XenServer is the virtualization platform Citrix has built around the Xen Hypervisor.

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CentOS 7 on XenServer 6.5

I am having problem trying to get CentOS 7 Graphical installer to work on XenServer 6.5 (Service pack 1). I have used CentOS 7 template. Graphical installer does not work, getting blank screen with ...
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276 views

NAUbackup - Xenserver 6.5 Backup Solutions

Has anybody every successfully used NAUBackups for xenserver 6.5 and had their backups go to a SAN storage repository? I see the default script backs up to an NFS share but I am trying to avoid NFS ...
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302 views

Creating a XenServer VM from the Command-line

I have an issue in which I cannot understand how to create a XenServer Virtual Machine from the command-line. I have installed XenServer on an unused Tower unit, and currently SSH into it from my ...
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2answers
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xenserver snapshot chain too long

I've been running a XenServer 6.2 server for a month or so and recently one of my VMs will not perform snapshots. I receive the error "The snapshot chain is too long" although I have removed all of ...
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2answers
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XenServer 6.0.2 and Cisco 3550 vlan configuration

I am running a couple of xenserver 6.0.2 hosts with multiple vm's on them. All the xen hosts have 4 physical network ports connecting to the cisco. Each port is untagged in xen but is tagged to a vlan ...
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1answer
423 views

Find the current memory setting for dom0 - XenServer 6.5

On XenServer 6.5, I could find how to set the memory settings but I couldn't find how to read the current setting (what's the min, what's the max values) from the command line or by looking into a ...
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364 views

Convert ESXi 5.0 & 5.5 VM's to Xenserver 6.5

I'm looking to convert about 50 esxi vm's to xenserver 6.5. I am running the free version of xenserver 6.5. I've seen posts for the citrix xen converter tool and I've tried out the VMware OVF ...
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17 views

Xenserver 6.5 Remote Power On Hangs

After installing OMSA on both of my PowerEdge M620 blades running xenserver 6.5 I tried using the 'Power On' feature. In xencenter its showing that its trying to power on the server but no progress ...
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946 views

Change Xenserver 6.5 Pool Master

I'm looking to change the pool master because my current pool master is having some hardware issues. I've disabled HA and I came across this script to change the pool master to my other server: xe ...
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353 views

XENSERVER - PCI: Fatal: No config space access function found

We use XenServer to host our VPS and when we tried rebooting the server we get the following error right away PCI: Fatal: No config space access function found We need to edit the grub file for the ...
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1answer
850 views

Xenserver 6.5 Backup Solutions [closed]

I'm looking for a way to backup up VM's in my Xenserver 6.5 environment. I'm open to scripts or installing some tools/clients but it need to opensource. We want to backup to our Dell MD3660i SAN as ...
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362 views

Xenserver 6.5: kernel panic - noapic parameter is incompatible with Xen

Currently I have a server and I want to install XenServer on it, the problem is that I get a kernel panic during the installation procedure. 'kernel panic - not syncing: the noapic parameter is ...
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3answers
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How to use iSCSI MPIO to increase bandwidth with XenServer?

I have a FreeNAS Server with four network interfaces. The iSCSI traffic goes through two of those interfaces, and each interface has one IP address in a different subnet. As example: igb0: ...
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3answers
517 views

netconsole or serial logging in XenServer DomU

I have some problems with stability of Debian guests in my XenServer hosts. To debug this problem I wanted to use netconsole kernel module, unfortunately, because the Ethernet controller is emulated, ...
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0answers
580 views

How to incrementally backup XenServer VMs [closed]

I am looking for a way to backup XenServer (or XAPI) VMs incrementally. backup just changed data every time. without performance penalty, slowing down the server after the backup is done (snapshots ...
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48 views

How are the Debian/Ubuntu Xen netinstall images built?

