search for: kvms

In the Redhat EL6 virtualization guide ( http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/sect-Virtualization-Network_Configuration-Bridged_networking_with_libvirt.html ) I read this: # Configure iptables Configure iptables to allow all traffic to be forwarded across the bridge. # iptables -I FORWARD -m physdev --physdev-is-bridged -j ACCEPT # service iptables

What KVMs do you use? I personally like the ConnectPro.

Rather off-topic, but I'm looking for IP-based KVMs (~16 ports) that can handle both PS/2 and USB hookups on the server side. All of the answers over at Slashdot are a few years out of date and it looks like prices on KVM head units have dropped a bit over the years. Some of the older units only worked with Windows, Internet Explorer and Activ...

...business requests are for different type of services: databases, web apps, application servers etc. I wonder which solution is better: 1. new CentOS under vmware (having several CentOS servers under Vmware) or 2. new CentOS under KVM under existing CentOS (having a few CentOS servers with several KVMs in each) Each approach has some advantages and disadvantages. Can you share your thoughts about it ? Regards Przemyslaw Bak (przemol) ----------------------------------------- Wez udzial w konkursie i WYGRAJ! Sprawdz >> http://linkint.p...

...uldn't be). When I type in my freeipa domain password, it gets rejected. libvirtd with Kerberos and GSSAPI is working perfectly. I can use virt-manager from my Fedora 26 desktop with the below URI: qemu+tcp://ranbir at kvmhost01/system virt-manager connects, I get a list of all the running KVMs and I can work with them like I would if I was running virt-manager over ssh with X forwarding. The only that doesn't work is viewing the consoles. Details: - my host is a fully updated CentOS 7 system - libvirtd is set to listen for tcp connections - I added the service spice/kvmhost01.thein...

...-network bridge=br0,model=virtio --graphics=none --autostart --prompt/ When I look in /var/log/libvirt/qemu/Test.log I see the VM is started with the command (edited down to the relevant parts): //usr/bin/qemu-kvm -S -m 1024 -smp 2 -name Test,process=qemu:Test -nographics -boot c -drive file=/kvms/test1.img,if=none,boot=on /This has two problems: 1) The "-S" is keeping the system from booting 2) the "if=none" needs to be "if=virtio" I've confirmed both by changing -nographics to -curses and watching what happens. For #1, its a big fat nothing (no surpr...

...mes a USB mouse, and sometimes a USB keyboard/mouse adapter that is plugged into a kvm (actually two of them). With one of these USB k/m adapters, when I plug in, the system fails to recognize the mouse (but no problem with the keyboard). The 2 adapters are the same brand/model (Aten), but the KVMs are different Aten masterviews. Of course I would like to figure out why this is happening and get it to stop, but meanwhile is there a way to restart the mouse services.

Hello Community, I have a problem with two deleted KVMs. So far we have done everything that is necessary: virsh undefine [kvm-name] --managed-save --snapshots-metadata --remove-all-storage --nvram virsh destroy [kvm-name] and we delete the xml-File and the .img. If we now call "virsh list -all", then the machines are also gone. However,...

Hi Everyone, How do I change the console resolution of CentOS 6 KVMs to be 1024x768 or more? I have the spice server and qxl card selected for the KVM. I assumed it would be enough to put the text console into high res, but I was wrong. :/ Regards, Ranbir

Hello Everybody, I have a physical machine with 4 Ethernet cards that I have mapped to 4 bridges. I would like to have each of my KVMs use 2 bridges for NIC bonding. 1. Can I have more than one bridge assign to one KVM? 2. Can I use virt-install to assign a KVM with more than one bridge during the KVM installation? a. It was a long shot but I have tried bridge=br0,br1 ; bridge=br0 bridge=br1 - never worked....

Hmm.. after all these years I actually have a monitor on my desk beside me going through a couple of KVMs to our racks. So, I hope to make more use of direct console connections instead of shelling in. But, now.... the text has always been huge and the interface clunky. And after a bit of googling around, and file searching on the system, I can't seem to find where or if there is a way to chang...

