removed 'fop->checksum' from codebase as its not required anymore

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 734 (keep only the working/usable code in build tree to focus more on development)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=734

31 files changed, 11 insertions, 1173 deletions

diff --git a/libglusterfs/src/call-stub.c b/libglusterfs/src/call-stub.c
index f0d04eb95d7..233a1616250 100644
--- a/libglusterfs/src/call-stub.c
+++ b/libglusterfs/src/call-stub.c
@@ -1829,59 +1829,6 @@ fop_readdirp_stub (call_frame_t *frame,
 }
 
 call_stub_t *
-fop_checksum_stub (call_frame_t *frame,
-		   fop_checksum_t fn,
-		   loc_t *loc,
-		   int32_t flags)
-{
-	call_stub_t *stub = NULL;
-
-	GF_VALIDATE_OR_GOTO ("call-stub", frame, out);
-	GF_VALIDATE_OR_GOTO ("call-stub", loc, out);
-
-	stub = stub_new (frame, 1, GF_FOP_CHECKSUM);
-	GF_VALIDATE_OR_GOTO ("call-stub", stub, out);
-
-	stub->args.checksum.fn = fn;
-	loc_copy (&stub->args.checksum.loc, loc);
-	stub->args.checksum.flags = flags;
-out:
-	return stub;
-}
-
-
-call_stub_t *
-fop_checksum_cbk_stub (call_frame_t *frame,
-		       fop_checksum_cbk_t fn,
-		       int32_t op_ret,
-		       int32_t op_errno,
-		       uint8_t *file_checksum,
-		       uint8_t *dir_checksum)
-{
-	call_stub_t *stub = NULL;
-
-	GF_VALIDATE_OR_GOTO ("call-stub", frame, out);
-
-	stub = stub_new (frame, 0, GF_FOP_CHECKSUM);
-	GF_VALIDATE_OR_GOTO ("call-stub", stub, out);
-
-	stub->args.checksum_cbk.fn = fn;
-	stub->args.checksum_cbk.op_ret = op_ret;
-	stub->args.checksum_cbk.op_errno = op_errno;
-	if (op_ret >= 0)
-	{
-		stub->args.checksum_cbk.file_checksum = 
-			memdup (file_checksum, NAME_MAX);
-
-		stub->args.checksum_cbk.dir_checksum = 
-			memdup (dir_checksum, NAME_MAX);
-	}
-out:
-	return stub;
-}
-
-
-call_stub_t *
 fop_rchecksum_stub (call_frame_t *frame,
                     fop_rchecksum_t fn,
                     fd_t *fd, off_t offset,
@@ -2475,15 +2422,6 @@ call_resume_wind (call_stub_t *stub)
 		break;
 	}
 
-	case GF_FOP_CHECKSUM:
-	{
-		stub->args.checksum.fn (stub->frame,
-					stub->frame->this,
-					&stub->args.checksum.loc,
-					stub->args.checksum.flags);
-		break;
-	}
-
 	case GF_FOP_RCHECKSUM:
 	{
 		stub->args.rchecksum.fn (stub->frame,
@@ -3205,31 +3143,6 @@ call_resume_unwind (call_stub_t *stub)
 		break;
 	}
 
-	case GF_FOP_CHECKSUM:
-	{
-		if (!stub->args.checksum_cbk.fn)
-			STACK_UNWIND (stub->frame,
-				      stub->args.checksum_cbk.op_ret,
-				      stub->args.checksum_cbk.op_errno,
-				      stub->args.checksum_cbk.file_checksum,
-				      stub->args.checksum_cbk.dir_checksum);
-		else
-			stub->args.checksum_cbk.fn (stub->frame, 
-						    stub->frame->cookie,
-						    stub->frame->this,
-						    stub->args.checksum_cbk.op_ret, 
-						    stub->args.checksum_cbk.op_errno,
-						    stub->args.checksum_cbk.file_checksum,
-						    stub->args.checksum_cbk.dir_checksum);
-		if (stub->args.checksum_cbk.op_ret >= 0)
-		{
-			GF_FREE (stub->args.checksum_cbk.file_checksum);
-			GF_FREE (stub->args.checksum_cbk.dir_checksum);
-		}
-
-		break;
-	}
-
 	case GF_FOP_RCHECKSUM:
 	{
 		if (!stub->args.rchecksum_cbk.fn)
@@ -3630,12 +3543,6 @@ call_stub_destroy_wind (call_stub_t *stub)
 		break;
 	}
 
-	case GF_FOP_CHECKSUM:
-	{
-		loc_wipe (&stub->args.checksum.loc);
-		break;
-	}
-
 	case GF_FOP_RCHECKSUM:
 	{
                 if (stub->args.rchecksum.fd)
@@ -3854,15 +3761,6 @@ call_stub_destroy_unwind (call_stub_t *stub)
 	}
 	break;
 
-	case GF_FOP_CHECKSUM:
-	{
-		if (stub->args.checksum_cbk.op_ret >= 0) {
-			GF_FREE (stub->args.checksum_cbk.file_checksum);
-			GF_FREE (stub->args.checksum_cbk.dir_checksum);
-		}
-	}
-  	break;
-
 	case GF_FOP_RCHECKSUM:
 	{
 		if (stub->args.rchecksum_cbk.op_ret >= 0) {
diff --git a/libglusterfs/src/call-stub.h b/libglusterfs/src/call-stub.h
index afc5b13e9a2..bc621ec83a5 100644
--- a/libglusterfs/src/call-stub.h
+++ b/libglusterfs/src/call-stub.h
@@ -503,19 +503,6 @@ typedef struct {
 			gf_dirent_t entries;
 		} readdirp_cbk;
 
-		/* checksum */
-		struct {
-			fop_checksum_t fn;
-			loc_t loc;
-			int32_t flags;
-		} checksum;
-		struct {
-			fop_checksum_cbk_t fn;
-			int32_t op_ret, op_errno;
-			uint8_t *file_checksum;
-			uint8_t *dir_checksum;
-		} checksum_cbk;
-
 		/* rchecksum */
 		struct {
 			fop_rchecksum_t fn;
@@ -1059,20 +1046,6 @@ fop_readdir_cbk_stub (call_frame_t *frame,
 		      gf_dirent_t *entries);
 
 call_stub_t *
-fop_checksum_stub (call_frame_t *frame,
-		   fop_checksum_t fn,
-		   loc_t *loc,
-		   int32_t flags);
-
-call_stub_t *
-fop_checksum_cbk_stub (call_frame_t *frame,
-		       fop_checksum_cbk_t fn,
-		       int32_t op_ret,
-		       int32_t op_errno,
-		       uint8_t *file_checksum,
-		       uint8_t *dir_checksum);
-
-call_stub_t *
 fop_rchecksum_stub (call_frame_t *frame,
                     fop_rchecksum_t fn,
                     fd_t *fd, off_t offset,
diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
index 77364918f8b..f5431d471df 100644
--- a/libglusterfs/src/defaults.c
+++ b/libglusterfs/src/defaults.c
@@ -1129,41 +1129,6 @@ default_getspec (call_frame_t *frame,
 	return 0;
 }
 
