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);
321 imp->imp_invalid = 1;
325 cli->cl_qchk_stat = CL_NOT_QUOTACHECKED;
330 class_destroy_import(imp);
338 int client_obd_cleanup(struct obd_device *obddev)
341 ldlm_put_ref(obddev->obd_force);
346 /* ->o_connect() method for client side (OSC and MDC and MGC) */
347 int client_connect_import(struct lustre_handle *dlm_handle,
348 struct obd_device *obd, struct obd_uuid *cluuid,
349 struct obd_connect_data *data)
351 struct client_obd *cli = &obd->u.cli;
352 struct obd_import *imp = cli->cl_import;
353 struct obd_export *exp;
354 struct obd_connect_data *ocd;
358 mutex_down(&cli->cl_sem);
359 rc = class_connect(dlm_handle, obd, cluuid);
363 cli->cl_conn_count++;
364 if (cli->cl_conn_count > 1)
366 exp = class_conn2export(dlm_handle);
368 if (obd->obd_namespace != NULL)
369 CERROR("already have namespace!\n");
370 obd->obd_namespace = ldlm_namespace_new(obd->obd_name,
371 LDLM_NAMESPACE_CLIENT);
372 if (obd->obd_namespace == NULL)
373 GOTO(out_disco, rc = -ENOMEM);
375 imp->imp_dlm_handle = *dlm_handle;
376 rc = ptlrpc_init_import(imp);
380 ocd = &imp->imp_connect_data;
383 imp->imp_connect_flags_orig = data->ocd_connect_flags;
386 rc = ptlrpc_connect_import(imp, NULL);
388 LASSERT (imp->imp_state == LUSTRE_IMP_DISCON);
391 LASSERT(exp->exp_connection);
394 LASSERT((ocd->ocd_connect_flags & data->ocd_connect_flags) ==
395 ocd->ocd_connect_flags);
396 data->ocd_connect_flags = ocd->ocd_connect_flags;
399 ptlrpc_pinger_add_import(imp);
404 ldlm_namespace_free(obd->obd_namespace, 0);
405 obd->obd_namespace = NULL;
407 cli->cl_conn_count--;
408 class_disconnect(exp);
410 class_export_put(exp);
413 mutex_up(&cli->cl_sem);
417 int client_disconnect_export(struct obd_export *exp)
419 struct obd_device *obd = class_exp2obd(exp);
420 struct client_obd *cli;
421 struct obd_import *imp;
426 CERROR("invalid export for disconnect: exp %p cookie "LPX64"\n",
427 exp, exp ? exp->exp_handle.h_cookie : -1);
432 imp = cli->cl_import;
434 mutex_down(&cli->cl_sem);
435 if (!cli->cl_conn_count) {
436 CERROR("disconnecting disconnected device (%s)\n",
438 GOTO(out_sem, rc = -EINVAL);
441 cli->cl_conn_count--;
442 if (cli->cl_conn_count)
443 GOTO(out_no_disconnect, rc = 0);
445 /* Mark import deactivated now, so we don't try to reconnect if any
446 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
447 * fully deactivate the import, or that would drop all requests. */
448 imp->imp_deactive = 1;
450 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
451 * delete it regardless. (It's safe to delete an import that was
453 (void)ptlrpc_pinger_del_import(imp);
455 if (obd->obd_namespace != NULL) {
456 /* obd_no_recov == local only */
457 ldlm_cli_cancel_unused(obd->obd_namespace, NULL,
458 obd->obd_no_recov ? LDLM_FL_LOCAL_ONLY:0,
460 ldlm_namespace_free(obd->obd_namespace, obd->obd_no_recov);
461 obd->obd_namespace = NULL;
464 /* Yeah, obd_no_recov also (mainly) means "forced shutdown". */
465 if (!obd->obd_no_recov)
466 rc = ptlrpc_disconnect_import(imp, 0);
468 ptlrpc_invalidate_import(imp);
469 ptlrpc_free_rq_pool(imp->imp_rq_pool);
470 class_destroy_import(imp);
471 cli->cl_import = NULL;
475 err = class_disconnect(exp);
479 mutex_up(&cli->cl_sem);
483 /* --------------------------------------------------------------------------
484 * from old lib/target.c
485 * -------------------------------------------------------------------------- */
487 int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
488 struct obd_uuid *cluuid)
491 if (exp->exp_connection && exp->exp_imp_reverse) {
492 struct lustre_handle *hdl;
493 hdl = &exp->exp_imp_reverse->imp_remote_handle;
494 /* Might be a re-connect after a partition. */
495 if (!memcmp(&conn->cookie, &hdl->cookie, sizeof conn->cookie)) {
496 CWARN("%s: %s reconnecting\n", exp->exp_obd->obd_name,
498 conn->cookie = exp->exp_handle.h_cookie;
499 /* target_handle_connect() treats EALREADY and
500 * -EALREADY differently. EALREADY means we are
501 * doing a valid reconnect from the same client. */
