading all your wonderfully through XenServer articles I still have not been able to reach a definite conclusion on this issue so I have to ask. Can I use a VNC viewer to work from my XenServerHost machine? In other words, can a person VNC from dom0 into a VM on the same machine?

    There are so many commands/features not available in the XenServer console. I think of gpm’s mouse copy and paste when I am typing in the UUID’s. It has yum but not apt-get. Are there packages you like to install on dom0 to make life work better.

    Are you thinking of Dom0 or a VM when you say to set up samba as an ISO library.

    I had in interesting problem with XenServer 6.5 booting on a HP h-1520t. It never booted until I accidently discovered it would boot if a bootable cd was present in the drive and triggered the any-key message. I took 4 pages of notes as I went through all kinds of boot order setting on the computer. It does not matter if the legacy hard drive is before or after the cd, XenServer 6.5 only boots for me after the “press any key to boot from the cd” message is triggered and times out. I think it is a firmware problem on this model (I have the latest firmware). I think it might be able to boot if the firmware boots another drive with a boot loader (grub) to boot XenServer 6.5 but I have not tried it yet.

    Sorry for the number of questions and the length. You are the best source I have found and I read it. I have struggled for 2 weeks now.

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