-
-static int32_t
-default_checksum_cbk (call_frame_t *frame,
-		      void *cookie,
-		      xlator_t *this,
-		      int32_t op_ret,
-		      int32_t op_errno,
-		      uint8_t *file_checksum,
-		      uint8_t *dir_checksum)
-{
-	STACK_UNWIND (frame,
-		      op_ret,
-		      op_errno,
-		      file_checksum,
-		      dir_checksum);
-	return 0;
-}
-
-
-int32_t
-default_checksum (call_frame_t *frame,
-		  xlator_t *this,
-		  loc_t *loc,
-		  int32_t flag)
-{
-	STACK_WIND (frame,
-		    default_checksum_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->checksum,
-		    loc,
-		    flag);
-	return 0;
-}
-
-
 static int32_t
 default_rchecksum_cbk (call_frame_t *frame,
                        void *cookie,
diff --git a/libglusterfs/src/globals.c b/libglusterfs/src/globals.c
index d480f089fcb..c0040db1448 100644
--- a/libglusterfs/src/globals.c
+++ b/libglusterfs/src/globals.c
@@ -72,7 +72,6 @@ gf_op_list_init()
 	gf_fop_list[GF_FOP_FINODELK]    = "FINODELK";
 	gf_fop_list[GF_FOP_ENTRYLK]     = "ENTRYLK";
 	gf_fop_list[GF_FOP_FENTRYLK]    = "FENTRYLK";
-	gf_fop_list[GF_FOP_CHECKSUM]    = "CHECKSUM";
 	gf_fop_list[GF_FOP_XATTROP]     = "XATTROP";
 	gf_fop_list[GF_FOP_FXATTROP]    = "FXATTROP";
 	gf_fop_list[GF_FOP_FSETXATTR]   = "FSETXATTR";
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h
index b6db51489c1..48bb0ff4df6 100644
--- a/libglusterfs/src/glusterfs.h
+++ b/libglusterfs/src/glusterfs.h
@@ -113,7 +113,6 @@ typedef enum {
         GF_FOP_FINODELK,
 	GF_FOP_ENTRYLK,
 	GF_FOP_FENTRYLK,
-        GF_FOP_CHECKSUM,
         GF_FOP_XATTROP,
         GF_FOP_FXATTROP,
         GF_FOP_FGETXATTR,
diff --git a/libglusterfs/src/latency.c b/libglusterfs/src/latency.c
index 71f9824209f..d8f405148a3 100644
--- a/libglusterfs/src/latency.c
+++ b/libglusterfs/src/latency.c
@@ -99,8 +99,6 @@ gf_set_fop_from_fn_pointer (call_frame_t *frame, struct xlator_fops *fops, void
                 fop = GF_FOP_ENTRYLK;
 	else if (fops->fentrylk == fn)
                 fop = GF_FOP_FENTRYLK;
-        else if (fops->checksum == fn)
-                fop = GF_FOP_CHECKSUM;
         else if (fops->xattrop == fn)
                 fop = GF_FOP_XATTROP;
         else if (fops->fxattrop == fn)
diff --git a/libglusterfs/src/xlator.c b/libglusterfs/src/xlator.c
index 94a53211a4c..c2f585d03a0 100644
--- a/libglusterfs/src/xlator.c
+++ b/libglusterfs/src/xlator.c
@@ -85,7 +85,6 @@ fill_defaults (xlator_t *xl)
 	SET_DEFAULT_FOP (entrylk);
 	SET_DEFAULT_FOP (fentrylk);
 	SET_DEFAULT_FOP (lookup);
-	SET_DEFAULT_FOP (checksum);
 	SET_DEFAULT_FOP (rchecksum);
 	SET_DEFAULT_FOP (xattrop);
 	SET_DEFAULT_FOP (fxattrop);
diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h
index 38ef4bf8524..e373cc42400 100644
--- a/libglusterfs/src/xlator.h
+++ b/libglusterfs/src/xlator.h
@@ -91,14 +91,6 @@ typedef int32_t (*fop_getspec_cbk_t) (call_frame_t *frame,
 				      int32_t op_errno,
 				      char *spec_data);
 
-typedef int32_t (*fop_checksum_cbk_t) (call_frame_t *frame,
-				       void *cookie,
-				       xlator_t *this,
-				       int32_t op_ret,
-				       int32_t op_errno,
-				       uint8_t *file_checksum,
-				       uint8_t *dir_checksum);
-
 typedef int32_t (*fop_rchecksum_cbk_t) (call_frame_t *frame,
                                         void *cookie,
                                         xlator_t *this,
@@ -112,10 +104,6 @@ typedef int32_t (*fop_getspec_t) (call_frame_t *frame,
 				  xlator_t *this,
 				  const char *key,
 				  int32_t flag);
-typedef int32_t (*fop_checksum_t) (call_frame_t *frame,
-				   xlator_t *this,
-				   loc_t *loc,
-				   int32_t flag);
 
 typedef int32_t (*fop_rchecksum_t) (call_frame_t *frame,
                                     xlator_t *this,
@@ -681,7 +669,6 @@ struct xlator_fops {
 	fop_finodelk_t       finodelk;
 	fop_entrylk_t        entrylk;
 	fop_fentrylk_t       fentrylk;
-	fop_checksum_t       checksum;
 	fop_rchecksum_t      rchecksum;
 	fop_xattrop_t        xattrop;
 	fop_fxattrop_t       fxattrop;
@@ -725,7 +712,6 @@ struct xlator_fops {
 	fop_finodelk_cbk_t       finodelk_cbk;
 	fop_entrylk_cbk_t        entrylk_cbk;
 	fop_fentrylk_cbk_t       fentrylk_cbk;
-	fop_checksum_cbk_t       checksum_cbk;
 	fop_rchecksum_cbk_t      rchecksum_cbk;
 	fop_xattrop_cbk_t        xattrop_cbk;
 	fop_fxattrop_cbk_t       fxattrop_cbk;
diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c
index 4ae128bbb55..5f73944206b 100644
--- a/xlators/cluster/afr/src/afr.c
+++ b/xlators/cluster/afr/src/afr.c
@@ -376,13 +376,6 @@ afr_local_cleanup (afr_local_t *local, xlator_t *this)
 			GF_FREE (local->cont.lk.locked_nodes);
 	}
 
-	{ /* checksum */
-		if (local->cont.checksum.file_checksum)
-			GF_FREE (local->cont.checksum.file_checksum);
-		if (local->cont.checksum.dir_checksum)
-			GF_FREE (local->cont.checksum.dir_checksum);
-	}
-
 	{ /* create */
 		if (local->cont.create.fd)
 			fd_unref (local->cont.create.fd);
@@ -2167,104 +2160,6 @@ out:
 	return 0;
 }
 
-
-int32_t
-afr_checksum_cbk (call_frame_t *frame, void *cookie,
-		  xlator_t *this, int32_t op_ret, int32_t op_errno,
-		  uint8_t *file_checksum, uint8_t *dir_checksum)
-		
-{
-	afr_local_t *local = NULL;
-	
-	int call_count = -1;
-
-	local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		if (op_ret == 0 && (local->op_ret != 0)) {
-			local->op_ret = 0;
-
-			local->cont.checksum.file_checksum = 
-                                        GF_MALLOC (NAME_MAX, gf_afr_mt_char);
-			memcpy (local->cont.checksum.file_checksum, file_checksum, 
-				NAME_MAX);
-
-			local->cont.checksum.dir_checksum = 
-                                       GF_MALLOC (NAME_MAX, gf_afr_mt_char);
-			memcpy (local->cont.checksum.dir_checksum, dir_checksum, 
-				NAME_MAX);
-
-		}
-
-		local->op_errno = op_errno;
-	}
-	UNLOCK (&frame->lock);
-
-	call_count = afr_frame_return (frame);
-
-	if (call_count == 0)
-		AFR_STACK_UNWIND (checksum, frame, local->op_ret, local->op_errno,
-				  local->cont.checksum.file_checksum, 
-				  local->cont.checksum.dir_checksum);
-
-	return 0;
-}
-
-
-int32_t
-afr_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc,
-	      int32_t flag)
-{
-	afr_private_t *priv = NULL;
-	afr_local_t *local  = NULL;
-
-	int ret = -1;
-
-	int i = 0;
-	int32_t call_count = 0;
-	int32_t op_ret   = -1;
-	int32_t op_errno = 0;
-
-	VALIDATE_OR_GOTO (frame, out);
-	VALIDATE_OR_GOTO (this, out);
-	VALIDATE_OR_GOTO (this->private, out);
-
-	priv = this->private;
-
-	ALLOC_OR_GOTO (local, afr_local_t, out);
-
-	ret = AFR_LOCAL_INIT (local, priv);
-	if (ret < 0) {
-		op_errno = -ret;
-		goto out;
-	}
-
-	call_count = local->call_count;
-	frame->local = local;
-
-	for (i = 0; i < priv->child_count; i++) {
-		if (local->child_up[i]) {
-			STACK_WIND (frame, afr_checksum_cbk,
-				    priv->children[i],
-				    priv->children[i]->fops->checksum,
-				    loc, flag);
-
-			if (!--call_count)
-				break;
-		}
-	}
-
-	op_ret = 0;
-out:
-	if (op_ret == -1) {
-		AFR_STACK_UNWIND (checksum, frame, op_ret, op_errno,
-                                  NULL, NULL);
-	}
-	return 0;
-}
-
-
 int32_t
 afr_statfs_cbk (call_frame_t *frame, void *cookie,
 		xlator_t *this, int32_t op_ret, int32_t op_errno,
@@ -3054,7 +2949,6 @@ struct xlator_fops fops = {
 	.finodelk    = afr_finodelk,
 	.entrylk     = afr_entrylk,
 	.fentrylk    = afr_fentrylk,
-	.checksum    = afr_checksum,
 
 	/* inode read */
 	.access      = afr_access,
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index 4580bcda278..125f5c2a2f4 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -273,11 +273,6 @@ typedef struct _afr_local {
 			unsigned char *locked_nodes;
 		} lk;
 