Xen/XenServer has this nice feature where you can select a Debian or Ubuntu template and point it at some mirror and it will go and download a minimal kernel and initrd which will be used to bootstrap ...
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62 views

XenServer, 32-Bit VM's cant exceed 64GB RAM in total

XenServer 6.5 SP1 - 128 GB RAM on Host Several 32-Bit Linux VM's are deployed, most of them are provisioned with 4 GB or 8 GB of RAM. Once the summarized RAM usage of those 32-Bit VM's reaches 64 GB, ...
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2answers
508 views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
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1answer
63 views

Xenserver Virtual Adapter Limit

My understanding is that as of Xenserver 6.5 and earlier versions, you can only have 7 virtual network adapters per VM. Is there any known (probably unsupported) way around this limitation? My use ...
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232 views

Raid 50 on Dell Perc H700 Integrated Resynching state

I have Raid 50 configured on a Xenserver host with a Perc H700 card and a few weeks ago, replaced a disk which had failed. The raid had rebuilt and I am now checking the status of the array via ...
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0answers
256 views

NAS recommendation for Xenserver [closed]

I know this is a newbie question, but believe me please, I have done extensive research on the web and got some conflicting and old answers (2010-2013). I want to know what people do nowadays (in ...
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1answer
23 views

Is it possible to transfer OpenVZ VPS image to XEN platform?

I'm having a memory related issue with my vps on openvz platform and I guess that my hosting provider is overselling RAM. So, I'm thinking to move on a xen platform since ram cannot be oversold but I ...
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173 views

7Zip extraction on linux is so slow

Extracting 7zip with many small files on linux xfs, extraction speed is so slow. My Test System Environment. System1 : 2vCore/4GB CentOS 6.5 64bit guest on XenServer. System2 : 2vCore/4GB Windows ...
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13 views

XenServer reconnect virtual disk

We have two XenServer's (V 5.5). They are not clustered. They each had LUNs assigned from a SAN. One of the hosts died and no longer boots. We attached the LUNs that used to be on this host to the ...
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32 views

XenServer libguestfs

I am using XenServer 6.5 and I want to mount, modify disk partitions of VHD disk format created by XenServer. For this purpose I need to get libguestfs running as libguestfshas the required features. ...
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1answer
399 views

How to solve XenServer Windows guest time driffting issue?

I do have two different Windows VM guests that seem to be drifting time seriously, reaching an offset of 10-15 seconds in less than a week. Both the Windows guests and the XenServer 6.5 host are ...
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3answers
935 views

XenServer 6.2 - Hetzner host - Additional Subnet Configuration

I have a dedicated server on Hetzner, on which I have installed XenServer 6.2 . The server comes with one public IP address. I purchased an additional subnet containing 6 usable IP addresses, for use ...
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29 views

I can installa “Ossec” on xenserver host? [closed]

I own a xenserver where the host is connected to the public ip network. I allow connections only from my static ip and deny amy other with iptables, but I can install monitoring system like Ossec ...
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1answer
496 views

XerServer 6.5: Can't start xapi after Power outage

I'm currently testing XenServer 6.5 to be used on the production environment of my company. However, whenever I test its behaviour when facing an unexpected shutdown (i.e.: power outage), xapi service ...
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251 views

Acronis Backup Advanced 11.5 for Citrix XenServer 6.5 installation issues

We are trying to deploy Acronis Backup Advanced for Citrix XenServer on a running pool of XenServer's. The documentation of the product isn't quite clear about the procedure of the installation and ...
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5k views

XenServer 6.2 to 6.5 - rebuild servers?

It appears the XenServer 6.5 has been released and it's quite a bit faster than 6.2 in many ways. When I installed 6.2 I accepted the various defaults and end up with a system that is awkwardly ...
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Handling XenServer snapshotting and cloning with ZFS SAN

I'm planning on setting up a XenServer machine that uses a NexentaOS/ZFS-based SAN for storage of the Virtual Disk Images (VDIs) through iSCSI. I know I could just setup a big Storage Repository (SR) ...
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111 views

Windows IIS hosting on VM using CentOS 6

Like this fellow here, I also have a 1&1 server, which requires me to use only NAT forwarding. I have installed using the CentOS6 / Xen server (I forgot which command line command it is) and ...
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141 views

How to pass boot paremeters to a XenServer HVM? Is it even supported?

