1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2003 Cluster File Systems, Inc.
6 * This file is part of the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
26 # define EXPORT_SYMTAB
28 #define DEBUG_SUBSYSTEM S_LDLM
31 # include <libcfs/libcfs.h>
33 # include <liblustre.h>
36 #include <lustre_mds.h>
37 #include <lustre_dlm.h>
38 #include <lustre_net.h>
40 /* @priority: if non-zero, move the selected to the list head
41 * @create: if zero, only search in existed connections
43 static int import_set_conn(struct obd_import *imp, struct obd_uuid *uuid,
44 int priority, int create)
46 struct ptlrpc_connection *ptlrpc_conn;
47 struct obd_import_conn *imp_conn = NULL, *item;
51 if (!create && !priority) {
52 CDEBUG(D_HA, "Nothing to do\n");
56 ptlrpc_conn = ptlrpc_uuid_to_connection(uuid);
58 CDEBUG(D_HA, "can't find connection %s\n", uuid->uuid);
63 OBD_ALLOC(imp_conn, sizeof(*imp_conn));
65 GOTO(out_put, rc = -ENOMEM);
69 spin_lock(&imp->imp_lock);
70 list_for_each_entry(item, &imp->imp_conn_list, oic_item) {
71 if (obd_uuid_equals(uuid, &item->oic_uuid)) {
73 list_del(&item->oic_item);
74 list_add(&item->oic_item, &imp->imp_conn_list);
75 item->oic_last_attempt = 0;
77 CDEBUG(D_HA, "imp %p@%s: found existing conn %s%s\n",
78 imp, imp->imp_obd->obd_name, uuid->uuid,
79 (priority ? ", moved to head" : ""));
80 spin_unlock(&imp->imp_lock);
81 GOTO(out_free, rc = 0);
86 imp_conn->oic_conn = ptlrpc_conn;
87 imp_conn->oic_uuid = *uuid;
88 item->oic_last_attempt = 0;
90 list_add(&imp_conn->oic_item, &imp->imp_conn_list);
92 list_add_tail(&imp_conn->oic_item, &imp->imp_conn_list);
93 CDEBUG(D_HA, "imp %p@%s: add connection %s at %s\n",
94 imp, imp->imp_obd->obd_name, uuid->uuid,
95 (priority ? "head" : "tail"));
97 spin_unlock(&imp->imp_lock);
98 GOTO(out_free, rc = -ENOENT);
102 spin_unlock(&imp->imp_lock);
106 OBD_FREE(imp_conn, sizeof(*imp_conn));
108 ptlrpc_put_connection(ptlrpc_conn);
112 int import_set_conn_priority(struct obd_import *imp, struct obd_uuid *uuid)
114 return import_set_conn(imp, uuid, 1, 0);
117 int client_import_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
120 return import_set_conn(imp, uuid, priority, 1);
123 int client_import_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
125 struct obd_import_conn *imp_conn;
126 struct obd_export *dlmexp;
130 spin_lock(&imp->imp_lock);
131 if (list_empty(&imp->imp_conn_list)) {
132 LASSERT(!imp->imp_connection);
136 list_for_each_entry(imp_conn, &imp->imp_conn_list, oic_item) {
137 if (!obd_uuid_equals(uuid, &imp_conn->oic_uuid))
139 LASSERT(imp_conn->oic_conn);
141 /* is current conn? */
142 if (imp_conn == imp->imp_conn_current) {
143 LASSERT(imp_conn->oic_conn == imp->imp_connection);
145 if (imp->imp_state != LUSTRE_IMP_CLOSED &&
146 imp->imp_state != LUSTRE_IMP_DISCON) {
147 CERROR("can't remove current connection\n");
148 GOTO(out, rc = -EBUSY);
151 ptlrpc_put_connection(imp->imp_connection);
152 imp->imp_connection = NULL;
154 dlmexp = class_conn2export(&imp->imp_dlm_handle);
155 if (dlmexp && dlmexp->exp_connection) {
156 LASSERT(dlmexp->exp_connection ==
158 ptlrpc_put_connection(dlmexp->exp_connection);
159 dlmexp->exp_connection = NULL;
163 list_del(&imp_conn->oic_item);
164 ptlrpc_put_connection(imp_conn->oic_conn);
165 OBD_FREE(imp_conn, sizeof(*imp_conn));
166 CDEBUG(D_HA, "imp %p@%s: remove connection %s\n",
167 imp, imp->imp_obd->obd_name, uuid->uuid);
172 spin_unlock(&imp->imp_lock);
174 CERROR("connection %s not found\n", uuid->uuid);
178 /* configure an RPC client OBD device
183 * 3 - inactive-on-startup
185 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf)
187 struct lustre_cfg* lcfg = buf;
188 struct client_obd *cli = &obddev->u.cli;
189 struct obd_import *imp;
190 struct obd_uuid server_uuid;
191 int rq_portal, rp_portal, connect_op;
192 char *name = obddev->obd_type->typ_name;
196 /* In a more perfect world, we would hang a ptlrpc_client off of
197 * obd_type and just use the values from there. */
198 if (!strcmp(name, LUSTRE_OSC_NAME)) {
200 /* Can be removed in Lustre 1.8, for compatibility only */
201 rq_portal = OST_IO_PORTAL;
203 rq_portal = OST_REQUEST_PORTAL;
205 rp_portal = OSC_REPLY_PORTAL;
206 connect_op = OST_CONNECT;
207 } else if (!strcmp(name, LUSTRE_MDC_NAME)) {
208 rq_portal = MDS_REQUEST_PORTAL;
209 rp_portal = MDC_REPLY_PORTAL;
210 connect_op = MDS_CONNECT;
211 } else if (!strcmp(name, LUSTRE_MGC_NAME)) {
212 rq_portal = MGS_REQUEST_PORTAL;
213 rp_portal = MGC_REPLY_PORTAL;
214 connect_op = MGS_CONNECT;
216 CERROR("unknown client OBD type \"%s\", can't setup\n",
221 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
222 CERROR("requires a TARGET UUID\n");
226 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > 37) {
227 CERROR("client UUID must be less than 38 characters\n");
231 if (LUSTRE_CFG_BUFLEN(lcfg, 2) < 1) {
232 CERROR("setup requires a SERVER UUID\n");
236 if (LUSTRE_CFG_BUFLEN(lcfg, 2) > 37) {
237 CERROR("target UUID must be less than 38 characters\n");
241 sema_init(&cli->cl_sem, 1);
242 sema_init(&cli->cl_mgc_sem, 1);
243 cli->cl_conn_count = 0;
244 memcpy(server_uuid.uuid, lustre_cfg_buf(lcfg, 2),
245 min_t(unsigned int, LUSTRE_CFG_BUFLEN(lcfg, 2),
246 sizeof(server_uuid)));
249 cli->cl_avail_grant = 0;
250 /* FIXME: should limit this for the sum of all cl_dirty_max */
251 cli->cl_dirty_max = OSC_MAX_DIRTY_DEFAULT * 1024 * 1024;
