Error during hole punch test. The log block manager requires a filesystem with hole punching support such as ext4 or xfs. On el6, kernel version 2.6.32-358 or newer is required. To run without hole punching (at the cost of some efficiency and scalability), reconfigure Kudu to use the file block manager. Refer to the Kudu documentation for more details. WARNING: the file block manager is not suitable for production use and should be used only for small-scale evaluation and development on systems where hole-punching is not available. It's impossible to switch between block managers after data is written to the server. Raw error message follows