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I think the following recommendation is probably what's tripping it but we've never followed this recommendation and never had any serious issues. We do however use write protective hardware, battery backed raid controllers and such, "To ensure durability of Active Directory writes, do not deploy a virtual domain controller’s database files (the Active ...


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I'm having a little difficulty understanding the exact scenario, but if your setup looks like this: Server1 --Server2 running in Hyper-V on Server1 on internet virtual network ----Workstation running in Hyper-V on Server 2 on external virtual network I believe you'll want to change Server2's virual NIC to connect to the external network (instead of ...


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NetBackup uses the VMware Storage API’s and shouldn’t cause issues but; VMsnapshots Snapshots are bad! this is a good explanation why Snapshots can cause issues and depending on the delta size of the file it may not get played into the backup routine. I have seen issues in the past where chains of snapshots have been missed. I would recommend that you ...


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follow this guide http://surminski.eu/2012/04/17/hyper-v-how-to-add-more-than-4-cores-to-a-virtual-machine/ you can locate the vm xml configuration file under the "Virtual Machines" directory of the VM's VHD directory, the configuration file will be named under the VM's id. Below link is a reference. reference: VM xml configuration file make sure you ...


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Qemu takes VMs into pause on io errors by design, so that you will avoid corrupt disks. All you have to do is restore the iscsi connections and run/unpause the VMs


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Modern OS and filesystem are much more resilient against corruption, and the same can be said for MySQL (especially when used with InnoDB tables). Basically, anything written to disk with sync/fsync semantic should be crash-safe, as the writes will not return until the data are on stable storage. Moreover, InnoDB uses internal journaling to be sure no ...


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Edit: Even after the switch got power again and the storage was available, the VM's were still in an unresponsive crashed state. They did not react to any input whatsoever forcing me to do a hard-reset one by one, relying on the filesystem journaling to repair the damage. I was lucky it worked and nothing borked. As far as I understand, I got lucky there as ...


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What are the new IP addresses that you have given to the two VM's? Make sure that they are in the same subnet, like Tero Kilkanen said. A good test is to ping the gateway from both VM1 and VM2, then try to ping the other VM.


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After long searches i found the solution : myorigin = localhost mydestination = localhost solution finaly found here on server-fault - this is the thread


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Both forms allow multiple operating systems to run on a single physical machine. With containers, these operating systems are isolated (they have their own file systems, processes, libraries including the libc, IP address, etc.) but they are nevertheless sharing the very same kernel. That's the reason why uname -a showed your host kernel version. With ...


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A good starting point would be to read the Wikipedia article: Operating-system-level virtualization is a server virtualization method in which the kernel of an operating system allows the existence of multiple isolated user-space instances, instead of just one. Such instances, which are sometimes called containers, software containers, virtualization ...


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None of the configuration you provide relates to the issue you're getting. Mail being rejected based on DMARC rules means that the SPF rules are not respected. You should revise your SPF for both domains to include the other one so that both servers can send for both domains. When doing SPF changes, it's always a good idea to loosen the DMARC rules so ...


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The swrast thing is the software renderer. That means it's not finding the hardware driver for your graphics card. There's a bunch of libGL libraries installed and a bunch of of symbolic links to those libraries. To see these run this from the cmd line. sudo find /usr -iname "*libGL.so*" -exec ls -l {} \; Now the probable cause of your problem is that ...


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Hot swapping components is a hardware feature, and has nothing to do with the software installed on the hardware. If your machines allow for cpu and ram hotswap then you should be able to do just that. But that's not really a heard of option of course.


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Think about the question here: Hyperconverged solutions are focused on combining virtualization compute and storage resources together. These are still built atop commodity servers (Supermicro, Dell, HP, etc.), so the reasonable expectation is that you can hot-swap disks, but you likely would not be able hot-swap RAM. The point of these solutions is ...


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I was running the hyper-v hyper visor in vmware, not a supported configuration, and the settings were not set correctly.


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Alright. I have to answer this question before anyone else. I followed this tutorial. http://blog.3mdeb.com/2015/12/30/emulate-rapberry-pi-2-in-qemu/ The key is that Changing ld.so.preload Then it boots. Then I think I can do a lot things using qemu new.sh. Here's the commands: /usr/local/src/qemu-2.6.0/bin/debug/native/arm-softmmu/qemu-system-arm \ ...


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Both of your virtual hosts assign themselves an IP address automatically from the 169.254 address space, when they cannot connect to a DHCP server. Try to configure an address manually to both these VMs, for example in the 192.168.100.0/24 subnet.


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If this particular case, the high IO usage was being caused by a cron job executing a set of chmod and chown commands on a regular basis. On a non-virtual host, these commands were executed much faster, but inside the virtual host, these commands were much much slower to execute and caused high disk wait times. By removing these set of commands, performance ...



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