-		struct {
-			uint8_t *file_checksum;
-			uint8_t *dir_checksum;
-		} checksum;
-
 		/* inode read */
 
 		struct {
diff --git a/xlators/cluster/dht/src/dht.c b/xlators/cluster/dht/src/dht.c
index 0fc5d45a317..8a8a89c8823 100644
--- a/xlators/cluster/dht/src/dht.c
+++ b/xlators/cluster/dht/src/dht.c
@@ -406,11 +406,6 @@ struct xlator_fops fops = {
 	.fxattrop    = dht_fxattrop,
         .setattr     = dht_setattr, 
         .fsetattr    = dht_fsetattr,
-#if 0
-	.setdents    = dht_setdents,
-	.getdents    = dht_getdents,
-	.checksum    = dht_checksum,
-#endif
 };
 
 struct xlator_dumpops dumpops = {
diff --git a/xlators/cluster/dht/src/nufa.c b/xlators/cluster/dht/src/nufa.c
index 8d181fa507a..015f8e77b1e 100644
--- a/xlators/cluster/dht/src/nufa.c
+++ b/xlators/cluster/dht/src/nufa.c
@@ -721,11 +721,6 @@ struct xlator_fops fops = {
 	.xattrop     = dht_xattrop,
 	.fxattrop    = dht_fxattrop,
         .setattr     = dht_setattr,
-#if 0
-	.setdents    = dht_setdents,
-	.getdents    = dht_getdents,
-	.checksum    = dht_checksum,
-#endif
 };
 
 
diff --git a/xlators/cluster/dht/src/switch.c b/xlators/cluster/dht/src/switch.c
index 22289b3a1bf..7c52767f4a9 100644
--- a/xlators/cluster/dht/src/switch.c
+++ b/xlators/cluster/dht/src/switch.c
@@ -1032,11 +1032,6 @@ struct xlator_fops fops = {
 	.xattrop     = dht_xattrop,
 	.fxattrop    = dht_fxattrop,
         .setattr     = dht_setattr,
-#if 0
-	.setdents    = dht_setdents,
-	.getdents    = dht_getdents,
-	.checksum    = dht_checksum,
-#endif
 };
 
 
diff --git a/xlators/debug/error-gen/src/error-gen.c b/xlators/debug/error-gen/src/error-gen.c
index 5d5b1e82d48..bfd5797b554 100644
--- a/xlators/debug/error-gen/src/error-gen.c
+++ b/xlators/debug/error-gen/src/error-gen.c
@@ -141,9 +141,6 @@ sys_error_t error_no_list[] = {
         [GF_FOP_LK]                = { .error_no_count = 4,
                                     .error_no = {EACCES,EFAULT,ENOENT,
                                                  EINTR}},
-        [GF_FOP_CHECKSUM]          = { .error_no_count = 4,
-                                    .error_no = {EACCES,EBADF,
-                                                 ENAMETOOLONG,EINTR}},
         [GF_FOP_XATTROP]           = { .error_no_count = 5,
                                     .error_no = {EACCES,EFAULT,
                                                  ENAMETOOLONG,ENOSYS,
@@ -305,8 +302,6 @@ get_fop_int (char **op_no_str)
                 return GF_FOP_FSTAT;
         else if (!strcmp ((*op_no_str), "lk"))
                 return GF_FOP_LK;
-        else if (!strcmp ((*op_no_str), "checksum"))
-                return GF_FOP_CHECKSUM;
         else if (!strcmp ((*op_no_str), "xattrop"))
                 return GF_FOP_XATTROP;
         else if (!strcmp ((*op_no_str), "fxattrop"))
@@ -1764,45 +1759,6 @@ error_gen_getspec (call_frame_t *frame, xlator_t *this, const char *key,
 
 
 int
-error_gen_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-			int32_t op_ret, int32_t op_errno,
-			uint8_t *file_checksum, uint8_t *dir_checksum)
-{
-	STACK_UNWIND (frame, op_ret, op_errno,
-		      file_checksum, dir_checksum);
-	return 0;
-}
-
-
-int
-error_gen_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc,
-		    int32_t flag)
-{
-	int              op_errno = 0;
-        eg_t            *egp = NULL;
-        int              enable = 1;
-
-        egp = this->private;
-        enable = egp->enable[GF_FOP_CHECKSUM];
-
-        if (enable)
-                op_errno = error_gen (this, GF_FOP_CHECKSUM);
-
-	if (op_errno) {
-		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
-		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
-		return 0;
-	}
-
-	STACK_WIND (frame, error_gen_checksum_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->checksum,
-		    loc, flag);
-	return 0;
-}
-
-
-int
 error_gen_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 		       int32_t op_ret, int32_t op_errno, gf_dirent_t *entries)
 {
@@ -2036,7 +1992,6 @@ struct xlator_fops fops = {
 	.fstat       = error_gen_fstat,
 	.lk          = error_gen_lk,
 	.lookup_cbk  = error_gen_lookup_cbk,
-	.checksum    = error_gen_checksum,
 	.xattrop     = error_gen_xattrop,
 	.fxattrop    = error_gen_fxattrop,
 	.inodelk     = error_gen_inodelk,
diff --git a/xlators/debug/io-stats/src/io-stats.c b/xlators/debug/io-stats/src/io-stats.c
index ee9c29e69a0..ae01e455726 100644
--- a/xlators/debug/io-stats/src/io-stats.c
+++ b/xlators/debug/io-stats/src/io-stats.c
@@ -1328,32 +1328,6 @@ io_stats_lk (call_frame_t *frame, xlator_t *this,
 
 
 int
-io_stats_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno,
-                       uint8_t *fchecksum, uint8_t *dchecksum)
-{
-        STACK_UNWIND_STRICT (checksum, frame, op_ret, op_errno,
-                             fchecksum, dchecksum);
-
-        return 0;
-}
-
-
-int
-io_stats_checksum (call_frame_t *frame, xlator_t *this,
-                   loc_t *loc, int32_t flag)
-{
-        STACK_WIND (frame, io_stats_checksum_cbk,
-                    FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->checksum,
-                    loc, flag);
-
-        return 0;
-}
-
-
-
-int
 io_stats_release (xlator_t *this, fd_t *fd)
 {
         struct ios_fd  *iosfd = NULL;
@@ -1518,7 +1492,6 @@ struct xlator_fops fops = {
         .finodelk    = io_stats_finodelk,
         .entrylk     = io_stats_entrylk,
         .lookup      = io_stats_lookup,
-        .checksum    = io_stats_checksum,
         .xattrop     = io_stats_xattrop,
         .fxattrop    = io_stats_fxattrop,
         .setattr     = io_stats_setattr,
diff --git a/xlators/debug/trace/src/trace.c b/xlators/debug/trace/src/trace.c
index 31a1489b5d0..b9372c244c4 100644
--- a/xlators/debug/trace/src/trace.c
+++ b/xlators/debug/trace/src/trace.c
@@ -1902,37 +1902,6 @@ trace_lk (call_frame_t *frame, xlator_t *this, fd_t *fd,
 }
 
 
-int
-trace_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno,
-                    uint8_t *fchecksum, uint8_t *dchecksum)
-{
-        gf_log (this->name, GF_LOG_NORMAL,
-                "%"PRId64": op_ret (%d), op_errno(%d)",
-                frame->root->unique, op_ret, op_errno);
-
-        STACK_UNWIND_STRICT (checksum, frame, op_ret, op_errno,
-                             fchecksum, dchecksum);
-
-        return 0;
-}
-
-
-int
-trace_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flag)
-{
-        gf_log (this->name, GF_LOG_NORMAL,
-                "%"PRId64": loc->path (%s) flag (%d)",
-                frame->root->unique, loc->path, flag);
-
-        STACK_WIND (frame, trace_checksum_cbk,
-                    FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->checksum,
-                    loc, flag);
-
-        return 0;
-}
-
 
 void
 enable_all_calls (int enabled)
@@ -2089,7 +2058,6 @@ struct xlator_fops fops = {
         .finodelk    = trace_finodelk,
         .entrylk     = trace_entrylk,
         .lookup      = trace_lookup,
-        .checksum    = trace_checksum,
         .xattrop     = trace_xattrop,
         .fxattrop    = trace_fxattrop,
         .setattr     = trace_setattr,
diff --git a/xlators/performance/io-threads/src/io-threads.c b/xlators/performance/io-threads/src/io-threads.c
index 7f265d1dd26..0aef6623f0d 100644
--- a/xlators/performance/io-threads/src/io-threads.c
+++ b/xlators/performance/io-threads/src/io-threads.c
@@ -1269,58 +1269,6 @@ out:
 }
 
