NAME

       traffic_cache_tool - Traffic Server cache management tool

SYNOPSIS

       traffic_cache_tool [OPTIONS] COMMAND [SUBCOMMAND ...] [OPTIONS]

DESCRIPTION

       traffic_cache_tool  is  designed  to  interact  with  the  Traffic  Server  cache both for
       inspection and modification. It  uses  a  nested  command  keyword  style  for  specifying
       operations.  There  are  some  global  options that apply to all commands. These should be
       specified before any command. These can be abbreviated to  any  unique  initial  substring
       (e.g. "--sp" for "--span").

       --help Prints a brief usage message along with the current command hierarchy.

       --spans
              Specify  the span (storage) configuration. This can be a device, a cache directory,
              or a configuration file in the  formof  storage.config.  In  the  latter  case  all
              devices listed in the configuration file become active.

       --volumes
              Specify  the  volume  configuration  file  in  the format of volume.config. This is
              important primarily for allocation operations where having the volume configuration
              is needed in order to properly allocate storage in spans to specific volumes.

       --write
              Enable  writing  to  storage  devices. If this flag is not present then all storage
              will be opened read only and no operation will write to any  storage  device.  This
              makes "dry run" the default and actual changes require specifying this flag.

       --aos  Specific the average object size in bytes. This is used in various computations. It
              is identical to proxy.config.cache.min_average_object_size.

       --input
              Specify the input file or disk.

COMMANDS

       list   Search the spans for stripe data and display it. This is potentially slow as  large
              sections of the disk may need to be read to find the stripe headers.

              stripes
                     Print internal stripe metadata.

       clear  Clear all the spans by writing updated span headers.

              span   Clears  an  specific  span  and  it's  stripes.  The  span  to be cleared is
                     specified via --device

       dir_check
              Perform diagnostics on the stripe directories.

              full   Full check of the directories.

              freelist
                     Validate the directory free lists.

              bucket_chain
                     Validate the bucket chains in the directories.

       volumes
              Compute storage allocation to stripes based on the volume configuration  and  print
              it.

       alloc  Allocate storage to stripes, updating the span and stripe headers.

              free   Allocate  only  free  (unused)  storage to volumes, updating span and stripe
                     headers as needed.

       init   Initializes an uninitialized span and creates stripes on that span according to the
              volume  and  storage  configuration  The  span  to be initialized can be passed via
              --input

       find   Determines the stripe in disk cache where the content corresponding to the provided
              URL  may  be cached.  This command takes an input file which lists all the urls for
              which the stripe assignment needs to be determined.

EXAMPLES

       List the basic span data.:

          traffic_cache_tool --spans=/usr/local/etc/trafficserver/storage.config list

       Allocate unused storage space.:

          traffic_cache_tool \
             --spans=/usr/local/etc/trafficserver/storage.config \
             --volumes=/usr/local/etc/trafficserver/volume.config \
             alloc free

       Clear all spans.:

          traffic_cache_tool \
           --spans=/usr/local/etc/trafficserver/storage.config \
           --volumes=/usr/local/etc/trafficserver/volume.config \
           clear

       Clear a single span.:

          traffic_cache_tool \
          --span /opt/etc/trafficserver/storage.config \
          --volume /opt/etc/trafficserver/volume.config \
          clear span --device "/dev/sdb3" --write

       Initialize a new span.:

          traffic_cache_tool \
          --span /opt/etc/trafficserver/storage.config \
          --volume /opt/etc/trafficserver/volume.config \
          init --input "/dev/sdb3" --write

       Find Stripe Assignment.:

          traffic_cache_tool \
          --span /opt/etc/trafficserver/storage.config \
          --volume /opt/etc/trafficserver/volume.config \
          init --input "/home/user/urls.txt"

SEE ALSO

       storage.config(5) volume.config(5),

COPYRIGHT

       2020, dev@trafficserver.apache.org