504 CERROR("%s reconnecting from %s, "
505 "handle mismatch (ours "LPX64", theirs "
506 LPX64")\n", cluuid->uuid,
507 exp->exp_connection->c_remote_uuid.uuid,
508 hdl->cookie, conn->cookie);
509 memset(conn, 0, sizeof *conn);
510 /* target_handle_connect() treats EALREADY and
511 * -EALREADY differently. -EALREADY is an error
512 * (same UUID, different handle). */
517 conn->cookie = exp->exp_handle.h_cookie;
518 CDEBUG(D_HA, "connect export for UUID '%s' at %p, cookie "LPX64"\n",
519 cluuid->uuid, exp, conn->cookie);
523 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
526 struct obd_export *exp = cb_data;
528 CDEBUG(D_HA, "%s: committing for initial connect of %s\n",
529 obd->obd_name, exp->exp_client_uuid.uuid);
530 exp->exp_need_sync = 0;
532 EXPORT_SYMBOL(target_client_add_cb);
534 int target_handle_connect(struct ptlrpc_request *req, svc_handler_t handler)
536 struct obd_device *target, *targref = NULL;
537 struct obd_export *export = NULL;
538 struct obd_import *revimp;
539 struct lustre_handle conn;
540 struct obd_uuid tgtuuid;
541 struct obd_uuid cluuid;
542 struct obd_uuid remote_uuid;
544 int rc = 0, abort_recovery;
545 struct obd_connect_data *data;
546 int size[2] = { sizeof(struct ptlrpc_body), sizeof(*data) };
549 OBD_RACE(OBD_FAIL_TGT_CONN_RACE);
551 LASSERT_REQSWAB(req, REQ_REC_OFF);
552 str = lustre_msg_string(req->rq_reqmsg, REQ_REC_OFF, sizeof(tgtuuid)-1);
554 DEBUG_REQ(D_ERROR, req, "bad target UUID for connect\n");
555 GOTO(out, rc = -EINVAL);
558 obd_str2uuid (&tgtuuid, str);
559 target = class_uuid2obd(&tgtuuid);
561 /* old (pre 1.6) lustre_process_log tries to connect to mdsname
562 (eg. mdsA) instead of uuid. */
564 snprintf((char *)tgtuuid.uuid, sizeof(tgtuuid), "%s_UUID", str);
565 target = class_uuid2obd(&tgtuuid);
568 target = class_name2obd(str);
571 if (!target || target->obd_stopping || !target->obd_set_up) {
572 LCONSOLE_ERROR("UUID '%s' is not available "
573 " for connect (%s)\n", str,
574 !target ? "no target" :
575 (target->obd_stopping ? "stopping" :
577 GOTO(out, rc = -ENODEV);
580 if (target->obd_no_conn) {
581 LCONSOLE_WARN("%s: temporarily refusing client connection "
582 "from %s\n", target->obd_name,
583 libcfs_nid2str(req->rq_peer.nid));
584 GOTO(out, rc = -EAGAIN);
587 /* Make sure the target isn't cleaned up while we're here. Yes,
588 there's still a race between the above check and our incref here.
589 Really, class_uuid2obd should take the ref. */
590 targref = class_incref(target);
592 LASSERT_REQSWAB(req, REQ_REC_OFF + 1);
593 str = lustre_msg_string(req->rq_reqmsg, REQ_REC_OFF + 1,
596 DEBUG_REQ(D_ERROR, req, "bad client UUID for connect\n");
597 GOTO(out, rc = -EINVAL);
600 obd_str2uuid (&cluuid, str);
602 /* XXX extract a nettype and format accordingly */
603 switch (sizeof(lnet_nid_t)) {
604 /* NB the casts only avoid compiler warnings */
606 snprintf(remote_uuid.uuid, sizeof remote_uuid,
607 "NET_"LPX64"_UUID", (__u64)req->rq_peer.nid);
610 snprintf(remote_uuid.uuid, sizeof remote_uuid,
611 "NET_%x_UUID", (__u32)req->rq_peer.nid);
617 spin_lock_bh(&target->obd_processing_task_lock);
618 abort_recovery = target->obd_abort_recovery;
619 spin_unlock_bh(&target->obd_processing_task_lock);
621 target_abort_recovery(target);
623 tmp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, sizeof conn);
625 GOTO(out, rc = -EPROTO);
627 memcpy(&conn, tmp, sizeof conn);
629 data = lustre_swab_reqbuf(req, REQ_REC_OFF + 3, sizeof(*data),
630 lustre_swab_connect);
631 rc = lustre_pack_reply(req, 2, size, NULL);
635 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
637 DEBUG_REQ(D_WARNING, req, "Refusing old (unversioned) "
638 "libclient connection attempt\n");
639 GOTO(out, rc = -EPROTO);
640 } else if (data->ocd_version < LUSTRE_VERSION_CODE -
641 LUSTRE_VERSION_ALLOWED_OFFSET ||
642 data->ocd_version > LUSTRE_VERSION_CODE +
643 LUSTRE_VERSION_ALLOWED_OFFSET) {
644 DEBUG_REQ(D_WARNING, req, "Refusing %s (%d.%d.%d.%d) "
645 "libclient connection attempt\n",
646 data->ocd_version < LUSTRE_VERSION_CODE ?