 
-int
-iot_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		  int32_t op_ret, int32_t op_errno, uint8_t *file_checksum,
-                  uint8_t *dir_checksum)
-{
-	STACK_UNWIND_STRICT (checksum, frame, op_ret, op_errno, file_checksum,
-                             dir_checksum);
-	return 0;
-}
-
-
-int
-iot_checksum_wrapper (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                      int32_t flags)
-{
-	STACK_WIND (frame, iot_checksum_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->checksum,
-		    loc, flags);
-
-	return 0;
-}
-
-
-int
-iot_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags)
-{
-	call_stub_t *stub = NULL;
-        int         ret = -1;
-
-	stub = fop_checksum_stub (frame, iot_checksum_wrapper, loc, flags);
-
-	if (!stub) {
-		gf_log (this->name, GF_LOG_ERROR,
-                        "cannot create fop_checksum call stub"
-                        "(out of memory)");
-                ret = -ENOMEM;
-                goto out;
-	}
-        ret = iot_schedule_unordered ((iot_conf_t *)this->private, loc->inode,
-                                      stub);
-out:
-        if (ret < 0) {
-		STACK_UNWIND_STRICT (checksum, frame, -1, -ret, NULL, NULL);
-
-                if (stub != NULL) {
-                        call_stub_destroy (stub);
-                }
-        }
-	return 0;
-}
-
 
 int
 iot_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
@@ -2231,7 +2179,6 @@ struct xlator_fops fops = {
 	.fstat       = iot_fstat,       /* O */
 	.truncate    = iot_truncate,    /* V */
 	.ftruncate   = iot_ftruncate,   /* O */
-	.checksum    = iot_checksum,    /* U */
 	.unlink      = iot_unlink,      /* U */
         .lookup      = iot_lookup,      /* U */
         .setattr     = iot_setattr,     /* U */
diff --git a/xlators/performance/stat-prefetch/src/stat-prefetch.c b/xlators/performance/stat-prefetch/src/stat-prefetch.c
index fb338491e0c..a02264c9398 100644
--- a/xlators/performance/stat-prefetch/src/stat-prefetch.c
+++ b/xlators/performance/stat-prefetch/src/stat-prefetch.c
@@ -3082,103 +3082,6 @@ out:
         return 0;
 }
 
-int32_t
-sp_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                 int32_t op_ret, int32_t op_errno, uint8_t *file_checksum,
-                 uint8_t *dir_checksum)
-{
-	SP_STACK_UNWIND (checksum, frame, op_ret, op_errno, file_checksum,
-                         dir_checksum);
-	return 0;
-}
-
-
-int32_t
-sp_checksum_helper (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                    int32_t flag)
-{
-        uint64_t        value     = 0;
-        sp_inode_ctx_t *inode_ctx = NULL;
-        int32_t         ret       = 0, op_ret = -1, op_errno = -1;
-        
-        ret = inode_ctx_get (loc->inode, this, &value);
-        if (ret == -1) {
-                gf_log (this->name, GF_LOG_DEBUG, "context not set in inode "
-                        "(%p)", loc->inode);
-                op_errno = EINVAL;
-                goto unwind;
-        }
-
-        inode_ctx = (sp_inode_ctx_t *)(long) value;
-        GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, inode_ctx, unwind, op_errno,
-                                        EINVAL);
-
-        LOCK (&inode_ctx->lock);
-        {
-                op_ret = inode_ctx->op_ret;
-                op_errno = inode_ctx->op_errno;
-        }
-        UNLOCK (&inode_ctx->lock);
-
-        if (op_ret == -1) {
-                goto unwind;
-        }
-
-        STACK_WIND (frame, sp_checksum_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->checksum, loc, flag);
-
-        return 0;
-
-unwind:
-        SP_STACK_UNWIND (checksum, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-sp_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flag)
-{
-        sp_cache_t     *cache     = NULL;
-        int32_t         op_errno  = -1;
-        call_stub_t    *stub      = NULL;
-        char            can_wind  = 0, need_lookup = 0, need_unwind = 1;
-
-        GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, loc, out, op_errno,
-                                        EINVAL);
-        GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, loc->name, out,
-                                        op_errno, EINVAL);
-
-        cache = sp_get_cache_inode (this, loc->parent, frame->root->pid);
-        if (cache) {
-                sp_cache_remove_entry (cache, (char *)loc->name, 0);
-                sp_cache_unref (cache);
-        }
-
-        stub = fop_checksum_stub (frame, sp_checksum_helper, loc, flag);
-        if (stub == NULL) {
-                op_errno = ENOMEM;
-                gf_log (this->name, GF_LOG_ERROR, "out of memory");
-                goto out;
-        }
-
-        sp_process_inode_ctx (frame, this, loc, stub, &need_unwind,
-                              &need_lookup, &can_wind, &op_errno,
-                              GF_FOP_CHECKSUM);
-
-out:
-        if (need_unwind) {
-                SP_STACK_UNWIND (checksum, frame, -1, op_errno, NULL, NULL);
-        } else if (need_lookup) {
-                STACK_WIND (frame, sp_lookup_cbk, FIRST_CHILD(this),
-                            FIRST_CHILD(this)->fops->lookup, loc, NULL);
-        } else if (can_wind) {
-                STACK_WIND (frame, sp_checksum_cbk, FIRST_CHILD(this),
-                            FIRST_CHILD(this)->fops->checksum, loc, flag);
-        }
-
-        return 0;
-}
-
 
 int32_t
 sp_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
@@ -3761,7 +3664,6 @@ struct xlator_fops fops = {
         .rename      = sp_rename,
         .setxattr    = sp_setxattr,
         .removexattr = sp_removexattr,
-        .checksum    = sp_checksum,
         .xattrop     = sp_xattrop,
         .fxattrop    = sp_fxattrop,
         .setattr     = sp_setattr,
diff --git a/xlators/protocol/client/src/client.c b/xlators/protocol/client/src/client.c
index bad814a8198..6ad5944007f 100644
--- a/xlators/protocol/client/src/client.c
+++ b/xlators/protocol/client/src/client.c
@@ -1169,34 +1169,6 @@ out:
 
 
 int32_t
-client_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                 int32_t flag)
-{
-        int          ret  = -1;
-        clnt_conf_t *conf = NULL;
-        rpc_clnt_procedure_t *proc = NULL;
-        clnt_args_t  args = {0,};
-
-        conf = this->private;
-        if (!conf->fops)
-                goto out;
-
-        args.loc = loc;
-        args.flags = flag;
-
-        proc = &conf->fops->proctable[GF_FOP_CHECKSUM];
-        if (proc->fn)
-                ret = proc->fn (frame, this, &args);
-out:
-        if (ret)
-                STACK_UNWIND_STRICT (checksum, frame, -1, ENOTCONN, NULL, NULL);
-
-	return 0;
-}
-
-
-
-int32_t
 client_rchecksum (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
                   int32_t len)
 {
@@ -1741,7 +1713,6 @@ struct xlator_fops fops = {
         .entrylk     = client_entrylk,
         .fentrylk    = client_fentrylk,
         .lookup      = client_lookup,
-        .checksum    = client_checksum,
         .rchecksum   = client_rchecksum,
         .xattrop     = client_xattrop,
         .fxattrop    = client_fxattrop,
diff --git a/xlators/protocol/client/src/client3_1-fops.c b/xlators/protocol/client/src/client3_1-fops.c
index 5204ef032da..07145a097cd 100644
--- a/xlators/protocol/client/src/client3_1-fops.c
+++ b/xlators/protocol/client/src/client3_1-fops.c
@@ -1549,47 +1549,6 @@ out:
 }
 
 int
-client3_1_checksum_cbk (struct rpc_req *req, struct iovec *iov, int count,
-                        void *myframe)
-{
-        call_frame_t *frame = NULL;
-        gfs3_checksum_rsp rsp        = {0,};
-        int              ret        = 0;
-
-        frame = myframe;
-
-        if (-1 == req->rpc_status) {
-                rsp.op_ret   = -1;
-                rsp.op_errno = ENOTCONN;
-                goto out;
-        }
-
-        ret = xdr_to_checksum_rsp (*iov, &rsp);
-        if (ret < 0) {
-                gf_log ("", GF_LOG_ERROR, "error");
-                rsp.op_ret   = -1;
-                rsp.op_errno = EINVAL;
-                goto out;
-        }
-
-out:
-        STACK_UNWIND_STRICT (checksum, frame, rsp.op_ret,
-                             gf_error_to_errno (rsp.op_errno),
-                             (uint8_t *)rsp.fchecksum.fchecksum_val,
-                             (uint8_t *)rsp.dchecksum.dchecksum_val);
-
-        /* This is allocated by the libc while decoding RPC msg */
-        /* Hence no 'GF_FREE', but just 'free' */
-        if (rsp.fchecksum.fchecksum_val) {
-                free (rsp.fchecksum.fchecksum_val);
-        }
-        if (rsp.dchecksum.dchecksum_val) {
-                free (rsp.dchecksum.dchecksum_val);
-        }
-        return 0;
-}
-
-int
 client3_1_lk_cbk (struct rpc_req *req, struct iovec *iov, int count,
                   void *myframe)
 {
@@ -4421,48 +4380,6 @@ unwind:
 }
 
