X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ffid%2Ffid_request.c;h=6facae1f111a73a85b7be62bda4c8cf4c8242dcb;hb=6e6357dbf9a14aaea459f460dbe4f93e52c814d4;hp=26692dc2e8d13ad3d154a5df75846c1c5bd272d9;hpb=d016a086b68ca4af2dcbfefc3917b9291efd8d62;p=fs%2Flustre-release.git

diff --git a/lustre/fid/fid_request.c b/lustre/fid/fid_request.c
index 26692dc..6facae1 100644
--- a/lustre/fid/fid_request.c
+++ b/lustre/fid/fid_request.c
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -29,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,9 +40,6 @@
  * Author: Yury Umanets <umka@clusterfs.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_FID
 
 #ifdef __KERNEL__
@@ -69,79 +64,87 @@ static int seq_client_rpc(struct lu_client_seq *seq,
                           struct lu_seq_range *output, __u32 opc,
                           const char *opcname)
 {
-        struct obd_export     *exp = seq->lcs_exp;
-        struct ptlrpc_request *req;
-        struct lu_seq_range   *out, *in;
-        __u32                 *op;
-        int                    rc;
-        ENTRY;
-
-        req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY,
-                                        LUSTRE_MDS_VERSION, SEQ_QUERY);
-        if (req == NULL)
-                RETURN(-ENOMEM);
-
-        /* Init operation code */
-        op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC);
-        *op = opc;
-
-        /* Zero out input range, this is not recovery yet. */
-        in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE);
-        range_init(in);
-
-        ptlrpc_request_set_replen(req);
-
-       if (seq->lcs_type == LUSTRE_SEQ_METADATA) {
-                req->rq_request_portal = SEQ_METADATA_PORTAL;
-                in->lsr_flags = LU_SEQ_RANGE_MDT;
-        } else {
-                LASSERTF(seq->lcs_type == LUSTRE_SEQ_DATA,
-                         "unknown lcs_type %u\n", seq->lcs_type);
-                req->rq_request_portal = SEQ_DATA_PORTAL;
-                in->lsr_flags = LU_SEQ_RANGE_OST;
-        }
-
-        if (opc == SEQ_ALLOC_SUPER) {
-                /* Update index field of *in, it is required for
-                 * FLD update on super sequence allocator node. */
-                in->lsr_index = seq->lcs_space.lsr_index;
-                req->rq_request_portal = SEQ_CONTROLLER_PORTAL;
-        } else {
-                LASSERTF(opc == SEQ_ALLOC_META,
-                         "unknown opcode %u\n, opc", opc);
-        }
-
-        ptlrpc_at_set_req_timeout(req);
-
-        mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
-        rc = ptlrpc_queue_wait(req);
-        mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
-
-        if (rc)
-                GOTO(out_req, rc);
-
-        out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE);
-        *output = *out;
-
-        if (!range_is_sane(output)) {
-                CERROR("%s: Invalid range received from server: "
-                       DRANGE"\n", seq->lcs_name, PRANGE(output));
-                GOTO(out_req, rc = -EINVAL);
-        }
-
-        if (range_is_exhausted(output)) {
-                CERROR("%s: Range received from server is exhausted: "
-                       DRANGE"]\n", seq->lcs_name, PRANGE(output));
-                GOTO(out_req, rc = -EINVAL);
-        }
-
-        CDEBUG(D_INFO, "%s: Allocated %s-sequence "DRANGE"]\n",
-               seq->lcs_name, opcname, PRANGE(output));
-
-        EXIT;
+	struct obd_export     *exp = seq->lcs_exp;
+	struct ptlrpc_request *req;
+	struct lu_seq_range   *out, *in;
+	__u32                 *op;
+	unsigned int           debug_mask;
+	int                    rc;
+	ENTRY;
+
+	req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY,
+					LUSTRE_MDS_VERSION, SEQ_QUERY);
+	if (req == NULL)
+		RETURN(-ENOMEM);
+
+	/* Init operation code */
+	op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC);
+	*op = opc;
+
+	/* Zero out input range, this is not recovery yet. */
+	in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE);
+	range_init(in);
+
+	ptlrpc_request_set_replen(req);
+
+	in->lsr_index = seq->lcs_space.lsr_index;
+	if (seq->lcs_type == LUSTRE_SEQ_METADATA)
+		in->lsr_flags = LU_SEQ_RANGE_MDT;
+	else
+		in->lsr_flags = LU_SEQ_RANGE_OST;
+
+	if (opc == SEQ_ALLOC_SUPER) {
+		req->rq_request_portal = SEQ_CONTROLLER_PORTAL;
+		req->rq_reply_portal = MDC_REPLY_PORTAL;
+		/* During allocating super sequence for data object,
+		 * the current thread might hold the export of MDT0(MDT0
+		 * precreating objects on this OST), and it will send the
+		 * request to MDT0 here, so we can not keep resending the
+		 * request here, otherwise if MDT0 is failed(umounted),
+		 * it can not release the export of MDT0 */
+		if (seq->lcs_type == LUSTRE_SEQ_DATA)
+			req->rq_no_delay = req->rq_no_resend = 1;
+		debug_mask = D_CONSOLE;
+	} else {
+		if (seq->lcs_type == LUSTRE_SEQ_METADATA)
+			req->rq_request_portal = SEQ_METADATA_PORTAL;
+		else
+			req->rq_request_portal = SEQ_DATA_PORTAL;
+		debug_mask = D_INFO;
+	}
+
+	ptlrpc_at_set_req_timeout(req);
+
+	if (seq->lcs_type == LUSTRE_SEQ_METADATA)
+		mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
+	rc = ptlrpc_queue_wait(req);
+	if (seq->lcs_type == LUSTRE_SEQ_METADATA)
+		mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
+	if (rc)
+		GOTO(out_req, rc);
+
+	out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE);
+	*output = *out;
+
+	if (!range_is_sane(output)) {
+		CERROR("%s: Invalid range received from server: "
+		       DRANGE"\n", seq->lcs_name, PRANGE(output));
+		GOTO(out_req, rc = -EINVAL);
+	}
+
+	if (range_is_exhausted(output)) {
+		CERROR("%s: Range received from server is exhausted: "
+		       DRANGE"]\n", seq->lcs_name, PRANGE(output));
+		GOTO(out_req, rc = -EINVAL);
+	}
+
+	CDEBUG_LIMIT(debug_mask, "%s: Allocated %s-sequence "DRANGE"]\n",
+		     seq->lcs_name, opcname, PRANGE(output));
+
+	EXIT;
 out_req:
-        ptlrpc_req_finished(req);
-        return rc;
+	ptlrpc_req_finished(req);
+	return rc;
 }
 