648 OBD_OCD_VERSION_MAJOR(data->ocd_version),
649 OBD_OCD_VERSION_MINOR(data->ocd_version),
650 OBD_OCD_VERSION_PATCH(data->ocd_version),
651 OBD_OCD_VERSION_FIX(data->ocd_version));
652 data = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
653 offsetof(typeof(*data),
655 sizeof(data->ocd_version));
657 data->ocd_connect_flags = OBD_CONNECT_VERSION;
658 data->ocd_version = LUSTRE_VERSION_CODE;
660 GOTO(out, rc = -EPROTO);
664 /* lctl gets a backstage, all-access pass. */
665 if (obd_uuid_equals(&cluuid, &target->obd_uuid))
666 goto dont_check_exports;
668 spin_lock(&target->obd_dev_lock);
669 export = lustre_hash_get_object_by_key(target->obd_uuid_hash_body, &cluuid);
671 if (export != NULL && export->exp_connecting) { /* bug 9635, et. al. */
672 CWARN("%s: exp %p already connecting\n",
673 export->exp_obd->obd_name, export);
674 class_export_put(export);
677 } else if (export != NULL) {
678 /* make darn sure this is coming from the same peer
679 * if the UUIDs matched */
680 if ((export->exp_connection != NULL) &&
681 (strcmp(libcfs_nid2str(req->rq_peer.nid),
682 libcfs_nid2str(export->exp_connection->c_peer.nid)))) {
683 CWARN("%s: cookie %s seen on new NID %s when "
684 "existing NID %s is already connected\n",
685 target->obd_name, cluuid.uuid,
686 libcfs_nid2str(req->rq_peer.nid),
687 libcfs_nid2str(export->exp_connection->c_peer.nid));
688 class_export_put(export);
692 export->exp_connecting = 1;
693 class_export_put(export);
694 spin_unlock(&target->obd_dev_lock);
695 LASSERT(export->exp_obd == target);
696 rc = target_handle_reconnect(&conn, export, &cluuid);
700 /* If we found an export, we already unlocked. */
702 spin_unlock(&target->obd_dev_lock);
703 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_CONNECT, 2 * obd_timeout);
704 } else if (req->rq_export == NULL &&
705 atomic_read(&export->exp_rpc_count) > 0) {
706 CWARN("%s: refuse connection from %s/%s to 0x%p/%d\n",
707 target->obd_name, cluuid.uuid,
708 libcfs_nid2str(req->rq_peer.nid),
709 export, atomic_read(&export->exp_refcount));
710 GOTO(out, rc = -EBUSY);
711 } else if (req->rq_export != NULL &&
712 atomic_read(&export->exp_rpc_count) > 1) {
713 CWARN("%s: refuse reconnection from %s@%s to 0x%p/%d\n",
714 target->obd_name, cluuid.uuid,
715 libcfs_nid2str(req->rq_peer.nid),
716 export, atomic_read(&export->exp_rpc_count));
717 GOTO(out, rc = -EBUSY);
718 } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1) {
719 CERROR("%s: NID %s (%s) reconnected with 1 conn_cnt; "
720 "cookies not random?\n", target->obd_name,
721 libcfs_nid2str(req->rq_peer.nid), cluuid.uuid);
722 GOTO(out, rc = -EALREADY);
724 OBD_FAIL_TIMEOUT(OBD_FAIL_TGT_DELAY_RECONNECT, 2 * obd_timeout);
727 /* We want to handle EALREADY but *not* -EALREADY from
728 * target_handle_reconnect(), return reconnection state in a flag */
729 if (rc == EALREADY) {
730 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
736 /* Tell the client if we're in recovery. */
737 /* If this is the first client, start the recovery timer */
738 if (target->obd_recovering) {
739 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
740 target_start_recovery_timer(target, handler);
743 /* Tell the client if we support replayable requests */
744 if (target->obd_replayable)
745 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_REPLAYABLE);
747 if (export == NULL) {
748 if (target->obd_recovering) {
749 CERROR("%s: denying connection for new client %s (%s): "
750 "%d clients in recovery for %lds\n",
752 libcfs_nid2str(req->rq_peer.nid), cluuid.uuid,
753 target->obd_recoverable_clients,
754 cfs_duration_sec(cfs_time_sub(cfs_timer_deadline(&target->obd_recovery_timer),
755 cfs_time_current())));
759 rc = obd_connect(&conn, target, &cluuid, data);
762 rc = obd_reconnect(export, target, &cluuid, data);
768 /* Return only the parts of obd_connect_data that we understand, so the
769 * client knows that we don't understand the rest. */
771 memcpy(lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
773 data, sizeof(*data));
775 /* If all else goes well, this is our RPC return code. */
778 lustre_msg_set_handle(req->rq_repmsg, &conn);
780 /* ownership of this export ref transfers to the request AFTER we
781 * drop any previous reference the request had, but we don't want
782 * that to go to zero before we get our new export reference. */
783 export = class_conn2export(&conn);
785 DEBUG_REQ(D_ERROR, req, "Missing export!\n");
786 GOTO(out, rc = -ENODEV);
789 /* If the client and the server are the same node, we will already
790 * have an export that really points to the client's DLM export,
791 * because we have a shared handles table.