252 if (cli->cl_dirty_max >> CFS_PAGE_SHIFT > num_physpages / 8)
253 cli->cl_dirty_max = num_physpages << (CFS_PAGE_SHIFT - 3);
254 CFS_INIT_LIST_HEAD(&cli->cl_cache_waiters);
255 CFS_INIT_LIST_HEAD(&cli->cl_loi_ready_list);
256 CFS_INIT_LIST_HEAD(&cli->cl_loi_write_list);
257 CFS_INIT_LIST_HEAD(&cli->cl_loi_read_list);
258 client_obd_list_lock_init(&cli->cl_loi_list_lock);
259 cli->cl_r_in_flight = 0;
260 cli->cl_w_in_flight = 0;
261 spin_lock_init(&cli->cl_read_rpc_hist.oh_lock);
262 spin_lock_init(&cli->cl_write_rpc_hist.oh_lock);
263 spin_lock_init(&cli->cl_read_page_hist.oh_lock);
264 spin_lock_init(&cli->cl_write_page_hist.oh_lock);
265 spin_lock_init(&cli->cl_read_offset_hist.oh_lock);
266 spin_lock_init(&cli->cl_write_offset_hist.oh_lock);
268 /* This value may be changed at connect time in
269 ptlrpc_connect_interpret. */
270 cli->cl_max_pages_per_rpc = min((int)PTLRPC_MAX_BRW_PAGES,
271 (int)(1024 * 1024 >> CFS_PAGE_SHIFT));
273 if (!strcmp(name, LUSTRE_MDC_NAME)) {
274 cli->cl_max_rpcs_in_flight = MDC_MAX_RIF_DEFAULT;
275 } else if (num_physpages >> (20 - CFS_PAGE_SHIFT) <= 128 /* MB */) {
276 cli->cl_max_rpcs_in_flight = 2;
277 } else if (num_physpages >> (20 - CFS_PAGE_SHIFT) <= 256 /* MB */) {
278 cli->cl_max_rpcs_in_flight = 3;
279 } else if (num_physpages >> (20 - CFS_PAGE_SHIFT) <= 512 /* MB */) {
280 cli->cl_max_rpcs_in_flight = 4;
282 cli->cl_max_rpcs_in_flight = OSC_MAX_RIF_DEFAULT;
286 CERROR("ldlm_get_ref failed: %d\n", rc);
290 ptlrpc_init_client(rq_portal, rp_portal, name,
291 &obddev->obd_ldlm_client);
293 imp = class_new_import(obddev);
295 GOTO(err_ldlm, rc = -ENOENT);
296 imp->imp_client = &obddev->obd_ldlm_client;
297 imp->imp_connect_op = connect_op;
298 imp->imp_initial_recov = 1;
299 imp->imp_initial_recov_bk = 0;
300 CFS_INIT_LIST_HEAD(&imp->imp_pinger_chain);
301 memcpy(cli->cl_target_uuid.uuid, lustre_cfg_buf(lcfg, 1),
302 LUSTRE_CFG_BUFLEN(lcfg, 1));
303 class_import_put(imp);
305 rc = client_import_add_conn(imp, &server_uuid, 1);
307 CERROR("can't add initial connection\n");
308 GOTO(err_import, rc);
311 cli->cl_import = imp;
312 /* cli->cl_max_mds_{easize,cookiesize} updated by mdc_init_ea_size() */
313 cli->cl_max_mds_easize = sizeof(struct lov_mds_md);
314 cli->cl_max_mds_cookiesize = sizeof(struct llog_cookie);
316 if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
317 if (!strcmp(lustre_cfg_string(lcfg, 3), "inactive")) {
318 CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
319 name, obddev->obd_name,
320 cli->cl_target_uuid.uuid);
322 spin_lock(&imp->imp_lock);
323 imp->imp_invalid = 1;
324 spin_unlock(&imp->imp_lock);
328 cli->cl_qchk_stat = CL_NOT_QUOTACHECKED;
333 class_destroy_import(imp);
341 int client_obd_cleanup(struct obd_device *obddev)
344 ldlm_put_ref(obddev->obd_force);
349 /* ->o_connect() method for client side (OSC and MDC and MGC) */
350 int client_connect_import(struct lustre_handle *dlm_handle,
351 struct obd_device *obd, struct obd_uuid *cluuid,
352 struct obd_connect_data *data)
354 struct client_obd *cli = &obd->u.cli;
355 struct obd_import *imp = cli->cl_import;
356 struct obd_export *exp;
357 struct obd_connect_data *ocd;
361 mutex_down(&cli->cl_sem);
362 rc = class_connect(dlm_handle, obd, cluuid);
366 cli->cl_conn_count++;
367 if (cli->cl_conn_count > 1)
369 exp = class_conn2export(dlm_handle);
371 if (obd->obd_namespace != NULL)
372 CERROR("already have namespace!\n");
373 obd->obd_namespace = ldlm_namespace_new(obd->obd_name,
374 LDLM_NAMESPACE_CLIENT);
375 if (obd->obd_namespace == NULL)
376 GOTO(out_disco, rc = -ENOMEM);
378 imp->imp_dlm_handle = *dlm_handle;
379 rc = ptlrpc_init_import(imp);
383 ocd = &imp->imp_connect_data;
386 imp->imp_connect_flags_orig = data->ocd_connect_flags;
389 rc = ptlrpc_connect_import(imp, NULL);
391 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
394 LASSERT(exp->exp_connection);
397 LASSERT((ocd->ocd_connect_flags & data->ocd_connect_flags) ==
398 ocd->ocd_connect_flags);
399 data->ocd_connect_flags = ocd->ocd_connect_flags;
402 ptlrpc_pinger_add_import(imp);
407 ldlm_namespace_free(obd->obd_namespace, 0);
408 obd->obd_namespace = NULL;
410 cli->cl_conn_count--;
411 class_disconnect(exp);
413 class_export_put(exp);
416 mutex_up(&cli->cl_sem);
420 int client_disconnect_export(struct obd_export *exp)
422 struct obd_device *obd = class_exp2obd(exp);
423 struct client_obd *cli;
424 struct obd_import *imp;
429 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
430 exp, exp ? exp->exp_handle.h_cookie : -1);
435 imp = cli->cl_import;
437 mutex_down(&cli->cl_sem);
438 if (!cli->cl_conn_count) {
439 CERROR("disconnecting disconnected device (%s)\n",
441 GOTO(out_sem, rc = -EINVAL);
444 cli->cl_conn_count--;
445 if (cli->cl_conn_count)
446 GOTO(out_no_disconnect, rc = 0);
448 /* Mark import deactivated now, so we don't try to reconnect if any
449 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
450 * fully deactivate the import, or that would drop all requests. */
451 spin_lock(&imp->imp_lock);
452 imp->imp_deactive = 1;
453 spin_unlock(&imp->imp_lock);
455 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
456 * delete it regardless. (It's safe to delete an import that was
458 (void)ptlrpc_pinger_del_import(imp);
460 if (obd->obd_namespace != NULL) {
461 /* obd_no_recov == local only */
462 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
