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

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NAS recommendation for Xenserver

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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30 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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130 views

Can't attach iSCSI with multipathing in Citrix XenServer

Dear people of the world. I have a problem reattaching an iSCSI target on XenServer after a reboot. Whenever I try, I get several errors. Here's me in the attach screen on the redundant storage ...
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631 views

XenServer 6.5 iSCSI MPIO with point-to-point links (without a Switch)

I'm doing some experiment with iSCSI MPIO between FreeNAS 9.3 and two XenServer 6.5 hosts. I would like to use iSCSI MPIO to serve as VM storage. Pretty common environment, but without a switch to ...
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717 views

Xenserver 6.2 cannot send alert using gmail smtp

I'm using Xenserver 6.2 and configured ssmtp.conf an mail_alert.conf in order to receive alerts through email. I followed the instructions on ...
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246 views

Diskless XenServer 6.2

I'm a bit suspicious since I cannot find relevant recent information on this. I am wanting to boot a diskless XenServer version 6.2 (the server... not the installer). I have an Intel Pro 1000 ET ...
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820 views

ext4 root filesystem corruption under XenServer 6.2 DomU

We're with a problem with filesystem corruption in guest machines in a XenServer 6.2 It only happens in Linux Machines. Randomly the filesystem remounts as read-only and them corruption starts on the ...
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135 views

xenserver vm routing fails half the time on the same network

I recently switched from openstack (due to complexity) to xenserver at work, I ran into an issue that I can't solve, I can ping the server all the time but the vms part of the time. here is a ...
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443 views

Restore LVM if VG is not consistent (XenServer 5.6.1)

i have a VG that uses the PVs /dev/md1 and /dev/md2. Now one hdd failed in /dev/md1: [root@xenserver1 ~]# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sda3[0] 382320128 blocks ...
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578 views

How to increase CPU core speed of a guest to maximum of Citrix Xenserver Host

There is a Citrix XenServer 5.5 (HP ML370 G5, Xeon 2GHz) on this Server there is a Windows Guest (Windows 2008 R2 x64) under Properties I set 4 CPU Cores with max prio. But if I check with CPU-Z the ...
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519 views

Almost All Xenserver Logical Volumes Disappeared - Recovery?

We had a hard disc crash of one of two hard discs in a software raid with a LVM on top. The server is running Citrix xenserver. On the hard disk which is still intact, the volume group gets detected ...
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952 views

Citrix XenApp Fundamentals

I have a problem with a new install of a XenApp Citrix server. Everything was working fine, but I was setting up Citrix Access Gateway and single sign in. Now, on the main server I am getting an ...
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4k views

XenServer 5.5 local storage problem

I have the following problem with a Citrix XenServer 5.5. I had to physically move the host, so I shut down all machines via console: xe vm-shutdown force=true vm=my-machine-uuis-s After that I ...
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9 views

I can installa “Ossec” on xenserver host?

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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29 views

X3250 Server: stuck at firmware screen

The server is initialize, then it is stuck at the IBM System X Server Firmware screen (before F1, F12 appears, etc). You can see in the attached image. ...
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88 views

How to power down Cloudstack configured with XenServer Hypervisors

I have three XenServers(6.2) configured in a single pool. I also have a Cloudstack (CentOS 6.5) Management interface controlling them all. Everything is up and running but I can not figure out how to ...
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147 views

Apache cloudstack: Cannot add instances using template created from snapshot

I followed this https://github.com/imduffy15/GSoC-2014/ and installed apache cloudstack with basic networking in my local machine, and every thing worked smoothly. ‚ÄčI can add instances from the built ...
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607 views

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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60 views

XenServer pool, unable to access certain networks from 2 servers in pool

I have Xenserver pool of of 3 xenservers, at version 6.1. After we got a serious DDOS attack on our network, all servers got rebooted (whole pool of 3 servers got restart and entered into maintenance ...
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669 views

XenServer IP Failover OVH not working

I have got problem on XenServer with IP FailOver in OVH. I did everything what is in this official tutorial http://help.ovh.co.uk/BridgeClient and IP not working. On my VM is Debian 7 64bit I set MAC ...
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183 views

Virtual Allocation Unreasonably High

Just upgraded our pool to Xenserver 6.2 and installed a brand new host, also with Xenserver 6.2. Was excited about the new features since Xenserver was fully open-sources (over-allocate ram, ha live ...
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240 views

Attach Multiple disk LVM from old Xenserver to new Xenserver

hope you can help me with this one... We have a Xenserver 6 with 4 320 Gig disks as a one LVM Volume Group. Suddenly past friday one disk failed and we were unable to start the server. I have tried to ...
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1k views

Xenserver Error config does not exist in xenopsd

My xenserver was freezing at the splash screen on bootup, so I used the "fallback" parameter during boot. Now it brings me to xenconsole with the error at the bottom: "The server failed to handle ...
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85 views

How can I export a XenServer virtual machine with all its snapshots?

