[blob-indexer]
namespace = <%= @ns %>
user = <%= scope['openiosds::user'] %>
volume = <%= @volume %>
report_interval = <%= @report_interval %>
chunks_per_second = <%= @chunks_per_second %>
interval = <%= @interval %>
log_level = <%= scope['openiosds::log_level'] %>
log_facility = LOG_LOCAL0
log_address = /dev/log
syslog_prefix = OIO,<%= @ns %>,<%= @type %>,<%= @num %>

[blob-indexer]
namespace = <%= @ns %>
user = <%= scope['openiosds::user'] %>
volume = <%= @_volume %>
report_interval = <%= @report_interval %>
chunks_per_second = <%= @chunks_per_second %>
interval = <%= @interval %>
log_level = <%= scope['openiosds::log_level'] %>
log_facility = LOG_LOCAL0
log_address = /dev/log
syslog_prefix = OIO,<%= @ns %>,<%= @type %>,<%= @num %>

Replace @volume by the default @_volume
Replace @volume by the default @_volume
