Applicable to:
- SolusVM
Symptoms
- Unable to boot KVM VPS
- Upon pushing the Reboot (Debug) button at the page SolusVM > Virtual Servers > <the affected VPS> the following error can be seen:
SVM_ERROR: Domain kvm101 has been undefined
Domain kvm101 defined from /home/kvm/kvm101/kvm101.xml
Domain kvm101 marked as autostarted
error: Failed to create domain from /home/kvm/kvm101/kvm101.xml
error: internal error: qemu unexpectedly closed the monitor: ioctl(KVM_CREATE_VM) failed: 12 Cannot allocate memory
2021-03-23T08:56:18.128294Z qemu-kvm: failed to initialize KVM: Cannot allocate memory
Cause
There is a lot of cached memory on the KVM Slave
Resolution
- Log in to the KVM Slave node where the affected VPS is hosted via SSH
- Run the below command
# sync; echo 3 > /proc/sys/vm/drop_caches
- Start the VPS
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