Is there a way to export a virtual machine running on XenServer with all its past snapshots? I have tried to export a VM through XenCenter (right click on the machine and "Export..."). After importing ...
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255 views

FreeBSD XEN kernel not booting in XenServer 6.2

I have a XenServer 6.2 host, and I am trying to get a FreeBSD-9.1-i386 guest to run in PV mode. The installation of the guest is fine, but after a reboot with the new kernel the system does not boot. ...
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339 views

How to add missing kernel modules into xenserver using DDK?

Not sure if this is the best place to ask this question, stackoverflow doesn't seem quite right... anyway, maybe someone has done this before here. I would like to add some missing kernel modules ...
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180 views

What RAID policies should be used for a XenServer host?

I have a server with a PERC6/i card and a RAID-10 array running XenServer 6.1 with 6x VMs, one of which is SBS 2008 and the rest are a mix of file server, video-on-demand and SQL database server. The ...
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689 views

How to import XenServer's ovf/ova/xva format to KVM?

Now I'm considering migrate from Xen to KVM. I exported some exist virtual machines from Xen in the formats ovf and xva. How could I import them into KVM? As there're only a few of virtual machines, ...
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241 views

Cannot upgrade xenserver,pool master changes automatically to other server

I need to upgrade my XenServer pool of servers from 5.6 to 6.1. The problem i am facing is that when i shutdown pol master to boot it from CD, then it other member in the pool become the pool master ...
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1k views

Import Xen Server VHD

I am trialing using a distributed file system as the backend storage for my Xen Servers. I have set up the DFS (distributed file system) (using CentOS and GlusterFS) and everything is working ...
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4k views

Windows Server 2008 R2 DC can't ping to other computers except other DC

I have been trying to troubleshoot this problem since 20 hours ago, and still can't find a solution. I brought down (orderly shutdown) a Domain Controller yesterday. No problem at all connecting to ...
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598 views

Access All VLANS over XenServer Interface

For my current setup, I have a physical NIC on a XenServer machine that receives traffic tagged with various VLAN IDs. I have a virtual machine that is running Vyatta that needs to be able to access ...
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658 views

Change xenbr0 bridge name in XenServer

I want to setup a bridge in XenServer with a name other than xenbr0 , for example cloud0. I edited those files and their contenent so they can handle a bridged connection: ...
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264 views

I cannot see any VMs after I restart the xenhost

We have two xen host server in xen server pool. Host1 is the master and host2 is the slave. We restarted the xenhost1 due to server load. After the restart we could not view any VMs or the slave node ...
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1k views

XenServer 6.0 upgrade pygrub error

Just upgraded our XenServer testmachine from 5.6 to 6.0, one of the vms' (ubuntu-server 10.04 LTS) will no longer boot. Error in XenCenter; 9/11/2011 3:48:23 PM Error: Starting VM 'TestDom-Ubuntu' - ...
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35 views

Can reaching shared storage capacity prevent a VM from starting up in XenServer?

I have a VM installed on XenServer; it's drive is on an NFS share, which has just reached capaciy--could this prevent the VM from starting up?
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2k views

how to force stop/delete a VirtualMachine under XenServer (possible bug)

I was testing XenServer 5.6 100-47101p, I installed four VM's, two FreeBSD and two Windows. After installing the four VM's, I recompiled the VM containing FreeBSD 8.2 i386 kernel to enable/support ...
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11 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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24 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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43 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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5 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

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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64 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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64 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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28 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: ...
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60 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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124 views

XenServer CentOS VM: EXT4-fs error (device dm-2): ext4_journal_start_sb: Detected aborted journal

I have 2 different CentOS 6.4 VM's on 2 different Citrix XenServer and both have the same error within couple of few days. Output of messages: kernel: Aborting journal on device dm-2-8. kernel: ...
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64 views

Can not ping from Ubuntu VM but can to

I've got an XenServer with an pfsense Router Running on it. There are the following Networks: Lan: 10.0.0.0/24 DMZ: 10.0.1.0/24 Secure: 10.0.2.0/24 WAN: xxx I got 2 Windows VMs inside LAN: ...
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345 views

citrix xenserver 6.5 can't get vm's public network

Can't get my vm's guest out connection..! Premised: I alreay use xenserver on a test server dellt310 with two ethernet card that works perfectly, but now... -> I have an hetzner dedicated server ...
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66 views

XenCenter shows two disks per VM

I have two servers with Citrix XenServer 6.2 installed, including all patches up to XS62ESP1019. The servers are not part of a pool, the VMs do not have snapshots. When migrating a VM from one server ...