/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_RPC
#include <liblustre.h>
#endif
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_ha.h>
-#include <linux/lustre_import.h>
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lustre_lib.h>
+#include <lustre_ha.h>
+#include <lustre_import.h>
+#include <lustre_req_layout.h>
#include "ptlrpc_internal.h"
cl->cli_name = name;
}
-struct obd_uuid *ptlrpc_req_to_uuid(struct ptlrpc_request *req)
-{
- return &req->rq_connection->c_remote_uuid;
-}
-
struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid)
{
struct ptlrpc_connection *c;
- struct ptlrpc_peer peer;
- int err;
+ lnet_nid_t self;
+ lnet_process_id_t peer;
+ int err;
- err = ptlrpc_uuid_to_peer(uuid, &peer);
+ err = ptlrpc_uuid_to_peer(uuid, &peer, &self);
if (err != 0) {
CERROR("cannot find peer %s!\n", uuid->uuid);
return NULL;
}
- c = ptlrpc_get_connection(&peer, uuid);
+ c = ptlrpc_connection_get(peer, self, uuid);
if (c) {
memcpy(c->c_remote_uuid.uuid,
uuid->uuid, sizeof(c->c_remote_uuid.uuid));
- c->c_epoch++;
}
CDEBUG(D_INFO, "%s -> %p\n", uuid->uuid, c);
return c;
}
-void ptlrpc_readdress_connection(struct ptlrpc_connection *conn,
- struct obd_uuid *uuid)
-{
- struct ptlrpc_peer peer;
- int err;
-
- err = ptlrpc_uuid_to_peer(uuid, &peer);
- if (err != 0) {
- CERROR("cannot find peer %s!\n", uuid->uuid);
- return;
- }
-
- memcpy(&conn->c_peer, &peer, sizeof (peer));
- return;
-}
-
-static inline struct ptlrpc_bulk_desc *new_bulk(void)
+static inline struct ptlrpc_bulk_desc *new_bulk(int npages, int type, int portal)
{
struct ptlrpc_bulk_desc *desc;
- OBD_ALLOC(desc, sizeof(*desc));
+ OBD_ALLOC(desc, offsetof (struct ptlrpc_bulk_desc, bd_iov[npages]));
if (!desc)
return NULL;
spin_lock_init(&desc->bd_lock);
- init_waitqueue_head(&desc->bd_waitq);
- INIT_LIST_HEAD(&desc->bd_page_list);
- desc->bd_md_h = PTL_HANDLE_NONE;
- desc->bd_me_h = PTL_HANDLE_NONE;
+ cfs_waitq_init(&desc->bd_waitq);
+ desc->bd_max_iov = npages;
+ desc->bd_iov_count = 0;
+ LNetInvalidateHandle(&desc->bd_md_h);
+ desc->bd_portal = portal;
+ desc->bd_type = type;
return desc;
}
struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
- int type, int portal)
+ int npages, int type, int portal)
{
struct obd_import *imp = req->rq_import;
struct ptlrpc_bulk_desc *desc;
+ ENTRY;
LASSERT(type == BULK_PUT_SINK || type == BULK_GET_SOURCE);
-
- desc = new_bulk();
+ desc = new_bulk(npages, type, portal);
if (desc == NULL)
RETURN(NULL);
desc->bd_import_generation = req->rq_import_generation;
desc->bd_import = class_import_get(imp);
desc->bd_req = req;
- desc->bd_type = type;
- desc->bd_portal = portal;
+
+ desc->bd_cbid.cbid_fn = client_bulk_callback;
+ desc->bd_cbid.cbid_arg = desc;
/* This makes req own desc, and free it when she frees herself */
req->rq_bulk = desc;
return desc;
}
-struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp (struct ptlrpc_request *req,
- int type, int portal)
+struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
+ int npages, int type, int portal)
{
struct obd_export *exp = req->rq_export;
struct ptlrpc_bulk_desc *desc;
+ ENTRY;
LASSERT(type == BULK_PUT_SOURCE || type == BULK_GET_SINK);
- desc = new_bulk();
+ desc = new_bulk(npages, type, portal);
if (desc == NULL)
RETURN(NULL);
desc->bd_export = class_export_get(exp);
desc->bd_req = req;
- desc->bd_type = type;
- desc->bd_portal = portal;
+
+ desc->bd_cbid.cbid_fn = server_bulk_callback;
+ desc->bd_cbid.cbid_arg = desc;
/* NB we don't assign rq_bulk here; server-side requests are
* re-used, and the handler frees the bulk desc explicitly. */
return desc;
}
-int ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
- struct page *page, int pageoffset, int len)
+void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
+ cfs_page_t *page, int pageoffset, int len)
{
- struct ptlrpc_bulk_page *bulk;
-
- OBD_ALLOC(bulk, sizeof(*bulk));
- if (bulk == NULL)
- return -ENOMEM;
-
+ LASSERT(desc->bd_iov_count < desc->bd_max_iov);
LASSERT(page != NULL);
LASSERT(pageoffset >= 0);
LASSERT(len > 0);
- LASSERT(pageoffset + len <= PAGE_SIZE);
+ LASSERT(pageoffset + len <= CFS_PAGE_SIZE);
- bulk->bp_page = page;
- bulk->bp_pageoffset = pageoffset;
- bulk->bp_buflen = len;
+ desc->bd_nob += len;
- bulk->bp_desc = desc;
- list_add_tail(&bulk->bp_link, &desc->bd_page_list);
- desc->bd_page_count++;
- return 0;
+ ptlrpc_add_bulk_page(desc, page, pageoffset, len);
}
void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *desc)
{
- struct list_head *tmp, *next;
ENTRY;
LASSERT(desc != NULL);
- LASSERT(desc->bd_page_count != 0x5a5a5a5a); /* not freed already */
+ LASSERT(desc->bd_iov_count != LI_POISON); /* not freed already */
LASSERT(!desc->bd_network_rw); /* network hands off or */
-
- list_for_each_safe(tmp, next, &desc->bd_page_list) {
- struct ptlrpc_bulk_page *bulk;
- bulk = list_entry(tmp, struct ptlrpc_bulk_page, bp_link);
- ptlrpc_free_bulk_page(bulk);
- }
-
- LASSERT(desc->bd_page_count == 0);
LASSERT((desc->bd_export != NULL) ^ (desc->bd_import != NULL));
+ sptlrpc_enc_pool_put_pages(desc);
+
if (desc->bd_export)
class_export_put(desc->bd_export);
else
class_import_put(desc->bd_import);
- OBD_FREE(desc, sizeof(*desc));
+ OBD_FREE(desc, offsetof(struct ptlrpc_bulk_desc,
+ bd_iov[desc->bd_max_iov]));
EXIT;
}
-void ptlrpc_free_bulk_page(struct ptlrpc_bulk_page *bulk)
+/* Set server timelimit for this req */
+void ptlrpc_at_set_req_timeout(struct ptlrpc_request *req)
{
- LASSERT(bulk != NULL);
+ __u32 serv_est;
+ int idx;
+ struct imp_at *at;
+
+ LASSERT(req->rq_import);
+
+ if (AT_OFF) {
+ /* non-AT settings */
+ req->rq_timeout = req->rq_import->imp_server_timeout ?
+ obd_timeout / 2 : obd_timeout;
+ lustre_msg_set_timeout(req->rq_reqmsg, req->rq_timeout);
+ return;
+ }
- list_del(&bulk->bp_link);
- bulk->bp_desc->bd_page_count--;
- OBD_FREE(bulk, sizeof(*bulk));
+ at = &req->rq_import->imp_at;
+ idx = import_at_get_index(req->rq_import,
+ req->rq_request_portal);
+ serv_est = at_get(&at->iat_service_estimate[idx]);
+ /* add an arbitrary minimum: 125% +5 sec */
+ req->rq_timeout = serv_est + (serv_est >> 2) + 5;
+ /* We could get even fancier here, using history to predict increased
+ loading... */
+
+ /* Let the server know what this RPC timeout is by putting it in the
+ reqmsg*/
+ lustre_msg_set_timeout(req->rq_reqmsg, req->rq_timeout);
}
-struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, int opcode,
- int count, int *lengths, char **bufs)
+/* Adjust max service estimate based on server value */
+static void ptlrpc_at_adj_service(struct ptlrpc_request *req,
+ unsigned int serv_est)
+{
+ int idx;
+ unsigned int oldse;
+ struct imp_at *at;
+
+ LASSERT(req->rq_import);
+ at = &req->rq_import->imp_at;
+
+ idx = import_at_get_index(req->rq_import, req->rq_request_portal);
+ /* max service estimates are tracked on the server side,
+ so just keep minimal history here */
+ oldse = at_add(&at->iat_service_estimate[idx], serv_est);
+ if (oldse != 0)
+ CDEBUG(D_ADAPTTO, "The RPC service estimate for %s ptl %d "
+ "has changed from %d to %d\n",
+ req->rq_import->imp_obd->obd_name,req->rq_request_portal,
+ oldse, at_get(&at->iat_service_estimate[idx]));
+}
+
+/* Expected network latency per remote node (secs) */
+int ptlrpc_at_get_net_latency(struct ptlrpc_request *req)
+{
+ return AT_OFF ? 0 : at_get(&req->rq_import->imp_at.iat_net_latency);
+}
+
+/* Adjust expected network latency */
+static void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
+ unsigned int service_time)
+{
+ unsigned int nl, oldnl;
+ struct imp_at *at;
+ time_t now = cfs_time_current_sec();
+
+ LASSERT(req->rq_import);
+ at = &req->rq_import->imp_at;
+
+ /* Network latency is total time less server processing time */
+ nl = max_t(int, now - req->rq_sent - service_time, 0) +1/*st rounding*/;
+ if (service_time > now - req->rq_sent + 3 /* bz16408 */)
+ CWARN("Reported service time %u > total measured time "
+ CFS_DURATION_T"\n", service_time,
+ cfs_time_sub(now, req->rq_sent));
+
+ oldnl = at_add(&at->iat_net_latency, nl);
+ if (oldnl != 0)
+ CDEBUG(D_ADAPTTO, "The network latency for %s (nid %s) "
+ "has changed from %d to %d\n",
+ req->rq_import->imp_obd->obd_name,
+ obd_uuid2str(
+ &req->rq_import->imp_connection->c_remote_uuid),
+ oldnl, at_get(&at->iat_net_latency));
+}
+
+static int unpack_reply(struct ptlrpc_request *req)
{
- struct ptlrpc_request *request;
int rc;
+
+ /* Clear reply swab mask; we may have already swabbed an early reply */
+ req->rq_rep_swab_mask = 0;
+
+ rc = lustre_unpack_msg(req->rq_repmsg, req->rq_replen);
+ if (rc) {
+ DEBUG_REQ(D_ERROR, req, "unpack_rep failed: %d", rc);
+ return(-EPROTO);
+ }
+
+ rc = lustre_unpack_rep_ptlrpc_body(req, MSG_PTLRPC_BODY_OFF);
+ if (rc) {
+ DEBUG_REQ(D_ERROR, req, "unpack ptlrpc body failed: %d", rc);
+ return(-EPROTO);
+ }
+ return 0;
+}
+
+/*
+ * Handle an early reply message, called with the rq_lock held.
