Questions tagged [xenserver]
XenServer is the virtualization platform Citrix has built around the Xen Hypervisor.
629
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Hyper-V vs. ESXi vs. XenServer
Can anyone share their experiences (for example, this was great! This failed miserably!) with using the Hyper-V, ESXi, and XenServer virtualization platforms? Cost? Management? features? Handling load ...
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8
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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 ...
- 339
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2
answers
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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 ...
- 305
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3
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Is Administering XenServer like administering CentOS?
Given XenServer (7 currently) is based on CentOS, does that mean it works just like CentOS in terms of updating, CLI, administration (non-Xen specific like mdadm and boot loaders) etc?
Basically, if ...
- 439
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votes
3
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Time to live exceeded, result after pinging the gateway from host in one subnet
I got a server with XenServer 6.0.2 and this server has 3 nic with 3 different ip addresses,
because I am using 3 different subnet
The first 2 card are working and from the first 2 subnet I have ...
- 311
7
votes
1
answer
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How to use more than 3 virtual disks in Linux using CentOS and XenServer
I've attached 5 virtual disks to a Virtual Machine in Citrix XenServer. The VM has the xs-tools installed. Initially it said that it couldn't add so many disks. After I installed the xs-tools, it ...
- 375
6
votes
7
answers
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Centralized virtualization (ESXi, XenServer) in a completely Windows-free environment
I'm looking into deploying a small (one or two host servers) non-production virtualization initiative for our company. We need it to be high performance and host shared resources for a number of users....
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votes
3
answers
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So what really makes a server grade NIC?
We have a couple servers hosting Citrix VM's. We are planning on adding SAN storage to our network so that we can do the quick migration and high availability thing. The question comes up with ...
- 336
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votes
5
answers
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/dev/centos/root does not exist after migrating CentOS7 from vmware to Xen
I am migrating a CentOS 7 system from VMware Server 2 to XenServer 6.5. The CentOS system was installed using the minimal installation. I used ovftool to convert the .vmdk file to a .img using the ...
- 163
6
votes
5
answers
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LUNs and virtual machines
I have HP P2000 + XenServer solution working. What I'm thinking about is how to create LUNs for 20 virtual machines. Separate LUN for every VM ? It gives me ability to backup the specific virtual ...
- 1,483
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1
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SAN Performance Slow
I have an iSCSI HP P2000 loaded with 12 x 300gb DP SAS drives. This is connected to 2 DL385 servers with 64gb RAM running XenServer. The SAN network is multipathed via 2 gigabit switches (4 x copper ...
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2
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Where does Xenserver store local VMs
My xenserver crashed a few months ago, I haven't been able to retrieve the VMs that were on it.
There was nothing special about the installation, I think it was all standard.
Is there a way to ...
- 105
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2
answers
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RHEL Clones (Centos, Scientific, CERN) network installation on XenServer 6.2
I'm trying to install a Scientific Linux CERN 6 guest on XenServer 6.2 through the network with PXE Booting but it hangs in the message:
mounting /tmp as tmpfs... done
I'm not using the most ...
- 5,700
6
votes
2
answers
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What are the space requirements for vm snapshots in Citrix XenServer 6.2?
As I understand it, the only way to do a live backup of a vm in XenServer is to make a snapshot, convert the snapshot to a template, then export the template (to another server), then delete the ...
- 265
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votes
1
answer
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Can I safely uninstall "Citrix Tools for Virtual Machines"?
Having several virtual servers with Windows 2008 R2 at our web hoster (Germany's "1&1", they seem to use Citrix Xen), I have every now and then some servers that hang (RDP login screen hangs ...
- 2,460
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3
answers
8k
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Converting Linux machine from XenServer to Hyper-V
I'm in the process of converting the last few on my XenServer VMs over to Hyper-V.
The majority of them have been Windows machines and I've done a backup and restore using Windows Backup. For some of ...
- 3,833
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votes
3
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XenServer Performance
we've got 2 x HP DL360 G5s with Quad Quad Xeons 2.6GHz and 32GB of memory each running XenServer 5.5 and they access an OpenFiler box (with 8 x 320GB SAS 10K drives) via copper CAT5 (1GB) for the ...
- 153
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votes
4
answers
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XenServer migrate machines between hosts
I have a XenServer 5.6 Free setup with 5 VMs (Windows and Linux) using about 1.5TB of directly attached storage.
Because our virtualisation needs have grown a bit, we currently are preparing a faster ...
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2
answers
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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 ...
- 51
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votes
2
answers
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Remote automated provisioning to a XenServer Hypervisor
I'm currently working on a project where I use Vagrant with Ansible provisioning to create local environments in VirtualBox. I'm currently working with a University and we have a XenServer Hypervisor (...
- 1,130
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votes
3
answers
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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 ...
- 51
5
votes
1
answer
1k
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File is different when read from NFS server
So I have a backup server we've been using for some time, it's a FreeBSD server running zfs and serving it over NFS. The export is simple: /backup/vm -maproot=root -alldirs. If relevant, that was ...
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How do I setup virtual networking Xenserver?
I'd have a network like this currently. Basically, It's two Xenservers connected to our colocation provider's switch via one ethernet cable per server. Each server currently has a second ethernet card ...
- 321
4
votes
11
answers
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XenServer and VMware ESXi, scalability and budget considerations?
In my organization, we are looking to virtualize servers (a dozen of Linux and Windows servers or so).
I am looking for a solution what would scale over the years and that would allow us maximum ...