793 * XXX this will go away when shaver stops sending the "connect" handle
794 * in the real "remote handle" field of the request --phik 24 Apr 2003
796 if (req->rq_export != NULL)
797 class_export_put(req->rq_export);
799 req->rq_export = export;
801 spin_lock(&export->exp_lock);
802 if (export->exp_conn_cnt >= lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
803 CERROR("%s: %s already connected at higher conn_cnt: %d > %d\n",
804 cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
805 export->exp_conn_cnt,
806 lustre_msg_get_conn_cnt(req->rq_reqmsg));
808 spin_unlock(&export->exp_lock);
809 GOTO(out, rc = -EALREADY);
811 export->exp_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
812 spin_unlock(&export->exp_lock);
814 /* request from liblustre? Don't evict it for not pinging. */
815 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_LIBCLIENT) {
816 export->exp_libclient = 1;
817 spin_lock(&target->obd_dev_lock);
818 list_del_init(&export->exp_obd_chain_timed);
819 spin_unlock(&target->obd_dev_lock);
822 if (export->exp_connection != NULL)
823 ptlrpc_put_connection(export->exp_connection);
824 export->exp_connection = ptlrpc_get_connection(req->rq_peer,
828 spin_lock(&target->obd_dev_lock);
829 lustre_hash_additem(export->exp_obd->obd_nid_hash_body,
830 &export->exp_connection->c_peer.nid,
831 &export->exp_nid_hash);
832 spin_unlock(&target->obd_dev_lock);
834 if (lustre_msg_get_op_flags(req->rq_repmsg) & MSG_CONNECT_RECONNECT)
837 if (target->obd_recovering)
838 target->obd_connected_clients++;
841 lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, sizeof conn),
844 if (export->exp_imp_reverse != NULL)
845 class_destroy_import(export->exp_imp_reverse);
846 revimp = export->exp_imp_reverse = class_new_import(target);
847 revimp->imp_connection = ptlrpc_connection_addref(export->exp_connection);
848 revimp->imp_client = &export->exp_obd->obd_ldlm_client;
849 revimp->imp_remote_handle = conn;
850 revimp->imp_dlm_fake = 1;
851 revimp->imp_state = LUSTRE_IMP_FULL;
853 if (lustre_msg_get_op_flags(req->rq_reqmsg) & MSG_CONNECT_NEXT_VER) {
854 revimp->imp_msg_magic = LUSTRE_MSG_MAGIC_V2;
855 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_NEXT_VER);
858 class_import_put(revimp);
861 export->exp_connecting = 0;
863 class_decref(targref);
869 int target_handle_disconnect(struct ptlrpc_request *req)
874 rc = lustre_pack_reply(req, 1, NULL, NULL);
878 /* keep the rq_export around so we can send the reply */
879 req->rq_status = obd_disconnect(class_export_get(req->rq_export));
883 void target_destroy_export(struct obd_export *exp)
885 /* exports created from last_rcvd data, and "fake"
886 exports created by lctl don't have an import */
887 if (exp->exp_imp_reverse != NULL)
888 class_destroy_import(exp->exp_imp_reverse);
890 /* We cancel locks at disconnect time, but this will catch any locks
891 * granted in a race with recovery-induced disconnect. */
892 if (exp->exp_obd->obd_namespace != NULL)
893 ldlm_cancel_locks_for_export(exp);
901 static void target_release_saved_req(struct ptlrpc_request *req)
903 if (req->rq_reply_state != NULL) {
904 ptlrpc_rs_decref(req->rq_reply_state);
905 /* req->rq_reply_state = NULL; */
908 class_export_put(req->rq_export);
909 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
910 OBD_FREE(req, sizeof *req);
913 static void target_finish_recovery(struct obd_device *obd)
915 struct list_head *tmp, *n;
917 LCONSOLE_INFO("%s: sending delayed replies to recovered clients\n",
920 ldlm_reprocess_all_ns(obd->obd_namespace);
922 /* when recovery finished, cleanup orphans on mds and ost */
923 if (OBT(obd) && OBP(obd, postrecov)) {
924 int rc = OBP(obd, postrecov)(obd);
925 LCONSOLE_WARN("%s: recovery %s: rc %d\n", obd->obd_name,
926 rc < 0 ? "failed" : "complete", rc);
929 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
930 struct ptlrpc_request *req;
931 req = list_entry(tmp, struct ptlrpc_request, rq_list);
932 list_del(&req->rq_list);
933 DEBUG_REQ(D_HA, req, "delayed:");
935 target_release_saved_req(req);
937 obd->obd_recovery_end = CURRENT_SECONDS;
940 static void abort_recovery_queue(struct obd_device *obd)
942 struct ptlrpc_request *req;
943 struct list_head *tmp, *n;
946 list_for_each_safe(tmp, n, &obd->obd_recovery_queue) {
947 req = list_entry(tmp, struct ptlrpc_request, rq_list);
948 list_del(&req->rq_list);
949 DEBUG_REQ(D_ERROR, req, "aborted:");
950 req->rq_status = -ENOTCONN;
951 req->rq_type = PTL_RPC_MSG_ERR;
952 rc = lustre_pack_reply(req, 1, NULL, NULL);
956 DEBUG_REQ(D_ERROR, req,
957 "packing failed for abort-reply; skipping");
959 target_release_saved_req(req);