 
-
-
-int32_t
-client3_1_checksum (call_frame_t *frame, xlator_t *this,
-                    void *data)
-{
-        clnt_conf_t       *conf     = NULL;
-        clnt_args_t       *args     = NULL;
-        gfs3_checksum_req  req      = {0,};
-        int                ret      = 0;
-        int                op_errno = ESTALE;
-
-        if (!frame || !this || !data)
-                goto unwind;
-
-        args = data;
-
-        ret = inode_ctx_get2 (args->loc->inode, this, &req.ino, &req.gen);
-        if (args->loc->inode->ino && ret < 0) {
-                gf_log (this->name, GF_LOG_TRACE,
-                        "STAT %"PRId64" (%s): "
-                        "failed to get remote inode number",
-                        args->loc->inode->ino, args->loc->path);
-                        goto unwind;
-        }
-        req.path = (char *)args->loc->path;
-        req.flag = args->flags;
-        req.gfs_id = GFS3_OP_CHECKSUM;
-
-        conf = this->private;
-
-        client_submit_request (this, &req, frame, conf->fops, GFS3_OP_CHECKSUM,
-                               client3_1_checksum_cbk, NULL, xdr_from_checksum_req);
-
-        return 0;
-unwind:
-        STACK_UNWIND_STRICT (checksum, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-
 int32_t
 client3_1_rchecksum (call_frame_t *frame, xlator_t *this,
                      void *data)
@@ -4748,7 +4665,6 @@ rpc_clnt_procedure_t clnt3_1_fop_actors[GF_FOP_MAXVALUE] = {
         [GF_FOP_FINODELK]    = { "FINODELK",    client3_1_finodelk },
         [GF_FOP_ENTRYLK]     = { "ENTRYLK",     client3_1_entrylk },
         [GF_FOP_FENTRYLK]    = { "FENTRYLK",    client3_1_fentrylk },
-        [GF_FOP_CHECKSUM]    = { "CHECKSUM",    client3_1_checksum },
         [GF_FOP_XATTROP]     = { "XATTROP",     client3_1_xattrop },
         [GF_FOP_FXATTROP]    = { "FXATTROP",    client3_1_fxattrop },
         [GF_FOP_FGETXATTR]   = { "FGETXATTR",   client3_1_fgetxattr },
@@ -4797,7 +4713,6 @@ char *clnt3_1_fop_names[GFS3_OP_MAXVALUE] = {
         [GFS3_OP_FINODELK]    = "FINODELK",
         [GFS3_OP_ENTRYLK]     = "ENTRYLK",
         [GFS3_OP_FENTRYLK]    = "FENTRYLK",
-        [GFS3_OP_CHECKSUM]    = "CHECKSUM",
         [GFS3_OP_XATTROP]     = "XATTROP",
         [GFS3_OP_FXATTROP]    = "FXATTROP",
         [GFS3_OP_FGETXATTR]   = "FGETXATTR",
diff --git a/xlators/protocol/legacy/client/src/client-protocol.c b/xlators/protocol/legacy/client/src/client-protocol.c
index 0dc5bee5d56..e8d5d8f0139 100644
--- a/xlators/protocol/legacy/client/src/client-protocol.c
+++ b/xlators/protocol/legacy/client/src/client-protocol.c
@@ -5217,71 +5217,6 @@ client_getspec_cbk (call_frame_t *frame, gf_hdr_common_t *hdr, size_t hdrlen,
         return 0;
 }
 
-int
-client_checksum (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flag)
-{
-        gf_hdr_common_t       *hdr = NULL;
-        gf_fop_checksum_req_t *req = NULL;
-        size_t                 hdrlen = -1;
-        int                    ret = -1;
-        ino_t                  ino = 0;
-        uint64_t               gen = 0;
-
-        hdrlen = gf_hdr_len (req, strlen (loc->path) + 1);
-        hdr    = gf_hdr_new (req, strlen (loc->path) + 1);
-        req    = gf_param (hdr);
-
-        ret = inode_ctx_get2 (loc->inode, this, &ino, &gen);
-        if (loc->inode->ino && ret < 0) {
-                gf_log (this->name, GF_LOG_DEBUG,
-                        "CHECKSUM %"PRId64" (%s): "
-                        "failed to get remote inode number",
-                        loc->inode->ino, loc->path);
-                STACK_UNWIND (frame, -1, EINVAL, NULL, NULL);
-                return 0;
-
-        }
-
-        req->ino  = hton64 (ino);
-        req->gen  = hton64 (gen);
-        req->flag = hton32 (flag);
-        strcpy (req->path, loc->path);
-
-        ret = protocol_client_xfer (frame, this,
-                                    CLIENT_CHANNEL (this, CHANNEL_BULK),
-                                    GF_OP_TYPE_FOP_REQUEST, GF_PROTO_FOP_CHECKSUM,
-                                    hdr, hdrlen, NULL, 0, NULL);
-
-        return ret;
-}
-
-
-int
-client_checksum_cbk (call_frame_t *frame, gf_hdr_common_t *hdr, size_t hdrlen,
-                     struct iobuf *iobuf)
-{
-        gf_fop_checksum_rsp_t *rsp = NULL;
-        int32_t                op_ret = 0;
-        int32_t                op_errno = 0;
-        int32_t                gf_errno = 0;
-        unsigned char         *fchecksum = NULL;
-        unsigned char         *dchecksum = NULL;
-
-        rsp = gf_param (hdr);
-
-        op_ret   = ntoh32 (hdr->rsp.op_ret);
-        gf_errno = ntoh32 (hdr->rsp.op_errno);
-        op_errno = gf_error_to_errno (gf_errno);
-
-        if (op_ret >= 0) {
-                fchecksum = rsp->fchecksum;
-                dchecksum = rsp->dchecksum + NAME_MAX;
-        }
-
-        STACK_UNWIND (frame, op_ret, op_errno, fchecksum, dchecksum);
-        return 0;
-}
-
 
 int
 client_rchecksum (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
@@ -6023,7 +5958,6 @@ static gf_op_t gf_fops[] = {
         [GF_PROTO_FOP_FINODELK]       =  client_finodelk_cbk,
         [GF_PROTO_FOP_ENTRYLK]        =  client_entrylk_cbk,
         [GF_PROTO_FOP_FENTRYLK]       =  client_fentrylk_cbk,
-        [GF_PROTO_FOP_CHECKSUM]       =  client_checksum_cbk,
         [GF_PROTO_FOP_RCHECKSUM]      =  client_rchecksum_cbk,
         [GF_PROTO_FOP_XATTROP]        =  client_xattrop_cbk,
         [GF_PROTO_FOP_FXATTROP]       =  client_fxattrop_cbk,
@@ -6687,7 +6621,6 @@ struct xlator_fops fops = {
         .entrylk     = client_entrylk,
         .fentrylk    = client_fentrylk,
         .lookup      = client_lookup,
-        .checksum    = client_checksum,
         .rchecksum   = client_rchecksum,
         .xattrop     = client_xattrop,
         .fxattrop    = client_fxattrop,
diff --git a/xlators/protocol/legacy/server/src/server-protocol.c b/xlators/protocol/legacy/server/src/server-protocol.c
index da0303019a3..a6d30ca4a2e 100644
--- a/xlators/protocol/legacy/server/src/server-protocol.c
+++ b/xlators/protocol/legacy/server/src/server-protocol.c
@@ -5193,84 +5193,26 @@ fail:
 }
 
