Search results

With vanilla KVM, yes. But Proxmox patches to KVM (fairsched patch to be exact) currently break guests running virtio_net (and guests become slow after some time). So from experience, I'd recommend running e1000, until at least it's possible not to use fairsched/cpuunits for KVM guests.

Check your system with memtest, check the temperature of CPU and HDD (mbmon, hddtemp).

What does the BSOD say? Could you provide a screenshot?

I've been trying to figure out what causes this problem for a long time now. I'm not 100% sure yet (it usually takes few hours up to several days until the problem happens), but the cause seems to be "fairsched.diff" patch which is applied to vanilla KVM sources. I compiled KVM without this...

Does anyone know if ethtool is available in the default Proxmox 1.3 installation?

So you need a Java SSH client (or similar), not a VNC server capable of connecting to Linux virtual consoles (are there such VNC servers? sounds complicated). Yes, I agree, it could be useful in some cases. You can find such clients in Google. If you find anything interesting, open source, and...

Give some examples then ;) It's a hardware solution. KVM-IP viewer is connected to the keyboard, video and mouse ports of a given server. It grabs all signals and allows you to connect via VNC. You can't implement it in software. I'm just pointing out your misconceptions about such a...

No. VNC access to virtual machines lets you see/interact: - during system bootup, choose device to boot (HDD, CD-ROM), bootloader (like GRUB), kernel messages or system booting etc. - it lets you configure guests when you don't have network access to them VNC access to the host doesn't let you...

What's wrong with SSH access?

No, just trying to record how "slowness" looks like when virtio_net breaks (search kvm-devel list for more info). http://marc.info/?l=kvm&m=124352277725484 In the end, I made a video with "recordmydesktop".

Or, how were Proxmox video tutorials made?

VNC viewer has a "record" button, which allows to write a session to a file (I suppose). I.e. it creates files like vncsession.fbs.001. How can I play such recorded sessions (i.e. in a video player)? Alternatively, how can I save the contents of a window to a video or flash file?

OK, I'll make it configurable. I think it should default to 15 seconds? Users running few kvm guests (4-6) will most likely not notice the delay as the server boots; users with more guests (15-20 or more) will be happy that all guests start in a usable state. I'll make some more tests and...

Yes, it should work. How about this change: --- QemuServer.pm.usbdevice 2009-05-27 11:23:21.000000000 +0200 +++ QemuServer.pm 2009-05-27 12:44:32.000000000 +0200 @@ -1746,6 +1746,7 @@ if ($conf->{onboot}) { print STDERR "Starting Qemu VM $vmid\n"...

1) they are kvm guests 2) I didn't try to change guest's kernel parameters as virtualization should be precise and fault-free

Avi's comment and the whole thread on kvm-devel is about something else. When using virtio_net driver, after some time, on some guests, guest network is slow (i.e. when normally ping time is below 1 ms, the delay is around or exactly 1000 ms). Additionally, virtio_console is slow (i.e. if you...

OK, sent.

You have at least three options: - edit config files in /etc/qemu-server/<VMID>.conf manually, point the disk to a new location, for example: scsi0: /mnt/new_disk/some_virtual_disk... virtio0: /mnt/new_disk/other_virtual_disk... Currently, there is no way to editthis values from the web...

Still, I can imagine one may want to use USB even if not using "-usbdevice tablet". So here is my patch for "tablet:" option. With it, in config file, you can specify: tablet: 0 which will make the guest start without "-usbdevice tablet" option. Specifying "tablet: 1" or not specifying it...

That's not the problem here. The problem are some timing issues when lots of guests are being started concurrently, as pointed out by Avi Kivity.