963 /* Called from a cleanup function if the device is being cleaned up
964 forcefully. The exports should all have been disconnected already,
965 the only thing left to do is
966 - clear the recovery flags
968 - free queued requests and replies, but don't send replies
969 Because the obd_stopping flag is set, no new requests should be received.
972 void target_cleanup_recovery(struct obd_device *obd)
974 struct list_head *tmp, *n;
975 struct ptlrpc_request *req;
978 LASSERT(obd->obd_stopping);
980 spin_lock_bh(&obd->obd_processing_task_lock);
981 if (!obd->obd_recovering) {
982 spin_unlock_bh(&obd->obd_processing_task_lock);
986 obd->obd_recovering = obd->obd_abort_recovery = 0;
987 target_cancel_recovery_timer(obd);
988 spin_unlock_bh(&obd->obd_processing_task_lock);
990 list_for_each_safe(tmp, n, &obd->obd_delayed_reply_queue) {
991 req = list_entry(tmp, struct ptlrpc_request, rq_list);
992 list_del(&req->rq_list);
993 target_release_saved_req(req);
996 list_for_each_safe(tmp, n, &obd->obd_recovery_queue) {
997 req = list_entry(tmp, struct ptlrpc_request, rq_list);
998 list_del(&req->rq_list);
999 target_release_saved_req(req);
1004 void target_abort_recovery(void *data)
1006 struct obd_device *obd = data;
1009 spin_lock_bh(&obd->obd_processing_task_lock);
1010 if (!obd->obd_recovering) {
1011 spin_unlock_bh(&obd->obd_processing_task_lock);
1015 obd->obd_recovering = obd->obd_abort_recovery = 0;
1016 obd->obd_recoverable_clients = 0;
1017 target_cancel_recovery_timer(obd);
1018 spin_unlock_bh(&obd->obd_processing_task_lock);
1020 LCONSOLE_WARN("%s: recovery period over; disconnecting unfinished "
1021 "clients.\n", obd->obd_name);
1022 class_disconnect_stale_exports(obd);
1023 abort_recovery_queue(obd);
1025 target_finish_recovery(obd);
1026 CDEBUG(D_HA, "%s: recovery complete\n", obd_uuid2str(&obd->obd_uuid));
1030 static void target_recovery_expired(unsigned long castmeharder)
1032 struct obd_device *obd = (struct obd_device *)castmeharder;
1033 CERROR("%s: recovery timed out, aborting\n", obd->obd_name);
1034 spin_lock_bh(&obd->obd_processing_task_lock);
1035 if (obd->obd_recovering)
1036 obd->obd_abort_recovery = 1;
1037 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1038 spin_unlock_bh(&obd->obd_processing_task_lock);
1042 /* obd_processing_task_lock should be held */
1043 void target_cancel_recovery_timer(struct obd_device *obd)
1045 CDEBUG(D_HA, "%s: cancel recovery timer\n", obd->obd_name);
1046 cfs_timer_disarm(&obd->obd_recovery_timer);
1049 static void reset_recovery_timer(struct obd_device *obd)
1051 spin_lock_bh(&obd->obd_processing_task_lock);
1052 if (!obd->obd_recovering) {
1053 spin_unlock_bh(&obd->obd_processing_task_lock);
1056 cfs_timer_arm(&obd->obd_recovery_timer,
1057 cfs_time_shift(OBD_RECOVERY_TIMEOUT));
1058 spin_unlock_bh(&obd->obd_processing_task_lock);
1059 CDEBUG(D_HA, "%s: timer will expire in %u seconds\n", obd->obd_name,
1060 OBD_RECOVERY_TIMEOUT);
1061 /* Only used for lprocfs_status */
1062 obd->obd_recovery_end = CURRENT_SECONDS + OBD_RECOVERY_TIMEOUT;
1066 /* Only start it the first time called */
1067 void target_start_recovery_timer(struct obd_device *obd, svc_handler_t handler)
1069 spin_lock_bh(&obd->obd_processing_task_lock);
1070 if (obd->obd_recovery_handler) {
1071 spin_unlock_bh(&obd->obd_processing_task_lock);
1074 CWARN("%s: starting recovery timer (%us)\n", obd->obd_name,
1075 OBD_RECOVERY_TIMEOUT);
1076 obd->obd_recovery_handler = handler;
1077 cfs_timer_init(&obd->obd_recovery_timer, target_recovery_expired, obd);
1078 spin_unlock_bh(&obd->obd_processing_task_lock);
1080 reset_recovery_timer(obd);
1083 static int check_for_next_transno(struct obd_device *obd)
1085 struct ptlrpc_request *req;
1086 int wake_up = 0, connected, completed, queue_len, max;
1087 __u64 next_transno, req_transno;
1089 spin_lock_bh(&obd->obd_processing_task_lock);
1090 req = list_entry(obd->obd_recovery_queue.next,
1091 struct ptlrpc_request, rq_list);
1092 max = obd->obd_max_recoverable_clients;
1093 req_transno = lustre_msg_get_transno(req->rq_reqmsg);
1094 connected = obd->obd_connected_clients;
1095 completed = max - obd->obd_recoverable_clients;
1096 queue_len = obd->obd_requests_queued_for_recovery;
1097 next_transno = obd->obd_next_recovery_transno;
1099 CDEBUG(D_HA,"max: %d, connected: %d, completed: %d, queue_len: %d, "
1100 "req_transno: "LPU64", next_transno: "LPU64"\n",
1101 max, connected, completed, queue_len, req_transno, next_transno);
1102 if (obd->obd_abort_recovery) {
1103 CDEBUG(D_HA, "waking for aborted recovery\n");
1105 } else if (!obd->obd_recovering) {
1106 CDEBUG(D_HA, "waking for completed recovery (?)\n");
1108 } else if (req_transno == next_transno) {
1109 CDEBUG(D_HA, "waking for next ("LPD64")\n", next_transno);
1111 } else if (queue_len + completed == max) {
1113 "waking for skipped transno (skip: "LPD64
1114 ", ql: %d, comp: %d, conn: %d, next: "LPD64")\n",
1115 next_transno, queue_len, completed, max, req_transno);