463 obd->obd_no_recov ? LDLM_FL_LOCAL_ONLY:0,
465 ldlm_namespace_free(obd->obd_namespace, obd->obd_no_recov);
466 obd->obd_namespace = NULL;
469 /* Yeah, obd_no_recov also (mainly) means "forced shutdown". */
470 if (!obd->obd_no_recov)
471 rc = ptlrpc_disconnect_import(imp, 0);
473 ptlrpc_invalidate_import(imp);
474 ptlrpc_free_rq_pool(imp->imp_rq_pool);
475 class_destroy_import(imp);
476 cli->cl_import = NULL;
480 err = class_disconnect(exp);
484 mutex_up(&cli->cl_sem);
488 /* --------------------------------------------------------------------------
489 * from old lib/target.c
490 * -------------------------------------------------------------------------- */
492 int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
493 struct obd_uuid *cluuid)
496 if (exp->exp_connection && exp->exp_imp_reverse) {
497 struct lustre_handle *hdl;
498 hdl = &exp->exp_imp_reverse->imp_remote_handle;
499 /* Might be a re-connect after a partition. */
500 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
501 CWARN("%s: %s reconnecting\n", exp->exp_obd->obd_name,
503 conn->cookie = exp->exp_handle.h_cookie;
504 /* target_handle_connect() treats EALREADY and
505 * -EALREADY differently. EALREADY means we are
506 * doing a valid reconnect from the same client. */
509 CERROR("%s reconnecting from %s, "
510 "handle mismatch (ours "LPX64", theirs "
511 LPX64")\n", cluuid->uuid,
512 exp->exp_connection->c_remote_uuid.uuid,
513 hdl->cookie, conn->cookie);
514 memset(conn, 0, sizeof *conn);
515 /* target_handle_connect() treats EALREADY and
516 * -EALREADY differently. -EALREADY is an error
517 * (same UUID, different handle). */
522 conn->cookie = exp->exp_handle.h_cookie;
523 CDEBUG(D_HA, "connect export for UUID '%s' at %p, cookie "LPX64"\n",
524 cluuid->uuid, exp, conn->cookie);
528 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
531 struct obd_export *exp = cb_data;
533 CDEBUG(D_HA, "%s: committing for initial connect of %s\n",
534 obd->obd_name, exp->exp_client_uuid.uuid);
536 spin_lock(&exp->exp_lock);
537 exp->exp_need_sync = 0;
538 spin_unlock(&exp->exp_lock);
540 EXPORT_SYMBOL(target_client_add_cb);
542 int target_handle_connect(struct ptlrpc_request *req, svc_handler_t handler)
544 struct obd_device *target, *targref = NULL;
545 struct obd_export *export = NULL;
546 struct obd_import *revimp;
547 struct lustre_handle conn;
548 struct obd_uuid tgtuuid;
549 struct obd_uuid cluuid;
550 struct obd_uuid remote_uuid;
553 int rc = 0, abort_recovery;
554 struct obd_connect_data *data;
555 int size[2] = { sizeof(struct ptlrpc_body), sizeof(*data) };
558 OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
560 LASSERT_REQSWAB(req, REQ_REC_OFF);
561 str = lustre_msg_string(req->rq_reqmsg, REQ_REC_OFF, sizeof(tgtuuid)-1);
563 DEBUG_REQ(D_ERROR, req, "bad target UUID for connect\n");
564 GOTO(out, rc = -EINVAL);
567 obd_str2uuid (&tgtuuid, str);
568 target = class_uuid2obd(&tgtuuid);
570 /* old (pre 1.6) lustre_process_log tries to connect to mdsname
571 (eg. mdsA) instead of uuid. */
573 snprintf((char *)tgtuuid.uuid, sizeof(tgtuuid), "%s_UUID", str);
574 target = class_uuid2obd(&tgtuuid);
577 target = class_name2obd(str);
580 if (!target || target->obd_stopping || !target->obd_set_up) {
581 LCONSOLE_ERROR("UUID '%s' is not available "
582 " for connect (%s)\n", str,
583 !target ? "no target" :
584 (target->obd_stopping ? "stopping" :
586 GOTO(out, rc = -ENODEV);
589 if (target->obd_no_conn) {
590 LCONSOLE_WARN("%s: temporarily refusing client connection "
591 "from %s\n", target->obd_name,
592 libcfs_nid2str(req->rq_peer.nid));
593 GOTO(out, rc = -EAGAIN);
596 /* Make sure the target isn't cleaned up while we're here. Yes,
597 there's still a race between the above check and our incref here.
598 Really, class_uuid2obd should take the ref. */
599 targref = class_incref(target);
601 LASSERT_REQSWAB(req, REQ_REC_OFF + 1);
602 str = lustre_msg_string(req->rq_reqmsg, REQ_REC_OFF + 1,
605 DEBUG_REQ(D_ERROR, req, "bad client UUID for connect\n");
606 GOTO(out, rc = -EINVAL);
609 obd_str2uuid (&cluuid, str);
611 /* XXX extract a nettype and format accordingly */
612 switch (sizeof(lnet_nid_t)) {
613 /* NB the casts only avoid compiler warnings */
615 snprintf(remote_uuid.uuid, sizeof remote_uuid,
616 "NET_"LPX64"_UUID", (__u64)req->rq_peer.nid);
619 snprintf(remote_uuid.uuid, sizeof remote_uuid,
620 "NET_%x_UUID", (__u32)req->rq_peer.nid);
626 spin_lock_bh(&target->obd_processing_task_lock);
627 abort_recovery = target->obd_abort_recovery;
628 spin_unlock_bh(&target->obd_processing_task_lock);
630 target_abort_recovery(target);
632 tmp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, sizeof conn);
634 GOTO(out, rc = -EPROTO);
636 memcpy(&conn, tmp, sizeof conn);
638 data = lustre_swab_reqbuf(req, REQ_REC_OFF + 3, sizeof(*data),
639 lustre_swab_connect);
640 rc = lustre_pack_reply(req, 2, size, NULL);
644 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
646 DEBUG_REQ(D_WARNING, req, "Refusing old (unversioned) "
647 "libclient connection attempt\n");
648 GOTO(out, rc = -EPROTO);
649 } else if (data->ocd_version < LUSTRE_VERSION_CODE -
650 LUSTRE_VERSION_ALLOWED_OFFSET ||
651 data->ocd_version > LUSTRE_VERSION_CODE +
652 LUSTRE_VERSION_ALLOWED_OFFSET) {
653 DEBUG_REQ(D_WARNING, req, "Refusing %s (%d.%d.%d.%d) "
654 "libclient connection attempt\n",
655 data->ocd_version < LUSTRE_VERSION_CODE ?
