From 17f287172413dc04244781aa5302a0e4f10e2777 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Thu, 23 May 2013 12:19:42 -0400 Subject: glusterfs: discard (hole punch) support Add support for the DISCARD file operation. Discard punches a hole in a file in the provided range. Block de-allocation is implemented via fallocate() (as requested via fuse and passed on to the brick fs) but a separate fop is created within gluster to emphasize the fact that discard changes file data (the discarded region is replaced with zeroes) and must invalidate caches where appropriate. BUG: 963678 Change-Id: I34633a0bfff2187afeab4292a15f3cc9adf261af Signed-off-by: Brian Foster Reviewed-on: http://review.gluster.org/5090 Tested-by: Gluster Build System Reviewed-by: Anand Avati --- rpc/xdr/src/glusterfs3-xdr.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'rpc/xdr/src/glusterfs3-xdr.h') diff --git a/rpc/xdr/src/glusterfs3-xdr.h b/rpc/xdr/src/glusterfs3-xdr.h index 2f9ba4b45..9e5d2e67b 100644 --- a/rpc/xdr/src/glusterfs3-xdr.h +++ b/rpc/xdr/src/glusterfs3-xdr.h @@ -912,6 +912,30 @@ struct gfs3_fallocate_rsp { }; typedef struct gfs3_fallocate_rsp gfs3_fallocate_rsp; +struct gfs3_discard_req { + char gfid[16]; + quad_t fd; + u_quad_t offset; + u_quad_t size; + struct { + u_int xdata_len; + char *xdata_val; + } xdata; +}; +typedef struct gfs3_discard_req gfs3_discard_req; + +struct gfs3_discard_rsp { + int op_ret; + int op_errno; + struct gf_iatt statpre; + struct gf_iatt statpost; + struct { + u_int xdata_len; + char *xdata_val; + } xdata; +}; +typedef struct gfs3_discard_rsp gfs3_discard_rsp; + struct gfs3_rchecksum_req { quad_t fd; u_quad_t offset; @@ -1209,6 +1233,8 @@ extern bool_t xdr_gfs3_fsetattr_req (XDR *, gfs3_fsetattr_req*); extern bool_t xdr_gfs3_fsetattr_rsp (XDR *, gfs3_fsetattr_rsp*); extern bool_t xdr_gfs3_fallocate_req (XDR *, gfs3_fallocate_req*); extern bool_t xdr_gfs3_fallocate_rsp (XDR *, gfs3_fallocate_rsp*); +extern bool_t xdr_gfs3_discard_req (XDR *, gfs3_discard_req*); +extern bool_t xdr_gfs3_discard_rsp (XDR *, gfs3_discard_rsp*); extern bool_t xdr_gfs3_rchecksum_req (XDR *, gfs3_rchecksum_req*); extern bool_t xdr_gfs3_rchecksum_rsp (XDR *, gfs3_rchecksum_rsp*); extern bool_t xdr_gf_setvolume_req (XDR *, gf_setvolume_req*); @@ -1305,6 +1331,8 @@ extern bool_t xdr_gfs3_fsetattr_req (); extern bool_t xdr_gfs3_fsetattr_rsp (); extern bool_t xdr_gfs3_fallocate_req (); extern bool_t xdr_gfs3_fallocate_rsp (); +extern bool_t xdr_gfs3_discard_req (); +extern bool_t xdr_gfs3_discard_rsp (); extern bool_t xdr_gfs3_rchecksum_req (); extern bool_t xdr_gfs3_rchecksum_rsp (); extern bool_t xdr_gf_setvolume_req (); -- cgit