1116 obd->obd_next_recovery_transno = req_transno;
1119 spin_unlock_bh(&obd->obd_processing_task_lock);
1120 LASSERT(lustre_msg_get_transno(req->rq_reqmsg) >= next_transno);
1124 static void process_recovery_queue(struct obd_device *obd)
1126 struct ptlrpc_request *req;
1127 int abort_recovery = 0;
1128 struct l_wait_info lwi = { 0 };
1132 spin_lock_bh(&obd->obd_processing_task_lock);
1133 LASSERT(obd->obd_processing_task == cfs_curproc_pid());
1134 req = list_entry(obd->obd_recovery_queue.next,
1135 struct ptlrpc_request, rq_list);
1137 if (lustre_msg_get_transno(req->rq_reqmsg) !=
1138 obd->obd_next_recovery_transno) {
1139 spin_unlock_bh(&obd->obd_processing_task_lock);
1140 CDEBUG(D_HA, "Waiting for transno "LPD64" (1st is "
1142 obd->obd_next_recovery_transno,
1143 lustre_msg_get_transno(req->rq_reqmsg));
1144 l_wait_event(obd->obd_next_transno_waitq,
1145 check_for_next_transno(obd), &lwi);
1146 spin_lock_bh(&obd->obd_processing_task_lock);
1147 abort_recovery = obd->obd_abort_recovery;
1148 spin_unlock_bh(&obd->obd_processing_task_lock);
1149 if (abort_recovery) {
1150 target_abort_recovery(obd);
1155 list_del_init(&req->rq_list);
1156 obd->obd_requests_queued_for_recovery--;
1157 spin_unlock_bh(&obd->obd_processing_task_lock);
1159 DEBUG_REQ(D_HA, req, "processing: ");
1160 (void)obd->obd_recovery_handler(req);
1161 obd->obd_replayed_requests++;
1162 reset_recovery_timer(obd);
1163 /* bug 1580: decide how to properly sync() in recovery */
1164 //mds_fsync_super(obd->u.obt.obt_sb);
1165 class_export_put(req->rq_export);
1166 if (req->rq_reply_state != NULL) {
1167 ptlrpc_rs_decref(req->rq_reply_state);
1168 /* req->rq_reply_state = NULL; */
1170 OBD_FREE(req->rq_reqmsg, req->rq_reqlen);
1171 OBD_FREE(req, sizeof *req);
1172 spin_lock_bh(&obd->obd_processing_task_lock);
1173 obd->obd_next_recovery_transno++;
1174 if (list_empty(&obd->obd_recovery_queue)) {
1175 obd->obd_processing_task = 0;
1176 spin_unlock_bh(&obd->obd_processing_task_lock);
1179 spin_unlock_bh(&obd->obd_processing_task_lock);
1184 int target_queue_recovery_request(struct ptlrpc_request *req,
1185 struct obd_device *obd)
1187 struct list_head *tmp;
1189 __u64 transno = lustre_msg_get_transno(req->rq_reqmsg);
1190 struct ptlrpc_request *saved_req;
1191 struct lustre_msg *reqmsg;
1193 /* CAVEAT EMPTOR: The incoming request message has been swabbed
1194 * (i.e. buflens etc are in my own byte order), but type-dependent
1195 * buffers (eg mds_body, ost_body etc) have NOT been swabbed. */
1198 CFS_INIT_LIST_HEAD(&req->rq_list);
1199 DEBUG_REQ(D_HA, req, "not queueing");
1203 /* XXX If I were a real man, these LBUGs would be sane cleanups. */
1204 /* XXX just like the request-dup code in queue_final_reply */
1205 OBD_ALLOC(saved_req, sizeof *saved_req);
1208 OBD_ALLOC(reqmsg, req->rq_reqlen);
1212 spin_lock_bh(&obd->obd_processing_task_lock);
1214 /* If we're processing the queue, we want don't want to queue this
1217 * Also, if this request has a transno less than the one we're waiting
1218 * for, we should process it now. It could (and currently always will)
1219 * be an open request for a descriptor that was opened some time ago.
1221 * Also, a resent, replayed request that has already been
1222 * handled will pass through here and be processed immediately.
1224 if (obd->obd_processing_task == cfs_curproc_pid() ||
1225 transno < obd->obd_next_recovery_transno) {
1226 /* Processing the queue right now, don't re-add. */
1227 LASSERT(list_empty(&req->rq_list));
1228 spin_unlock_bh(&obd->obd_processing_task_lock);
1229 OBD_FREE(reqmsg, req->rq_reqlen);
1230 OBD_FREE(saved_req, sizeof *saved_req);
1234 /* A resent, replayed request that is still on the queue; just drop it.
1235 The queued request will handle this. */
1236 if ((lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT|MSG_REPLAY)) ==
1237 (MSG_RESENT | MSG_REPLAY)) {
1238 DEBUG_REQ(D_ERROR, req, "dropping resent queued req");
1239 spin_unlock_bh(&obd->obd_processing_task_lock);
1240 OBD_FREE(reqmsg, req->rq_reqlen);
1241 OBD_FREE(saved_req, sizeof *saved_req);
1245 memcpy(saved_req, req, sizeof *req);
1246 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
1248 req->rq_reqmsg = reqmsg;
1249 class_export_get(req->rq_export);
1250 CFS_INIT_LIST_HEAD(&req->rq_list);
1253 list_for_each(tmp, &obd->obd_recovery_queue) {
1254 struct ptlrpc_request *reqiter =
1255 list_entry(tmp, struct ptlrpc_request, rq_list);
1257 if (lustre_msg_get_transno(reqiter->rq_reqmsg) > transno) {
1258 list_add_tail(&req->rq_list, &reqiter->rq_list);
1265 list_add_tail(&req->rq_list, &obd->obd_recovery_queue);
1268 obd->obd_requests_queued_for_recovery++;
1270 if (obd->obd_processing_task != 0) {
1271 /* Someone else is processing this queue, we'll leave it to
1274 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1275 spin_unlock_bh(&obd->obd_processing_task_lock);
1279 /* Nobody is processing, and we know there's (at least) one to process
1280 * now, so we'll do the honours.
