17 votes

Free hypervisor for small configuration

If you are running server 2012 then you already have access to hyper-v. The free hyper-v should serve your needs, you can run the GUI from any client or the 2012 server. This would also get you ...
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  • 23.9k
14 votes
Accepted

Is Administering XenServer like administering CentOS?

Keep in mind that the OS is stripped even if based on a release, as if the gear is in the HCL, you will mostly never use any OS command. Most command you will ever use to administer it would be in ...
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  • 16.2k
10 votes

Is Administering XenServer like administering CentOS?

Primarily, you are committing to work in the XenServer way. This product is essentially an appliance and most of the things that are different between Debian and CentOS are hidden from you anyway or ...
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  • 97k
9 votes

Free hypervisor for small configuration

You can use VMware ESXi for free... You don't necessarily need to use the web interface, and the product works very well with the thick client. Or better, buy a vSphere Essentials license ($500) and ...
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  • 195k
8 votes

Unable to extend partition with gdisk on XenServer 6.5

Let gdisk verify the disk for problems (key v). In my case it identified: The secondary header's self-pointer indicates that it doesn't reside at the end of the disk. If you've added a disk to a RAID ...
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7 votes

Recover a folder deleted with rm -rf on a XEN host

Restore from backup. (Sorry.)
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7 votes
Accepted

Bare metal hyper-visor that supports viewing it's own guests

While it might not look like one, Hyper-V actually is a type-1 hypervisor, because the virtualization layer is placed below the Windows operating system and mediates all hardware access (some time ago,...
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  • 68.4k
6 votes

Free hypervisor for small configuration

Use proxmox, an hypervisor based on KVM (other containers types also supported) all integrated via a web interface. We use this on dell rack servers and it is just perfect for small companies. You can ...
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  • 187
6 votes

/dev/centos/root does not exist after migrating CentOS7 from vmware to Xen

I've been using Starwinds V2V converter https://www.starwindsoftware.com/converter for a similar task a while ago. It supports multiple virtual machine disks formats and does internal hardware ...
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  • 5,606
6 votes
Accepted

USB passthrough (non storage) to XenServer 7 VM

Not supported Sorry. This has been a requested feature since 2007. And as of 2016 it is still unsupported. You may have to buy a dedicated USB-to-Ethernet dongle server. I have no experience with ...
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6 votes
Accepted

How can I convert a iSCSI system disk from XenServer to another format

To get disk image do P2V and/or V2V: attach iSCSI to Windows by ISCSI initialtor. create VHDX using Disk2vhd (https://technet.microsoft.com/en-us/sysinternals/ee656415.aspx) convert VHDX to QCOW ...
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5 votes
Accepted

XenCenter no OS boot parameters field

The first VM is running in PVHVM mode, so QEMU is working with Xen to virtualize the hardware behind the VM. This mode is for OS that does not support Xen paravirtualization in general, like Windows ...
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5 votes
Accepted

RAID 10 Stripe Size for XenServer

I am going to try and sum up my comments into an answer. The basic line is: You should not tinker with the strip size unless you have good evidence that it will benefit your workload. Reasoning: For ...
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  • 40.2k
5 votes
Accepted

CentOS 7 on XenServer 6.5

You need to start the installer with inst.vnc option. Select option "Install CentOS 7" and then press [tab]. Remove 'quiet' and add 'inst.vnc' to kernel command line. Press [enter]. After that, wait ...
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  • 5,147
5 votes

Some questions about xenserver HA

Yes, you can do HA for the scenario you have described. To do so, you create an iSCSI target with multipathing and setup shared volume on top of it. Connect each compute host to target and check the ...
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4 votes

Remote automated provisioning to a XenServer Hypervisor

For the next guy looking into this: The solution is to read the XenServer guest installation guide and use a search engine. ;) First, there's a ansible playbook with nice documentation for setting ...
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4 votes
Accepted

XenServer Configuration Allowing Private Network to Access HyperVisor

not sure about xenserver commands to achieving this If you want private connection between virtual machines running on the same host you can create isolated bridge network and connect necessary vNIC ...
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  • 1,470
4 votes
Accepted

Moving large Xen Virtual Machine

This really should be a comment to yagmoth555's answer, but I don't yet have the rep. I'm aware this is is old, but still posting for future reference. according to http://wiki.xensource.com/wiki/...
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  • 131
4 votes
Accepted

Xenserver 6.5 LSI MegaRAID

There is a new version of the MegaCli: storCli. You can get it from here: http://www.lsi.com/support/pages/download-results.aspx?keyword=storcli In that archive is a Linux folder and you can install ...
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  • 241
4 votes

How to Run Updates Xenserver 6.5 Free Edition

Yes, updating through XenCenter is one of the features of the paid edition. On the free edition you need to (I somehow missed that difference between 6.2 and 6.5 - indeed Xencenter 6.5 allows updating ...
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  • 686
4 votes
Accepted

Unable to Active Xenserver Free License

XenServer 6.2 and 6.5 do not require any license to use the free version: you can use all free features without activation. The "Activate Free XenServer" button in XenCenter dates from versions prior ...
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4 votes
Accepted

Converting Linux machine from XenServer to Hyper-V

EDITED ANSWER: I've been thinking about your problem, and I think that rsync or dd backup/restore might be your best bet. If you are using dynamically growing vhdds, then rsync is probably your best ...
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4 votes
Accepted

/dev/centos/root does not exist after migrating CentOS7 from vmware to Xen

There was the same question on Reddit. The main idea — you need to regenerate initrd. Boot into linux rescue Call dracut -f according to this article.
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4 votes

Ubuntu 16.04 Virtual Machine / XenServer Storage Extend Issue

I am not sure exactly what steps you followed, But below three things need to happen to increase the disk available to a Linux VM: Increase the disk size available to a VM in XenCenter. Increase the ...
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4 votes
Accepted

Is there a command to scan an existing XenServer storage repository for VMs?

It is no such easy way and according to my experience, it is easier to reattach the disks to newly created VMs. However, check this article https://support.citrix.com/article/CTX136342 (Restoring the ...
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  • 5,171
4 votes
Accepted

What would cause a XenServer 7.2 Windows 2019 VM to not release Driver Locked Memory back to the OS?

It is a known bug with Xentools drivers: https://discussions.citrix.com/topic/393322-memory-leak-on-xenserver-72-with-xentools-installed/ https://discussions.citrix.com/topic/391945-topic-memory-leak-...
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  • 8,723
3 votes

export XenServer snapshot as file via console

xe snapshot-list (for snapshot uuid) xe vm-export vm=SNAPSHOT_UUID filename=/mnt/anything
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3 votes

How to unhide a VM in Xen?

Current accepted answer is not safe to execute, as commented by @user160198, it will clear all params. This should have been an answer instead of comment. xe vm-param-remove uuid=<vm-uuid> ...
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  • 169
3 votes
Accepted

File is different when read from NFS server

Ok so it turns out this is a bug with the bxe driver in FreeBSD 10.0-Release specifically The bxe(4) driver can cause packet corruption when TSO (TCP Segmentation Offload) feature is enabled. This ...
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3 votes

XenServer 6.2 VM 100% CPU and 100% memory usage and won't boot

First, I tried to use the Ubuntu server installation CD and go to Recue a Broken System, then tried to reinstall GRUB, but it failed. Then I shut down the failing VM with Force Shutdown. Secondly, ...
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  • 935

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