- 150
4
votes
4
answers
6k
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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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votes
3
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Some questions about xenserver HA
To start thank you for your future help :)
I would like to know if it is possible to wrap my H.A as on my paint (excused me the quality of the drawing).
I would also like to know how it goes with ...
- 51
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votes
2
answers
5k
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To SSD or not to SSD? (Virtualization - Xenserver) [closed]
I have several Xenserver boxes running (very well). Most of ours are setup with a RAID1 with two mechanical 7200rpm enterprise sata drives, or RAID10 with 4 7200 enterprise sata drives. The sata ...
- 580
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votes
4
answers
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Citrix XenServer: how to add RAM to a guest VM without XenCenter?
Is it possible to add RAM to a guest VM in without using XenCenter, but from the host machine console or a remote machine?
- 2,503
4
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1
answer
354
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How can I convert a iSCSI system disk from XenServer to another format
Perhaps this is quite a silly question. I installed a new VM on XenServer. It loads the full system from a iSCSI from a NAS. Now I am planning to migrate to Proxmox as XenServer falls short regarding ...
- 487
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votes
4
answers
3k
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Which is the best inexpensive way to manage five virtualization hosts?
for the 5 (physical) servers in our datacenter, I'm looking for a unified virtualization design. All 5 servers do not come with hardware virtualization support (older XEONs). Since we're an NGO on low ...
- 1,134
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votes
1
answer
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How does a VM hosted on xen knows that it is in a virtualized environment [closed]
I have read that in para virtualization hosted virtual machines are aware that they are being virtualized, and this allows them to increase their performance. But, how does the hosted machine know ...
- 143
4
votes
2
answers
472
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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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4
votes
1
answer
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XenServer Linux guest booting off iSCSI SAN (ZFS storage): Will a non-checksumming guest file system still be at risk?
We are storing files on FreeNAS 9.2 using ZFS. I love the data integrity claims made by ZFS, having randomly lost data in the past on servers using ext3, XFS, and ReiserFS that were not mistreated (...
- 648
4
votes
3
answers
41k
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How to connect to xencenter console remotely?
I need to administrate xenserver remotely. I have redirected 443 port in my router and now I can administrate XenServer. But I need to create VMs, how can I use XenCenter console to see VM desktop ...
- 141
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votes
2
answers
4k
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Can I install Xenserver with larger local storage?
I installed XenServer 6.0 on a machine with 2 drives (80GB SSD and 1TB SATA). My goal is to have some space for local storage where I can put ISO (since it will be very difficult to access the box ...
- 553
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2
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Desktop virtualization
Is there currently a proper Type 1 "desktop" hypervisor? Either free or not?
This is just for tinkering around at home on some beefy Phenom machines.
Basically i want to be able to run say 2 OSs on ...
- 143
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votes
1
answer
8k
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Where are the VM .cfg files on XenServer 6?
Background: I am attempting to use PCI passthrough to utilise a PCI-E card in a VM. I have a freshly installed server (which supports VT-d, and has it enabled) with XenServer 6.0.2 on it, and have ...
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1
answer
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RAIDZ vs RAID1+0
Hi guys I just got 4 SSDs for my FreeNAS box. This server is only used to serve a single iSCSI extent to my Citrix XenServer pool and was wondering if I should setup them up in a RAIDZ or a RAID 1+0 ...
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votes
2
answers
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How to change LVM physical volume name
I am trying to convert HVM mode of VM into PV mode on XenServer 5.5 server.
As a part of this routine I need to change in /etc/fstab partition names /dev/hd* to /dev/xvd*.
Here is my current /etc/...
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3
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How to check CPU/HDD temperature under XenServer 5.6?
Is it possible to check the temperature of the CPU and locally attached SATA/IDE HDDs under XenServer 5.6? Can I install lm-sensors?
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What are the implications of running an older version of xenserver tools on VMs?
As part of my day-job I manage a couple of xenserver pools. I've been working through the old ones, bringing them up to xenserver 6.5 from a range of older versions 5.5, 6.0, 6.1, and 6.2
Many of ...
- 2,310
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2
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CentOS 7.0 as DomU in XenServer 6.2 SP1; cannot run with PV drivers?
It appears that CentOS 7 cannot work with paravirtualized drivers with XenServer 6.2
I’ve installed one PVHVM guest with the xs-tools package but the drivers fails to connect at bootime.
I got this ...
- 5,700
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answer
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XenServer 6.1 Reports Wrong Storage Amount in XenCenter
We're using XenServer 6.1 Advanced on three blades in a pool. I'm in the process of moving storage from an old SAN to a new SAN using Storage XenMotion. So far, so good!
I discovered though, on a LUN ...
- 676
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1
answer
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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 ...
- 2,379
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1
answer
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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 http://support.citrix.com/servlet/KbServlet/download/34969-...
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1
answer
996
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High load on Xen guests
We're facing a weird issue with a freshly installed Xen (4.2) system.
The server is an Intel SR1690WB equipped with 4x1Tb HDD and with a RS2BL040 RAID card which configured to use RAID10.
The ...
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1
answer
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Is there a better way to do bonded vlan tagged interfaces with XEN
We have a number of XEN servers all running CentOS or RHEL. The VM's that they run are all required to be on their own VLAN for no other reason than the customer expects them to be. Long story short ...
- 141
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votes
0
answers
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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 ...
- 5,700
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2
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How to configure Single-Server Private Network in Xenserver without using VLAN?
I would like to create a Single Server private Network on a Xenserver which will be used for communication between the host and the VMs. I am able to achive this by creating a vlan and configuring ...
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votes
3
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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: 192.168.10....
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