 
-static int
-server_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno,
-                     uint8_t *fchecksum, uint8_t *dchecksum)
-{
-        gf_hdr_common_t       *hdr = NULL;
-        gf_fop_checksum_rsp_t *rsp = NULL;
-        size_t                 hdrlen = 0;
-        int32_t                gf_errno = 0;
-
-        hdrlen = gf_hdr_len (rsp, NAME_MAX + 1 + NAME_MAX + 1);
-        hdr    = gf_hdr_new (rsp, NAME_MAX + 1 + NAME_MAX + 1);
-        rsp    = gf_param (hdr);
-
-        hdr->rsp.op_ret = hton32 (op_ret);
-        gf_errno        = gf_errno_to_error (op_errno);
-        hdr->rsp.op_errno = hton32 (gf_errno);
-
-        if (op_ret >= 0) {
-                memcpy (rsp->fchecksum, fchecksum, NAME_MAX);
-                rsp->fchecksum[NAME_MAX] =  '\0';
-                memcpy (rsp->dchecksum + NAME_MAX,
-                        dchecksum, NAME_MAX);
-                rsp->dchecksum[NAME_MAX + NAME_MAX] = '\0';
-        }
-
-        protocol_server_reply (frame, GF_OP_TYPE_FOP_REPLY, GF_PROTO_FOP_CHECKSUM,
-                               hdr, hdrlen, NULL, 0, NULL);
-
-        return 0;
-}
-
-static int
-server_checksum_resume (call_frame_t *frame, xlator_t *bound_xl)
-{
-        server_state_t *state = NULL;
-        int             op_ret = 0;
-        int             op_errno = 0;
-
-        state = CALL_STATE (frame);
-
-        if (state->resolve.op_ret != 0) {
-                op_ret   = state->resolve.op_ret;
-                op_errno = state->resolve.op_errno;
-                goto err;
-        }
-
-        STACK_WIND (frame, server_checksum_cbk,
-                    BOUND_XL(frame),
-                    BOUND_XL(frame)->fops->checksum,
-                    &state->loc, state->flags);
-
-        return 0;
-err:
-        server_checksum_cbk (frame, NULL, frame->this, state->resolve.op_ret,
-                             state->resolve.op_errno, NULL, NULL);
-
-        return 0;
-}
 
 static int
 server_checksum (call_frame_t *frame, xlator_t *bound_xl,
                  gf_hdr_common_t *hdr, size_t hdrlen,
                  struct iobuf *iobuf)
 {
-        gf_fop_checksum_req_t *req = NULL;
-        server_state_t        *state = NULL;
+        gf_hdr_common_t     *rsp_hdr = NULL;
+        gf_mop_ping_rsp_t   *rsp = NULL;     /* Using for  NULL */
+        size_t               rsp_hdrlen = 0;
+        int32_t              gf_errno = 0;
 
-        req = gf_param (hdr);
-        state = CALL_STATE (frame);
+        rsp_hdrlen = gf_hdr_len (rsp, 0);
+        rsp_hdr    = gf_hdr_new (rsp, 0);
 
-        state->resolve.type = RESOLVE_MAY;
-        state->resolve.path = gf_strdup (req->path);
-        state->resolve.gen = ntoh64 (req->gen);
-        state->resolve.ino = ntoh64 (req->ino);
-        state->flags = ntoh32 (req->flag);
+        gf_errno = gf_errno_to_error (ENOSYS);
+        hdr->rsp.op_errno = hton32 (gf_errno);
+        hdr->rsp.op_ret = -1;
 
-        gf_resolve_and_resume (frame, server_checksum_resume);
+        protocol_server_reply (frame, GF_OP_TYPE_FOP_REPLY, GF_PROTO_FOP_CHECKSUM,
+                               rsp_hdr, rsp_hdrlen, NULL, 0, NULL);
 
         return 0;
 }
diff --git a/xlators/protocol/lib/src/glusterfs-xdr.c b/xlators/protocol/lib/src/glusterfs-xdr.c
index e8a254094f9..cbc4d7cef47 100644
--- a/xlators/protocol/lib/src/glusterfs-xdr.c
+++ b/xlators/protocol/lib/src/glusterfs-xdr.c
@@ -1365,39 +1365,6 @@ xdr_gfs3_fentrylk_req (XDR *xdrs, gfs3_fentrylk_req *objp)
 	return TRUE;
 }
 
-bool_t
-xdr_gfs3_checksum_req (XDR *xdrs, gfs3_checksum_req *objp)
-{
-
-	 if (!xdr_u_quad_t (xdrs, &objp->gfs_id))
-		 return FALSE;
-	 if (!xdr_u_quad_t (xdrs, &objp->ino))
-		 return FALSE;
-	 if (!xdr_u_quad_t (xdrs, &objp->gen))
-		 return FALSE;
-	 if (!xdr_u_int (xdrs, &objp->flag))
-		 return FALSE;
-	 if (!xdr_string (xdrs, &objp->path, ~0))
-		 return FALSE;
-	return TRUE;
-}
-
-bool_t
-xdr_gfs3_checksum_rsp (XDR *xdrs, gfs3_checksum_rsp *objp)
-{
-
-	 if (!xdr_u_quad_t (xdrs, &objp->gfs_id))
-		 return FALSE;
-	 if (!xdr_int (xdrs, &objp->op_ret))
-		 return FALSE;
-	 if (!xdr_int (xdrs, &objp->op_errno))
-		 return FALSE;
-	 if (!xdr_bytes (xdrs, (char **)&objp->fchecksum.fchecksum_val, (u_int *) &objp->fchecksum.fchecksum_len, ~0))
-		 return FALSE;
-	 if (!xdr_bytes (xdrs, (char **)&objp->dchecksum.dchecksum_val, (u_int *) &objp->dchecksum.dchecksum_len, ~0))
-		 return FALSE;
-	return TRUE;
-}
 
 bool_t
 xdr_gfs3_setattr_req (XDR *xdrs, gfs3_setattr_req *objp)
diff --git a/xlators/protocol/lib/src/glusterfs-xdr.h b/xlators/protocol/lib/src/glusterfs-xdr.h
index 72f131c746c..45ce3ff9bed 100644
--- a/xlators/protocol/lib/src/glusterfs-xdr.h
+++ b/xlators/protocol/lib/src/glusterfs-xdr.h
@@ -943,29 +943,6 @@ struct gfs3_fentrylk_req {
 };
 typedef struct gfs3_fentrylk_req gfs3_fentrylk_req;
 
-struct gfs3_checksum_req {
-	u_quad_t gfs_id;
-	u_quad_t ino;
-	u_quad_t gen;
-	u_int flag;
-	char *path;
-};
-typedef struct gfs3_checksum_req gfs3_checksum_req;
-
-struct gfs3_checksum_rsp {
-	u_quad_t gfs_id;
-	int op_ret;
-	int op_errno;
-	struct {
-		u_int fchecksum_len;
-		char *fchecksum_val;
-	} fchecksum;
-	struct {
-		u_int dchecksum_len;
-		char *dchecksum_val;
-	} dchecksum;
-};
-typedef struct gfs3_checksum_rsp gfs3_checksum_rsp;
 
 struct gfs3_setattr_req {
 	u_quad_t gfs_id;
@@ -1217,8 +1194,6 @@ extern  bool_t xdr_gfs3_fstat_req (XDR *, gfs3_fstat_req*);
 extern  bool_t xdr_gfs3_fstat_rsp (XDR *, gfs3_fstat_rsp*);
 extern  bool_t xdr_gfs3_entrylk_req (XDR *, gfs3_entrylk_req*);
 extern  bool_t xdr_gfs3_fentrylk_req (XDR *, gfs3_fentrylk_req*);
-extern  bool_t xdr_gfs3_checksum_req (XDR *, gfs3_checksum_req*);
-extern  bool_t xdr_gfs3_checksum_rsp (XDR *, gfs3_checksum_rsp*);
 extern  bool_t xdr_gfs3_setattr_req (XDR *, gfs3_setattr_req*);
 extern  bool_t xdr_gfs3_setattr_rsp (XDR *, gfs3_setattr_rsp*);
 extern  bool_t xdr_gfs3_fsetattr_req (XDR *, gfs3_fsetattr_req*);
@@ -1308,8 +1283,6 @@ extern bool_t xdr_gfs3_fstat_req ();
 extern bool_t xdr_gfs3_fstat_rsp ();
 extern bool_t xdr_gfs3_entrylk_req ();
 extern bool_t xdr_gfs3_fentrylk_req ();
-extern bool_t xdr_gfs3_checksum_req ();
-extern bool_t xdr_gfs3_checksum_rsp ();
 extern bool_t xdr_gfs3_setattr_req ();
 extern bool_t xdr_gfs3_setattr_rsp ();
 extern bool_t xdr_gfs3_fsetattr_req ();
diff --git a/xlators/protocol/lib/src/glusterfs3.x b/xlators/protocol/lib/src/glusterfs3.x
index c9510527c27..b2eb9556c02 100644
--- a/xlators/protocol/lib/src/glusterfs3.x
+++ b/xlators/protocol/lib/src/glusterfs3.x
@@ -634,21 +634,6 @@ struct gfs3_fstat_req {
 };
 