+ * If anything goes wrong just ignore it - same as if it never happened
+ */
+static int ptlrpc_at_recv_early_reply(struct ptlrpc_request *req)
+{
+ struct ptlrpc_request *early_req;
+ time_t olddl;
+ int rc;
ENTRY;
- LASSERT((unsigned long)imp > 0x1000);
+ req->rq_early = 0;
+ spin_unlock(&req->rq_lock);
- OBD_ALLOC(request, sizeof(*request));
- if (!request) {
- CERROR("request allocation out of memory\n");
- RETURN(NULL);
+ rc = sptlrpc_cli_unwrap_early_reply(req, &early_req);
+ if (rc) {
+ spin_lock(&req->rq_lock);
+ RETURN(rc);
+ }
+
+ rc = unpack_reply(early_req);
+ if (rc == 0) {
+ /* Expecting to increase the service time estimate here */
+ ptlrpc_at_adj_service(req,
+ lustre_msg_get_timeout(early_req->rq_repmsg));
+ ptlrpc_at_adj_net_latency(req,
+ lustre_msg_get_service_time(early_req->rq_repmsg));
+ }
+
+ sptlrpc_cli_finish_early_reply(early_req);
+
+ spin_lock(&req->rq_lock);
+
+ if (rc == 0) {
+ /* Adjust the local timeout for this req */
+ ptlrpc_at_set_req_timeout(req);
+
+ olddl = req->rq_deadline;
+ /* server assumes it now has rq_timeout from when it sent the
+ early reply, so client should give it at least that long. */
+ req->rq_deadline = cfs_time_current_sec() + req->rq_timeout +
+ ptlrpc_at_get_net_latency(req);
+
+ DEBUG_REQ(D_ADAPTTO, req,
+ "Early reply #%d, new deadline in "CFS_DURATION_T"s "
+ "("CFS_DURATION_T"s)", req->rq_early_count,
+ cfs_time_sub(req->rq_deadline,
+ cfs_time_current_sec()),
+ cfs_time_sub(req->rq_deadline, olddl));
+ }
+
+ RETURN(rc);
+}
+
+void ptlrpc_free_rq_pool(struct ptlrpc_request_pool *pool)
+{
+ struct list_head *l, *tmp;
+ struct ptlrpc_request *req;
+
+ if (!pool)
+ return;
+
+ list_for_each_safe(l, tmp, &pool->prp_req_list) {
+ req = list_entry(l, struct ptlrpc_request, rq_list);
+ list_del(&req->rq_list);
+ LASSERT(req->rq_reqbuf);
+ LASSERT(req->rq_reqbuf_len == pool->prp_rq_size);
+ OBD_FREE(req->rq_reqbuf, pool->prp_rq_size);
+ OBD_FREE(req, sizeof(*req));
+ }
+ OBD_FREE(pool, sizeof(*pool));
+}
+
+void ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq)
+{
+ int i;
+ int size = 1;
+
+ while (size < pool->prp_rq_size + SPTLRPC_MAX_PAYLOAD)
+ size <<= 1;
+
+ LASSERTF(list_empty(&pool->prp_req_list) || size == pool->prp_rq_size,
+ "Trying to change pool size with nonempty pool "
+ "from %d to %d bytes\n", pool->prp_rq_size, size);
+
+ spin_lock(&pool->prp_lock);
+ pool->prp_rq_size = size;
+ for (i = 0; i < num_rq; i++) {
+ struct ptlrpc_request *req;
+ struct lustre_msg *msg;
+
+ spin_unlock(&pool->prp_lock);
+ OBD_ALLOC(req, sizeof(struct ptlrpc_request));
+ if (!req)
+ return;
+ OBD_ALLOC_GFP(msg, size, CFS_ALLOC_STD);
+ if (!msg) {
+ OBD_FREE(req, sizeof(struct ptlrpc_request));
+ return;
+ }
+ req->rq_reqbuf = msg;
+ req->rq_reqbuf_len = size;
+ req->rq_pool = pool;
+ spin_lock(&pool->prp_lock);
+ list_add_tail(&req->rq_list, &pool->prp_req_list);
+ }
+ spin_unlock(&pool->prp_lock);
+ return;
+}
+
+struct ptlrpc_request_pool *ptlrpc_init_rq_pool(int num_rq, int msgsize,
+ void (*populate_pool)(struct ptlrpc_request_pool *, int))
+{
+ struct ptlrpc_request_pool *pool;
+
+ OBD_ALLOC(pool, sizeof (struct ptlrpc_request_pool));
+ if (!pool)
+ return NULL;
+
+ /* Request next power of two for the allocation, because internally
+ kernel would do exactly this */
+
+ spin_lock_init(&pool->prp_lock);
+ CFS_INIT_LIST_HEAD(&pool->prp_req_list);
+ pool->prp_rq_size = msgsize;
+ pool->prp_populate = populate_pool;
+
+ populate_pool(pool, num_rq);
+
+ if (list_empty(&pool->prp_req_list)) {
+ /* have not allocated a single request for the pool */
+ OBD_FREE(pool, sizeof (struct ptlrpc_request_pool));
+ pool = NULL;
}
+ return pool;
+}
- rc = lustre_pack_msg(count, lengths, bufs,
- &request->rq_reqlen, &request->rq_reqmsg);
+static struct ptlrpc_request *ptlrpc_prep_req_from_pool(struct ptlrpc_request_pool *pool)
+{
+ struct ptlrpc_request *request;
+ struct lustre_msg *reqbuf;
+
+ if (!pool)
+ return NULL;
+
+ spin_lock(&pool->prp_lock);
+
+ /* See if we have anything in a pool, and bail out if nothing,
+ * in writeout path, where this matters, this is safe to do, because
+ * nothing is lost in this case, and when some in-flight requests
+ * complete, this code will be called again. */
+ if (unlikely(list_empty(&pool->prp_req_list))) {
+ spin_unlock(&pool->prp_lock);
+ return NULL;
+ }
+
+ request = list_entry(pool->prp_req_list.next, struct ptlrpc_request,
+ rq_list);
+ list_del(&request->rq_list);
+ spin_unlock(&pool->prp_lock);
+
+ LASSERT(request->rq_reqbuf);
+ LASSERT(request->rq_pool);
+
+ reqbuf = request->rq_reqbuf;
+ memset(request, 0, sizeof(*request));
+ request->rq_reqbuf = reqbuf;
+ request->rq_reqbuf_len = pool->prp_rq_size;
+ request->rq_pool = pool;
+
+ return request;
+}
+
+static void __ptlrpc_free_req_to_pool(struct ptlrpc_request *request)
+{
+ struct ptlrpc_request_pool *pool = request->rq_pool;
+
+ spin_lock(&pool->prp_lock);
+ LASSERT(list_empty(&request->rq_list));
+ list_add_tail(&request->rq_list, &pool->prp_req_list);
+ spin_unlock(&pool->prp_lock);
+}
+
+static int __ptlrpc_request_bufs_pack(struct ptlrpc_request *request,
+ __u32 version, int opcode,
+ int count, __u32 *lengths, char **bufs,
+ struct ptlrpc_cli_ctx *ctx)
+{
+ struct obd_import *imp = request->rq_import;
+ int rc;
+ ENTRY;
+
+ if (unlikely(ctx))
+ request->rq_cli_ctx = sptlrpc_cli_ctx_get(ctx);
+ else {
+ rc = sptlrpc_req_get_ctx(request);
+ if (rc)
+ GOTO(out_free, rc);
+ }
+
+ sptlrpc_req_set_flavor(request, opcode);
+
+ rc = lustre_pack_request(request, imp->imp_msg_magic, count,
+ lengths, bufs);
if (rc) {
- CERROR("cannot pack request %d\n", rc);
- OBD_FREE(request, sizeof(*request));
- RETURN(NULL);
+ LASSERT(!request->rq_pool);
+ GOTO(out_ctx, rc);
}
- request->rq_timeout = obd_timeout;
- request->rq_level = LUSTRE_CONN_FULL;
+ lustre_msg_add_version(request->rq_reqmsg, version);
+ request->rq_send_state = LUSTRE_IMP_FULL;
request->rq_type = PTL_RPC_MSG_REQUEST;
- request->rq_import = class_import_get(imp);
+ request->rq_export = NULL;
+
+ request->rq_req_cbid.cbid_fn = request_out_callback;
+ request->rq_req_cbid.cbid_arg = request;
+
+ request->rq_reply_cbid.cbid_fn = reply_in_callback;
+ request->rq_reply_cbid.cbid_arg = request;
+
request->rq_phase = RQ_PHASE_NEW;
- /* XXX FIXME bug 249 */
request->rq_request_portal = imp->imp_client->cli_request_portal;
request->rq_reply_portal = imp->imp_client->cli_reply_portal;
- request->rq_connection = ptlrpc_connection_addref(imp->imp_connection);
+ ptlrpc_at_set_req_timeout(request);
spin_lock_init(&request->rq_lock);
- INIT_LIST_HEAD(&request->rq_list);
- init_waitqueue_head(&request->rq_wait_for_rep);
+ CFS_INIT_LIST_HEAD(&request->rq_list);
+ CFS_INIT_LIST_HEAD(&request->rq_timed_list);
+ CFS_INIT_LIST_HEAD(&request->rq_replay_list);
+ CFS_INIT_LIST_HEAD(&request->rq_mod_list);
+ CFS_INIT_LIST_HEAD(&request->rq_ctx_chain);
+ CFS_INIT_LIST_HEAD(&request->rq_set_chain);
+ CFS_INIT_LIST_HEAD(&request->rq_history_list);
+ cfs_waitq_init(&request->rq_reply_waitq);
request->rq_xid = ptlrpc_next_xid();
atomic_set(&request->rq_refcount, 1);
- request->rq_reqmsg->opc = opcode;
- request->rq_reqmsg->flags = 0;
+ lustre_msg_set_opc(request->rq_reqmsg, opcode);
+
+ RETURN(0);
+out_ctx:
+ sptlrpc_cli_ctx_put(request->rq_cli_ctx, 1);
+out_free:
+ class_import_put(imp);
+ return rc;
+}
+
+int ptlrpc_request_bufs_pack(struct ptlrpc_request *request,
+ __u32 version, int opcode, char **bufs,
+ struct ptlrpc_cli_ctx *ctx)
+{
+ int count;
+
+ count = req_capsule_filled_sizes(&request->rq_pill, RCL_CLIENT);
+ return __ptlrpc_request_bufs_pack(request, version, opcode, count,
+ request->rq_pill.rc_area[RCL_CLIENT],
+ bufs, ctx);
+}
+EXPORT_SYMBOL(ptlrpc_request_bufs_pack);
+
+int ptlrpc_request_pack(struct ptlrpc_request *request,
+ __u32 version, int opcode)
+{
+ return ptlrpc_request_bufs_pack(request, version, opcode, NULL, NULL);
+}
+
+static inline
+struct ptlrpc_request *__ptlrpc_request_alloc(struct obd_import *imp,
+ struct ptlrpc_request_pool *pool)
+{
+ struct ptlrpc_request *request = NULL;
+
+ if (pool)
+ request = ptlrpc_prep_req_from_pool(pool);
+
+ if (!request)
+ OBD_ALLOC_PTR(request);
+
+ if (request) {
+ LASSERTF((unsigned long)imp > 0x1000, "%p", imp);
+ LASSERT(imp != LP_POISON);
+ LASSERTF((unsigned long)imp->imp_client > 0x1000, "%p",
+ imp->imp_client);
+ LASSERT(imp->imp_client != LP_POISON);
+
+ request->rq_import = class_import_get(imp);
+ } else {
+ CERROR("request allocation out of memory\n");
+ }
+
+ return request;
+}
+
+static struct ptlrpc_request *
+ptlrpc_request_alloc_internal(struct obd_import *imp,
+ struct ptlrpc_request_pool * pool,
+ const struct req_format *format)
+{
+ struct ptlrpc_request *request;
+
+ request = __ptlrpc_request_alloc(imp, pool);
+ if (request == NULL)
+ return NULL;
+
+ req_capsule_init(&request->rq_pill, request, RCL_CLIENT);
+ req_capsule_set(&request->rq_pill, format);
+ return request;
+}
+
+struct ptlrpc_request *ptlrpc_request_alloc(struct obd_import *imp,
+ const struct req_format *format)
+{
+ return ptlrpc_request_alloc_internal(imp, NULL, format);
+}
+
+struct ptlrpc_request *ptlrpc_request_alloc_pool(struct obd_import *imp,
+ struct ptlrpc_request_pool * pool,
+ const struct req_format *format)
+{
+ return ptlrpc_request_alloc_internal(imp, pool, format);
+}
+
+void ptlrpc_request_free(struct ptlrpc_request *request)
+{
+ if (request->rq_pool)
+ __ptlrpc_free_req_to_pool(request);
+ else
+ OBD_FREE_PTR(request);
+}
+
+struct ptlrpc_request *ptlrpc_request_alloc_pack(struct obd_import *imp,
+ const struct req_format *format,
+ __u32 version, int opcode)
+{
+ struct ptlrpc_request *req = ptlrpc_request_alloc(imp, format);
+ int rc;
+
+ if (req) {
+ rc = ptlrpc_request_pack(req, version, opcode);
+ if (rc) {
+ ptlrpc_request_free(req);
+ req = NULL;
+ }
+ }
+ return req;
+}
+
+struct ptlrpc_request *
+ptlrpc_prep_req_pool(struct obd_import *imp,
+ __u32 version, int opcode,
+ int count, __u32 *lengths, char **bufs,
+ struct ptlrpc_request_pool *pool)
+{
+ struct ptlrpc_request *request;
+ int rc;
+
+ request = __ptlrpc_request_alloc(imp, pool);
+ if (!request)
+ return NULL;
- RETURN(request);
+ rc = __ptlrpc_request_bufs_pack(request, version, opcode, count,
+ lengths, bufs, NULL);
+ if (rc) {
+ ptlrpc_request_free(request);
+ request = NULL;
+ }
+ return request;
+}
+
+struct ptlrpc_request *
+ptlrpc_prep_req(struct obd_import *imp, __u32 version, int opcode, int count,
+ __u32 *lengths, char **bufs)
+{
+ return ptlrpc_prep_req_pool(imp, version, opcode, count, lengths, bufs,
+ NULL);
}
struct ptlrpc_request_set *ptlrpc_prep_set(void)
{
struct ptlrpc_request_set *set;
+ ENTRY;
OBD_ALLOC(set, sizeof *set);
if (!set)
RETURN(NULL);
- INIT_LIST_HEAD(&set->set_requests);
- init_waitqueue_head(&set->set_waitq);
+ CFS_INIT_LIST_HEAD(&set->set_requests);
+ cfs_waitq_init(&set->set_waitq);
set->set_remaining = 0;
+ spin_lock_init(&set->set_new_req_lock);
+ CFS_INIT_LIST_HEAD(&set->set_new_requests);
+ CFS_INIT_LIST_HEAD(&set->set_cblist);
RETURN(set);
}
if (req->rq_phase == RQ_PHASE_NEW) {
if (req->rq_interpret_reply != NULL) {
- int (*interpreter)(struct ptlrpc_request *,
- void *, int) =
+ ptlrpc_interpterer_t interpreter =
req->rq_interpret_reply;
/* higher level (i.e. LOV) failed;
* let the sub reqs clean up */
req->rq_status = -EBADR;
- interpreter(req, &req->rq_async_args,
+ interpreter(NULL, req, &req->rq_async_args,
req->rq_status);
}
set->set_remaining--;
EXIT;
}
+int ptlrpc_set_add_cb(struct ptlrpc_request_set *set,
+ set_interpreter_func fn, void *data)
+{
+ struct ptlrpc_set_cbdata *cbdata;
+
+ OBD_ALLOC_PTR(cbdata);
+ if (cbdata == NULL)
+ RETURN(-ENOMEM);
+
+ cbdata->psc_interpret = fn;
+ cbdata->psc_data = data;
+ list_add_tail(&cbdata->psc_item, &set->set_cblist);
+
+ RETURN(0);
+}
+
void ptlrpc_set_add_req(struct ptlrpc_request_set *set,
struct ptlrpc_request *req)
{
list_add_tail(&req->rq_set_chain, &set->set_requests);
req->rq_set = set;
set->set_remaining++;
+
+ atomic_inc(&req->rq_import->imp_inflight);
+}
+
+/**
+ * Lock so many callers can add things, the context that owns the set
+ * is supposed to notice these and move them into the set proper.
