X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ftarget%2Ftgt_main.c;h=1d2a933eb4fb8e90ba20bf0db89118a6e940a8da;hb=e02e613f411d4273c9c1c99ee88121e641ddb4c2;hp=d7b6500eafb21f6796128eb07ff93390d1ca9b1f;hpb=77e44127bb39f5d1dc1f4e61274e5df7bf707603;p=fs%2Flustre-release.git

diff --git a/lustre/target/tgt_main.c b/lustre/target/tgt_main.c
index d7b6500..1d2a933 100644
--- a/lustre/target/tgt_main.c
+++ b/lustre/target/tgt_main.c
@@ -21,7 +21,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2012, 2013, Intel Corporation.
  */
 /*
  * lustre/target/tgt_main.c
@@ -34,17 +34,18 @@
 #define DEBUG_SUBSYSTEM S_CLASS
 
 #include <obd.h>
-
 #include "tgt_internal.h"
 
 int tgt_init(const struct lu_env *env, struct lu_target *lut,
-	     struct obd_device *obd, struct dt_device *dt)
+	     struct obd_device *obd, struct dt_device *dt,
+	     struct tgt_opc_slice *slice, int request_fail_id,
+	     int reply_fail_id)
 {
-	struct dt_object_format	dof;
-	struct lu_attr		attr;
-	struct lu_fid		fid;
-	struct dt_object       *o;
-	int			rc = 0;
+	struct dt_object_format	 dof;
+	struct lu_attr		 attr;
+	struct lu_fid		 fid;
+	struct dt_object	*o;
+	int			 rc = 0;
 
 	ENTRY;
 
@@ -53,10 +54,29 @@ int tgt_init(const struct lu_env *env, struct lu_target *lut,
 	lut->lut_obd = obd;
 	lut->lut_bottom = dt;
 	lut->lut_last_rcvd = NULL;
+	lut->lut_client_bitmap = NULL;
 	obd->u.obt.obt_lut = lut;
 	obd->u.obt.obt_magic = OBT_MAGIC;
 
-	cfs_spin_lock_init(&lut->lut_translock);
+	/* set request handler slice and parameters */
+	lut->lut_slice = slice;
+	lut->lut_reply_fail_id = reply_fail_id;
+	lut->lut_request_fail_id = request_fail_id;
+
+	/* sptlrcp variables init */
+	rwlock_init(&lut->lut_sptlrpc_lock);
+	sptlrpc_rule_set_init(&lut->lut_sptlrpc_rset);
+	lut->lut_mds_capa = 1;
+	lut->lut_oss_capa = 1;
+
+	spin_lock_init(&lut->lut_flags_lock);
+	lut->lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
+
+	/* last_rcvd initialization is needed by replayable targets only */
+	if (!obd->obd_replayable)
+		RETURN(0);
+
+	spin_lock_init(&lut->lut_translock);
 
 	OBD_ALLOC(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
 	if (lut->lut_client_bitmap == NULL)
@@ -67,19 +87,39 @@ int tgt_init(const struct lu_env *env, struct lu_target *lut,
 	attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
 	dof.dof_type = dt_mode_to_dft(S_IFREG);
 
-	lu_local_obj_fid(&fid, MDT_LAST_RECV_OID);
+	lu_local_obj_fid(&fid, LAST_RECV_OID);
 
 	o = dt_find_or_create(env, lut->lut_bottom, &fid, &dof, &attr);
-	if (!IS_ERR(o)) {
-		lut->lut_last_rcvd = o;
-	} else {
-		OBD_FREE(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
-		lut->lut_client_bitmap = NULL;
+	if (IS_ERR(o)) {
 		rc = PTR_ERR(o);
-		CERROR("cannot open %s: rc = %d\n", LAST_RCVD, rc);
+		CERROR("%s: cannot open LAST_RCVD: rc = %d\n", tgt_name(lut),
+		       rc);
+		GOTO(out_bitmap, rc);
 	}
 