657 OBD_OCD_VERSION_MAJOR(data->ocd_version),
658 OBD_OCD_VERSION_MINOR(data->ocd_version),
659 OBD_OCD_VERSION_PATCH(data->ocd_version),
660 OBD_OCD_VERSION_FIX(data->ocd_version));
661 data = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
662 offsetof(typeof(*data),
664 sizeof(data->ocd_version));
666 data->ocd_connect_flags = OBD_CONNECT_VERSION;
667 data->ocd_version = LUSTRE_VERSION_CODE;
669 GOTO(out, rc = -EPROTO);
673 /* lctl gets a backstage, all-access pass. */
674 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
675 goto dont_check_exports;
677 spin_lock(&target->obd_dev_lock);
678 list_for_each(p, &target->obd_exports) {
679 export = list_entry(p, struct obd_export, exp_obd_chain);
680 if (obd_uuid_equals(&cluuid, &export->exp_client_uuid)) {
681 if (export->exp_connecting) { /* bug 9635, et. al. */
682 CWARN("%s: exp %p already connecting\n",
683 export->exp_obd->obd_name, export);
689 /* make darn sure this is coming from the same peer
690 * if the UUIDs matched */
691 if ((export->exp_connection != NULL) &&
692 (strcmp(libcfs_nid2str(req->rq_peer.nid),
693 libcfs_nid2str(export->exp_connection->c_peer.nid)))) {
694 CWARN("%s: cookie %s seen on new NID %s when "
695 "existing NID %s is already connected\n",
696 target->obd_name, cluuid.uuid,
697 libcfs_nid2str(req->rq_peer.nid),
698 libcfs_nid2str(export->exp_connection->c_peer.nid));
704 spin_lock(&export->exp_lock);
705 export->exp_connecting = 1;
706 spin_unlock(&export->exp_lock);
707 spin_unlock(&target->obd_dev_lock);
708 LASSERT(export->exp_obd == target);
710 rc = target_handle_reconnect(&conn, export, &cluuid);
715 /* If we found an export, we already unlocked. */
717 spin_unlock(&target->obd_dev_lock);
718 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
719 } else if (req->rq_export == NULL &&
720 atomic_read(&export->exp_rpc_count) > 0) {
721 CWARN("%s: refuse connection from %s/%s to 0x%p/%d\n",
722 target->obd_name, cluuid.uuid,
723 libcfs_nid2str(req->rq_peer.nid),
724 export, atomic_read(&export->exp_refcount));
725 GOTO(out, rc = -EBUSY);
726 } else if (req->rq_export != NULL &&
727 atomic_read(&export->exp_rpc_count) > 1) {
728 CWARN("%s: refuse reconnection from %s@%s to 0x%p/%d\n",
729 target->obd_name, cluuid.uuid,
730 libcfs_nid2str(req->rq_peer.nid),
731 export, atomic_read(&export->exp_rpc_count));
732 GOTO(out, rc = -EBUSY);
733 } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
734 CERROR("%s: NID %s (%s) reconnected with 1 conn_cnt; "
735 "cookies not random?\n", target->obd_name,
736 libcfs_nid2str(req->rq_peer.nid), cluuid.uuid);
737 GOTO(out, rc = -EALREADY);
739 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
742 /* We want to handle EALREADY but *not* -EALREADY from
743 * target_handle_reconnect(), return reconnection state in a flag */
744 if (rc == EALREADY) {
745 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
751 /* Tell the client if we're in recovery. */
752 /* If this is the first client, start the recovery timer */
753 if (target->obd_recovering) {
754 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
755 target_start_recovery_timer(target, handler);
758 /* Tell the client if we support replayable requests */
759 if (target->obd_replayable)
760 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
762 if (export == NULL) {
763 if (target->obd_recovering) {
764 CERROR("%s: denying connection for new client %s (%s): "
765 "%d clients in recovery for %lds\n",
767 libcfs_nid2str(req->rq_peer.nid), cluuid.uuid,
768 target->obd_recoverable_clients,
769 cfs_duration_sec(cfs_time_sub(cfs_timer_deadline(&target->obd_recovery_timer),
770 cfs_time_current())));
774 rc = obd_connect(&conn, target, &cluuid, data);
777 rc = obd_reconnect(export, target, &cluuid, data);
783 /* Return only the parts of obd_connect_data that we understand, so the
784 * client knows that we don't understand the rest. */
786 memcpy(lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
788 data, sizeof(*data));
790 /* If all else goes well, this is our RPC return code. */
793 lustre_msg_set_handle(req->rq_repmsg, &conn);
795 /* ownership of this export ref transfers to the request AFTER we
796 * drop any previous reference the request had, but we don't want
797 * that to go to zero before we get our new export reference. */
798 export = class_conn2export(&conn);
800 DEBUG_REQ(D_ERROR, req, "Missing export!\n");
801 GOTO(out, rc = -ENODEV);
804 /* If the client and the server are the same node, we will already
805 * have an export that really points to the client's DLM export,
806 * because we have a shared handles table.