+ */
+int ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
+ struct ptlrpc_request *req)
+{
+ struct ptlrpc_request_set *set = pc->pc_set;
+
+ /*
+ * Let caller know that we stopped and will not handle this request.
+ * It needs to take care itself of request.
+ */
+ if (test_bit(LIOD_STOP, &pc->pc_flags))
+ return -EALREADY;
+
+ spin_lock(&set->set_new_req_lock);
+ /*
+ * The set takes over the caller's request reference.
+ */
+ list_add_tail(&req->rq_set_chain, &set->set_new_requests);
+ req->rq_set = set;
+ spin_unlock(&set->set_new_req_lock);
+
+ /*
+ * Let thead know that we added something and better it to wake up
+ * and process.
+ */
+ cfs_waitq_signal(&set->set_waitq);
+ return 0;
+}
+
+/*
+ * Based on the current state of the import, determine if the request
+ * can be sent, is an error, or should be delayed.
+ *
+ * Returns true if this request should be delayed. If false, and
+ * *status is set, then the request can not be sent and *status is the
+ * error code. If false and status is 0, then request can be sent.
+ *
+ * The imp->imp_lock must be held.
+ */
+static int ptlrpc_import_delay_req(struct obd_import *imp,
+ struct ptlrpc_request *req, int *status)
+{
+ int delay = 0;
+ ENTRY;
+
+ LASSERT (status != NULL);
+ *status = 0;
+
+ if (req->rq_ctx_init || req->rq_ctx_fini) {
+ /* always allow ctx init/fini rpc go through */
+ } else if (imp->imp_state == LUSTRE_IMP_NEW) {
+ DEBUG_REQ(D_ERROR, req, "Uninitialized import.");
+ *status = -EIO;
+ LBUG();
+ } else if (imp->imp_state == LUSTRE_IMP_CLOSED) {
+ DEBUG_REQ(D_ERROR, req, "IMP_CLOSED ");
+ *status = -EIO;
+ } else if (req->rq_send_state == LUSTRE_IMP_CONNECTING &&
+ imp->imp_state == LUSTRE_IMP_CONNECTING) {
+ /* allow CONNECT even if import is invalid */ ;
+ if (atomic_read(&imp->imp_inval_count) != 0) {
+ DEBUG_REQ(D_ERROR, req, "invalidate in flight");
+ *status = -EIO;
+ }
+ } else if ((imp->imp_invalid && (!imp->imp_recon_bk)) ||
+ imp->imp_obd->obd_no_recov) {
+ /* If the import has been invalidated (such as by an OST
+ * failure), and if the import(MGC) tried all of its connection
+ * list (Bug 13464), the request must fail with -ESHUTDOWN.
+ * This indicates the requests should be discarded; an -EIO
+ * may result in a resend of the request. */
+ if (!imp->imp_deactive)
+ DEBUG_REQ(D_ERROR, req, "IMP_INVALID");
+ *status = -ESHUTDOWN; /* bz 12940 */
+ } else if (req->rq_import_generation != imp->imp_generation) {
+ DEBUG_REQ(D_ERROR, req, "req wrong generation:");
+ *status = -EIO;
+ } else if (req->rq_send_state != imp->imp_state) {
+ /* invalidate in progress - any requests should be drop */
+ if (atomic_read(&imp->imp_inval_count) != 0) {
+ DEBUG_REQ(D_ERROR, req, "invalidate in flight");
+ *status = -EIO;
+ } else if (imp->imp_dlm_fake || req->rq_no_delay) {
+ *status = -EWOULDBLOCK;
+ } else {
+ delay = 1;
+ }
+ }
+
+ RETURN(delay);
}
static int ptlrpc_check_reply(struct ptlrpc_request *req)
{
- unsigned long flags;
int rc = 0;
ENTRY;
/* serialise with network callback */
- spin_lock_irqsave (&req->rq_lock, flags);
+ spin_lock(&req->rq_lock);
- if (req->rq_replied) {
- DEBUG_REQ(D_NET, req, "REPLIED:");
+ if (req->rq_replied)
GOTO(out, rc = 1);
+
+ if (req->rq_net_err && !req->rq_timedout) {
+ spin_unlock(&req->rq_lock);
+ rc = ptlrpc_expire_one_request(req);
+ spin_lock(&req->rq_lock);
+ GOTO(out, rc);
}
- if (req->rq_err) {
- DEBUG_REQ(D_ERROR, req, "ABORTED:");
+ if (req->rq_err)
GOTO(out, rc = 1);
- }
- if (req->rq_resend) {
- DEBUG_REQ(D_ERROR, req, "RESEND:");
+ if (req->rq_resend)
GOTO(out, rc = 1);
- }
- if (req->rq_restart) {
- DEBUG_REQ(D_ERROR, req, "RESTART:");
+ if (req->rq_restart)
GOTO(out, rc = 1);
+
+ if (req->rq_early) {
+ ptlrpc_at_recv_early_reply(req);
+ GOTO(out, rc = 0); /* keep waiting */
}
+
EXIT;
out:
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ spin_unlock(&req->rq_lock);
DEBUG_REQ(D_NET, req, "rc = %d for", rc);
return rc;
}
int err;
ENTRY;
- err = req->rq_repmsg->status;
- if (req->rq_repmsg->type == PTL_RPC_MSG_ERR) {
- DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR (%d)", err);
- if (err >= 0)
- CERROR("Error Reply has >= zero status\n");
+ err = lustre_msg_get_status(req->rq_repmsg);
+ if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
+ struct obd_import *imp = req->rq_import;
+ __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
+ LCONSOLE_ERROR_MSG(0x011,"an error occurred while communicating"
+ " with %s. The %s operation failed with %d\n",
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ ll_opcode2str(opc), err);
RETURN(err < 0 ? err : -EINVAL);
}
RETURN(err);
}
-#warning this needs to change after robert fixes eviction handling
-static int after_reply(struct ptlrpc_request *req, int *restartp)
+/**
+ * Callback function called when client receives RPC reply for \a req.
+ */
+static int after_reply(struct ptlrpc_request *req)
{
- unsigned long flags;
struct obd_import *imp = req->rq_import;
+ struct obd_device *obd = req->rq_import->imp_obd;
int rc;
+ struct timeval work_start;
+ long timediff;
ENTRY;
LASSERT(!req->rq_receiving_reply);
- LASSERT(req->rq_replied);
-
- if (restartp != NULL)
- *restartp = 0;
+ LASSERT(obd);
+ LASSERT(req->rq_nob_received <= req->rq_repbuf_len);
- /* NB Until this point, the whole of the incoming message,
- * including buflens, status etc is in the sender's byte order. */
+ /*
+ * NB Until this point, the whole of the incoming message,
+ * including buflens, status etc is in the sender's byte order.
+ */
-#if SWAB_PARANOIA
- /* Clear reply swab mask; this is a new reply in sender's byte order */
- req->rq_rep_swab_mask = 0;
-#endif
- rc = lustre_unpack_msg(req->rq_repmsg, req->rq_replen);
+ rc = sptlrpc_cli_unwrap_reply(req);
if (rc) {
- CERROR("unpack_rep failed: %d\n", rc);
- RETURN(-EPROTO);
+ DEBUG_REQ(D_ERROR, req, "unwrap reply failed (%d):", rc);
+ RETURN(rc);
}
- if (req->rq_repmsg->type != PTL_RPC_MSG_REPLY &&
- req->rq_repmsg->type != PTL_RPC_MSG_ERR) {
- CERROR("invalid packet type received (type=%u)\n",
- req->rq_repmsg->type);
+ /*
+ * Security layer unwrap might ask resend this request.
+ */
+ if (req->rq_resend)
+ RETURN(0);
+
+ rc = unpack_reply(req);
+ if (rc)
+ RETURN(rc);
+
+ do_gettimeofday(&work_start);
+ timediff = cfs_timeval_sub(&work_start, &req->rq_arrival_time, NULL);
+ if (obd->obd_svc_stats != NULL)
+ lprocfs_counter_add(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR,
+ timediff);
+
+ if (lustre_msg_get_type(req->rq_repmsg) != PTL_RPC_MSG_REPLY &&
+ lustre_msg_get_type(req->rq_repmsg) != PTL_RPC_MSG_ERR) {
+ DEBUG_REQ(D_ERROR, req, "invalid packet received (type=%u)",
+ lustre_msg_get_type(req->rq_repmsg));
RETURN(-EPROTO);
}
- /* Store transno in reqmsg for replay. */
- req->rq_reqmsg->transno = req->rq_transno = req->rq_repmsg->transno;
+ OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_PAUSE_REP, obd_fail_val);
+ ptlrpc_at_adj_service(req, lustre_msg_get_timeout(req->rq_repmsg));
+ ptlrpc_at_adj_net_latency(req,
+ lustre_msg_get_service_time(req->rq_repmsg));
rc = ptlrpc_check_status(req);
+ imp->imp_connect_error = rc;
- /* Either we've been evicted, or the server has failed for
- * some reason. Try to reconnect, and if that fails, punt to the
- * upcall. */
- if (rc == -ENOTCONN) {
- if (req->rq_level < LUSTRE_CONN_FULL || req->rq_no_recov ||
- imp->imp_obd->obd_no_recov || imp->imp_dlm_fake) {
- RETURN(-ENOTCONN);
+ if (rc) {
+ /*
+ * Either we've been evicted, or the server has failed for
+ * some reason. Try to reconnect, and if that fails, punt to
+ * the upcall.
+ */
+ if (ll_rpc_recoverable_error(rc)) {
+ if (req->rq_send_state != LUSTRE_IMP_FULL ||
+ imp->imp_obd->obd_no_recov || imp->imp_dlm_fake) {
+ RETURN(rc);
+ }
+ ptlrpc_request_handle_notconn(req);
+ RETURN(rc);
}
+ } else {
+ /*
+ * Let's look if server sent slv. Do it only for RPC with
+ * rc == 0.
+ */
+ ldlm_cli_update_pool(req);
+ }
- ptlrpc_request_handle_eviction(req);
+ /*
+ * Store transno in reqmsg for replay.
+ */
+ req->rq_transno = lustre_msg_get_transno(req->rq_repmsg);
+ lustre_msg_set_transno(req->rq_reqmsg, req->rq_transno);
- if (req->rq_err)
- RETURN(-EIO);
+ if (req->rq_import->imp_replayable) {
+ spin_lock(&imp->imp_lock);
+ /*
+ * No point in adding already-committed requests to the replay
+ * list, we will just remove them immediately. b=9829
+ */
+ if (req->rq_transno != 0 &&
+ (req->rq_transno >
+ lustre_msg_get_last_committed(req->rq_repmsg) ||
+ req->rq_replay))
+ ptlrpc_retain_replayable_request(req, imp);
+ else if (req->rq_commit_cb != NULL) {
+ spin_unlock(&imp->imp_lock);
+ req->rq_commit_cb(req);
+ spin_lock(&imp->imp_lock);
+ }
- if (req->rq_no_resend)
- RETURN(rc); /* -ENOTCONN */
-
- if (req->rq_resend) {
- if (restartp == NULL)
- LBUG(); /* async resend not supported yet */
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_resend = 0;
- spin_unlock_irqrestore (&req->rq_lock, flags);
- *restartp = 1;
- lustre_msg_add_flags(req->rq_reqmsg, MSG_RESENT);
- DEBUG_REQ(D_HA, req, "resending: ");
- RETURN(0);
+ /*
+ * Replay-enabled imports return commit-status information.