-	RETURN(rc);
+	lut->lut_last_rcvd = o;
+	rc = tgt_server_data_init(env, lut);
+	if (rc < 0)
+		GOTO(out_obj, rc);
+
+	/* prepare transactions callbacks */
+	lut->lut_txn_cb.dtc_txn_start = tgt_txn_start_cb;
+	lut->lut_txn_cb.dtc_txn_stop = tgt_txn_stop_cb;
+	lut->lut_txn_cb.dtc_txn_commit = NULL;
+	lut->lut_txn_cb.dtc_cookie = lut;
+	lut->lut_txn_cb.dtc_tag = LCT_DT_THREAD | LCT_MD_THREAD;
+	CFS_INIT_LIST_HEAD(&lut->lut_txn_cb.dtc_linkage);
+
+	dt_txn_callback_add(lut->lut_bottom, &lut->lut_txn_cb);
+
+	RETURN(0);
+out_obj:
+	lu_object_put(env, &lut->lut_last_rcvd->do_lu);
+	lut->lut_last_rcvd = NULL;
+out_bitmap:
+	OBD_FREE(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
+	lut->lut_client_bitmap = NULL;
+	return rc;
 }
 EXPORT_SYMBOL(tgt_init);
 
@@ -87,11 +127,14 @@ void tgt_fini(const struct lu_env *env, struct lu_target *lut)
 {
 	ENTRY;
 
+	sptlrpc_rule_set_free(&lut->lut_sptlrpc_rset);
+
 	if (lut->lut_client_bitmap) {
 		OBD_FREE(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
 		lut->lut_client_bitmap = NULL;
 	}
 	if (lut->lut_last_rcvd) {
+		dt_txn_callback_del(lut->lut_bottom, &lut->lut_txn_cb);
 		lu_object_put(env, &lut->lut_last_rcvd->do_lu);
 		lut->lut_last_rcvd = NULL;
 	}
@@ -101,22 +144,69 @@ EXPORT_SYMBOL(tgt_fini);
 
 /* context key constructor/destructor: tg_key_init, tg_key_fini */
 LU_KEY_INIT_FINI(tgt, struct tgt_thread_info);
+static void tgt_key_exit(const struct lu_context *ctx,
+			 struct lu_context_key *key, void *data)
+{
+	struct tgt_thread_info *tti = data;
+
+	tti->tti_has_trans = 0;
+	tti->tti_mult_trans = 0;
+}
 
 /* context key: tg_thread_key */
-LU_CONTEXT_KEY_DEFINE(tgt, LCT_MD_THREAD | LCT_DT_THREAD);
+struct lu_context_key tgt_thread_key = {
+	.lct_tags = LCT_MD_THREAD | LCT_DT_THREAD,
+	.lct_init = tgt_key_init,
+	.lct_fini = tgt_key_fini,
+	.lct_exit = tgt_key_exit,
+};
 EXPORT_SYMBOL(tgt_thread_key);
 
-LU_KEY_INIT_GENERIC(tg);
+LU_KEY_INIT_GENERIC(tgt);
+
+/* context key constructor/destructor: tgt_ses_key_init, tgt_ses_key_fini */
+LU_KEY_INIT_FINI(tgt_ses, struct tgt_session_info);
+
+/* context key: tgt_session_key */
+struct lu_context_key tgt_session_key = {
+	.lct_tags = LCT_SERVER_SESSION,
+	.lct_init = tgt_ses_key_init,
+	.lct_fini = tgt_ses_key_fini,
+};
+EXPORT_SYMBOL(tgt_session_key);
+
+LU_KEY_INIT_GENERIC(tgt_ses);
+
+/*
+ * this page is allocated statically when module is initializing
+ * it is used to simulate data corruptions, see ost_checksum_bulk()
+ * for details. as the original pages provided by the layers below
+ * can be remain in the internal cache, we do not want to modify
+ * them.
+ */
+struct page *tgt_page_to_corrupt;
 
 int tgt_mod_init(void)
 {
-	tg_key_init_generic(&tgt_thread_key, NULL);
+	ENTRY;
+
+	tgt_page_to_corrupt = alloc_page(GFP_IOFS);
+
+	tgt_key_init_generic(&tgt_thread_key, NULL);
 	lu_context_key_register_many(&tgt_thread_key, NULL);
-	return 0;
+
+	tgt_ses_key_init_generic(&tgt_session_key, NULL);
+	lu_context_key_register_many(&tgt_session_key, NULL);
+
+	RETURN(0);
 }
 
 void tgt_mod_exit(void)
 {
+	if (tgt_page_to_corrupt != NULL)
+		page_cache_release(tgt_page_to_corrupt);
+
 	lu_context_key_degister(&tgt_thread_key);
+	lu_context_key_degister(&tgt_session_key);
 }