808 * XXX this will go away when shaver stops sending the "connect" handle
809 * in the real "remote handle" field of the request --phik 24 Apr 2003
811 if (req->rq_export != NULL)
812 class_export_put(req->rq_export);
814 req->rq_export = export;
816 spin_lock(&export->exp_lock);
817 if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
818 CERROR("%s: %s already connected at higher conn_cnt: %d > %d\n",
819 cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
820 export->exp_conn_cnt,
821 lustre_msg_get_conn_cnt(req->rq_reqmsg));
823 spin_unlock(&export->exp_lock);
824 GOTO(out, rc = -EALREADY);
826 export->exp_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
828 /* request from liblustre? Don't evict it for not pinging. */
829 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
830 export->exp_libclient = 1;
831 spin_unlock(&export->exp_lock);
833 spin_lock(&target->obd_dev_lock);
834 list_del_init(&export->exp_obd_chain_timed);
835 spin_unlock(&target->obd_dev_lock);
837 spin_unlock(&export->exp_lock);
840 if (export->exp_connection != NULL)
841 ptlrpc_put_connection(export->exp_connection);
842 export->exp_connection = ptlrpc_get_connection(req->rq_peer,
846 if (lustre_msg_get_op_flags(req->rq_repmsg) & MSG_CONNECT_RECONNECT)
849 if (target->obd_recovering)
850 target->obd_connected_clients++;
853 lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, sizeof conn),
856 if (export->exp_imp_reverse != NULL)
857 class_destroy_import(export->exp_imp_reverse);
858 revimp = export->exp_imp_reverse = class_new_import(target);
859 revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
860 revimp->imp_client = &export->exp_obd->obd_ldlm_client;
861 revimp->imp_remote_handle = conn;
862 revimp->imp_dlm_fake = 1;
863 revimp->imp_state = LUSTRE_IMP_FULL;
865 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_NEXT_VER) {
866 revimp->imp_msg_magic = LUSTRE_MSG_MAGIC_V2;
867 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_NEXT_VER);
870 class_import_put(revimp);
873 spin_lock(&export->exp_lock);
874 export->exp_connecting = 0;
875 spin_unlock(&export->exp_lock);
878 class_decref(targref);
884 int target_handle_disconnect(struct ptlrpc_request *req)
889 rc = lustre_pack_reply(req, 1, NULL, NULL);
893 /* keep the rq_export around so we can send the reply */
894 req->rq_status = obd_disconnect(class_export_get(req->rq_export));
898 void target_destroy_export(struct obd_export *exp)
900 /* exports created from last_rcvd data, and "fake"
901 exports created by lctl don't have an import */
902 if (exp->exp_imp_reverse != NULL)
903 class_destroy_import(exp->exp_imp_reverse);
905 /* We cancel locks at disconnect time, but this will catch any locks
906 * granted in a race with recovery-induced disconnect. */
907 if (exp->exp_obd->obd_namespace != NULL)
908 ldlm_cancel_locks_for_export(exp);
916 static void target_release_saved_req(struct ptlrpc_request *req)
918 if (req->rq_reply_state != NULL) {
919 ptlrpc_rs_decref(req->rq_reply_state);
920 /* req->rq_reply_state = NULL; */
923 class_export_put(req->rq_export);
924 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
925 OBD_FREE(req, sizeof *req);
928 static void target_finish_recovery(struct obd_device *obd)
930 struct list_head *tmp, *n;
932 LCONSOLE_INFO("%s: sending delayed replies to recovered clients\n",
935 ldlm_reprocess_all_ns(obd->obd_namespace);
937 /* when recovery finished, cleanup orphans on mds and ost */
938 if (OBT(obd) && OBP(obd, postrecov)) {
939 int rc = OBP(obd, postrecov)(obd);
940 LCONSOLE_WARN("%s: recovery %s: rc %d\n", obd->obd_name,
941 rc < 0 ? "failed" : "complete", rc);
944 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
945 struct ptlrpc_request *req;
946 req = list_entry(tmp, struct ptlrpc_request, rq_list);
947 list_del(&req->rq_list);
948 DEBUG_REQ(D_HA, req, "delayed:");
950 target_release_saved_req(req);
952 obd->obd_recovery_end = CURRENT_SECONDS;
955 static void abort_recovery_queue(struct obd_device *obd)
957 struct ptlrpc_request *req;
958 struct list_head *tmp, *n;
961 list_for_each_safe(tmp, n, &obd->obd_recovery_queue) {
962 req = list_entry(tmp, struct ptlrpc_request, rq_list);
963 list_del(&req->rq_list);
964 DEBUG_REQ(D_ERROR, req, "aborted:");
965 req->rq_status = -ENOTCONN;
966 req->rq_type = PTL_RPC_MSG_ERR;
967 rc = lustre_pack_reply(req, 1, NULL, NULL);
971 DEBUG_REQ(D_ERROR, req,
972 "packing failed for abort-reply; skipping");
974 target_release_saved_req(req);
978 /* Called from a cleanup function if the device is being cleaned up
979 forcefully. The exports should all have been disconnected already,
980 the only thing left to do is
981 - clear the recovery flags
983 - free queued requests and replies, but don't send replies
984 Because the obd_stopping flag is set, no new requests should be received.
987 void target_cleanup_recovery(struct obd_device *obd)
989 struct list_head *tmp, *n;
990 struct ptlrpc_request *req;
993 LASSERT(obd->obd_stopping);
995 spin_lock_bh(&obd->obd_processing_task_lock);
996 if (!obd->obd_recovering) {
997 spin_unlock_bh(&obd->obd_processing_task_lock);
1001 obd->obd_recovering = obd->obd_abort_recovery = 0;
1002 target_cancel_recovery_timer(obd);
1003 spin_unlock_bh(&obd->obd_processing_task_lock);
1005 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
1006 req = list_entry(tmp, struct ptlrpc_request, rq_list);
1007 list_del(&req->rq_list);
1008 target_release_saved_req(req);
1011 list_for_each_safe(tmp, n, &obd->obd_recovery_queue) {
1012 req = list_entry(tmp, struct ptlrpc_request, rq_list);
1013 list_del(&req->rq_list);
1014 target_release_saved_req(req);
1019 void target_abort_recovery(void *data)
1021 struct obd_device *obd = data;
1024 spin_lock_bh(&obd->obd_processing_task_lock);
1025 if (!obd->obd_recovering) {
1026 spin_unlock_bh(&obd->obd_processing_task_lock);
1030 obd->obd_recovering = obd->obd_abort_recovery = 0;
1031 obd->obd_recoverable_clients = 0;
1032 target_cancel_recovery_timer(obd);
1033 spin_unlock_bh(&obd->obd_processing_task_lock);
1035 LCONSOLE_WARN("%s: recovery period over; disconnecting unfinished "
1036 "clients.\n", obd->obd_name);
1037 class_disconnect_stale_exports(obd);
1038 abort_recovery_queue(obd);
1040 target_finish_recovery(obd);
1041 CDEBUG(D_HA, "%s: recovery complete\n", obd_uuid2str(&obd->obd_uuid));