 
-struct   gfs3_checksum_req {
-        unsigned hyper gfs_id;
-	unsigned hyper  ino;
-        unsigned hyper  gen;
-	unsigned int  flag;
-	string      path<>;
-};
- struct gfs3_checksum_rsp {
-        unsigned hyper gfs_id;
-        int    op_ret;
-        int    op_errno;
-        opaque fchecksum<>;
-	opaque dchecksum<>;
-}  ;
-
  struct gfs3_setattr_req {
         unsigned hyper gfs_id;
         unsigned hyper       ino;
diff --git a/xlators/protocol/lib/src/msg-xdr.c b/xlators/protocol/lib/src/msg-xdr.c
index 8cab3726c3d..3fe5ad5f65d 100644
--- a/xlators/protocol/lib/src/msg-xdr.c
+++ b/xlators/protocol/lib/src/msg-xdr.c
@@ -333,13 +333,6 @@ xdr_serialize_opendir_rsp (struct iovec outmsg, void *rsp)
 }
 
 ssize_t
-xdr_serialize_checksum_rsp (struct iovec outmsg, void *rsp)
-{
-        return xdr_serialize_generic (outmsg, (void *)rsp,
-                                      (xdrproc_t)xdr_gfs3_checksum_rsp);
-}
-
-ssize_t
 xdr_serialize_ftruncate_rsp (struct iovec outmsg, void *rsp)
 {
         return xdr_serialize_generic (outmsg, (void *)rsp,
@@ -579,13 +572,6 @@ xdr_to_fstat_req (struct iovec inmsg, void *args)
         return xdr_to_generic (inmsg, (void *)args,
                                (xdrproc_t)xdr_gfs3_fstat_req);
 }
-
-ssize_t
-xdr_to_checksum_req (struct iovec inmsg, void *args)
-{
-        return xdr_to_generic (inmsg, (void *)args,
-                               (xdrproc_t)xdr_gfs3_checksum_req);
-}
 ssize_t
 xdr_to_rchecksum_req (struct iovec inmsg, void *args)
 {
@@ -953,13 +939,6 @@ xdr_from_statfs_req (struct iovec outmsg, void *req)
 
 }
 ssize_t
-xdr_from_checksum_req (struct iovec outmsg, void *req)
-{
-        return xdr_serialize_generic (outmsg, (void *)req,
-                                      (xdrproc_t)xdr_gfs3_checksum_req);
-
-}
-ssize_t
 xdr_from_rchecksum_req (struct iovec outmsg, void *req)
 {
         return xdr_serialize_generic (outmsg, (void *)req,
@@ -1207,13 +1186,6 @@ xdr_to_statfs_rsp (struct iovec outmsg, void *rsp)
 
 }
 ssize_t
-xdr_to_checksum_rsp (struct iovec outmsg, void *rsp)
-{
-        return xdr_to_generic (outmsg, (void *)rsp,
-                                      (xdrproc_t)xdr_gfs3_checksum_rsp);
-
-}
-ssize_t
 xdr_to_rchecksum_rsp (struct iovec outmsg, void *rsp)
 {
         return xdr_to_generic (outmsg, (void *)rsp,
diff --git a/xlators/protocol/lib/src/msg-xdr.h b/xlators/protocol/lib/src/msg-xdr.h
index 872d9401e48..59b6ca30112 100644
--- a/xlators/protocol/lib/src/msg-xdr.h
+++ b/xlators/protocol/lib/src/msg-xdr.h
@@ -93,9 +93,6 @@ ssize_t
 xdr_serialize_ftruncate_rsp (struct iovec outmsg, void *rsp);
 
 ssize_t
-xdr_serialize_checksum_rsp (struct iovec outmsg, void *rsp);
-
-ssize_t
 xdr_serialize_statfs_rsp (struct iovec outmsg, void *rsp);
 
 
@@ -266,9 +263,6 @@ ssize_t
 xdr_to_rmdir_req (struct iovec inmsg, void *args);
 
 ssize_t
-xdr_to_checksum_req (struct iovec inmsg, void *args);
-
-ssize_t
 xdr_to_rchecksum_req (struct iovec inmsg, void *args);
 
 ssize_t
@@ -369,9 +363,6 @@ ssize_t
 xdr_from_fxattrop_req (struct iovec outmsg, void *args);
 
 ssize_t
-xdr_from_checksum_req (struct iovec outmsg, void *args);
-
-ssize_t
 xdr_from_rchecksum_req (struct iovec outmsg, void *args);
 
 ssize_t
@@ -515,8 +506,6 @@ ssize_t
 xdr_to_fgetxattr_rsp (struct iovec inmsg, void *args);
 
 ssize_t
-xdr_to_checksum_rsp (struct iovec inmsg, void *args);
-ssize_t
 xdr_to_rchecksum_rsp (struct iovec inmsg, void *args);
 
 ssize_t
diff --git a/xlators/protocol/lib/src/protocol-common.h b/xlators/protocol/lib/src/protocol-common.h
index 5378d90ba45..5590960a6d9 100644
--- a/xlators/protocol/lib/src/protocol-common.h
+++ b/xlators/protocol/lib/src/protocol-common.h
@@ -54,7 +54,6 @@ enum gf_fop_procnum {
         GFS3_OP_FINODELK,
 	GFS3_OP_ENTRYLK,
 	GFS3_OP_FENTRYLK,
-        GFS3_OP_CHECKSUM,
         GFS3_OP_XATTROP,
         GFS3_OP_FXATTROP,
         GFS3_OP_FGETXATTR,
diff --git a/xlators/protocol/server/src/server.c b/xlators/protocol/server/src/server.c
index 1210a807a9a..00247c1eef8 100644
--- a/xlators/protocol/server/src/server.c
+++ b/xlators/protocol/server/src/server.c
@@ -167,79 +167,6 @@ xdr_to_glusterfs_req (rpcsvc_request_t *req, void *arg, gfs_serialize_t sfunc)
         return ret;
 }
 
-
-#if 0
-/*
- * prototype of operations function for each of mop and
- * fop at server protocol level
- *
- * @frame: call frame pointer
- * @bound_xl: the xlator that this frame is bound to
- * @params: parameters dictionary
- *
- * to be used by protocol interpret, _not_ for exterenal reference
- */
-typedef int32_t (*gf_op_t) (call_frame_t *frame, xlator_t *bould_xl,
-                            gf_hdr_common_t *hdr, size_t hdrlen,
-                            struct iobuf *iobuf);
-
-
-static gf_op_t gf_fops[] = {
-        [GF_FOP_STAT]         =  server_stat,
-        [GF_FOP_READLINK]     =  server_readlink,
-        [GF_FOP_MKNOD]        =  server_mknod,
-        [GF_FOP_MKDIR]        =  server_mkdir,
-        [GF_FOP_UNLINK]       =  server_unlink,
-        [GF_FOP_RMDIR]        =  server_rmdir,
-        [GF_FOP_SYMLINK]      =  server_symlink,
-        [GF_FOP_RENAME]       =  server_rename,
-        [GF_FOP_LINK]         =  server_link,
-        [GF_FOP_TRUNCATE]     =  server_truncate,
-        [GF_FOP_OPEN]         =  server_open,
-        [GF_FOP_READ]         =  server_readv,
-        [GF_FOP_WRITE]        =  server_writev,
-        [GF_FOP_STATFS]       =  server_statfs,
-        [GF_FOP_FLUSH]        =  server_flush,
-        [GF_FOP_FSYNC]        =  server_fsync,
-        [GF_FOP_SETXATTR]     =  server_setxattr,
-        [GF_FOP_GETXATTR]     =  server_getxattr,
-        [GF_FOP_FGETXATTR]    =  server_fgetxattr,
-        [GF_FOP_FSETXATTR]    =  server_fsetxattr,
-        [GF_FOP_REMOVEXATTR]  =  server_removexattr,
-        [GF_FOP_OPENDIR]      =  server_opendir,
-        [GF_FOP_FSYNCDIR]     =  server_fsyncdir,
-        [GF_FOP_ACCESS]       =  server_access,
-        [GF_FOP_CREATE]       =  server_create,
-        [GF_FOP_FTRUNCATE]    =  server_ftruncate,
-        [GF_FOP_FSTAT]        =  server_fstat,
-        [GF_FOP_LK]           =  server_lk,
-        [GF_FOP_LOOKUP]       =  server_lookup,
-        [GF_FOP_READDIR]      =  server_readdir,
-        [GF_FOP_READDIRP]     =  server_readdirp,
-        [GF_FOP_INODELK]      =  server_inodelk,
-        [GF_FOP_FINODELK]     =  server_finodelk,
-        [GF_FOP_ENTRYLK]      =  server_entrylk,
-        [GF_FOP_FENTRYLK]     =  server_fentrylk,
-        [GF_FOP_CHECKSUM]     =  server_checksum,
-        [GF_FOP_RCHECKSUM]    =  server_rchecksum,
-        [GF_FOP_XATTROP]      =  server_xattrop,
-        [GF_FOP_FXATTROP]     =  server_fxattrop,
-        [GF_FOP_SETATTR]      =  server_setattr,
-        [GF_FOP_FSETATTR]     =  server_fsetattr,
-        [GF_FOP_SETDENTS]     =  server_setdents,
-        [GF_FOP_GETDENTS]     =  server_getdents,
-        [GF_FOP_LOCK_NOTIFY]  =  server_lock_notify,
-        [GF_FOP_LOCK_FNOTIFY] =  server_lock_fnotify,
-};
-
-static gf_op_t gf_cbks[] = {
-        [GF_CBK_FORGET]     = server_forget,
-        [GF_CBK_RELEASE]    = server_release,
-        [GF_CBK_RELEASEDIR] = server_releasedir
-};
-
-#endif
-
 int
 server_fd (xlator_t *this)
 {
diff --git a/xlators/protocol/server/src/server3_1-fops.c b/xlators/protocol/server/src/server3_1-fops.c
index 825e66c3c0b..1cf4e0ded33 100644
--- a/xlators/protocol/server/src/server3_1-fops.c
+++ b/xlators/protocol/server/src/server3_1-fops.c
@@ -1258,34 +1258,6 @@ server_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 }
 
