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I finally got it working, the /etc/network/interfaces file has to look someting like this: auto bond0 iface bond0 inet manual slaves eth4 eth5 bond_miimon 100 bond_mode 802.3ad auto vmbr1 iface vmbr1 inet manual bridge_ports bond0.112 bridge_stp off...

Hmm, sounds good. I don't have a free nic but I have a bonding device for the storage network where I might be able to add vlans. Unfortunately it seems not possible to add vlans to bonding devices. I tried this: auto bond0.111 iface bond0.111 inet static address 10.65.1.12...

Hi, I have a cluster of 3 proxmox servers which hosts virtual Linux machines. 3 Linux vms need to be interconnected via an additional virtual nic in a private 10.x.x.x network. As long as I host the 3 vms on the same proxmox node this is no problem, I define a "blind bridge" without any...

We also sometimes observe this problem. Yes, Stop and Start helps, another Method is to just wait for about 40 Minutes. I always thought the Windows is doing something "magic" like a filesystem check in these Situations.

Yes, I have verified it with a windows vm and iometer. Raw instead of qcow was a big performance boost and nocache significantly boosted the result again. Unfortunately I did not document the results and I don't remember the exact numbers.

See: http://www.linux-kvm.org/page/Tuning_KVM If you're using raw volumes or partitions, it is best to avoid the cache completely, which reduces data copies and bus traffic:

Hi, my experience is: 1) use raw disks for winmdows speed, not qcow2 2) use cache=none by manual editing the /etc/qemuserver/vmid.conf file like this: virtio0: vms02:125/vm-125-disk-1.raw,cache=none Afterwards performance is ok even with IDE 3) if you want to double that performance again, then...

Hmm... And how to find out the ip/hostname of the cluster member where vmid xxx is running ?

Wow, this helps a lot, Thanks !!!

Hi, I begin to really like proxmox ve. For our Systems Administration I need to write some scripts e.g. for my own backup routines, for nagios monitoring etc. For example I need to find out: Which vms (ids) are running on my cluster What vm-name has the vm with id xxx On which node vm xxx is...

Hmm, wouldnt it be possible to compile a kvm-0.12.deb package that can be optionally installed on proxmox 1.5 ?

But your physical link in proxmox is ok and up at gigabit ? use "ethtool ethX" to find out. I also had problems sometimes with wrong autonegotiation on the physical side

Sorry, yes, I was talking about disk-io while you where talking about network io. I just read "virtio" and "performance" and this was all I had in mind in the last days ;) Regarding network IO maybe this helps ? http://www.mail-archive.com/kvm@vger.kernel.org/msg21283.html

I boosted the performance of a win2008 virtio server using the following: a) changed hd from qcow2 to raw b) changed caching to none in /etc/qemu-server/vmid.conf: 125.conf:virtio0: vms02:125/vm-125-disk-1.raw,cache=none Maybe this also helps in windows 7 ?

I come from a setup where each of the vm disks had an own lvm volume. It was a hassle to manage all these volumes which all took the maximum amount of space and I don't want to go back there, with or without web-interface, I was so glad I found proxmox as an easy to manage alternative but the...

Aah, i understand,yes, all my vms are in 1 logical volume. so the whole device is snapshotted just to backup 1 vm. Of course this is a big overhead. I thought there was a method of snapshotting just 1 qcow2 file. So if i bwlimit my backup and it takes 10 hours for 10 hours all writes to the vm...

I have 10 vms, some started, some not, they do very little io, 8 vms are mostly sleeping with cpu and io 0, this is a test-environment Alltogether all vms have 210 GB qcow-disks. I think vzdump only snapshots the 1 qcow file it just backs up ? Or does it behave different ?

Hi, I still do not understand, how big should i make the snapshot size ? In my old lvm installation with lvm snapshots a snapshot size of 40 GB was always far more than enough for backing up a 100 GB vm. Here with vzdump there were 350 GB needed ? Where do the 350 GB come from ? 350 GB is...

Hi, i am testing proxmox 1.5 and the backup schedules. I backup a qcow2 kvm domain with 100 GB from a share with 900 GTB free to a san volume that has 500 GB space free. The Backup finishes with a disk full error on a temporary generated snapshot volume Feb 03 22:06:01 INFO: Starting Backup...

Hi, I want to setup a proxmox cluster. My Servers all have a Nic for Internet and a Bonded Nic for the storage Backbone which is a lot faster. So I want proxmox to do all migrations and copies via the private storage network 10.x.x.x. What ist best practice, should I configure the 10.x...