1045 static void target_recovery_expired(unsigned long castmeharder)
1047 struct obd_device *obd = (struct obd_device *)castmeharder;
1048 CERROR("%s: recovery timed out, aborting\n", obd->obd_name);
1049 spin_lock_bh(&obd->obd_processing_task_lock);
1050 if (obd->obd_recovering)
1051 obd->obd_abort_recovery = 1;
1052 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1053 spin_unlock_bh(&obd->obd_processing_task_lock);
1057 /* obd_processing_task_lock should be held */
1058 void target_cancel_recovery_timer(struct obd_device *obd)
1060 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
1061 cfs_timer_disarm(&obd->obd_recovery_timer);
1064 static void reset_recovery_timer(struct obd_device *obd)
1066 spin_lock_bh(&obd->obd_processing_task_lock);
1067 if (!obd->obd_recovering) {
1068 spin_unlock_bh(&obd->obd_processing_task_lock);
1071 cfs_timer_arm(&obd->obd_recovery_timer,
1072 cfs_time_shift(OBD_RECOVERY_TIMEOUT));
1073 spin_unlock_bh(&obd->obd_processing_task_lock);
1074 CDEBUG(D_HA, "%s: timer will expire in %u seconds\n", obd->obd_name,
1075 OBD_RECOVERY_TIMEOUT);
1076 /* Only used for lprocfs_status */
1077 obd->obd_recovery_end = CURRENT_SECONDS + OBD_RECOVERY_TIMEOUT;
1081 /* Only start it the first time called */
1082 void target_start_recovery_timer(struct obd_device *obd, svc_handler_t handler)
1084 spin_lock_bh(&obd->obd_processing_task_lock);
1085 if (obd->obd_recovery_handler) {
1086 spin_unlock_bh(&obd->obd_processing_task_lock);
1089 CWARN("%s: starting recovery timer (%us)\n", obd->obd_name,
1090 OBD_RECOVERY_TIMEOUT);
1091 obd->obd_recovery_handler = handler;
1092 cfs_timer_init(&obd->obd_recovery_timer, target_recovery_expired, obd);
1093 spin_unlock_bh(&obd->obd_processing_task_lock);
1095 reset_recovery_timer(obd);
1098 static int check_for_next_transno(struct obd_device *obd)
1100 struct ptlrpc_request *req;
1101 int wake_up = 0, connected, completed, queue_len, max;
1102 __u64 next_transno, req_transno;
1104 spin_lock_bh(&obd->obd_processing_task_lock);
1105 req = list_entry(obd->obd_recovery_queue.next,
1106 struct ptlrpc_request, rq_list);
1107 max = obd->obd_max_recoverable_clients;
1108 req_transno = lustre_msg_get_transno(req->rq_reqmsg);
1109 connected = obd->obd_connected_clients;
1110 completed = max - obd->obd_recoverable_clients;
1111 queue_len = obd->obd_requests_queued_for_recovery;
1112 next_transno = obd->obd_next_recovery_transno;
1114 CDEBUG(D_HA,"max: %d, connected: %d, completed: %d, queue_len: %d, "
1115 "req_transno: "LPU64", next_transno: "LPU64"\n",
1116 max, connected, completed, queue_len, req_transno, next_transno);
1117 if (obd->obd_abort_recovery) {
1118 CDEBUG(D_HA, "waking for aborted recovery\n");
1120 } else if (!obd->obd_recovering) {
1121 CDEBUG(D_HA, "waking for completed recovery (?)\n");
1123 } else if (req_transno == next_transno) {
1124 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
1126 } else if (queue_len + completed == max) {
1128 "waking for skipped transno (skip: "LPD64
1129 ", ql: %d, comp: %d, conn: %d, next: "LPD64")\n",
1130 next_transno, queue_len, completed, max, req_transno);
1131 obd->obd_next_recovery_transno = req_transno;
1134 spin_unlock_bh(&obd->obd_processing_task_lock);
1135 LASSERT(lustre_msg_get_transno(req->rq_reqmsg) >= next_transno);
1139 static void process_recovery_queue(struct obd_device *obd)
1141 struct ptlrpc_request *req;
1142 int abort_recovery = 0;
1143 struct l_wait_info lwi = { 0 };
1147 spin_lock_bh(&obd->obd_processing_task_lock);
1148 LASSERT(obd->obd_processing_task == cfs_curproc_pid());
1149 req = list_entry(obd->obd_recovery_queue.next,
1150 struct ptlrpc_request, rq_list);
1152 if (lustre_msg_get_transno(req->rq_reqmsg) !=
1153 obd->obd_next_recovery_transno) {
1154 spin_unlock_bh(&obd->obd_processing_task_lock);
1155 CDEBUG(D_HA, "Waiting for transno "LPD64" (1st is "
1157 obd->obd_next_recovery_transno,
1158 lustre_msg_get_transno(req->rq_reqmsg));
1159 l_wait_event(obd->obd_next_transno_waitq,
1160 check_for_next_transno(obd), &lwi);
1161 spin_lock_bh(&obd->obd_processing_task_lock);
1162 abort_recovery = obd->obd_abort_recovery;
1163 spin_unlock_bh(&obd->obd_processing_task_lock);
1164 if (abort_recovery) {
1165 target_abort_recovery(obd);
1170 list_del_init(&req->rq_list);
1171 obd->obd_requests_queued_for_recovery--;
1172 spin_unlock_bh(&obd->obd_processing_task_lock);
1174 DEBUG_REQ(D_HA, req, "processing: ");
1175 (void)obd->obd_recovery_handler(req);
1176 obd->obd_replayed_requests++;
1177 reset_recovery_timer(obd);
1178 /* bug 1580: decide how to properly sync() in recovery */
1179 //mds_fsync_super(obd->u.obt.obt_sb);
1180 class_export_put(req->rq_export);
1181 if (req->rq_reply_state != NULL) {
1182 ptlrpc_rs_decref(req->rq_reply_state);
1183 /* req->rq_reply_state = NULL; */
1185 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
1186 OBD_FREE(req, sizeof *req);
1187 spin_lock_bh(&obd->obd_processing_task_lock);
1188 obd->obd_next_recovery_transno++;
1189 if (list_empty(&obd->obd_recovery_queue)) {
1190 obd->obd_processing_task = 0;
1191 spin_unlock_bh(&obd->obd_processing_task_lock);
1194 spin_unlock_bh(&obd->obd_processing_task_lock);
1199 int target_queue_recovery_request(struct ptlrpc_request *req,
1200 struct obd_device *obd)
1202 struct list_head *tmp;
1204 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
1205 struct ptlrpc_request *saved_req;
1206 struct lustre_msg *reqmsg;
1208 /* CAVEAT EMPTOR: The incoming request message has been swabbed
1209 * (i.e. buflens etc are in my own byte order), but type-dependent
1210 * buffers (eg mds_body, ost_body etc) have NOT been swabbed. */
1213 CFS_INIT_LIST_HEAD(&req->rq_list);
1214 DEBUG_REQ(D_HA, req, "not queueing");
1218 /* XXX If I were a real man, these LBUGs would be sane cleanups. */
1219 /* XXX just like the request-dup code in queue_final_reply */
1220 OBD_ALLOC(saved_req, sizeof *saved_req);
1223 OBD_ALLOC(reqmsg, req->rq_reqlen);
1227 spin_lock_bh(&obd->obd_processing_task_lock);
1229 /* If we're processing the queue, we want don't want to queue this
1232 * Also, if this request has a transno less than the one we're waiting
1233 * for, we should process it now. It could (and currently always will)
1234 * be an open request for a descriptor that was opened some time ago.