 /* Request sequence-controller node to allocate new super-sequence. */
@@ -151,7 +154,7 @@ int seq_client_alloc_super(struct lu_client_seq *seq,
         int rc;
         ENTRY;
 
-        cfs_mutex_lock(&seq->lcs_mutex);
+	mutex_lock(&seq->lcs_mutex);
 
 #ifdef __KERNEL__
         if (seq->lcs_srv) {
@@ -160,12 +163,19 @@ int seq_client_alloc_super(struct lu_client_seq *seq,
                                             env);
         } else {
 #endif
-                rc = seq_client_rpc(seq, &seq->lcs_space,
+		/* Check whether the connection to seq controller has been
+		 * setup (lcs_exp != NULL) */
+		if (seq->lcs_exp == NULL) {
+			mutex_unlock(&seq->lcs_mutex);
+			RETURN(-EINPROGRESS);
+		}
+
+		rc = seq_client_rpc(seq, &seq->lcs_space,
                                     SEQ_ALLOC_SUPER, "super");
 #ifdef __KERNEL__
         }
 #endif
-        cfs_mutex_unlock(&seq->lcs_mutex);
+	mutex_unlock(&seq->lcs_mutex);
         RETURN(rc);
 }
 
@@ -182,8 +192,14 @@ static int seq_client_alloc_meta(const struct lu_env *env,
                 rc = seq_server_alloc_meta(seq->lcs_srv, &seq->lcs_space, env);
         } else {
 #endif
-                rc = seq_client_rpc(seq, &seq->lcs_space,
-                                    SEQ_ALLOC_META, "meta");
+		do {
+			/* If meta server return -EINPROGRESS or EAGAIN,
+			 * it means meta server might not be ready to
+			 * allocate super sequence from sequence controller
+			 * (MDT0)yet */
+			rc = seq_client_rpc(seq, &seq->lcs_space,
+					    SEQ_ALLOC_META, "meta");
+		} while (rc == -EINPROGRESS || rc == -EAGAIN);
 #ifdef __KERNEL__
         }
 #endif
@@ -229,29 +245,31 @@ static int seq_fid_alloc_prep(struct lu_client_seq *seq,
         if (seq->lcs_update) {
                 cfs_waitq_add(&seq->lcs_waitq, link);
                 cfs_set_current_state(CFS_TASK_UNINT);
-                cfs_mutex_unlock(&seq->lcs_mutex);
+		mutex_unlock(&seq->lcs_mutex);
 
                 cfs_waitq_wait(link, CFS_TASK_UNINT);
 
