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

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2
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3answers
511 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, ...
2
votes
0answers
503 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 ...
0
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0answers
42 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 ...
0
votes
1answer
424 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 ...
0
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0answers
54 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, ...
1
vote
2answers
426 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 ...
1
vote
1answer
45 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 ...
0
votes
1answer
174 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 ...
3
votes
0answers
168 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 ...
0
votes
1answer
22 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 ...
0
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0answers
126 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 ...
0
votes
1answer
30 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. ...
2
votes
1answer
244 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 ...
0
votes
3answers
876 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 ...
1
vote
0answers
22 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 ...
0
votes
1answer
395 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 ...
3
votes
0answers
182 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 ...
4
votes
1answer
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 ...
3
votes
5answers
3k views

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) ...
0
votes
0answers
91 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 ...
0
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0answers
126 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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0answers
265 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 ...
0
votes
1answer
1k views

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 ...
1
vote
1answer
4k 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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vote
0answers
821 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 ...
0
votes
1answer
359 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 ...
2
votes
4answers
648 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 ...
0
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2answers
885 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 ...
0
votes
1answer
234 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 ...
0
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0answers
42 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
votes
1answer
1k 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 ...
0
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0answers
160 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 ...
1
vote
2answers
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) ...
4
votes
2answers
8k 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 ...
3
votes
2answers
375 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 ...
0
votes
0answers
224 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: ...
0
votes
1answer
364 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 ...
2
votes
1answer
902 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 ...
2
votes
2answers
1k views

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

I had this problem today after a power failure. I had 2 vms and one of them won't boot and was using 100% of CPU and 100% of memory. Since it was very dificult to solve (at least for me) I want to ...
0
votes
0answers
118 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: ...
1
vote
1answer
1k views

Xenserver 6.5 LSI MegaRAID

Is there a package available to install the MegaCLI on XenServer6.5? For 6.5 there is this [1] but 6.5 has another kernel. XenServer 6.5 is based on CentOS6.5 (right?), so I also tried the ...
0
votes
0answers
632 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 ...
0
votes
2answers
1k views

Server 2012 R2 System Disk Filling

This is a bit of a strange issue - the usual troubleshooting steps don't seem to apply. On a XenServer 6.2 host (with SP1), I have a guest VM that is running Windows Server 2012 R2 that functions as ...
0
votes
2answers
647 views

XenServer VM SSH

I am trying to create a Ubuntu VM in XenServer and log into it with SSH. I was already able to do this using the same image, but now I just cannot figure out how I got the IP of the newly created ...
2
votes
2answers
1k views

RAID 10 Stripe Size for XenServer

Below is our current server configuration. In a few weeks I will be simulating a disaster recovery by installing 5 new disks (1 hot spare) and restoring all VMs from the backups. Will I gain anything ...
0
votes
0answers
94 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 ...
3
votes
4answers
3k views

XenServer and ZFS via NFS

I'm trying to connect a NFS share to XenCenter. The NFS server is a ZFSGuru distro (uses FreeBSD). The zfs volume was exported like this: /sbin/zfs set sharenfs="on" temppool/share According to ...
0
votes
1answer
129 views

Attaching a hard drive with ESXi VMs to XenServer

I am testing XenServer 6.5 on a single host, and as a test I have exported and imported a few VMs in OVF format from my existing ESXi server. All good so far, but I was wondering: I have a hard drive ...
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vote
0answers
38 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. ...