1236 * Also, a resent, replayed request that has already been
1237 * handled will pass through here and be processed immediately.
1239 if (obd->obd_processing_task == cfs_curproc_pid() ||
1240 transno < obd->obd_next_recovery_transno) {
1241 /* Processing the queue right now, don't re-add. */
1242 LASSERT(list_empty(&req->rq_list));
1243 spin_unlock_bh(&obd->obd_processing_task_lock);
1244 OBD_FREE(reqmsg, req->rq_reqlen);
1245 OBD_FREE(saved_req, sizeof *saved_req);
1249 /* A resent, replayed request that is still on the queue; just drop it.
1250 The queued request will handle this. */
1251 if ((lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT|MSG_REPLAY)) ==
1252 (MSG_RESENT | MSG_REPLAY)) {
1253 DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
1254 spin_unlock_bh(&obd->obd_processing_task_lock);
1255 OBD_FREE(reqmsg, req->rq_reqlen);
1256 OBD_FREE(saved_req, sizeof *saved_req);
1260 memcpy(saved_req, req, sizeof *req);
1261 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
1263 req->rq_reqmsg = reqmsg;
1264 class_export_get(req->rq_export);
1265 CFS_INIT_LIST_HEAD(&req->rq_list);
1268 list_for_each(tmp, &obd->obd_recovery_queue) {
1269 struct ptlrpc_request *reqiter =
1270 list_entry(tmp, struct ptlrpc_request, rq_list);
1272 if (lustre_msg_get_transno(reqiter->rq_reqmsg) > transno) {
1273 list_add_tail(&req->rq_list, &reqiter->rq_list);
1280 list_add_tail(&req->rq_list, &obd->obd_recovery_queue);
1283 obd->obd_requests_queued_for_recovery++;
1285 if (obd->obd_processing_task != 0) {
1286 /* Someone else is processing this queue, we'll leave it to
1289 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1290 spin_unlock_bh(&obd->obd_processing_task_lock);
1294 /* Nobody is processing, and we know there's (at least) one to process
1295 * now, so we'll do the honours.
1297 obd->obd_processing_task = cfs_curproc_pid();
1298 spin_unlock_bh(&obd->obd_processing_task_lock);
1300 process_recovery_queue(obd);
1304 struct obd_device * target_req2obd(struct ptlrpc_request *req)
1306 return req->rq_export->exp_obd;
1309 int target_queue_final_reply(struct ptlrpc_request *req, int rc)
1311 struct obd_device *obd = target_req2obd(req);
1312 struct ptlrpc_request *saved_req;
1313 struct lustre_msg *reqmsg;
1314 int recovery_done = 0;
1316 LASSERT ((rc == 0) == (req->rq_reply_state != NULL));
1319 /* Just like ptlrpc_error, but without the sending. */
1320 rc = lustre_pack_reply(req, 1, NULL, NULL);
1321 LASSERT(rc == 0); /* XXX handle this */
1322 req->rq_type = PTL_RPC_MSG_ERR;
1325 LASSERT (!req->rq_reply_state->rs_difficult);
1326 LASSERT(list_empty(&req->rq_list));
1327 /* XXX a bit like the request-dup code in queue_recovery_request */
1328 OBD_ALLOC(saved_req, sizeof *saved_req);
1331 OBD_ALLOC(reqmsg, req->rq_reqlen);
1335 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
1337 /* Don't race cleanup */
1338 spin_lock_bh(&obd->obd_processing_task_lock);
1339 if (obd->obd_stopping) {
1340 spin_unlock_bh(&obd->obd_processing_task_lock);
1341 OBD_FREE(reqmsg, req->rq_reqlen);
1342 OBD_FREE(saved_req, sizeof *req);
1343 req->rq_status = -ENOTCONN;
1344 /* rv is ignored anyhow */
1347 ptlrpc_rs_addref(req->rq_reply_state); /* +1 ref for saved reply */
1349 req->rq_reqmsg = reqmsg;
1350 class_export_get(req->rq_export);
1351 list_add(&req->rq_list, &obd->obd_delayed_reply_queue);
1353 /* only count the first "replay over" request from each
1355 if (req->rq_export->exp_replay_needed) {
1356 --obd->obd_recoverable_clients;
1358 spin_lock(&req->rq_export->exp_lock);
1359 req->rq_export->exp_replay_needed = 0;
1360 spin_unlock(&req->rq_export->exp_lock);
1362 recovery_done = (obd->obd_recoverable_clients == 0);
1363 spin_unlock_bh(&obd->obd_processing_task_lock);
1365 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
1366 if (recovery_done) {
1367 spin_lock_bh(&obd->obd_processing_task_lock);
1368 obd->obd_recovering = obd->obd_abort_recovery = 0;
1369 target_cancel_recovery_timer(obd);
1370 spin_unlock_bh(&obd->obd_processing_task_lock);
1372 target_finish_recovery(obd);
1373 CDEBUG(D_HA, "%s: recovery complete\n",
1374 obd_uuid2str(&obd->obd_uuid));
1376 CWARN("%s: %d recoverable clients remain\n",
1377 obd->obd_name, obd->obd_recoverable_clients);
1378 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1385 target_send_reply_msg (struct ptlrpc_request *req, int rc, int fail_id)
1387 if (OBD_FAIL_CHECK(fail_id | OBD_FAIL_ONCE)) {
1388 obd_fail_loc |= OBD_FAIL_ONCE | OBD_FAILED;
1389 DEBUG_REQ(D_ERROR, req, "dropping reply");
1394 DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
1395 req->rq_status = rc;
1396 return (ptlrpc_error(req));
1398 DEBUG_REQ(D_NET, req, "sending reply");
1401 return (ptlrpc_send_reply(req, 1));
1405 target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
1408 struct ptlrpc_reply_state *rs;
1409 struct obd_device *obd;
1410 struct obd_export *exp;
1411 struct ptlrpc_service *svc;
1413 svc = req->rq_rqbd->rqbd_service;
1414 rs = req->rq_reply_state;
1415 if (rs == NULL || !rs->rs_difficult) {
1417 target_send_reply_msg (req, rc, fail_id);
1421 /* must be an export if locks saved */
1422 LASSERT (req->rq_export != NULL);
1423 /* req/reply consistent */
