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

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Xenserver networking in VirtualBox not working for DomU

I am trying to understand if/how unikernels work, using HaLVM and MirageOS and in order to experiment with those tools I have setup a XenServer virtual machine inside a VirtualBox on my Mac. ...
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1answer
229 views

Best Free Hypervisor with HA [closed]

We have been running the free version of Citrix XenServer for about 2 years now and it has worked OK for the most part, but we have also had our issues with it. (problems with bootloaders on various ...
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8answers
2k views

Free hypervisor for small configuration

I'm building a server for virtualization for a non profit organization. I was planning on employing VMware ESXI free but I'm second guessing my plan because newer ESXI don't seem to be well supported ...
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1answer
148 views

Xenserver 6.5 High Availability

I'm running xenserver 6.5 and I just configured high availability. I noticed that there is the option for start order. Is there a best practice for start order when it comes to HA? Obviously the more ...
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0answers
38 views

xenserver low disk io performance

I have XenServer 6.2 (updates applied XS62E001, XS62E002, XS62E004, XS62E005, XS62E007, XS62E008, XS62E009, XS62E010, XS62E011, XS62E012, XS62E013, XS62E014, XS62ESP1, XS62ESP1002) running a year in ...
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0answers
76 views

Xackup Backup Type for Xen Server 6.5

I'm running the Xackup trial and started backing up a few linux and windows VM's. I selected disk and memory state as the type of backup. Everything ran fine and backed up ok. When I went to edit ...
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0answers
5 views

VLAN Tags for Xenserver on VIFs

So possibly a simple question here but I haven't been able to find an answer to this. Is there any way in XenServer to associate a VLAN to a VIF instead of a network? Reason is I'm attempting to ...
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0answers
45 views

NAUbackup features + Snapshots

Does anybody know whether or not NAUbackup captures the memory of a vm, along with the disk, when it takes a snapshot? I'm running xenserver 6.5 on three blade servers and I setup NAUbackup to backup ...
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1answer
305 views

XenServer VHD data recovery

I have the exported disk image of a VM from XenCenter in VHD format. I used compress from the settings, if that has any impact. How I can access the files without creating VM? I have the VM settings ...
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1answer
303 views

Change Xenserver 6.5 MTU

How do I go about change the MTU setting for my management interface in xenserver 6.5? Right now its set to the default 1500 but I want to increase it to 9000. For my setup I have 2 nics on each host ...
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0answers
45 views

Error with Virtual CD-drive in XenServer 6.5

I have a problem with a new XenServer 6.5. When I create a new VM and I try to install some "OS" from the DVD/CD drive, I receive tapdisk experienced an error. In the log the error is different to ...
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10 views

Citrix Xenserver Service Account Issues

I'm trying to create an account with citrix xenserver so I can post questions on their boards and also get notifications for updates. I filled out the necessary info and I get an email saying an ...
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0answers
164 views

XenServer XVA import fails - The file could not be imported

I am trying to import some VMs in XVA format - which were exported from XenServer using XenCenter GUI. When importing them, the import fails with a very useless message of "The file could not be ...
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0answers
54 views

Issues with NAUbackup Email Notification

I've setup NAUbackup to carry out backups for my xenserver 6.5 VM's. It backups up fine but I can't get the email notification to work. I've uncommented everything in the VmBackup.py script, added my ...
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2answers
1k views

How to Run Updates Xenserver 6.5 Free Edition

I recently installed the free version of xenserver 6.5. Right now I can run updates through xencenter which is simple and easy. I've been reading though and I've come across a few articles mentioning ...
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1answer
119 views

Best iptables configuration for a xenserver with management interface exposed to www [closed]

Which is the best iptables configuration to protect a management interface of a xenserver with management interface exposed to www? This is my actual configuration: > :INPUT ACCEPT [0:0] :FORWARD ...
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1answer
58 views

Install ossec ids on citrix xenserver dom0

I'm running citrix xen server on a server with two nic each with dedicated public ip and the management interface is directly connected to the www and protected with iptables that allow connections ...
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0answers
70 views

How to block network connections between XenServer VMs using Open vSwitch?

I would like to block all network access between user VMs on a XenServer host so that users on each VM are unable to access any other user VM, or to sniff network traffic, no matter what. However I ...
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1answer
40 views

Trying to add 2nd iSCSI VDS to XenServer, receiving error about LUN already used by other SR

I've stepped out of my comfort zone here. Some background. I just provisioned a 2nd vdisk+volume on a HP MSA2000. This SAN is has another vdisk+volume linked to Xenserver. I set the mapping to the ...
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0answers
361 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 Mac....
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1answer
2k views

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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1answer
667 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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0answers
430 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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19 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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1answer
316 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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1answer
558 views

Dell Supplemental Pack Xenserver 6.5

I'm running xenserver 6.5 SP1 on my Poweredge M620. I want to take advantage of the remote host power on/off features but it looks like I need to install a Dell Supplemental Package. I've been ...
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1answer
1k 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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0answers
416 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
967 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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0answers
407 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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0answers
53 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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2answers
2k views

Upgrading XenServer 6.2 to 6.5 or updating in general

Trying to get my XenServer to update, and want to upgrade it also to version 6.5. But cant figur out how. When i try to update using the XenCenter, i cant select the server itselfe when i get to that ...
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1answer
158 views

XenServer has two processor, but only one is visible

I have a pool of two identical HP DL 360 G7 (dual processor Intel Xeon X5650), with two processors installed (the BIOS show both), running XenServer 6.5. Intel says that this processor has six cores (...
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0answers
72 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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1answer
72 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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1answer
264 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
299 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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2answers
557 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
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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0answers
213 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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0answers
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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1answer
34 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
541 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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0answers
34 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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0answers
293 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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1answer
602 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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4answers
1k 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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1answer
374 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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0answers
234 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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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 (...