We had a minor issue with one of our kvm virtual machine the other day. By the way, we were using debian lenny with kvm installed. The KVM VM hung up and in an attempt to get it back live we had to restart the machine. But unfortunately, the virtual machine didn’t boot up. When we restarted the VM, this is the /var/log/messages output of the KVM host.
warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status ‘1’, qemu probably failed.
device vnet4 entered promiscuous mode
br0: port 3(vnet2) entering learning state
br0: port 3(vnet2) entering forwarding state
The kernel log (/var/log/kern.log) showed the following error.
br0: port 3(vnet2) entering disabled state
device vnet2 entered promiscuous mode
So, obviously we googled to find a solution and none of the solutions on the internet solved our problem. So, we decided to fix things ourself.
After a small investigation we found that one of our hard disk partition had no space. And the hard disk for the virtual machine that failed to boot comes from the same partition. So, that’s the problem that triggered all this issue.
We cleaned up the partition and rebooted the system and it worked fine this time. So, if you have a similar kind of issue, then you should probably check your hard disk space and clean it up if its almost/completely filled up.
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