 int
-server_checksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno,
-                     uint8_t *fchecksum, uint8_t *dchecksum)
-{
-        gfs3_checksum_rsp  rsp = {0,};
-        rpcsvc_request_t  *req = NULL;
-
-        req           = frame->local;
-
-        rsp.gfs_id    = req->gfs_id;
-        rsp.op_ret    = op_ret;
-        rsp.op_errno  = gf_errno_to_error (op_errno);
-
-        if (op_ret >= 0) {
-                rsp.fchecksum.fchecksum_val = (char *)fchecksum;
-                rsp.fchecksum.fchecksum_len = NAME_MAX;
-                rsp.dchecksum.dchecksum_val = (char *)dchecksum;
-                rsp.dchecksum.dchecksum_len = NAME_MAX;
-        }
-
-        server_submit_reply (frame, req, &rsp, NULL, 0, NULL,
-                             xdr_serialize_checksum_rsp);
-
-        return 0;
-}
-
-
-int
 server_rchecksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                       int32_t op_ret, int32_t op_errno,
                       uint32_t weak_checksum, uint8_t *strong_checksum)
@@ -1777,32 +1749,6 @@ err:
 }
 
 int
-server_checksum_resume (call_frame_t *frame, xlator_t *bound_xl)
-{
-        server_state_t *state = NULL;
-        int             op_ret = 0;
-        int             op_errno = 0;
-
-        state = CALL_STATE (frame);
-
-        if (state->resolve.op_ret != 0) {
-                op_ret   = state->resolve.op_ret;
-                op_errno = state->resolve.op_errno;
-                goto err;
-        }
-
-        STACK_WIND (frame, server_checksum_cbk, bound_xl,
-                    bound_xl->fops->checksum, &state->loc, state->flags);
-
-        return 0;
-err:
-        server_checksum_cbk (frame, NULL, frame->this, state->resolve.op_ret,
-                             state->resolve.op_errno, NULL, NULL);
-
-        return 0;
-}
-
-int
 server_lk_resume (call_frame_t *frame, xlator_t *bound_xl)
 {
         server_state_t *state = NULL;
@@ -4536,48 +4482,6 @@ out:
         return 0;
 }
 
-int
-server_checksum (rpcsvc_request_t *req)
-{
-        server_state_t      *state                 = NULL;
-        server_connection_t *conn                  = NULL;
-        call_frame_t        *frame                 = NULL;
-        gfs3_checksum_req    args                  = {0,};
-        char                 path[SERVER_PATH_MAX] = {0,};
-
-        if (!req)
-                return 0;
-
-        conn = req->conn->trans->xl_private;
-
-        args.path = path;
-        if (!xdr_to_checksum_req (req->msg[0], &args)) {
-                //failed to decode msg;
-                req->rpc_err = GARBAGE_ARGS;
-                goto out;
-        }
-
-        frame = get_frame_from_request (req);
-        if (!frame) {
-                // something wrong, mostly insufficient memory
-                req->rpc_err = GARBAGE_ARGS; /* TODO */
-                goto out;
-        }
-
-        state = CALL_STATE (frame);
-
-        state->resolve.type = RESOLVE_MAY;
-        state->resolve.path = gf_strdup (args.path);
-        state->resolve.gen  = args.gen;
-        state->resolve.ino  = args.ino;
-        state->flags        = args.flag;
-
-        resolve_and_resume (frame, server_checksum_resume);
-out:
-        return 0;
-}
-
-
 
 int
 server_rchecksum (rpcsvc_request_t *req)
@@ -4808,7 +4712,6 @@ rpcsvc_actor_t glusterfs3_1_fop_actors[] = {
         [GFS3_OP_FINODELK]    = { "FINODELK",   GFS3_OP_FINODELK, server_finodelk, NULL, NULL },
 	[GFS3_OP_ENTRYLK]     = { "ENTRYLK",    GFS3_OP_ENTRYLK, server_entrylk, NULL, NULL },
 	[GFS3_OP_FENTRYLK]    = { "FENTRYLK",   GFS3_OP_FENTRYLK, server_fentrylk, NULL, NULL },
-        [GFS3_OP_CHECKSUM]    = { "CHECKSUM",   GFS3_OP_CHECKSUM, server_checksum, NULL, NULL },
         [GFS3_OP_XATTROP]     = { "XATTROP",    GFS3_OP_XATTROP, server_xattrop, NULL, NULL },
         [GFS3_OP_FXATTROP]    = { "FXATTROP",   GFS3_OP_FXATTROP, server_fxattrop, NULL, NULL },
         [GFS3_OP_FGETXATTR]   = { "FGETXATTR",  GFS3_OP_FGETXATTR, server_fgetxattr, NULL, NULL },
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 2aba365e62b..7c0d165ac99 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -4104,79 +4104,6 @@ posix_readdirp (call_frame_t *frame, xlator_t *this,
         return 0;
 }
 
-
-int32_t
-posix_checksum (call_frame_t *frame, xlator_t *this,
-                loc_t *loc, int32_t flag)
-{
-        char *          real_path                      = NULL;
-        DIR *           dir                            = NULL;
-        struct dirent * dirent                         = NULL;
-        uint8_t         file_checksum[NAME_MAX] = {0,};
-        uint8_t         dir_checksum[NAME_MAX]  = {0,};
-        int32_t         op_ret                         = -1;
-        int32_t         op_errno                       = 0;
-        int             i                              = 0;
-        int             length                         = 0;
-
-        struct iatt buf                        = {0,};
-        char        tmp_real_path[ZR_PATH_MAX] = {0,};
-        int         ret                        = -1;
-
-        MAKE_REAL_PATH (real_path, this, loc->path);
-
-        dir = opendir (real_path);
-
-        if (!dir){
-                op_errno = errno;
-                gf_log (this->name, GF_LOG_ERROR,
-			"opendir() failed on `%s': %s",
-                        real_path, strerror (op_errno));
-                goto out;
-        }
-
-        while ((dirent = readdir (dir))) {
-                errno = 0;
-                if (!dirent) {
-                        if (errno != 0) {
-                                op_errno = errno;
-                                gf_log (this->name, GF_LOG_ERROR,
-                                        "readdir() failed on dir=%p: %s",
-					dir, strerror (errno));
-                                goto out;
-                        }
-                        break;
-                }
-
-                length = strlen (dirent->d_name);
-
-                strcpy (tmp_real_path, real_path);
-                strcat (tmp_real_path, "/");
-                strcat (tmp_real_path, dirent->d_name);
-                ret = posix_lstat_with_gen (this, tmp_real_path, &buf);
-
-                if (ret == -1)
-                        continue;
-
-                if (IA_ISDIR (buf.ia_type)) {
-                        for (i = 0; i < length; i++)
-                                dir_checksum[i] ^= dirent->d_name[i];
-                } else {
-                        for (i = 0; i < length; i++)
-                                file_checksum[i] ^= dirent->d_name[i];
-                }
-        }
-        closedir (dir);
-
-        op_ret = 0;
-
- out:
-        STACK_UNWIND_STRICT (checksum, frame, op_ret, op_errno,
-                             file_checksum, dir_checksum);
-
-        return 0;
-}
-
 int32_t
 posix_priv (xlator_t *this)
 {
@@ -4629,7 +4556,6 @@ struct xlator_fops fops = {
 	.finodelk    = posix_finodelk,
 	.entrylk     = posix_entrylk,
 	.fentrylk    = posix_fentrylk,
-        .checksum    = posix_checksum,
         .rchecksum   = posix_rchecksum,
 	.xattrop     = posix_xattrop,
 	.fxattrop    = posix_fxattrop,