+ */
+ if (lustre_msg_get_last_committed(req->rq_repmsg)) {
+ imp->imp_peer_committed_transno =
+ lustre_msg_get_last_committed(req->rq_repmsg);
}
+ ptlrpc_free_committed(imp);
+ spin_unlock(&imp->imp_lock);
+ }
- CERROR("request should be err or resend: %p\n", req);
- LBUG();
+ RETURN(rc);
+}
+
+static int ptlrpc_send_new_req(struct ptlrpc_request *req)
+{
+ struct obd_import *imp;
+ int rc;
+ ENTRY;
+
+ LASSERT(req->rq_phase == RQ_PHASE_NEW);
+ if (req->rq_sent && (req->rq_sent > cfs_time_current_sec()))
+ RETURN (0);
+
+ req->rq_phase = RQ_PHASE_RPC;
+
+ imp = req->rq_import;
+ spin_lock(&imp->imp_lock);
+
+ req->rq_import_generation = imp->imp_generation;
+
+ if (ptlrpc_import_delay_req(imp, req, &rc)) {
+ spin_lock (&req->rq_lock);
+ req->rq_waiting = 1;
+ spin_unlock (&req->rq_lock);
+
+ DEBUG_REQ(D_HA, req, "req from PID %d waiting for recovery: "
+ "(%s != %s)",
+ lustre_msg_get_status(req->rq_reqmsg) ,
+ ptlrpc_import_state_name(req->rq_send_state),
+ ptlrpc_import_state_name(imp->imp_state));
+ LASSERT(list_empty (&req->rq_list));
+
+ list_add_tail(&req->rq_list, &imp->imp_delayed_list);
+ spin_unlock(&imp->imp_lock);
+ RETURN(0);
}
- if (req->rq_import->imp_replayable) {
- spin_lock_irqsave(&imp->imp_lock, flags);
- if ((req->rq_replay || req->rq_transno != 0) && rc >= 0)
- ptlrpc_retain_replayable_request(req, imp);
+ if (rc != 0) {
+ spin_unlock(&imp->imp_lock);
+ req->rq_status = rc;
+ req->rq_phase = RQ_PHASE_INTERPRET;
+ RETURN(rc);
+ }
- if (req->rq_transno > imp->imp_max_transno)
- imp->imp_max_transno = req->rq_transno;
+ /* XXX this is the same as ptlrpc_queue_wait */
+ LASSERT(list_empty(&req->rq_list));
+ list_add_tail(&req->rq_list, &imp->imp_sending_list);
+ spin_unlock(&imp->imp_lock);
- /* Replay-enabled imports return commit-status information. */
- if (req->rq_repmsg->last_committed)
- imp->imp_peer_committed_transno =
- req->rq_repmsg->last_committed;
- ptlrpc_free_committed(imp);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ lustre_msg_set_status(req->rq_reqmsg, cfs_curproc_pid());
+
+ rc = sptlrpc_req_refresh_ctx(req, -1);
+ if (rc) {
+ if (req->rq_err) {
+ req->rq_status = rc;
+ RETURN(1);
+ } else {
+ req->rq_wait_ctx = 1;
+ RETURN(0);
+ }
}
- RETURN(rc);
+ CDEBUG(D_RPCTRACE, "Sending RPC pname:cluuid:pid:xid:nid:opc"
+ " %s:%s:%d:"LPU64":%s:%d\n", cfs_curproc_comm(),
+ imp->imp_obd->obd_uuid.uuid,
+ lustre_msg_get_status(req->rq_reqmsg), req->rq_xid,
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ lustre_msg_get_opc(req->rq_reqmsg));
+
+ rc = ptl_send_rpc(req, 0);
+ if (rc) {
+ DEBUG_REQ(D_HA, req, "send failed (%d); expect timeout", rc);
+ req->rq_net_err = 1;
+ RETURN(rc);
+ }
+ RETURN(0);
}
-int ptlrpc_check_set(struct ptlrpc_request_set *set)
+/* this sends any unsent RPCs in @set and returns TRUE if all are sent */
+int ptlrpc_check_set(const struct lu_env *env, struct ptlrpc_request_set *set)
{
- unsigned long flags;
struct list_head *tmp;
+ int force_timer_recalc = 0;
ENTRY;
if (set->set_remaining == 0)
struct obd_import *imp = req->rq_import;
int rc = 0;
+ if (req->rq_phase == RQ_PHASE_NEW &&
+ ptlrpc_send_new_req(req)) {
+ force_timer_recalc = 1;
+ }
+ /* delayed send - skip */
+ if (req->rq_phase == RQ_PHASE_NEW && req->rq_sent)
+ continue;
+
if (!(req->rq_phase == RQ_PHASE_RPC ||
req->rq_phase == RQ_PHASE_BULK ||
req->rq_phase == RQ_PHASE_INTERPRET ||
if (req->rq_phase == RQ_PHASE_INTERPRET)
GOTO(interpret, req->rq_status);
+ if (req->rq_net_err && !req->rq_timedout)
+ ptlrpc_expire_one_request(req);
+
if (req->rq_err) {
ptlrpc_unregister_reply(req);
+ req->rq_replied = 0;
if (req->rq_status == 0)
req->rq_status = -EIO;
req->rq_phase = RQ_PHASE_INTERPRET;
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&imp->imp_lock);
GOTO(interpret, req->rq_status);
}
- if (req->rq_intr) {
+ /* ptlrpc_queue_wait->l_wait_event guarantees that rq_intr
+ * will only be set after rq_timedout, but the oig waiting
+ * path sets rq_intr irrespective of whether ptlrpcd has
+ * seen a timeout. our policy is to only interpret
+ * interrupted rpcs after they have timed out */
+ if (req->rq_intr && (req->rq_timedout || req->rq_waiting ||
+ req->rq_wait_ctx)) {
/* NB could be on delayed list */
ptlrpc_unregister_reply(req);
req->rq_status = -EINTR;
req->rq_phase = RQ_PHASE_INTERPRET;
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&imp->imp_lock);
GOTO(interpret, req->rq_status);
}
if (req->rq_phase == RQ_PHASE_RPC) {
- int do_restart = 0;
- if (req->rq_waiting || req->rq_resend) {
- spin_lock_irqsave(&imp->imp_lock, flags);
+ if (req->rq_timedout || req->rq_resend ||
+ req->rq_waiting || req->rq_wait_ctx) {
+ int status;
- if (req->rq_level > imp->imp_level) {
- spin_unlock_irqrestore(&imp->imp_lock,
- flags);
+ ptlrpc_unregister_reply(req);
+
+ spin_lock(&imp->imp_lock);
+
+ if (ptlrpc_import_delay_req(imp, req, &status)){
+ spin_unlock(&imp->imp_lock);
continue;
}
- list_del(&req->rq_list);
- list_add_tail(&req->rq_list,
- &imp->imp_sending_list);
-
- if (req->rq_import_generation <
- imp->imp_generation) {
- req->rq_status = -EIO;
+ list_del_init(&req->rq_list);
+ if (status != 0) {
+ req->rq_status = status;
req->rq_phase = RQ_PHASE_INTERPRET;
- spin_unlock_irqrestore(&imp->imp_lock,
- flags);
+ spin_unlock(&imp->imp_lock);
GOTO(interpret, req->rq_status);
}
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ if (req->rq_no_resend && !req->rq_wait_ctx) {
+ req->rq_status = -ENOTCONN;
+ req->rq_phase = RQ_PHASE_INTERPRET;
+ spin_unlock(&imp->imp_lock);
+ GOTO(interpret, req->rq_status);
+ }
+ list_add_tail(&req->rq_list,
+ &imp->imp_sending_list);
+
+ spin_unlock(&imp->imp_lock);
req->rq_waiting = 0;
- if (req->rq_resend) {
+
+ if (req->rq_timedout||req->rq_resend) {
+ /* This is re-sending anyways,
+ * let's mark req as resend. */
+ req->rq_resend = 1;
lustre_msg_add_flags(req->rq_reqmsg,
MSG_RESENT);
- spin_lock_irqsave(&req->rq_lock, flags);
- req->rq_resend = 0;
- spin_unlock_irqrestore(&req->rq_lock,
- flags);
-
- ptlrpc_unregister_reply(req);
- if (req->rq_bulk)
- ptlrpc_unregister_bulk(req);
+ if (req->rq_bulk) {
+ __u64 old_xid = req->rq_xid;
+
+ ptlrpc_unregister_bulk (req);
+
+ /* ensure previous bulk fails */
+ req->rq_xid = ptlrpc_next_xid();
+ CDEBUG(D_HA, "resend bulk "
+ "old x"LPU64
+ " new x"LPU64"\n",
+ old_xid, req->rq_xid);
+ }
+ }
+ /*
+ * rq_wait_ctx is only touched by ptlrpcd,
+ * so no lock is needed here.
+ */
+ status = sptlrpc_req_refresh_ctx(req, -1);
+ if (status) {
+ if (req->rq_err) {
+ req->rq_status = status;
+ force_timer_recalc = 1;
+ } else {
+ req->rq_wait_ctx = 1;
+ }
+
+ continue;
+ } else {
+ req->rq_wait_ctx = 0;
}
- rc = ptl_send_rpc(req);
+ rc = ptl_send_rpc(req, 0);
if (rc) {
- req->rq_status = rc;
- req->rq_phase = RQ_PHASE_INTERPRET;
- GOTO(interpret, req->rq_status);
+ DEBUG_REQ(D_HA, req, "send failed (%d)",
+ rc);
+ force_timer_recalc = 1;
+ req->rq_net_err = 1;
}
+ /* need to reset the timeout */
+ force_timer_recalc = 1;
+ }
+
+ spin_lock(&req->rq_lock);
+ if (req->rq_early) {
+ ptlrpc_at_recv_early_reply(req);
+ spin_unlock(&req->rq_lock);
+ continue;
}
- /* Ensure the network callback returned */
- spin_lock_irqsave (&req->rq_lock, flags);
+ /* Still waiting for a reply? */
+ if (req->rq_receiving_reply) {
+ spin_unlock(&req->rq_lock);
+ continue;
+ }
+
+ /* Did we actually receive a reply? */
if (!req->rq_replied) {
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ spin_unlock(&req->rq_lock);
continue;
}
- spin_unlock_irqrestore (&req->rq_lock, flags);
- spin_lock_irqsave(&imp->imp_lock, flags);
- list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&req->rq_lock);
- req->rq_status = after_reply(req, &do_restart);
- if (do_restart) {
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_resend = 1; /* ugh */
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ spin_lock(&imp->imp_lock);
+ list_del_init(&req->rq_list);
+ spin_unlock(&imp->imp_lock);
+
+ req->rq_status = after_reply(req);
+ if (req->rq_resend) {
+ /* Add this req to the delayed list so
+ it can be errored if the import is
+ evicted after recovery. */
+ spin_lock(&imp->imp_lock);
+ list_add_tail(&req->rq_list,
+ &imp->imp_delayed_list);
+ spin_unlock(&imp->imp_lock);
continue;
}
}
LASSERT(req->rq_phase == RQ_PHASE_BULK);
- if (!ptlrpc_bulk_complete (req->rq_bulk))
+ if (ptlrpc_bulk_active(req->rq_bulk))
continue;
+ if (!req->rq_bulk->bd_success) {
+ /* The RPC reply arrived OK, but the bulk screwed
+ * up! Dead wierd since the server told us the RPC
+ * was good after getting the REPLY for her GET or
+ * the ACK for her PUT. */
+ DEBUG_REQ(D_ERROR, req, "bulk transfer failed");
+ LBUG();
+ }
+
req->rq_phase = RQ_PHASE_INTERPRET;
interpret:
ptlrpc_unregister_bulk (req);
if (req->rq_interpret_reply != NULL) {
- int (*interpreter)(struct ptlrpc_request *,void *,int) =
+ ptlrpc_interpterer_t interpreter =
req->rq_interpret_reply;
- req->rq_status = interpreter(req, &req->rq_async_args,
+ req->rq_status = interpreter(NULL, req,
+ &req->rq_async_args,