I'm willing to build up a fully automated installation of CentOS 7 over XenServer 6.5 using kickstart. According to XenServer 6.5 Documentation, CentOS 7 is now supported in HVM mode: In XenServer ...
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334 views

Add nmi=ignore to default xen boot option

I updated my Xenserver from 6.2 to 6.5 and the server won't boot unless I deactivate Hyper Threading via BIOS (INtel Server Board). I can fix that using a special kernel parameter (nmi=ignore) but I ...
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IP setting in CentoOS 6.2x64 by XenCenter 6.2

I have setup a Guest CentOS virtual machine in Xenserver.. I have updated the Xentools but i cannot find the option to config my IP Address which is showing to be 'unknown' currently. All i need to do ...
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1answer
5k views

Citrix Xen Live Migration without a pool

I have Citrix XenServer 6.2 Is it possible to use the xe vm-migrate command without having a pool? My command: xe vm-migrate vm=movetest host=newhost --live --force Error: Host newhost not ...
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XenServer 6.2 Read Only and Slow Disk I/O

I virtualized a datacenter a few months back and we have a pool of 3 HP DL360 G5 servers, each with 32GB of Memory and dual Intel Xeons. Recently we have been experiencing 2 issues, the first of which ...
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466 views

XenServer 6.2 DHCP Setup

I have a XenServer 6.2 running on a dedicated OVH Server. For this dedicated server I have 2 additional IP blocks. Whenever I setup a new VM (mostly CentOS 6.6) i have to skip the network ...
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4answers
910 views

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

I'm trying to understand if it is possible to have a Type-1 Hypervisor (bare metal, no host OS) with the ability to view the guest(s) operating system(s) on the same machine. i.e. I have a XenServer ...
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2answers
1k views

XenServer 6.5 bare metal randomly rebooting and hanging

I am pretty new to XenServer so it may just be something silly causing this. Some background first. I have 2 instances of XenServer running on my network. I have an older horsepower server ...
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1answer
309 views

What hypervisors support vGPU? [closed]

Does anyone know if any open source hypervisor supports vGPUs? It looks like XenServer and vSphere are the only two hypervisors that support virtual graphics cards (true vGPU, not passthrough or ...
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57 views

xenserver can't save snapshots to shared storage due to metadata errors

We have an HA pool that does daily snapshots of selected VMs and saves them to shared storage. Lately these snapshots have been failing with the following error message: Snapshots: VMPR failed: ...
3
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1answer
2k views

GPU support on OpenStack/CloudStack

I'm wondering if anyone here has had success with any of the cloud orchestration layers using a GPU (preferably vGPU)? I've been able to get XenServer 6.2 to successfully see our nvidia GRID K1 card ...
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198 views

xenserver host lost all storage connections

I have inherited a xenserver setup running 6.0. There is a storage pool set up with two host servers (a bad idea to start with I gather), 8 vms and several SRs. I recently had one of the hosts fail ...
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1k views

Moving large Xen Virtual Machine

I have a cluster of 4 Xenserver 6.2 servers, as well as one independent XenServer for a customer which have are attached to a very questionable (meaning that the drive hot-swapping causes it to break) ...
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2answers
9k views

Determine which guest is running on XEN: HVM or PV guest

I'm working with a Xen host which is installed XenServer from Citrix by someone. He already installed a lot of CentOS 5.2 guests on the host. I wonder how to check those guests to know they are PV ...
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2answers
379 views

Optimising bare-metal hypervisor installation

what is the best way to install a bare metal hypervisor (i.e. to host multiple VM's)? I spoke to a friend and he is using a HP server to host all his VMs with VMware ESXi, but he installed the VMWARE ...
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426 views

XenServer - Storage XenMotion between 2 servers using direct LAN connection

I have two physical servers (recent, Haswell based machines) on which I have installed XenServer 6.5 . Both servers have two NICs. These servers are hosted at the Hetzner datacenter. I have connected ...
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1answer
933 views

How can I install a new xenserver dom0 kernel?

Since Citrix released the full source code to xenserver 6.2 I've been evaluating it. It's works very well, but there is only one problem that I haven't solved. Unfortunately, Citrix do not supply the ...