Hello Everyone, I have a CentOS 6.3 host running a few KVMs. One of them is a CentOS 6.3 KVM that I want to use for making backups with BackupPC. What I'm having a problem with is assigning the KVM an external drive. I used to run BackupPC on an Ubuntu box. The backups went to an external eSATA 1.5TB, ext4 format, single partition drive (regular 3.5&...

...orking before. I haven't done much in the preview except try out Spartan and do some configuration. I like the UI design. The only thing that really is driving me nuts is the mouse. My mouse is not running smoothly in the KVM. On my desktop (Fedora 20 running Gnome) my mouse is fine. In other KVMs (e.g. Fedora 22) the mouse works just as smoothly. But, in this preview build, there appears to be a lag...or something. It's difficult to describe. Umm...it's almost like frames are dropping. I don't know. Overall it just sucks and its killing my desire to play around with it more. My...

...'ve even gone so far as to add ug+s on all dirs, to no avail. General access seems to be OK. But there's a failure in one specific instance. On the KVM, I'm running unibasic (business basic). I wrote a program to test record locking when reading indexed ISAM files. Running it on two KVMs, I verified that record locking does work; the lock passed between the two programs very nicely. But I encountered a problem when creating indexed ISAM files. When a UB program builds an indexed ISAM DB, it creates both a data file and an index file on the file server. The problem is that it *...

Hi, One of my servers in a IDC in another country mysteriously went down this morning, and when I contacted the IDC, I was told that XEN doesn''t boot up, as follows: [QUOTE] This is error message on the screen " Error 19: Linux Kernel must be loaded before initrd" Server is currently up with 2nd kernel. Please check the grub.conf. [/QUOTE] Looking at grub.conf, I see the

Hi folks, it's been adventurous. Yesterday night I've started debugging this particular issue of why my KVMs don't boot on Ubuntu 11.10. A first hint was apparmor, which seemed to deny access to the LVM partitions I had assigned as disks. After correctly configuring apparmor, or even disabling it the issue was still the same. After a wild goose chase, I decided to update everything, I now have * libvi...

...VMA to be invalidated (easy using mirroring) >> >> - the target KVM to invalidate its guest page table, as a result of >> invalidation of the target VMA > > You can do the target KVM invalidation inside the mirroring invalidation > code. Why should the source and target KVMs behave differently? If the source invalidates its guest page table via MMU notifiers, so should the target. The KVM MMU notifier exists so that nothing (including mirroring) needs to know that there is KVM on the other side. Any interaction between KVM page tables and VMAs must be mediated by MM...

...VMA to be invalidated (easy using mirroring) >> >> - the target KVM to invalidate its guest page table, as a result of >> invalidation of the target VMA > > You can do the target KVM invalidation inside the mirroring invalidation > code. Why should the source and target KVMs behave differently? If the source invalidates its guest page table via MMU notifiers, so should the target. The KVM MMU notifier exists so that nothing (including mirroring) needs to know that there is KVM on the other side. Any interaction between KVM page tables and VMAs must be mediated by MM...

...kvm_vcpu_is_preempted; Would be nicer to assign conditionally in the KVM_FEATURE_STEAL_TIME block. The steal_time structure has to be zeroed, so this code would work, but the native function (return false) is better if we know that the kvm_vcpu_is_preempted() would always return false anway. Old KVMs won't have the feature, so we could also assign only when KVM reports it, but that requires extra definitions and the performance gain is fairly small, so I'm ok with this. > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > @@ -2057,6 +2057,8 @@ static void record_steal_time(st...

...kvm_vcpu_is_preempted; Would be nicer to assign conditionally in the KVM_FEATURE_STEAL_TIME block. The steal_time structure has to be zeroed, so this code would work, but the native function (return false) is better if we know that the kvm_vcpu_is_preempted() would always return false anway. Old KVMs won't have the feature, so we could also assign only when KVM reports it, but that requires extra definitions and the performance gain is fairly small, so I'm ok with this. > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > @@ -2057,6 +2057,8 @@ static void record_steal_time(st...