Cannot create OpenVZ VPS in SolusVM - it stays offline: Failed to convert the precreated cache

Symptoms 

• When trying to create a VPS it stays offline in SolusVM. 

• Attempt to create VPS manually shows the error even though the corresponding template cache is present under /vz/template/cache directory on OpenVZ slave node:

  CONFIG_TEXT: Error: Failed to convert the precreated cache /vz/template/cache/debian-7.0-x86_64-minimal.tar.gz
  Error: Unable to find ostemplate: debian-7.0-x86_64-minimal

Cause

The template cache is inconsistent.

Resolution

1. Connect to OpenVZ node via SSH
2. Remove .lz4 template cache and re-create the cache:

   # rm -f /vz/template/cache/debian-7.0-x86_64-minimal.plain.ploopv2.tar.lz4
   # /usr/libexec/ovz-template-converter --verbose /vz/template/cache/debian-7.0-x86_64-minimal.tar.gz