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A real answer, though. Yes, there's a potential for latency or a performance hit from running your storage in a VT-d passthrough. But think about the practical aspects. Your system isn't going to be IOPS-bound in the first place. There are several levels of abstraction in this storage, and the fact that you're using VMs at all indicates that you're okay ...


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I don't recommend this type of passthrough setup anymore. It's a lose-lose on most counts, especially with reliability and performance. It can certainly be done, but the safest solution (especially with a hypervisor like ESXi) is to just use a supported RAID controller and local storage. If you want ZFS storage, build a standalone ZFS storage system.


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Issue ntpd is deleting interfaces Nov 9 01:10:09 localhost ntpd[27847]: Deleting interface #16 ethX, x.x.x.x#123, interface stats: received=0, sent=0, dropped=0, active_time=522 secs Nov 9 01:10:09 localhost ntpd[27847]: Deleting interface #17 ethX, x.x.x.x#123, interface stats: received=0, sent=0, dropped=0, active_time=522 secs Resolution Use the -L ...


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Yes, this is possible. For your host OS, you can set its vlan ID from its virtual switch settings under VLAN ID. Your virtual switch needs to have the "Allow management OS to share this adapter" setting enabled. Hyper-V Manager -> Virtual Switch Manager -> Your virtual switch -> VLAN ID For your VMs, you can set a vlan ID for each network ...


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While I highly urge anyone to use Aidan's answer if at all possible. The final solution I found allowed me to preserve the original design of the server and still make it all work. Going off the aritcle provided here https://community.mellanox.com/docs/DOC-1845 it became apparent that I was able to add interfaces to my team. I added a team interface for ...


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There are different answers to this question. Before WS2016/W10, the correct answer was: Yes, you can enable the Hyper-V role in a Hyper-V VM, but the hypervisor would not start. Therefore, you could create VMs in the vHost, but those VMs could not start. However, in Windows 10 and WS2016 (TP4 and later) we can use nested Hyper-V. If you're mad enough to ...


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1 switch per VLAN is needless overcomplication. Configure trunk port(s) on your TOR/access switch. Then create 1 vSwitch on your host. Connect the vSwitch NIC(s) to the trunk ports. When you create a VM, edit the vNIC settings and set the VLAN tag/ID/number. This is both the simplest way to do it, and best practice. The vSwitch, as long as you use MSFT ...


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If you want the exact same output, you need a separate disk controller with a separate disk attached, connected via pci-passthrough to the guest. A virtio disk image is NOT the same disk as the physical drive it resides on. It's just an image, with it's own metadata. The virtio framework probably doesn't even supply the metadata hdparm queries for, because ...


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I feel you are mixing couple of things here. As a one-liner, adding the tap interface/vxlan-interface to a linux bridge is no different from adding a physical interface (just that the other end of the interface is different) More detailed answer, based on my inference of your question: The vxlan interface that you have created provides the vxlan tunnel ...


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I found this explanation from Mugurel Sumanariu very clear: VIRT stands for the virtual size of a process, which is the sum of memory it is actually using, memory it has mapped into itself (for instance the video card’s RAM for the X server), files on disk that have been mapped into it (most notably shared libraries), and memory shared with other ...


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There are excellent V2V Converters like ones StarWind and 5nine do but in your case you only need to a) export and b) import VM. See link below. Overview of exporting and importing a virtual machine (TechNet)


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I fix the problem by; Use another IP from different address group then the one you use for internet connection. Example: I used 192.168.1.10 for internet connection. When I connect pc to local I changed it to 192.168.2.10 Delete all Gateway and DNS IPs. Then it works fine.


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In addition to Ondra Sniper Flidr and the comment by Michael Hampton, I wanted to provide the official statement by Citrix. Quoting this pdf (didn't found this in HTML), chapter "XenMotion", page sixteen: But in this example setup, the external real switch device is expecting the MAC address of the VM to be on one port, while it‟s actually just ...


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It will work well, live migration is standard in production environment. But your infrastructure is not so reliable as you think it is, there are many SPOFs in that. What will happen when your switch will die? Or even on port on that switch? What will happen when your NAS will die? If you need high availabiliy, every component of your infrastructure must be ...


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As with all judgement calls, there will be some opinion in any answer. Nevertheless, it is definitely true to say that containerisation is not virtualisation. They are different technologies, working in different ways, with different pros and cons. To regard containerisation as virtualisation lite is to make a fundamental mistake, just as regarding a ...


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Export the VM. Import it on the new machine. You'll probably have to specify a few things like the network switch when you import.


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Docker is used all over the place for web apps which are long running apps. Currently in production I have the following running in docker php-fpm apps celery queue workers (python) nodejs apps java tomcat7 Go


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Problem, according to the comments: DNS name resolution wasn't working correctly. Solution: Replaced /etc/resolv.conf with the one from the machine hosting the container.


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Had a very frequently occuring problem when using OpenVZ Where the DNS servers would randomly disappear. Have you ensured that all the DNS servers are set correctly and functioning?


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I found a fix to this problem here: https://docs.oracle.com/cd/E27300_01/E27307/html/vmrns-bugs.html#vmrns-solaris10hangs 7.3.21. Solaris 10 Release 8/11 Guest Hangs at Boot When booting a virtual machine with Oracle Solaris 10 Release 8/11, the guest OS hangs when the copyright information screen appears. This is caused by a change in CPUID handling in ...


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Solaris 10 (or any version of Solaris for that matter) isn't a supported guest in XenServer 6.5. Earlier versions appear to have supported it but not 6.x. There is an interesting discussion on the Citrix Discussins board but the solutions appear to be erm experimental. What can I do? Use a hypervisor that supports Solaris as a guest.


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Not a real answer but too long for a comment... 1 IP-address, multiple certificates --> that sounds like you want support for server name indication and I can't find any conclusive evidence that sendmail supports that (or not for that matter). If indeed you can only configure a single certificate and you can't invest in a UCC/SAN certificate: A ...



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