1282 obd->obd_processing_task = cfs_curproc_pid();
1283 spin_unlock_bh(&obd->obd_processing_task_lock);
1285 process_recovery_queue(obd);
1289 struct obd_device * target_req2obd(struct ptlrpc_request *req)
1291 return req->rq_export->exp_obd;
1294 int target_queue_final_reply(struct ptlrpc_request *req, int rc)
1296 struct obd_device *obd = target_req2obd(req);
1297 struct ptlrpc_request *saved_req;
1298 struct lustre_msg *reqmsg;
1299 int recovery_done = 0;
1301 LASSERT ((rc == 0) == (req->rq_reply_state != NULL));
1304 /* Just like ptlrpc_error, but without the sending. */
1305 rc = lustre_pack_reply(req, 1, NULL, NULL);
1306 LASSERT(rc == 0); /* XXX handle this */
1307 req->rq_type = PTL_RPC_MSG_ERR;
1310 LASSERT (!req->rq_reply_state->rs_difficult);
1311 LASSERT(list_empty(&req->rq_list));
1312 /* XXX a bit like the request-dup code in queue_recovery_request */
1313 OBD_ALLOC(saved_req, sizeof *saved_req);
1316 OBD_ALLOC(reqmsg, req->rq_reqlen);
1320 memcpy(reqmsg, req->rq_reqmsg, req->rq_reqlen);
1322 /* Don't race cleanup */
1323 spin_lock_bh(&obd->obd_processing_task_lock);
1324 if (obd->obd_stopping) {
1325 spin_unlock_bh(&obd->obd_processing_task_lock);
1326 OBD_FREE(reqmsg, req->rq_reqlen);
1327 OBD_FREE(saved_req, sizeof *req);
1328 req->rq_status = -ENOTCONN;
1329 /* rv is ignored anyhow */
1332 ptlrpc_rs_addref(req->rq_reply_state); /* +1 ref for saved reply */
1334 req->rq_reqmsg = reqmsg;
1335 class_export_get(req->rq_export);
1336 list_add(&req->rq_list, &obd->obd_delayed_reply_queue);
1338 /* only count the first "replay over" request from each
1340 if (req->rq_export->exp_replay_needed) {
1341 --obd->obd_recoverable_clients;
1342 req->rq_export->exp_replay_needed = 0;
1344 recovery_done = (obd->obd_recoverable_clients == 0);
1345 spin_unlock_bh(&obd->obd_processing_task_lock);
1347 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
1348 if (recovery_done) {
1349 spin_lock_bh(&obd->obd_processing_task_lock);
1350 obd->obd_recovering = obd->obd_abort_recovery = 0;
1351 target_cancel_recovery_timer(obd);
1352 spin_unlock_bh(&obd->obd_processing_task_lock);
1354 target_finish_recovery(obd);
1355 CDEBUG(D_HA, "%s: recovery complete\n",
1356 obd_uuid2str(&obd->obd_uuid));
1358 CWARN("%s: %d recoverable clients remain\n",
1359 obd->obd_name, obd->obd_recoverable_clients);
1360 cfs_waitq_signal(&obd->obd_next_transno_waitq);
1367 target_send_reply_msg (struct ptlrpc_request *req, int rc, int fail_id)
1369 if (OBD_FAIL_CHECK(fail_id | OBD_FAIL_ONCE)) {
1370 obd_fail_loc |= OBD_FAIL_ONCE | OBD_FAILED;
1371 DEBUG_REQ(D_ERROR, req, "dropping reply");
1376 DEBUG_REQ(D_ERROR, req, "processing error (%d)", rc);
1377 req->rq_status = rc;
1378 return (ptlrpc_error(req));
1380 DEBUG_REQ(D_NET, req, "sending reply");
1383 return (ptlrpc_send_reply(req, 1));
1387 target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
1390 struct ptlrpc_reply_state *rs;
1391 struct obd_device *obd;
1392 struct obd_export *exp;
1393 struct ptlrpc_service *svc;
1395 svc = req->rq_rqbd->rqbd_service;
1396 rs = req->rq_reply_state;
1397 if (rs == NULL || !rs->rs_difficult) {
1399 target_send_reply_msg (req, rc, fail_id);
1403 /* must be an export if locks saved */
1404 LASSERT (req->rq_export != NULL);
1405 /* req/reply consistent */
1406 LASSERT (rs->rs_service == svc);
1409 LASSERT (!rs->rs_scheduled);
1410 LASSERT (!rs->rs_scheduled_ever);
1411 LASSERT (!rs->rs_handled);
1412 LASSERT (!rs->rs_on_net);
1413 LASSERT (rs->rs_export == NULL);
1414 LASSERT (list_empty(&rs->rs_obd_list));
1415 LASSERT (list_empty(&rs->rs_exp_list));
1417 exp = class_export_get (req->rq_export);
1420 /* disable reply scheduling onto srv_reply_queue while I'm setting up */
1421 rs->rs_scheduled = 1;
1423 rs->rs_xid = req->rq_xid;
1424 rs->rs_transno = req->rq_transno;
1425 rs->rs_export = exp;
1427 spin_lock(&obd->obd_uncommitted_replies_lock);
1429 if (rs->rs_transno > obd->obd_last_committed) {
1430 /* not committed already */
1431 list_add_tail (&rs->rs_obd_list,
1432 &obd->obd_uncommitted_replies);
1435 spin_unlock (&obd->obd_uncommitted_replies_lock);
1436 spin_lock (&exp->exp_lock);
1438 list_add_tail (&rs->rs_exp_list, &exp->exp_outstanding_replies);
1440 spin_unlock(&exp->exp_lock);
