Article ID: 125083, created on Apr 2, 2015, last review on Jun 17, 2016

  • Applies to:
  • Virtuozzo 6.0

Symptoms

After updating to Virtuozzo 6 update 9, container startup fails with the following error:

3802 : Error invoking external utility: vzctl start 101 failed: Mount image: /vz/private/101/root.hdd 
Container is mounted 
Starting the Container ... 
get_features_fault_tech (mask.c:311): fopen(/proc/vz/cpuid_override) error : No such file or directory 
Error syncing node and pool features. 

Updating and creating cache fails on temporary container start as well:

Loaded plugins: rpm2vzrpm
Cleaning repos: base0 base1 base2 base3
0 metadata files removed
0 sqlite files removed
0 metadata files removed
Loaded plugins: rpm2vzrpm
Metadata Cache Created
Loaded plugins: rpm2vzrpm
get_features_fault_tech (mask.c:311): fopen(/proc/vz/cpuid_override) error : No such file or directory
Error: "/usr/sbin/vzctl --skiplock --quiet start 50 --skip_ve_setup" return 170

A virtual machine is not starting with the following error:

~# prlctl start parallelstest
Starting the VM...
Failed to start the VM: Failed to perform the operation. An error occurred when managing the cluster resource. Contact your system administrator for assistance.

In /var/log/parallels.log it can be seen that the reason of the failure is the same:

/HostUtils:38141:64574/ Program '/usr/sbin/cpufeatures --quiet sync' returned exit code: '1' !
/HostUtils:38141:64574/ Program '/usr/sbin/cpufeatures --quiet sync' returned with error: 'get_features_fault_tech (mask.c:311): fopen(/proc/vz/cpuid_override) error : No such file or directory' !
/disp:38141:64574/ Vm state was changed from VMS_STARTING to VMS_STOPPING for vm {a18fe236-ea55-4af2-b3f1-8b86be0d132e} (name='parallelstest'), to powerState 0(vpsNormal)
/disp:38141:64574/ Unable to start VM

Cause

The issue is recognized as a product bug with internal ID #PSBM-32497.

Resolution

The bug was fixed in Virtuozzo 6 Update 9 Hotfix 3. Install the latest updates on the server in order to resolve the issue:

~# yum update

If installing the update is not an option for some reason, the following workaround can be applied.

Workaround

Hide the file /usr/sbin/cpufeatures:

~# mv /usr/sbin/cpufeatures{,.backup}

Search Words

get_features_fault_tech

get_features_fault_tech (mask.c:311): fopen(/proc/vz/cpuid_override) error : No such file or directory

Error: "/usr/sbin/vzctl --skiplock --quiet start 50 --skip_ve_setup" return 170

Error syncing node and pool features.

/proc/vz/cpuid_override

fopen(/proc/vz/cpuid_override)

fopen(/proc/vz/cpuid_override) error : No such file or directory

Failed to start the VM: Failed to perform the operation. An error occurred when managing the cluster resource. Contact your system administrator for assistance.

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