-                cfs_mutex_lock(&seq->lcs_mutex);
+		mutex_lock(&seq->lcs_mutex);
                 cfs_waitq_del(&seq->lcs_waitq, link);
                 cfs_set_current_state(CFS_TASK_RUNNING);
                 return -EAGAIN;
         }
         ++seq->lcs_update;
-        cfs_mutex_unlock(&seq->lcs_mutex);
+	mutex_unlock(&seq->lcs_mutex);
         return 0;
 }
 
 static void seq_fid_alloc_fini(struct lu_client_seq *seq)
 {
         LASSERT(seq->lcs_update == 1);
-        cfs_mutex_lock(&seq->lcs_mutex);
+	mutex_lock(&seq->lcs_mutex);
         --seq->lcs_update;
         cfs_waitq_signal(&seq->lcs_waitq);
 }
 
-/* Allocate the whole seq to the caller*/
+/**
+ * Allocate the whole seq to the caller.
+ **/
 int seq_client_get_seq(const struct lu_env *env,
                        struct lu_client_seq *seq, seqno_t *seqnr)
 {
@@ -259,7 +277,7 @@ int seq_client_get_seq(const struct lu_env *env,
         int rc;
 
         LASSERT(seqnr != NULL);
-        cfs_mutex_lock(&seq->lcs_mutex);
+	mutex_lock(&seq->lcs_mutex);
         cfs_waitlink_init(&link);
 
         while (1) {
@@ -273,25 +291,28 @@ int seq_client_get_seq(const struct lu_env *env,
                 CERROR("%s: Can't allocate new sequence, "
                        "rc %d\n", seq->lcs_name, rc);
                 seq_fid_alloc_fini(seq);
-                cfs_mutex_unlock(&seq->lcs_mutex);
+		mutex_unlock(&seq->lcs_mutex);
                 return rc;
         }
 
         CDEBUG(D_INFO, "%s: allocate sequence "
                "[0x%16.16"LPF64"x]\n", seq->lcs_name, *seqnr);
 
-        /*Since the caller require the whole seq,
-         *so marked this seq to be used*/
-        seq->lcs_fid.f_oid = LUSTRE_SEQ_MAX_WIDTH;
-        seq->lcs_fid.f_seq = *seqnr;
-        seq->lcs_fid.f_ver = 0;
+	/* Since the caller require the whole seq,
+	 * so marked this seq to be used */
+	if (seq->lcs_type == LUSTRE_SEQ_METADATA)
+		seq->lcs_fid.f_oid = LUSTRE_METADATA_SEQ_MAX_WIDTH;
+	else
+		seq->lcs_fid.f_oid = LUSTRE_DATA_SEQ_MAX_WIDTH;
 
+	seq->lcs_fid.f_seq = *seqnr;
+	seq->lcs_fid.f_ver = 0;
         /*
          * Inform caller that sequence switch is performed to allow it
          * to setup FLD for it.
          */
         seq_fid_alloc_fini(seq);
-        cfs_mutex_unlock(&seq->lcs_mutex);
+	mutex_unlock(&seq->lcs_mutex);
 
         return rc;
 }
@@ -309,7 +330,10 @@ int seq_client_alloc_fid(const struct lu_env *env,
         LASSERT(fid != NULL);
 
         cfs_waitlink_init(&link);
-        cfs_mutex_lock(&seq->lcs_mutex);
+	mutex_lock(&seq->lcs_mutex);
+
+	if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_EXHAUST))
+		seq->lcs_fid.f_oid = seq->lcs_width;
 
         while (1) {
                 seqno_t seqnr;
@@ -331,7 +355,7 @@ int seq_client_alloc_fid(const struct lu_env *env,
                         CERROR("%s: Can't allocate new sequence, "
                                "rc %d\n", seq->lcs_name, rc);
                         seq_fid_alloc_fini(seq);
-                        cfs_mutex_unlock(&seq->lcs_mutex);
+			mutex_unlock(&seq->lcs_mutex);
                         RETURN(rc);
                 }
 