1442 netrc = target_send_reply_msg (req, rc, fail_id);
1444 spin_lock(&svc->srv_lock);
1446 svc->srv_n_difficult_replies++;
1449 /* error sending: reply is off the net. Also we need +1
1450 * reply ref until ptlrpc_server_handle_reply() is done
1451 * with the reply state (if the send was successful, there
1452 * would have been +1 ref for the net, which
1453 * reply_out_callback leaves alone) */
1455 ptlrpc_rs_addref(rs);
1456 atomic_inc (&svc->srv_outstanding_replies);
1459 if (!rs->rs_on_net || /* some notifier */
1460 list_empty(&rs->rs_exp_list) || /* completed already */
1461 list_empty(&rs->rs_obd_list)) {
1462 list_add_tail (&rs->rs_list, &svc->srv_reply_queue);
1463 cfs_waitq_signal (&svc->srv_waitq);
1465 list_add (&rs->rs_list, &svc->srv_active_replies);
1466 rs->rs_scheduled = 0; /* allow notifier to schedule */
1469 spin_unlock(&svc->srv_lock);
1472 int target_handle_ping(struct ptlrpc_request *req)
1474 obd_ping(req->rq_export);
1475 return lustre_pack_reply(req, 1, NULL, NULL);
1478 void target_committed_to_req(struct ptlrpc_request *req)
1480 struct obd_device *obd = req->rq_export->exp_obd;
1482 if (!obd->obd_no_transno && req->rq_repmsg != NULL)
1483 lustre_msg_set_last_committed(req->rq_repmsg,
1484 obd->obd_last_committed);
1486 DEBUG_REQ(D_IOCTL, req, "not sending last_committed update");
1488 CDEBUG(D_INFO, "last_committed "LPU64", xid "LPU64"\n",
1489 obd->obd_last_committed, req->rq_xid);
1492 EXPORT_SYMBOL(target_committed_to_req);
1494 #ifdef HAVE_QUOTA_SUPPORT
1495 int target_handle_qc_callback(struct ptlrpc_request *req)
1497 struct obd_quotactl *oqctl;
1498 struct client_obd *cli = &req->rq_export->exp_obd->u.cli;
1500 oqctl = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*oqctl),
1501 lustre_swab_obd_quotactl);
1502 if (oqctl == NULL) {
1503 CERROR("Can't unpack obd_quotactl\n");
1507 cli->cl_qchk_stat = oqctl->qc_stat;
1512 int target_handle_dqacq_callback(struct ptlrpc_request *req)
1515 struct obd_device *obd = req->rq_export->exp_obd;
1516 struct obd_device *master_obd;
1517 struct lustre_quota_ctxt *qctxt;
1518 struct qunit_data *qdata;
1520 struct qunit_data_old *qdata_old;
1522 int repsize[2] = { sizeof(struct ptlrpc_body),
1523 sizeof(struct qunit_data) };
1526 rc = lustre_pack_reply(req, 2, repsize, NULL);
1528 CERROR("packing reply failed!: rc = %d\n", rc);
1531 LASSERT(req->rq_export);
1533 /* fixed for bug10707 */
1534 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_QUOTA64) &&
1535 !OBD_FAIL_CHECK(OBD_FAIL_QUOTA_QD_COUNT_32BIT)) {
1536 CDEBUG(D_QUOTA, "qd_count is 64bit!\n");
1537 rep = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1538 sizeof(struct qunit_data));
1540 qdata = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*qdata),
1543 CDEBUG(D_QUOTA, "qd_count is 32bit!\n");
1544 rep = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1545 sizeof(struct qunit_data_old));
1547 qdata_old = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*qdata_old),
1548 lustre_swab_qdata_old);
1549 qdata = lustre_quota_old_to_new(qdata_old);
1552 if (qdata == NULL) {
1553 CERROR("Can't unpack qunit_data\n");
1557 /* we use the observer */
1558 LASSERT(obd->obd_observer && obd->obd_observer->obd_observer);
1559 master_obd = obd->obd_observer->obd_observer;
1560 qctxt = &master_obd->u.obt.obt_qctxt;
1562 LASSERT(qctxt->lqc_handler);
1563 rc = qctxt->lqc_handler(master_obd, qdata,
1564 lustre_msg_get_opc(req->rq_reqmsg));
1565 if (rc && rc != -EDQUOT)
1566 CDEBUG(rc == -EBUSY ? D_QUOTA : D_ERROR,
1567 "dqacq failed! (rc:%d)\n", rc);
1569 /* the qd_count might be changed in lqc_handler */
1570 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_QUOTA64) &&
1571 !OBD_FAIL_CHECK(OBD_FAIL_QUOTA_QD_COUNT_32BIT)) {
1572 memcpy(rep,qdata,sizeof(*qdata));
1574 qdata_old = lustre_quota_new_to_old(qdata);
1575 memcpy(rep,qdata_old,sizeof(*qdata_old));
1577 req->rq_status = rc;
1578 rc = ptlrpc_reply(req);
1583 #endif /* !__KERNEL__ */
1585 #endif /* HAVE_QUOTA_SUPPORT */
1587 ldlm_mode_t lck_compat_array[] = {
1588 [LCK_EX] LCK_COMPAT_EX,
1589 [LCK_PW] LCK_COMPAT_PW,
1590 [LCK_PR] LCK_COMPAT_PR,
1591 [LCK_CW] LCK_COMPAT_CW,
1592 [LCK_CR] LCK_COMPAT_CR,
1593 [LCK_NL] LCK_COMPAT_NL,
1594 [LCK_GROUP] LCK_COMPAT_GROUP