req->rq_status);
}
+ req->rq_phase = RQ_PHASE_COMPLETE;
- CDEBUG(D_RPCTRACE, "Completed RPC pname:cluuid:pid:xid:ni:nid:"
- "opc %s:%s:%d:"LPU64":%s:"LPX64":%d\n", current->comm,
- imp->imp_obd->obd_uuid.uuid, req->rq_reqmsg->status,
- req->rq_xid,
- imp->imp_connection->c_peer.peer_ni->pni_name,
- imp->imp_connection->c_peer.peer_nid,
- req->rq_reqmsg->opc);
+ CDEBUG(D_RPCTRACE, "Completed RPC pname:cluuid:pid:xid:nid:"
+ "opc %s:%s:%d:"LPU64":%s:%d\n", cfs_curproc_comm(),
+ imp->imp_obd->obd_uuid.uuid,
+ lustre_msg_get_status(req->rq_reqmsg), req->rq_xid,
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ lustre_msg_get_opc(req->rq_reqmsg));
- req->rq_phase = RQ_PHASE_COMPLETE;
+ atomic_dec(&imp->imp_inflight);
set->set_remaining--;
+ cfs_waitq_signal(&imp->imp_recovery_waitq);
}
- RETURN(set->set_remaining == 0);
+ /* If we hit an error, we want to recover promptly. */
+ RETURN(set->set_remaining == 0 || force_timer_recalc);
}
+/* Return 1 if we should give up, else 0 */
int ptlrpc_expire_one_request(struct ptlrpc_request *req)
{
- unsigned long flags;
struct obd_import *imp = req->rq_import;
+ int rc = 0;
ENTRY;
- DEBUG_REQ(D_ERROR, req, "timeout");
+ DEBUG_REQ(D_ERROR|D_NETERROR, req,
+ "%s (sent at "CFS_TIME_T", "CFS_DURATION_T"s ago)",
+ req->rq_net_err ? "network error" : "timeout",
+ req->rq_sent, cfs_time_sub(cfs_time_current_sec(),
+ req->rq_sent));
+
+ if (imp) {
+ LCONSOLE_WARN("Request x"LPU64" sent from %s to NID %s "
+ CFS_DURATION_T"s ago has timed out "
+ "(limit "CFS_DURATION_T"s).\n", req->rq_xid,
+ req->rq_import->imp_obd->obd_name,
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ cfs_time_sub(cfs_time_current_sec(), req->rq_sent),
+ cfs_time_sub(req->rq_deadline, req->rq_sent));
+ }
+
+ if (imp != NULL && obd_debug_peer_on_timeout)
+ LNetCtl(IOC_LIBCFS_DEBUG_PEER, &imp->imp_connection->c_peer);
- spin_lock_irqsave (&req->rq_lock, flags);
+ spin_lock(&req->rq_lock);
req->rq_timedout = 1;
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ spin_unlock(&req->rq_lock);
ptlrpc_unregister_reply (req);
+ if (obd_dump_on_timeout)
+ libcfs_debug_dumplog();
+
+ if (req->rq_bulk != NULL)
+ ptlrpc_unregister_bulk (req);
+
if (imp == NULL) {
DEBUG_REQ(D_HA, req, "NULL import: already cleaned up?");
RETURN(1);
RETURN(1);
/* If this request is for recovery or other primordial tasks,
- * don't go back to sleep, and don't start recovery again.. */
- if (req->rq_level < LUSTRE_CONN_FULL || req->rq_no_recov ||
- imp->imp_obd->obd_no_recov)
+ * then error it out here. */
+ if (req->rq_ctx_init || req->rq_ctx_fini ||
+ req->rq_send_state != LUSTRE_IMP_FULL ||
+ imp->imp_obd->obd_no_recov) {
+ DEBUG_REQ(D_RPCTRACE, req, "err -110, sent_state=%s (now=%s)",
+ ptlrpc_import_state_name(req->rq_send_state),
+ ptlrpc_import_state_name(imp->imp_state));
+ spin_lock(&req->rq_lock);
+ req->rq_status = -ETIMEDOUT;
+ req->rq_err = 1;
+ spin_unlock(&req->rq_lock);
RETURN(1);
+ }
+
+ /* if a request can't be resent we can't wait for an answer after
+ the timeout */
+ if (req->rq_no_resend) {
+ DEBUG_REQ(D_RPCTRACE, req, "TIMEOUT-NORESEND:");
+ rc = 1;
+ }
- ptlrpc_fail_import(imp, req->rq_import_generation);
+ ptlrpc_fail_import(imp, lustre_msg_get_conn_cnt(req->rq_reqmsg));
- RETURN(0);
+ RETURN(rc);
}
-static int expired_set(void *data)
+int ptlrpc_expired_set(void *data)
{
struct ptlrpc_request_set *set = data;
struct list_head *tmp;
- time_t now = LTIME_S (CURRENT_TIME);
+ time_t now = cfs_time_current_sec();
ENTRY;
LASSERT(set != NULL);
list_entry(tmp, struct ptlrpc_request, rq_set_chain);
/* request in-flight? */
- if (!((req->rq_phase == RQ_PHASE_RPC && !req->rq_waiting) ||
+ if (!(((req->rq_phase == RQ_PHASE_RPC) && !req->rq_waiting &&
+ !req->rq_resend) ||
(req->rq_phase == RQ_PHASE_BULK)))
continue;
if (req->rq_timedout || /* already dealt with */
- req->rq_sent + req->rq_timeout > now) /* not expired */
+ req->rq_deadline > now) /* not expired */
continue;
/* deal with this guy */
RETURN(1);
}
-static void interrupted_set(void *data)
+void ptlrpc_mark_interrupted(struct ptlrpc_request *req)
+{
+ spin_lock(&req->rq_lock);
+ req->rq_intr = 1;
+ spin_unlock(&req->rq_lock);
+}
+
+void ptlrpc_interrupted_set(void *data)
{
struct ptlrpc_request_set *set = data;
struct list_head *tmp;
- unsigned long flags;
LASSERT(set != NULL);
CERROR("INTERRUPTED SET %p\n", set);
if (req->rq_phase != RQ_PHASE_RPC)
continue;
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_intr = 1;
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ ptlrpc_mark_interrupted(req);
}
}
-int ptlrpc_set_wait(struct ptlrpc_request_set *set)
+/* get the smallest timeout in the set; this does NOT set a timeout. */
+int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set)
{
struct list_head *tmp;
- struct obd_import *imp;
+ time_t now = cfs_time_current_sec();
+ int timeout = 0;
struct ptlrpc_request *req;
- struct l_wait_info lwi;
- unsigned long flags;
- int rc;
- time_t now;
- time_t deadline;
- int timeout;
+ int deadline;
ENTRY;
SIGNAL_MASK_ASSERT(); /* XXX BUG 1511 */
- LASSERT(!list_empty(&set->set_requests));
+
list_for_each(tmp, &set->set_requests) {
req = list_entry(tmp, struct ptlrpc_request, rq_set_chain);
- LASSERT(req->rq_level == LUSTRE_CONN_FULL);
- LASSERT(req->rq_phase == RQ_PHASE_NEW);
- req->rq_phase = RQ_PHASE_RPC;
+ /* request in-flight? */
+ if (!((req->rq_phase == RQ_PHASE_RPC && !req->rq_waiting) ||
+ (req->rq_phase == RQ_PHASE_BULK) ||
+ (req->rq_phase == RQ_PHASE_NEW)))
+ continue;
- imp = req->rq_import;
- spin_lock_irqsave(&imp->imp_lock, flags);
+ if (req->rq_timedout) /* already timed out */
+ continue;
- if (imp->imp_invalid) {
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- req->rq_status = -EIO;
- req->rq_phase = RQ_PHASE_INTERPRET;
+ if (req->rq_wait_ctx) /* waiting for ctx */
continue;
- }
- req->rq_import_generation = imp->imp_generation;
+ if (req->rq_phase == RQ_PHASE_NEW)
+ deadline = req->rq_sent;
+ else
+ deadline = req->rq_sent + req->rq_timeout;
- if (req->rq_level > imp->imp_level) {
- if (req->rq_no_recov || imp->imp_obd->obd_no_recov ||
- imp->imp_dlm_fake) {
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- req->rq_status = -EWOULDBLOCK;
- req->rq_phase = RQ_PHASE_INTERPRET;
- continue;
- }
+ if (deadline <= now) /* actually expired already */
+ timeout = 1; /* ASAP */
+ else if (timeout == 0 || timeout > deadline - now)
+ timeout = deadline - now;
+ }
+ RETURN(timeout);
+}
- spin_lock (&req->rq_lock);
- req->rq_waiting = 1;
- spin_unlock (&req->rq_lock);
- LASSERT(list_empty (&req->rq_list));
- // list_del(&req->rq_list);
- list_add_tail(&req->rq_list, &imp->imp_delayed_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- continue;
- }
+int ptlrpc_set_wait(struct ptlrpc_request_set *set)
+{
+ struct list_head *tmp;
+ struct ptlrpc_request *req;
+ struct l_wait_info lwi;
+ int rc, timeout;
+ ENTRY;
- /* XXX this is the same as ptlrpc_queue_wait */
- LASSERT(list_empty(&req->rq_list));
- list_add_tail(&req->rq_list, &imp->imp_sending_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
-
- req->rq_reqmsg->status = current->pid;
- CDEBUG(D_RPCTRACE, "Sending RPC pname:cluuid:pid:xid:ni:nid:opc"
- " %s:%s:%d:"LPU64":%s:"LPX64":%d\n", current->comm,
- imp->imp_obd->obd_uuid.uuid, req->rq_reqmsg->status,
- req->rq_xid,
- imp->imp_connection->c_peer.peer_ni->pni_name,
- imp->imp_connection->c_peer.peer_nid,
- req->rq_reqmsg->opc);
-
- rc = ptl_send_rpc(req);
- if (rc) {
- req->rq_status = rc;
- req->rq_phase = RQ_PHASE_INTERPRET;
- }
+ if (list_empty(&set->set_requests))
+ RETURN(0);
+
+ list_for_each(tmp, &set->set_requests) {
+ req = list_entry(tmp, struct ptlrpc_request, rq_set_chain);
+ if (req->rq_phase == RQ_PHASE_NEW)
+ (void)ptlrpc_send_new_req(req);
}
do {
- now = LTIME_S (CURRENT_TIME);
- timeout = 0;
- list_for_each (tmp, &set->set_requests) {
- req = list_entry(tmp, struct ptlrpc_request,
- rq_set_chain);
-
- /* request in-flight? */
- if (!((req->rq_phase == RQ_PHASE_RPC &&
- !req->rq_waiting) ||
- (req->rq_phase == RQ_PHASE_BULK)))
- continue;
-
- if (req->rq_timedout) /* already timed out */
- continue;
-
- deadline = req->rq_sent + req->rq_timeout;
- if (deadline <= now) /* actually expired already */
- timeout = 1; /* ASAP */
- else if (timeout == 0 || timeout > deadline - now)
- timeout = deadline - now;
- }
+ timeout = ptlrpc_set_next_timeout(set);
/* wait until all complete, interrupted, or an in-flight
* req times out */
- CDEBUG(D_HA, "set %p going to sleep for %d seconds\n",
+ CDEBUG(D_RPCTRACE, "set %p going to sleep for %d seconds\n",
set, timeout);
- lwi = LWI_TIMEOUT_INTR((timeout ? timeout : 1) * HZ,
- expired_set, interrupted_set, set);
- rc = l_wait_event(set->set_waitq, ptlrpc_check_set(set), &lwi);
+ lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(timeout ? timeout : 1),
+ ptlrpc_expired_set,
+ ptlrpc_interrupted_set, set);
+ rc = l_wait_event(set->set_waitq,
+ ptlrpc_check_set(NULL, set), &lwi);
LASSERT(rc == 0 || rc == -EINTR || rc == -ETIMEDOUT);
* EINTR.