@@ -353,7 +377,7 @@ int seq_client_alloc_fid(const struct lu_env *env,
         }
 
         *fid = seq->lcs_fid;
-        cfs_mutex_unlock(&seq->lcs_mutex);
+	mutex_unlock(&seq->lcs_mutex);
 
         CDEBUG(D_INFO, "%s: Allocated FID "DFID"\n", seq->lcs_name,  PFID(fid));
         RETURN(rc);
@@ -370,16 +394,16 @@ void seq_client_flush(struct lu_client_seq *seq)
 
         LASSERT(seq != NULL);
         cfs_waitlink_init(&link);
-        cfs_mutex_lock(&seq->lcs_mutex);
+	mutex_lock(&seq->lcs_mutex);
 
         while (seq->lcs_update) {
                 cfs_waitq_add(&seq->lcs_waitq, &link);
                 cfs_set_current_state(CFS_TASK_UNINT);
-                cfs_mutex_unlock(&seq->lcs_mutex);
+		mutex_unlock(&seq->lcs_mutex);
 
                 cfs_waitq_wait(&link, CFS_TASK_UNINT);
 
-                cfs_mutex_lock(&seq->lcs_mutex);
+		mutex_lock(&seq->lcs_mutex);
                 cfs_waitq_del(&seq->lcs_waitq, &link);
                 cfs_set_current_state(CFS_TASK_RUNNING);
         }
@@ -393,7 +417,7 @@ void seq_client_flush(struct lu_client_seq *seq)
         seq->lcs_space.lsr_index = -1;
 
         range_init(&seq->lcs_space);
-        cfs_mutex_unlock(&seq->lcs_mutex);
+	mutex_unlock(&seq->lcs_mutex);
 }
 EXPORT_SYMBOL(seq_client_flush);
 
@@ -459,36 +483,37 @@ int seq_client_init(struct lu_client_seq *seq,
                     const char *prefix,
                     struct lu_server_seq *srv)
 {
-        int rc;
-        ENTRY;
+	int rc;
+	ENTRY;
 
-        LASSERT(seq != NULL);
-        LASSERT(prefix != NULL);
+	LASSERT(seq != NULL);
+	LASSERT(prefix != NULL);
 
-        seq->lcs_exp = exp;
-        seq->lcs_srv = srv;
-        seq->lcs_type = type;
-        cfs_mutex_init(&seq->lcs_mutex);
-        seq->lcs_width = LUSTRE_SEQ_MAX_WIDTH;
-        cfs_waitq_init(&seq->lcs_waitq);
+	seq->lcs_srv = srv;
+	seq->lcs_type = type;
 
-        /* Make sure that things are clear before work is started. */
-        seq_client_flush(seq);
+	mutex_init(&seq->lcs_mutex);
+	if (type == LUSTRE_SEQ_METADATA)
+		seq->lcs_width = LUSTRE_METADATA_SEQ_MAX_WIDTH;
+	else
+		seq->lcs_width = LUSTRE_DATA_SEQ_MAX_WIDTH;
 
-        if (exp == NULL) {
-                LASSERT(seq->lcs_srv != NULL);
-        } else {
-                LASSERT(seq->lcs_exp != NULL);
-                seq->lcs_exp = class_export_get(seq->lcs_exp);
-        }
+	cfs_waitq_init(&seq->lcs_waitq);
+	/* Make sure that things are clear before work is started. */
+	seq_client_flush(seq);
 
-        snprintf(seq->lcs_name, sizeof(seq->lcs_name),
-                 "cli-%s", prefix);
+	if (exp != NULL)
+		seq->lcs_exp = class_export_get(exp);
+	else if (type == LUSTRE_SEQ_METADATA)
+		LASSERT(seq->lcs_srv != NULL);
 
-        rc = seq_client_proc_init(seq);
-        if (rc)
-                seq_client_fini(seq);
-        RETURN(rc);
+	snprintf(seq->lcs_name, sizeof(seq->lcs_name),
+		 "cli-%s", prefix);
+
+	rc = seq_client_proc_init(seq);
+	if (rc)
+		seq_client_fini(seq);
+	RETURN(rc);
 }
 EXPORT_SYMBOL(seq_client_init);