1424 LASSERT (rs->rs_service == svc);
1427 LASSERT (!rs->rs_scheduled);
1428 LASSERT (!rs->rs_scheduled_ever);
1429 LASSERT (!rs->rs_handled);
1430 LASSERT (!rs->rs_on_net);
1431 LASSERT (rs->rs_export == NULL);
1432 LASSERT (list_empty(&rs->rs_obd_list));
1433 LASSERT (list_empty(&rs->rs_exp_list));
1435 exp = class_export_get (req->rq_export);
1438 /* disable reply scheduling onto srv_reply_queue while I'm setting up */
1439 rs->rs_scheduled = 1;
1441 rs->rs_xid = req->rq_xid;
1442 rs->rs_transno = req->rq_transno;
1443 rs->rs_export = exp;
1445 spin_lock(&obd->obd_uncommitted_replies_lock);
1447 if (rs->rs_transno > obd->obd_last_committed) {
1448 /* not committed already */
1449 list_add_tail (&rs->rs_obd_list,
1450 &obd->obd_uncommitted_replies);
1453 spin_unlock (&obd->obd_uncommitted_replies_lock);
1454 spin_lock (&exp->exp_lock);
1456 list_add_tail (&rs->rs_exp_list, &exp->exp_outstanding_replies);
1458 spin_unlock(&exp->exp_lock);
1460 netrc = target_send_reply_msg (req, rc, fail_id);
1462 spin_lock(&svc->srv_lock);
1464 svc->srv_n_difficult_replies++;
1467 /* error sending: reply is off the net. Also we need +1
1468 * reply ref until ptlrpc_server_handle_reply() is done
1469 * with the reply state (if the send was successful, there
1470 * would have been +1 ref for the net, which
1471 * reply_out_callback leaves alone) */
1473 ptlrpc_rs_addref(rs);
1474 atomic_inc (&svc->srv_outstanding_replies);
1477 if (!rs->rs_on_net || /* some notifier */
1478 list_empty(&rs->rs_exp_list) || /* completed already */
1479 list_empty(&rs->rs_obd_list)) {
1480 list_add_tail (&rs->rs_list, &svc->srv_reply_queue);
1481 cfs_waitq_signal (&svc->srv_waitq);
1483 list_add (&rs->rs_list, &svc->srv_active_replies);
1484 rs->rs_scheduled = 0; /* allow notifier to schedule */
1487 spin_unlock(&svc->srv_lock);
1490 int target_handle_ping(struct ptlrpc_request *req)
1492 obd_ping(req->rq_export);
1493 return lustre_pack_reply(req, 1, NULL, NULL);
1496 void target_committed_to_req(struct ptlrpc_request *req)
1498 struct obd_device *obd = req->rq_export->exp_obd;
1500 if (!obd->obd_no_transno && req->rq_repmsg != NULL)
1501 lustre_msg_set_last_committed(req->rq_repmsg,
1502 obd->obd_last_committed);
1504 DEBUG_REQ(D_IOCTL, req, "not sending last_committed update");
1506 CDEBUG(D_INFO, "last_committed "LPU64", xid "LPU64"\n",
1507 obd->obd_last_committed, req->rq_xid);
1510 EXPORT_SYMBOL(target_committed_to_req);
1512 #ifdef HAVE_QUOTA_SUPPORT
1513 int target_handle_qc_callback(struct ptlrpc_request *req)
1515 struct obd_quotactl *oqctl;
1516 struct client_obd *cli = &req->rq_export->exp_obd->u.cli;
1518 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1519 lustre_swab_obd_quotactl);
1520 if (oqctl == NULL) {
1521 CERROR("Can't unpack obd_quotactl\n");
1525 cli->cl_qchk_stat = oqctl->qc_stat;
1530 int target_handle_dqacq_callback(struct ptlrpc_request *req)
1533 struct obd_device *obd = req->rq_export->exp_obd;
1534 struct obd_device *master_obd;
1535 struct lustre_quota_ctxt *qctxt;
1536 struct qunit_data *qdata;
1538 struct qunit_data_old *qdata_old;
1540 int repsize[2] = { sizeof(struct ptlrpc_body),
1541 sizeof(struct qunit_data) };
1544 rc = lustre_pack_reply(req, 2, repsize, NULL);
1546 CERROR("packing reply failed!: rc = %d\n", rc);
1549 LASSERT(req->rq_export);
1551 /* fixed for bug10707 */
1552 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_QUOTA64) &&
1553 !OBD_FAIL_CHECK(OBD_FAIL_QUOTA_QD_COUNT_32BIT)) {
1554 CDEBUG(D_QUOTA, "qd_count is 64bit!\n");
1555 rep = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1556 sizeof(struct qunit_data));
1558 qdata = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*qdata),
1561 CDEBUG(D_QUOTA, "qd_count is 32bit!\n");
1562 rep = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1563 sizeof(struct qunit_data_old));
1565 qdata_old = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*qdata_old),
1566 lustre_swab_qdata_old);
1567 qdata = lustre_quota_old_to_new(qdata_old);
1570 if (qdata == NULL) {
1571 CERROR("Can't unpack qunit_data\n");
1575 /* we use the observer */
1576 LASSERT(obd->obd_observer && obd->obd_observer->obd_observer);
1577 master_obd = obd->obd_observer->obd_observer;
1578 qctxt = &master_obd->u.obt.obt_qctxt;
1580 LASSERT(qctxt->lqc_handler);
1581 rc = qctxt->lqc_handler(master_obd, qdata,
1582 lustre_msg_get_opc(req->rq_reqmsg));
1583 if (rc && rc != -EDQUOT)
1584 CDEBUG(rc == -EBUSY ? D_QUOTA : D_ERROR,
1585 "dqacq failed! (rc:%d)\n", rc);
1587 /* the qd_count might be changed in lqc_handler */
1588 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_QUOTA64) &&
1589 !OBD_FAIL_CHECK(OBD_FAIL_QUOTA_QD_COUNT_32BIT)) {
1590 memcpy(rep,qdata,sizeof(*qdata));
1592 qdata_old = lustre_quota_new_to_old(qdata);
1593 memcpy(rep,qdata_old,sizeof(*qdata_old));
1595 req->rq_status = rc;
1596 rc = ptlrpc_reply(req);
1601 #endif /* !__KERNEL__ */
1603 #endif /* HAVE_QUOTA_SUPPORT */
1605 ldlm_mode_t lck_compat_array[] = {
1606 [LCK_EX] LCK_COMPAT_EX,
1607 [LCK_PW] LCK_COMPAT_PW,
1608 [LCK_PR] LCK_COMPAT_PR,
1609 [LCK_CW] LCK_COMPAT_CW,
1610 [LCK_CR] LCK_COMPAT_CR,
1611 [LCK_NL] LCK_COMPAT_NL,
1612 [LCK_GROUP] LCK_COMPAT_GROUP