RPC 10: OST_PUNCH
~~~~~~~~~~~~~~~~~
[[ost-punch-rpc]]

An RPC that modifies the size attribute of a resource on an OST.

.OST_PUNCH Request Packet Structure
image::ost-punch-request.png["OST_PUNCH Request Packet Structure",height=50]

//////////////////////////////////////////////////////////////////////
The ost-punch-request.png diagram resembles this text art:

       OST_PUNCH:
      --request-------------------------------
      | ptlrpc_body | ost_body | lustre_capa |
      ----------------------------------------
//////////////////////////////////////////////////////////////////////

'ptlrpc_body'::
RPC descriptor. See <<struct-ptlrpc-body>>.

'ost_body'::
Metadata about the resource. See <struct-ost-body>>.

include::struct_lustre_capa.txt[]

.OST_PUNCH Reply Packet Structure
image::ost-punch-reply.png["OST_PUNCH Reply Packet Structure",height=50]

//////////////////////////////////////////////////////////////////////
The ost-punch-reply.png diagram resembles this text art:

       OST_PUNCH:
      --reply-------------------
      | ptlrpc_body | ost_body |
      --------------------------
//////////////////////////////////////////////////////////////////////

'ptlrpc_body'::
RPC descriptor. See <<struct-ptlrpc-body>>.

'ost_body'::
Metadata about the resource, as it appears on the OST.