* I don't really care if we go once more round the loop in
* the error cases -eeb. */
- } while (rc != 0);
+ } while (rc != 0 || set->set_remaining != 0);
LASSERT(set->set_remaining == 0);
if (set->set_interpret != NULL) {
int (*interpreter)(struct ptlrpc_request_set *set,void *,int) =
set->set_interpret;
- rc = interpreter (set, &set->set_args, rc);
+ rc = interpreter (set, set->set_arg, rc);
+ } else {
+ struct ptlrpc_set_cbdata *cbdata, *n;
+ int err;
+
+ list_for_each_entry_safe(cbdata, n,
+ &set->set_cblist, psc_item) {
+ list_del_init(&cbdata->psc_item);
+ err = cbdata->psc_interpret(set, cbdata->psc_data, rc);
+ if (err && !rc)
+ rc = err;
+ OBD_FREE_PTR(cbdata);
+ }
}
RETURN(rc);
return;
}
- LASSERT(!request->rq_receiving_reply);
+ LASSERTF(!request->rq_receiving_reply, "req %p\n", request);
+ LASSERTF(request->rq_rqbd == NULL, "req %p\n",request);/* client-side */
+ LASSERTF(list_empty(&request->rq_list), "req %p\n", request);
+ LASSERTF(list_empty(&request->rq_set_chain), "req %p\n", request);
+ LASSERTF(!request->rq_replay, "req %p\n", request);
+ LASSERT(request->rq_cli_ctx);
+
+ req_capsule_fini(&request->rq_pill);
/* We must take it off the imp_replay_list first. Otherwise, we'll set
* request->rq_reqmsg to NULL while osc_close is dereferencing it. */
if (request->rq_import != NULL) {
- unsigned long flags = 0;
if (!locked)
- spin_lock_irqsave(&request->rq_import->imp_lock, flags);
- list_del_init(&request->rq_list);
+ spin_lock(&request->rq_import->imp_lock);
+ list_del_init(&request->rq_mod_list);
+ list_del_init(&request->rq_replay_list);
if (!locked)
- spin_unlock_irqrestore(&request->rq_import->imp_lock,
- flags);
+ spin_unlock(&request->rq_import->imp_lock);
}
+ LASSERTF(list_empty(&request->rq_replay_list), "req %p\n", request);
if (atomic_read(&request->rq_refcount) != 0) {
DEBUG_REQ(D_ERROR, request,
LBUG();
}
- if (request->rq_repmsg != NULL) {
- OBD_FREE(request->rq_repmsg, request->rq_replen);
- request->rq_repmsg = NULL;
- }
- if (request->rq_reqmsg != NULL) {
- OBD_FREE(request->rq_reqmsg, request->rq_reqlen);
- request->rq_reqmsg = NULL;
- }
+ if (request->rq_repbuf != NULL)
+ sptlrpc_cli_free_repbuf(request);
if (request->rq_export != NULL) {
class_export_put(request->rq_export);
request->rq_export = NULL;
if (request->rq_bulk != NULL)
ptlrpc_free_bulk(request->rq_bulk);
- ptlrpc_put_connection(request->rq_connection);
- OBD_FREE(request, sizeof(*request));
+ if (request->rq_reqbuf != NULL || request->rq_clrbuf != NULL)
+ sptlrpc_cli_free_reqbuf(request);
+
+ sptlrpc_req_put_ctx(request, !locked);
+
+ if (request->rq_pool)
+ __ptlrpc_free_req_to_pool(request);
+ else
+ OBD_FREE(request, sizeof(*request));
EXIT;
}
-void ptlrpc_free_req(struct ptlrpc_request *request)
+static int __ptlrpc_req_finished(struct ptlrpc_request *request, int locked);
+void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request)
{
- __ptlrpc_free_req(request, 0);
+ LASSERT_SPIN_LOCKED(&request->rq_import->imp_lock);
+ (void)__ptlrpc_req_finished(request, 1);
}
static int __ptlrpc_req_finished(struct ptlrpc_request *request, int locked)
if (request == NULL)
RETURN(1);
- if (request == (void *)(long)(0x5a5a5a5a5a5a5a5a) ||
- request->rq_obd == (void *)(long)(0x5a5a5a5a5a5a5a5a)) {
+ if (request == LP_POISON ||
+ request->rq_reqmsg == LP_POISON) {
CERROR("dereferencing freed request (bug 575)\n");
LBUG();
RETURN(1);
__ptlrpc_req_finished(request, 0);
}
-static void ptlrpc_cleanup_request_buf(struct ptlrpc_request *request)
+__u64 ptlrpc_req_xid(struct ptlrpc_request *request)
{
- OBD_FREE(request->rq_reqmsg, request->rq_reqlen);
- request->rq_reqmsg = NULL;
- request->rq_reqlen = 0;
+ return request->rq_xid;
}
+EXPORT_SYMBOL(ptlrpc_req_xid);
/* Disengage the client's reply buffer from the network
* NB does _NOT_ unregister any client-side bulk.
*/
void ptlrpc_unregister_reply (struct ptlrpc_request *request)
{
- unsigned long flags;
- int rc;
- ENTRY;
+ int rc;
+ cfs_waitq_t *wq;
+ struct l_wait_info lwi;
LASSERT(!in_interrupt ()); /* might sleep */
-
- spin_lock_irqsave (&request->rq_lock, flags);
- if (!request->rq_receiving_reply) { /* not waiting for a reply */
- spin_unlock_irqrestore (&request->rq_lock, flags);
- EXIT;
- /* NB reply buffer not freed here */
- return;
- }
-
- LASSERT(!request->rq_replied); /* callback hasn't completed */
- spin_unlock_irqrestore (&request->rq_lock, flags);
-
- rc = PtlMDUnlink (request->rq_reply_md_h);
- switch (rc) {
- default:
- LBUG ();
-
- case PTL_OK: /* unlinked before completion */
- LASSERT(request->rq_receiving_reply);
- LASSERT(!request->rq_replied);
- spin_lock_irqsave (&request->rq_lock, flags);
- request->rq_receiving_reply = 0;
- spin_unlock_irqrestore (&request->rq_lock, flags);
- OBD_FREE(request->rq_repmsg, request->rq_replen);
- request->rq_repmsg = NULL;
- EXIT;
+ if (!ptlrpc_client_recv_or_unlink(request))
+ /* Nothing left to do */
return;
- case PTL_MD_INUSE: /* callback in progress */
- for (;;) {
- /* Network access will complete in finite time but
- * the timeout lets us CERROR for visibility */
- struct l_wait_info lwi = LWI_TIMEOUT(10*HZ, NULL, NULL);
-
- rc = l_wait_event (request->rq_wait_for_rep,
- request->rq_replied, &lwi);
- LASSERT(rc == 0 || rc == -ETIMEDOUT);
- if (rc == 0) {
- spin_lock_irqsave (&request->rq_lock, flags);
- /* Ensure the callback has completed scheduling
- * me and taken its hands off the request */
- spin_unlock_irqrestore(&request->rq_lock,flags);
- break;
- }
+ LNetMDUnlink (request->rq_reply_md_h);
- CERROR ("Unexpectedly long timeout: req %p\n", request);
- }
- /* fall through */
+ /* We have to l_wait_event() whatever the result, to give liblustre
+ * a chance to run reply_in_callback(), and to make sure we've
+ * unlinked before returning a req to the pool */
- case PTL_INV_MD: /* callback completed */
- LASSERT(!request->rq_receiving_reply);
- LASSERT(request->rq_replied);
- EXIT;
- return;
+ if (request->rq_set != NULL)
+ wq = &request->rq_set->set_waitq;
+ else
+ wq = &request->rq_reply_waitq;
+
+ for (;;) {
+ /* Network access will complete in finite time but the HUGE
+ * timeout lets us CWARN for visibility of sluggish NALs */
+ lwi = LWI_TIMEOUT(cfs_time_seconds(LONG_UNLINK), NULL, NULL);
+ rc = l_wait_event (*wq, !ptlrpc_client_recv_or_unlink(request),
+ &lwi);
+ if (rc == 0)
+ return;
+
+ LASSERT (rc == -ETIMEDOUT);
+ DEBUG_REQ(D_WARNING, request, "Unexpectedly long timeout "
+ "rvcng=%d unlnk=%d", request->rq_receiving_reply,
+ request->rq_must_unlink);
}
- /* Not Reached */
}
/* caller must hold imp->imp_lock */
LASSERT(imp != NULL);
-#ifdef CONFIG_SMP
- LASSERT(spin_is_locked(&imp->imp_lock));
-#endif
+ LASSERT_SPIN_LOCKED(&imp->imp_lock);
+
+
+ if (imp->imp_peer_committed_transno == imp->imp_last_transno_checked &&
+ imp->imp_generation == imp->imp_last_generation_checked) {
+ CDEBUG(D_RPCTRACE, "%s: skip recheck: last_committed "LPU64"\n",
+ imp->imp_obd->obd_name, imp->imp_peer_committed_transno);
+ EXIT;
+ return;
+ }
- CDEBUG(D_HA, "%s: committing for last_committed "LPU64"\n",
- imp->imp_obd->obd_name, imp->imp_peer_committed_transno);
+ CDEBUG(D_RPCTRACE, "%s: committing for last_committed "LPU64" gen %d\n",
+ imp->imp_obd->obd_name, imp->imp_peer_committed_transno,
+ imp->imp_generation);
+ imp->imp_last_transno_checked = imp->imp_peer_committed_transno;
+ imp->imp_last_generation_checked = imp->imp_generation;
list_for_each_safe(tmp, saved, &imp->imp_replay_list) {
- req = list_entry(tmp, struct ptlrpc_request, rq_list);
+ req = list_entry(tmp, struct ptlrpc_request, rq_replay_list);
/* XXX ok to remove when 1357 resolved - rread 05/29/03 */
LASSERT(req != last_req);
last_req = req;
if (req->rq_import_generation < imp->imp_generation) {
- DEBUG_REQ(D_HA, req, "freeing request with old gen");
+ DEBUG_REQ(D_RPCTRACE, req, "free request with old gen");
GOTO(free_req, 0);
}
if (req->rq_replay) {
- DEBUG_REQ(D_HA, req, "keeping (FL_REPLAY)");
+ DEBUG_REQ(D_RPCTRACE, req, "keeping (FL_REPLAY)");
continue;
}
/* not yet committed */
if (req->rq_transno > imp->imp_peer_committed_transno) {
- DEBUG_REQ(D_HA, req, "stopping search");
+ DEBUG_REQ(D_RPCTRACE, req, "stopping search");
break;
}
- DEBUG_REQ(D_HA, req, "committing (last_committed "LPU64")",
+ DEBUG_REQ(D_RPCTRACE, req, "commit (last_committed "LPU64")",
imp->imp_peer_committed_transno);
free_req:
- list_del_init(&req->rq_list);
+ spin_lock(&req->rq_lock);
+ req->rq_replay = 0;
+ spin_unlock(&req->rq_lock);
+ if (req->rq_commit_cb != NULL)
+ req->rq_commit_cb(req);
+ list_del_init(&req->rq_replay_list);
__ptlrpc_req_finished(req, 1);
}
void ptlrpc_resend_req(struct ptlrpc_request *req)
{
- unsigned long flags;
-
- DEBUG_REQ(D_HA, req, "resending");
- req->rq_reqmsg->handle.cookie = 0;
- ptlrpc_put_connection(req->rq_connection);
- req->rq_connection =
- ptlrpc_connection_addref(req->rq_import->imp_connection);
+ DEBUG_REQ(D_HA, req, "going to resend");
+ lustre_msg_set_handle(req->rq_reqmsg, &(struct lustre_handle){ 0 });
req->rq_status = -EAGAIN;
- spin_lock_irqsave (&req->rq_lock, flags);
+ spin_lock(&req->rq_lock);
req->rq_resend = 1;
+ req->rq_net_err = 0;
req->rq_timedout = 0;
- if (req->rq_set != NULL)
- wake_up (&req->rq_set->set_waitq);
- else
- wake_up(&req->rq_wait_for_rep);
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ if (req->rq_bulk) {
+ __u64 old_xid = req->rq_xid;
+
+ /* ensure previous bulk fails */
+ req->rq_xid = ptlrpc_next_xid();
+ CDEBUG(D_HA, "resend bulk old x"LPU64" new x"LPU64"\n",
+ old_xid, req->rq_xid);
+ }
+ ptlrpc_wake_client_req(req);
+ spin_unlock(&req->rq_lock);
}
/* XXX: this function and rq_status are currently unused */
void ptlrpc_restart_req(struct ptlrpc_request *req)
{
- unsigned long flags;
-
DEBUG_REQ(D_HA, req, "restarting (possibly-)completed request");
req->rq_status = -ERESTARTSYS;
- spin_lock_irqsave (&req->rq_lock, flags);
+ spin_lock(&req->rq_lock);
req->rq_restart = 1;
req->rq_timedout = 0;
- if (req->rq_set != NULL)
- wake_up (&req->rq_set->set_waitq);
- else
- wake_up(&req->rq_wait_for_rep);
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ ptlrpc_wake_client_req(req);
+ spin_unlock(&req->rq_lock);
}
static int expired_request(void *data)
struct ptlrpc_request *req = data;
ENTRY;
+ /* some failure can suspend regular timeouts */
+ if (ptlrpc_check_suspend())
+ RETURN(1);
+
+ /* deadline may have changed with an early reply */
+ if (req->rq_deadline > cfs_time_current_sec())
+ RETURN(1);
+
RETURN(ptlrpc_expire_one_request(req));
}
static void interrupted_request(void *data)
{
- unsigned long flags;
-
struct ptlrpc_request *req = data;
DEBUG_REQ(D_HA, req, "request interrupted");
- spin_lock_irqsave (&req->rq_lock, flags);
+ spin_lock(&req->rq_lock);
req->rq_intr = 1;
- spin_unlock_irqrestore (&req->rq_lock, flags);
+ spin_unlock(&req->rq_lock);
}
struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req)
{
struct list_head *tmp;
-#ifdef CONFIG_SMP
- LASSERT(spin_is_locked(&imp->imp_lock));
-#endif
+ LASSERT_SPIN_LOCKED(&imp->imp_lock);
+
+ /* clear this for new requests that were resent as well
+ as resent replayed requests. */
+ lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
+
+ /* don't re-add requests that have been replayed */
+ if (!list_empty(&req->rq_replay_list))
+ return;
+
+ lustre_msg_add_flags(req->rq_reqmsg, MSG_REPLAY);
LASSERT(imp->imp_replayable);
/* Balanced in ptlrpc_free_committed, usually. */
ptlrpc_request_addref(req);
list_for_each_prev(tmp, &imp->imp_replay_list) {
struct ptlrpc_request *iter =
- list_entry(tmp, struct ptlrpc_request, rq_list);
+ list_entry(tmp, struct ptlrpc_request, rq_replay_list);
/* We may have duplicate transnos if we create and then
* open a file, or for closes retained if to match creating
continue;
}
- list_add(&req->rq_list, &iter->rq_list);
+ list_add(&req->rq_replay_list, &iter->rq_replay_list);
return;
}
- list_add_tail(&req->rq_list, &imp->imp_replay_list);
+ list_add_tail(&req->rq_replay_list, &imp->imp_replay_list);
}
int ptlrpc_queue_wait(struct ptlrpc_request *req)
int brc;
struct l_wait_info lwi;
struct obd_import *imp = req->rq_import;
- struct obd_device *obd = imp->imp_obd;
- unsigned long flags;
- int do_restart = 0;
- int timeout = 0;
+ cfs_duration_t timeout = CFS_TICK;
+ long timeoutl;
ENTRY;
LASSERT(req->rq_set == NULL);
LASSERT(!req->rq_receiving_reply);
+ atomic_inc(&imp->imp_inflight);
/* for distributed debugging */
- req->rq_reqmsg->status = current->pid;
+ lustre_msg_set_status(req->rq_reqmsg, cfs_curproc_pid());
LASSERT(imp->imp_obd != NULL);
- CDEBUG(D_RPCTRACE, "Sending RPC pname:cluuid:pid:xid:ni:nid:opc "
- "%s:%s:%d:"LPU64":%s:"LPX64":%d\n", current->comm,
+ CDEBUG(D_RPCTRACE, "Sending RPC pname:cluuid:pid:xid:nid:opc "
+ "%s:%s:%d:"LPU64":%s:%d\n", cfs_curproc_comm(),
imp->imp_obd->obd_uuid.uuid,
- req->rq_reqmsg->status, req->rq_xid,
- imp->imp_connection->c_peer.peer_ni->pni_name,
- imp->imp_connection->c_peer.peer_nid,
- req->rq_reqmsg->opc);
+ lustre_msg_get_status(req->rq_reqmsg), req->rq_xid,
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ lustre_msg_get_opc(req->rq_reqmsg));
/* Mark phase here for a little debug help */
req->rq_phase = RQ_PHASE_RPC;
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
req->rq_import_generation = imp->imp_generation;
restart:
- /*
- * If the import has been invalidated (such as by an OST failure), the
- * request must fail with -EIO. Recovery requests are allowed to go
- * through, though, so that they have a chance to revalidate the
- * import.
- */
- if (req->rq_import->imp_invalid && req->rq_level == LUSTRE_CONN_FULL) {
- DEBUG_REQ(D_ERROR, req, "IMP_INVALID:");
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- GOTO(out, rc = -EIO);
- }
-
- if (req->rq_import_generation < imp->imp_generation) {
- DEBUG_REQ(D_ERROR, req, "req old gen:");
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- GOTO(out, rc = -EIO);
- }
-
- if (req->rq_level > imp->imp_level) {
+ if (ptlrpc_import_delay_req(imp, req, &rc)) {
list_del(&req->rq_list);
- if (req->rq_no_recov || obd->obd_no_recov ||
- imp->imp_dlm_fake) {
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- GOTO(out, rc = -EWOULDBLOCK);
- }
list_add_tail(&req->rq_list, &imp->imp_delayed_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
-
- DEBUG_REQ(D_HA, req, "\"%s\" waiting for recovery: (%d > %d)",
- current->comm, req->rq_level, imp->imp_level);
- lwi = LWI_INTR(NULL, NULL);
- rc = l_wait_event(req->rq_wait_for_rep,
- (req->rq_level <= imp->imp_level ||
- req->rq_err),
+ spin_unlock(&imp->imp_lock);
+
+ DEBUG_REQ(D_HA, req, "\"%s\" waiting for recovery: (%s != %s)",
+ cfs_curproc_comm(),
+ ptlrpc_import_state_name(req->rq_send_state),
+ ptlrpc_import_state_name(imp->imp_state));
+ lwi = LWI_INTR(interrupted_request, req);
+ rc = l_wait_event(req->rq_reply_waitq,
+ (req->rq_send_state == imp->imp_state ||
+ req->rq_err || req->rq_intr),
&lwi);
- DEBUG_REQ(D_HA, req, "\"%s\" awake: (%d > %d or %d == 1)",
- current->comm, imp->imp_level, req->rq_level,
- req->rq_err);
+ DEBUG_REQ(D_HA, req, "\"%s\" awake: (%s == %s or %d/%d == 1)",
+ cfs_curproc_comm(),
+ ptlrpc_import_state_name(imp->imp_state),
+ ptlrpc_import_state_name(req->rq_send_state),
+ req->rq_err, req->rq_intr);
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
list_del_init(&req->rq_list);
- if (req->rq_err ||
- req->rq_import_generation < imp->imp_generation)
+ if (req->rq_err) {
+ /* rq_status was set locally */
rc = -EIO;
+ }
+ else if (req->rq_intr) {
+ rc = -EINTR;
+ }
+ else if (req->rq_no_resend) {
+ spin_unlock(&imp->imp_lock);
+ GOTO(out, rc = -ETIMEDOUT);
+ }
+ else {
+ GOTO(restart, rc);
+ }
+ }
+ if (rc != 0) {
+ list_del_init(&req->rq_list);
+ spin_unlock(&imp->imp_lock);
+ req->rq_status = rc; // XXX this ok?
+ GOTO(out, rc);
+ }
- if (rc) {
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- GOTO(out, rc);
+ if (req->rq_resend) {
+ lustre_msg_add_flags(req->rq_reqmsg, MSG_RESENT);
+
+ if (req->rq_bulk != NULL) {
+ ptlrpc_unregister_bulk (req);
+
+ /* bulk requests are supposed to be
+ * idempotent, so we are free to bump the xid
+ * here, which we need to do before
+ * registering the bulk again (bug 6371).
+ * print the old xid first for sanity.
+ */
+ DEBUG_REQ(D_HA, req, "bumping xid for bulk: ");
+ req->rq_xid = ptlrpc_next_xid();
}
- DEBUG_REQ(D_HA, req, "resumed");
+ DEBUG_REQ(D_HA, req, "resending: ");
}
/* XXX this is the same as ptlrpc_set_wait */
LASSERT(list_empty(&req->rq_list));
list_add_tail(&req->rq_list, &imp->imp_sending_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&imp->imp_lock);
- rc = ptl_send_rpc(req);
+ rc = sptlrpc_req_refresh_ctx(req, 0);
if (rc) {
- /* The DLM's fake imports want to avoid all forms of
- * recovery. */
- if (imp->imp_dlm_fake) {
- spin_lock_irqsave(&imp->imp_lock, flags);
+ if (req->rq_err) {
+ /* we got fatal ctx refresh error, directly jump out
+ * thus we can pass back the actual error code.
+ */
+ spin_lock(&imp->imp_lock);
list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
- GOTO(out, rc);
- }
-
- DEBUG_REQ(D_ERROR, req, "send failed (%d); recovering", rc);
-
- ptlrpc_fail_import(imp, req->rq_import_generation);
+ spin_unlock(&imp->imp_lock);
- /* If we've been told to not wait, we're done. */
- if (req->rq_level < LUSTRE_CONN_FULL || req->rq_no_recov ||
- obd->obd_no_recov) {
- spin_lock_irqsave(&imp->imp_lock, flags);
- list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ CERROR("Failed to refresh ctx of req %p: %d\n", req, rc);
GOTO(out, rc);
}
-
- /* If we errored, allow the user to interrupt immediately */
- timeout = 1;
- } else {
- timeout = req->rq_timeout * HZ;
- DEBUG_REQ(D_NET, req, "-- sleeping");
- }
-#ifdef __KERNEL__
- lwi = LWI_TIMEOUT_INTR(timeout, expired_request, interrupted_request,
- req);
- l_wait_event(req->rq_wait_for_rep, ptlrpc_check_reply(req), &lwi);
-#else
- {
- extern int reply_in_callback(ptl_event_t *ev);
- ptl_event_t reply_ev;
- PtlEQWait(req->rq_connection->c_peer.peer_ni->pni_reply_in_eq_h,
- &reply_ev);
- reply_in_callback(&reply_ev);
-
- LASSERT(reply_ev.mem_desc.user_ptr == (void *)req);
- // ptlrpc_check_reply(req);
- // not required now it only tests
+ /* simulating we got error during send rpc */
+ goto after_send;
}
-#endif
- DEBUG_REQ(D_NET, req, "-- done sleeping");
+ rc = ptl_send_rpc(req, 0);
+ if (rc)
+ DEBUG_REQ(D_HA, req, "send failed (%d); recovering", rc);
- CDEBUG(D_RPCTRACE, "Completed RPC pname:cluuid:pid:xid:ni:nid:opc "
- "%s:%s:%d:"LPU64":%s:"LPX64":%d\n", current->comm,
+repeat:
+ timeoutl = req->rq_deadline - cfs_time_current_sec();
+ timeout = (timeoutl <= 0 || rc) ? CFS_TICK :
+ cfs_time_seconds(timeoutl);
+ DEBUG_REQ(D_NET, req,
+ "-- sleeping for "CFS_DURATION_T" ticks", timeout);
+ lwi = LWI_TIMEOUT_INTR(timeout, expired_request, interrupted_request,
+ req);
+ brc = l_wait_event(req->rq_reply_waitq, ptlrpc_check_reply(req), &lwi);
+ if (brc == -ETIMEDOUT && ((req->rq_deadline > cfs_time_current_sec()) ||
+ ptlrpc_check_and_wait_suspend(req)))
+ goto repeat;
+
+after_send:
+ CDEBUG(D_RPCTRACE, "Completed RPC pname:cluuid:pid:xid:nid:opc "
+ "%s:%s:%d:"LPU64":%s:%d\n", cfs_curproc_comm(),
imp->imp_obd->obd_uuid.uuid,
- req->rq_reqmsg->status, req->rq_xid,
- imp->imp_connection->c_peer.peer_ni->pni_name,
- imp->imp_connection->c_peer.peer_nid,
- req->rq_reqmsg->opc);
+ lustre_msg_get_status(req->rq_reqmsg), req->rq_xid,
+ libcfs_nid2str(imp->imp_connection->c_peer.nid),
+ lustre_msg_get_opc(req->rq_reqmsg));
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
list_del_init(&req->rq_list);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&imp->imp_lock);
/* If the reply was received normally, this just grabs the spinlock
* (ensuring the reply callback has returned), sees that
* req->rq_receiving_reply is clear and returns. */
ptlrpc_unregister_reply (req);
- if (req->rq_err)
- GOTO(out, rc = -EIO);
-
- /* Resend if we need to, unless we were interrupted. */
- if (req->rq_resend && !req->rq_intr) {
- /* ...unless we were specifically told otherwise. */
- if (req->rq_no_resend) {
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_no_resend = 0;
- spin_unlock_irqrestore (&req->rq_lock, flags);
- GOTO(out, rc = -ETIMEDOUT);
- }
- spin_lock_irqsave (&req->rq_lock, flags);
- req->rq_resend = 0;
- spin_unlock_irqrestore (&req->rq_lock, flags);
- lustre_msg_add_flags(req->rq_reqmsg, MSG_RESENT);
-
- if (req->rq_bulk != NULL)
- ptlrpc_unregister_bulk (req);
- DEBUG_REQ(D_HA, req, "resending: ");
- spin_lock_irqsave(&imp->imp_lock, flags);
- goto restart;
+ if (req->rq_err) {
+ DEBUG_REQ(D_RPCTRACE, req, "err rc=%d status=%d",
+ rc, req->rq_status);
+ GOTO(out, rc = rc ? rc : -EIO);
}
if (req->rq_intr) {
GOTO(out, rc = -EINTR);
}
+ /* Resend if we need to */
+ if (req->rq_resend) {
+ /* ...unless we were specifically told otherwise. */
+ if (req->rq_no_resend)
+ GOTO(out, rc = -ETIMEDOUT);
+ spin_lock(&imp->imp_lock);
+ goto restart;
+ }
+
if (req->rq_timedout) { /* non-recoverable timeout */
GOTO(out, rc = -ETIMEDOUT);
}
GOTO(out, rc = req->rq_status);
}
- rc = after_reply (req, &do_restart);
+ rc = after_reply(req);
/* NB may return +ve success rc */
- if (do_restart) {
- if (req->rq_bulk != NULL)
- ptlrpc_unregister_bulk (req);
- DEBUG_REQ(D_HA, req, "resending: ");
- spin_lock_irqsave(&imp->imp_lock, flags);
+ if (req->rq_resend) {
+ spin_lock(&imp->imp_lock);
goto restart;
}
out:
if (req->rq_bulk != NULL) {
- if (rc >= 0) { /* success so far */
+ if (rc >= 0) {
+ /* success so far. Note that anything going wrong
+ * with bulk now, is EXTREMELY strange, since the
+ * server must have believed that the bulk
+ * tranferred OK before she replied with success to
+ * me. */
lwi = LWI_TIMEOUT(timeout, NULL, NULL);
- brc = l_wait_event(req->rq_wait_for_rep,
- ptlrpc_bulk_complete(req->rq_bulk),
+ brc = l_wait_event(req->rq_reply_waitq,
+ !ptlrpc_bulk_active(req->rq_bulk),
&lwi);
+ LASSERT(brc == 0 || brc == -ETIMEDOUT);
if (brc != 0) {
LASSERT(brc == -ETIMEDOUT);
- CERROR ("Timed out waiting for bulk\n");
+ DEBUG_REQ(D_ERROR, req, "bulk timed out");
rc = brc;
+ } else if (!req->rq_bulk->bd_success) {
+ DEBUG_REQ(D_ERROR, req, "bulk transfer failed");
+ rc = -EIO;
}
}
- if (rc < 0) {
- /* MDS blocks for put ACKs before replying */
- /* OSC sets rq_no_resend for the time being */
- LASSERT(req->rq_no_resend);
+ if (rc < 0)
ptlrpc_unregister_bulk (req);
- }
}
LASSERT(!req->rq_receiving_reply);
req->rq_phase = RQ_PHASE_INTERPRET;
+
+ atomic_dec(&imp->imp_inflight);
+ cfs_waitq_signal(&imp->imp_recovery_waitq);
RETURN(rc);
}
-int ptlrpc_replay_req(struct ptlrpc_request *req)
-{
- int rc = 0, old_level, old_status = 0;
- // struct ptlrpc_client *cli = req->rq_import->imp_client;
- struct l_wait_info lwi;
- ENTRY;
-
- /* I don't touch rq_phase here, so the debug log can show what
- * state it was left in */
-
- /* Not handling automatic bulk replay yet (or ever?) */
- LASSERT(req->rq_bulk == NULL);
-
- DEBUG_REQ(D_NET, req, "about to replay");
-
- /* Update request's state, since we might have a new connection. */
- ptlrpc_put_connection(req->rq_connection);
- req->rq_connection =
- ptlrpc_connection_addref(req->rq_import->imp_connection);
-
- /* temporarily set request to RECOVD level (reset at out:) */
- old_level = req->rq_level;
- if (req->rq_replied)
- old_status = req->rq_repmsg->status;
- req->rq_level = LUSTRE_CONN_RECOVER;
- rc = ptl_send_rpc(req);
- if (rc) {
- CERROR("error %d, opcode %d\n", rc, req->rq_reqmsg->opc);
- ptlrpc_cleanup_request_buf(req);
- // up(&cli->cli_rpc_sem);
- GOTO(out, rc = -rc);
- }
-
- CDEBUG(D_OTHER, "-- sleeping\n");
- lwi = LWI_INTR(NULL, NULL); /* XXX needs timeout, nested recovery */
- l_wait_event(req->rq_wait_for_rep, ptlrpc_check_reply(req), &lwi);
- CDEBUG(D_OTHER, "-- done\n");
+struct ptlrpc_replay_async_args {
+ int praa_old_state;
+ int praa_old_status;
+};
- // up(&cli->cli_rpc_sem);
+static int ptlrpc_replay_interpret(const struct lu_env *env,
+ struct ptlrpc_request *req,
+ void * data, int rc)
+{
+ struct ptlrpc_replay_async_args *aa = data;
+ struct obd_import *imp = req->rq_import;
- /* If the reply was received normally, this just grabs the spinlock
- * (ensuring the reply callback has returned), sees that
- * req->rq_receiving_reply is clear and returns. */
- ptlrpc_unregister_reply (req);
+ ENTRY;
+ atomic_dec(&imp->imp_replay_inflight);
if (!req->rq_replied) {
- CERROR("Unknown reason for wakeup\n");
- /* XXX Phil - I end up here when I kill obdctl */
- /* ...that's because signals aren't all masked in
- * l_wait_event() -eeb */
- GOTO(out, rc = -EINTR);
+ CERROR("request replay timed out, restarting recovery\n");
+ GOTO(out, rc = -ETIMEDOUT);
}
-#if SWAB_PARANOIA
- /* Clear reply swab mask; this is a new reply in sender's byte order */
- req->rq_rep_swab_mask = 0;
-#endif
- rc = lustre_unpack_msg(req->rq_repmsg, req->rq_replen);
- if (rc) {
- CERROR("unpack_rep failed: %d\n", rc);
- GOTO(out, rc = -EPROTO);
- }
-#if 0
- /* FIXME: Enable when BlueArc makes new release */
- if (req->rq_repmsg->type != PTL_RPC_MSG_REPLY &&
- req->rq_repmsg->type != PTL_RPC_MSG_ERR) {
- CERROR("invalid packet type received (type=%u)\n",
- req->rq_repmsg->type);
- GOTO(out, rc = -EPROTO);
- }
-#endif
+ if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR &&
+ (lustre_msg_get_status(req->rq_repmsg) == -ENOTCONN ||
+ lustre_msg_get_status(req->rq_repmsg) == -ENODEV))
+ GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
/* The transno had better not change over replay. */
- LASSERT(req->rq_reqmsg->transno == req->rq_repmsg->transno);
+ LASSERT(lustre_msg_get_transno(req->rq_reqmsg) ==
+ lustre_msg_get_transno(req->rq_repmsg));
- CDEBUG(D_NET, "got rep "LPD64"\n", req->rq_xid);
+ DEBUG_REQ(D_HA, req, "got rep");
/* let the callback do fixups, possibly including in the request */
if (req->rq_replay_cb)
req->rq_replay_cb(req);
- if (req->rq_replied && req->rq_repmsg->status != old_status) {
- DEBUG_REQ(D_HA, req, "status %d, old was %d",
- req->rq_repmsg->status, old_status);
+ if (req->rq_replied &&
+ lustre_msg_get_status(req->rq_repmsg) != aa->praa_old_status) {
+ DEBUG_REQ(D_ERROR, req, "status %d, old was %d",
+ lustre_msg_get_status(req->rq_repmsg),
+ aa->praa_old_status);
+ } else {
+ /* Put it back for re-replay. */
+ lustre_msg_set_status(req->rq_repmsg, aa->praa_old_status);
}
+ /*
+ * Errors while replay can set transno to 0, but
+ * imp_last_replay_transno shouldn't be set to 0 anyway
+ */
+ if (req->rq_transno > 0) {
+ spin_lock(&imp->imp_lock);
+ LASSERT(req->rq_transno <= imp->imp_last_replay_transno);
+ imp->imp_last_replay_transno = req->rq_transno;
+ spin_unlock(&imp->imp_lock);
+ } else
+ CERROR("Transno is 0 during replay!\n");
+ /* continue with recovery */
+ rc = ptlrpc_import_recovery_state_machine(imp);
out:
- req->rq_level = old_level;
+ req->rq_send_state = aa->praa_old_state;
+
+ if (rc != 0)
+ /* this replay failed, so restart recovery */
+ ptlrpc_connect_import(imp, NULL);
+
RETURN(rc);
}
+int ptlrpc_replay_req(struct ptlrpc_request *req)
+{
+ struct ptlrpc_replay_async_args *aa;
+ ENTRY;
+
+ LASSERT(req->rq_import->imp_state == LUSTRE_IMP_REPLAY);
+ /* Not handling automatic bulk replay yet (or ever?) */
+ LASSERT(req->rq_bulk == NULL);
+
+ LASSERT (sizeof (*aa) <= sizeof (req->rq_async_args));
+ aa = ptlrpc_req_async_args(req);
+ memset(aa, 0, sizeof *aa);
+
+ /* Prepare request to be resent with ptlrpcd */
+ aa->praa_old_state = req->rq_send_state;
+ req->rq_send_state = LUSTRE_IMP_REPLAY;
+ req->rq_phase = RQ_PHASE_NEW;
+ if (req->rq_repmsg)
+ aa->praa_old_status = lustre_msg_get_status(req->rq_repmsg);
+ req->rq_status = 0;
+ req->rq_interpret_reply = ptlrpc_replay_interpret;
+ /* Readjust the timeout for current conditions */
+ ptlrpc_at_set_req_timeout(req);
+
+ DEBUG_REQ(D_HA, req, "REPLAY");
+
+ atomic_inc(&req->rq_import->imp_replay_inflight);
+ ptlrpc_request_addref(req); /* ptlrpcd needs a ref */
+
+ ptlrpcd_add_req(req);
+ RETURN(0);
+}
+
void ptlrpc_abort_inflight(struct obd_import *imp)
{
- unsigned long flags;
struct list_head *tmp, *n;
ENTRY;
* ptlrpc_{queue,set}_wait must (and does) hold imp_lock while testing
* this flag and then putting requests on sending_list or delayed_list.
*/
- spin_lock_irqsave(&imp->imp_lock, flags);
+ spin_lock(&imp->imp_lock);
/* XXX locking? Maybe we should remove each request with the list
* locked? Also, how do we know if the requests on the list are
struct ptlrpc_request *req =
list_entry(tmp, struct ptlrpc_request, rq_list);
- DEBUG_REQ(D_HA, req, "inflight");
+ DEBUG_REQ(D_RPCTRACE, req, "inflight");
spin_lock (&req->rq_lock);
if (req->rq_import_generation < imp->imp_generation) {
req->rq_err = 1;
- if (req->rq_set != NULL)
- wake_up(&req->rq_set->set_waitq);
- else
- wake_up(&req->rq_wait_for_rep);
+ req->rq_status = -EINTR;
+ ptlrpc_wake_client_req(req);
}
spin_unlock (&req->rq_lock);
}
struct ptlrpc_request *req =
list_entry(tmp, struct ptlrpc_request, rq_list);
- DEBUG_REQ(D_HA, req, "aborting waiting req");
+ DEBUG_REQ(D_RPCTRACE, req, "aborting waiting req");
spin_lock (&req->rq_lock);
if (req->rq_import_generation < imp->imp_generation) {
req->rq_err = 1;
- if (req->rq_set != NULL)
- wake_up(&req->rq_set->set_waitq);
- else
- wake_up(&req->rq_wait_for_rep);
- spin_unlock (&req->rq_lock);
+ req->rq_status = -EINTR;
+ ptlrpc_wake_client_req(req);
}
+ spin_unlock (&req->rq_lock);
}
/* Last chance to free reqs left on the replay list, but we
- * will still leak reqs that haven't comitted. */
+ * will still leak reqs that haven't committed. */
if (imp->imp_replayable)
ptlrpc_free_committed(imp);
- spin_unlock_irqrestore(&imp->imp_lock, flags);
+ spin_unlock(&imp->imp_lock);
EXIT;
}
-static __u64 ptlrpc_last_xid = 0;
-static spinlock_t ptlrpc_last_xid_lock = SPIN_LOCK_UNLOCKED;
+void ptlrpc_abort_set(struct ptlrpc_request_set *set)
+{
+ struct list_head *tmp, *n;
+
+ LASSERT(set != NULL);
+
+ list_for_each_safe(tmp, n, &set->set_requests) {
+ struct ptlrpc_request *req =
+ list_entry(tmp, struct ptlrpc_request, rq_set_chain);
+
+ spin_lock (&req->rq_lock);
+ if (req->rq_phase != RQ_PHASE_RPC) {
+ spin_unlock (&req->rq_lock);
+ continue;
+ }
+
+ req->rq_err = 1;
+ req->rq_status = -EINTR;
+ ptlrpc_wake_client_req(req);
+ spin_unlock (&req->rq_lock);
+ }
+}
+
+static __u64 ptlrpc_last_xid;
+static spinlock_t ptlrpc_last_xid_lock;
+
+/* Initialize the XID for the node. This is common among all requests on
+ * this node, and only requires the property that it is monotonically
+ * increasing. It does not need to be sequential. Since this is also used
+ * as the RDMA match bits, it is important that a single client NOT have
+ * the same match bits for two different in-flight requests, hence we do
+ * NOT want to have an XID per target or similar.
+ *
+ * To avoid an unlikely collision between match bits after a client reboot
+ * (which would cause old to be delivered into the wrong buffer) we initialize
+ * the XID based on the current time, assuming a maximum RPC rate of 1M RPC/s.
+ * If the time is clearly incorrect, we instead use a 62-bit random number.
+ * In the worst case the random number will overflow 1M RPCs per second in
+ * 9133 years, or permutations thereof.
+ */
+#define YEAR_2004 (1ULL << 30)
+void ptlrpc_init_xid(void)
+{
+ time_t now = cfs_time_current_sec();
+
+ spin_lock_init(&ptlrpc_last_xid_lock);
+ if (now < YEAR_2004) {
+ ll_get_random_bytes(&ptlrpc_last_xid, sizeof(ptlrpc_last_xid));
+ ptlrpc_last_xid >>= 2;
+ ptlrpc_last_xid |= (1ULL << 61);
+ } else {
+ ptlrpc_last_xid = (now << 20);
+ }
+}
__u64 ptlrpc_next_xid(void)
{
return tmp;
}
-
+__u64 ptlrpc_sample_next_xid(void)
+{
+#if BITS_PER_LONG == 32
+ /* need to avoid possible word tearing on 32-bit systems */
+ __u64 tmp;
+ spin_lock(&ptlrpc_last_xid_lock);
+ tmp = ptlrpc_last_xid + 1;
+ spin_unlock(&ptlrpc_last_xid_lock);
+ return tmp;
+#else
+ /* No need to lock, since returned value is racy anyways */
+ return ptlrpc_last_xid + 1;
+#endif
+}
+EXPORT_SYMBOL(ptlrpc_sample_next_xid);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff