4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_ECHO
39 #include <libcfs/libcfs.h>
41 #include <liblustre.h>
45 #include <obd_support.h>
46 #include <obd_class.h>
47 #include <lustre_debug.h>
48 #include <lprocfs_status.h>
49 #include <cl_object.h>
50 #include <lustre_fid.h>
51 #include <lustre_acl.h>
52 #include <lustre_net.h>
54 #include "echo_internal.h"
56 /** \defgroup echo_client Echo Client
61 struct cl_device ed_cl;
62 struct echo_client_obd *ed_ec;
64 struct cl_site ed_site_myself;
65 struct cl_site *ed_site;
66 struct lu_device *ed_next;
69 struct lu_client_seq *ed_cl_seq;
73 struct cl_object eo_cl;
74 struct cl_object_header eo_hdr;
76 struct echo_device *eo_dev;
77 cfs_list_t eo_obj_chain;
78 struct lov_stripe_md *eo_lsm;
79 cfs_atomic_t eo_npages;
83 struct echo_object_conf {
84 struct cl_object_conf eoc_cl;
85 struct lov_stripe_md **eoc_md;
89 struct cl_page_slice ep_cl;
91 cfs_page_t *ep_vmpage;
95 struct cl_lock_slice el_cl;
97 struct echo_object *el_object;
99 cfs_atomic_t el_refcount;
103 struct cl_io_slice ei_cl;
108 struct cl_req_slice er_cl;
112 static int echo_client_setup(const struct lu_env *env,
113 struct obd_device *obddev,
114 struct lustre_cfg *lcfg);
115 static int echo_client_cleanup(struct obd_device *obddev);
118 /** \defgroup echo_helpers Helper functions
121 static inline struct echo_device *cl2echo_dev(const struct cl_device *dev)
123 return container_of0(dev, struct echo_device, ed_cl);
126 static inline struct cl_device *echo_dev2cl(struct echo_device *d)
131 static inline struct echo_device *obd2echo_dev(const struct obd_device *obd)
133 return cl2echo_dev(lu2cl_dev(obd->obd_lu_dev));
136 static inline struct cl_object *echo_obj2cl(struct echo_object *eco)
141 static inline struct echo_object *cl2echo_obj(const struct cl_object *o)
143 return container_of(o, struct echo_object, eo_cl);
146 static inline struct echo_page *cl2echo_page(const struct cl_page_slice *s)
148 return container_of(s, struct echo_page, ep_cl);
151 static inline struct echo_lock *cl2echo_lock(const struct cl_lock_slice *s)
153 return container_of(s, struct echo_lock, el_cl);
156 static inline struct cl_lock *echo_lock2cl(const struct echo_lock *ecl)
158 return ecl->el_cl.cls_lock;
161 static struct lu_context_key echo_thread_key;
162 static inline struct echo_thread_info *echo_env_info(const struct lu_env *env)
164 struct echo_thread_info *info;
165 info = lu_context_key_get(&env->le_ctx, &echo_thread_key);
166 LASSERT(info != NULL);
171 struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c)
173 return container_of(c, struct echo_object_conf, eoc_cl);
176 static inline void lsm2fid(struct lov_stripe_md *lsm, struct lu_fid *fid)
179 fid->f_seq = FID_SEQ_ECHO;
180 /* truncated to 32 bits by assignment */
181 fid->f_oid = lsm->lsm_object_id;
182 fid->f_ver = lsm->lsm_object_id >> 32;
184 /** @} echo_helpers */
186 static struct echo_object *cl_echo_object_find(struct echo_device *d,
187 struct lov_stripe_md **lsm);
188 static int cl_echo_object_put(struct echo_object *eco);
189 static int cl_echo_enqueue (struct echo_object *eco, obd_off start,
190 obd_off end, int mode, __u64 *cookie);
191 static int cl_echo_cancel (struct echo_device *d, __u64 cookie);
192 static int cl_echo_object_brw(struct echo_object *eco, int rw, obd_off offset,
193 cfs_page_t **pages, int npages, int async);
195 static struct echo_thread_info *echo_env_info(const struct lu_env *env);
197 struct echo_thread_info {
198 struct echo_object_conf eti_conf;
199 struct lustre_md eti_md;
201 struct cl_2queue eti_queue;
203 struct cl_lock_descr eti_descr;
204 struct lu_fid eti_fid;
205 struct lu_fid eti_fid2;
206 struct md_op_spec eti_spec;
207 struct lov_mds_md_v3 eti_lmm;
208 struct lov_user_md_v3 eti_lum;
209 struct md_attr eti_ma;
210 struct lu_name eti_lname;
212 struct lu_buf eti_buf;
213 char eti_xattr_buf[LUSTRE_POSIX_ACL_MAX_SIZE];
216 /* No session used right now */
217 struct echo_session_info {
221 static cfs_mem_cache_t *echo_page_kmem;
222 static cfs_mem_cache_t *echo_lock_kmem;
223 static cfs_mem_cache_t *echo_object_kmem;
224 static cfs_mem_cache_t *echo_thread_kmem;
225 static cfs_mem_cache_t *echo_session_kmem;
226 //static cfs_mem_cache_t *echo_req_kmem;
228 static struct lu_kmem_descr echo_caches[] = {
230 .ckd_cache = &echo_page_kmem,
231 .ckd_name = "echo_page_kmem",
232 .ckd_size = sizeof (struct echo_page)
235 .ckd_cache = &echo_lock_kmem,
236 .ckd_name = "echo_lock_kmem",
237 .ckd_size = sizeof (struct echo_lock)
240 .ckd_cache = &echo_object_kmem,
241 .ckd_name = "echo_object_kmem",
242 .ckd_size = sizeof (struct echo_object)
245 .ckd_cache = &echo_thread_kmem,
246 .ckd_name = "echo_thread_kmem",
247 .ckd_size = sizeof (struct echo_thread_info)
250 .ckd_cache = &echo_session_kmem,
251 .ckd_name = "echo_session_kmem",
252 .ckd_size = sizeof (struct echo_session_info)
256 .ckd_cache = &echo_req_kmem,
257 .ckd_name = "echo_req_kmem",
258 .ckd_size = sizeof (struct echo_req)
266 /** \defgroup echo_page Page operations
268 * Echo page operations.
272 static cfs_page_t *echo_page_vmpage(const struct lu_env *env,
273 const struct cl_page_slice *slice)
275 return cl2echo_page(slice)->ep_vmpage;
278 static int echo_page_own(const struct lu_env *env,
279 const struct cl_page_slice *slice,
280 struct cl_io *io, int nonblock)
282 struct echo_page *ep = cl2echo_page(slice);
285 cfs_mutex_lock(&ep->ep_lock);
286 else if (!cfs_mutex_trylock(&ep->ep_lock))
291 static void echo_page_disown(const struct lu_env *env,
292 const struct cl_page_slice *slice,
295 struct echo_page *ep = cl2echo_page(slice);
297 LASSERT(cfs_mutex_is_locked(&ep->ep_lock));
298 cfs_mutex_unlock(&ep->ep_lock);
301 static void echo_page_discard(const struct lu_env *env,
302 const struct cl_page_slice *slice,
303 struct cl_io *unused)
305 cl_page_delete(env, slice->cpl_page);
308 static int echo_page_is_vmlocked(const struct lu_env *env,
309 const struct cl_page_slice *slice)
311 if (cfs_mutex_is_locked(&cl2echo_page(slice)->ep_lock))
316 static void echo_page_completion(const struct lu_env *env,
317 const struct cl_page_slice *slice,
320 LASSERT(slice->cpl_page->cp_sync_io != NULL);
323 static void echo_page_fini(const struct lu_env *env,
324 struct cl_page_slice *slice)
326 struct echo_page *ep = cl2echo_page(slice);
327 struct echo_object *eco = cl2echo_obj(slice->cpl_obj);
328 cfs_page_t *vmpage = ep->ep_vmpage;
331 cfs_atomic_dec(&eco->eo_npages);
332 page_cache_release(vmpage);
333 OBD_SLAB_FREE_PTR(ep, echo_page_kmem);
337 static int echo_page_prep(const struct lu_env *env,
338 const struct cl_page_slice *slice,
339 struct cl_io *unused)
344 static int echo_page_print(const struct lu_env *env,
345 const struct cl_page_slice *slice,
346 void *cookie, lu_printer_t printer)
348 struct echo_page *ep = cl2echo_page(slice);
350 (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n",
351 ep, cfs_mutex_is_locked(&ep->ep_lock), ep->ep_vmpage);
355 static const struct cl_page_operations echo_page_ops = {
356 .cpo_own = echo_page_own,
357 .cpo_disown = echo_page_disown,
358 .cpo_discard = echo_page_discard,
359 .cpo_vmpage = echo_page_vmpage,
360 .cpo_fini = echo_page_fini,
361 .cpo_print = echo_page_print,
362 .cpo_is_vmlocked = echo_page_is_vmlocked,
365 .cpo_prep = echo_page_prep,
366 .cpo_completion = echo_page_completion,
369 .cpo_prep = echo_page_prep,
370 .cpo_completion = echo_page_completion,
376 /** \defgroup echo_lock Locking
378 * echo lock operations
382 static void echo_lock_fini(const struct lu_env *env,
383 struct cl_lock_slice *slice)
385 struct echo_lock *ecl = cl2echo_lock(slice);
387 LASSERT(cfs_list_empty(&ecl->el_chain));
388 OBD_SLAB_FREE_PTR(ecl, echo_lock_kmem);
391 static void echo_lock_delete(const struct lu_env *env,
392 const struct cl_lock_slice *slice)
394 struct echo_lock *ecl = cl2echo_lock(slice);
396 LASSERT(cfs_list_empty(&ecl->el_chain));
399 static int echo_lock_fits_into(const struct lu_env *env,
400 const struct cl_lock_slice *slice,
401 const struct cl_lock_descr *need,
402 const struct cl_io *unused)
407 static struct cl_lock_operations echo_lock_ops = {
408 .clo_fini = echo_lock_fini,
409 .clo_delete = echo_lock_delete,
410 .clo_fits_into = echo_lock_fits_into
415 /** \defgroup echo_cl_ops cl_object operations
417 * operations for cl_object
421 static struct cl_page *echo_page_init(const struct lu_env *env,
422 struct cl_object *obj,
423 struct cl_page *page, cfs_page_t *vmpage)
425 struct echo_page *ep;
428 OBD_SLAB_ALLOC_PTR_GFP(ep, echo_page_kmem, CFS_ALLOC_IO);
430 struct echo_object *eco = cl2echo_obj(obj);
431 ep->ep_vmpage = vmpage;
432 page_cache_get(vmpage);
433 cfs_mutex_init(&ep->ep_lock);
434 cl_page_slice_add(page, &ep->ep_cl, obj, &echo_page_ops);
435 cfs_atomic_inc(&eco->eo_npages);
437 RETURN(ERR_PTR(ep ? 0 : -ENOMEM));
440 static int echo_io_init(const struct lu_env *env, struct cl_object *obj,
446 static int echo_lock_init(const struct lu_env *env,
447 struct cl_object *obj, struct cl_lock *lock,
448 const struct cl_io *unused)
450 struct echo_lock *el;
453 OBD_SLAB_ALLOC_PTR_GFP(el, echo_lock_kmem, CFS_ALLOC_IO);
455 cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops);
456 el->el_object = cl2echo_obj(obj);
457 CFS_INIT_LIST_HEAD(&el->el_chain);
458 cfs_atomic_set(&el->el_refcount, 0);
460 RETURN(el == NULL ? -ENOMEM : 0);
463 static int echo_conf_set(const struct lu_env *env, struct cl_object *obj,
464 const struct cl_object_conf *conf)
469 static const struct cl_object_operations echo_cl_obj_ops = {
470 .coo_page_init = echo_page_init,
471 .coo_lock_init = echo_lock_init,
472 .coo_io_init = echo_io_init,
473 .coo_conf_set = echo_conf_set
475 /** @} echo_cl_ops */
477 /** \defgroup echo_lu_ops lu_object operations
479 * operations for echo lu object.
483 static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
484 const struct lu_object_conf *conf)
486 struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev));
487 struct echo_client_obd *ec = ed->ed_ec;
488 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
492 struct lu_object *below;
493 struct lu_device *under;
496 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header,
500 lu_object_add(obj, below);
503 if (!ed->ed_next_ismd) {
504 const struct cl_object_conf *cconf = lu2cl_conf(conf);
505 struct echo_object_conf *econf = cl2echo_conf(cconf);
507 LASSERT(econf->eoc_md);
508 eco->eo_lsm = *econf->eoc_md;
509 /* clear the lsm pointer so that it won't get freed. */
510 *econf->eoc_md = NULL;
516 cfs_atomic_set(&eco->eo_npages, 0);
518 cfs_spin_lock(&ec->ec_lock);
519 cfs_list_add_tail(&eco->eo_obj_chain, &ec->ec_objects);
520 cfs_spin_unlock(&ec->ec_lock);
525 static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
527 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
528 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
529 struct lov_stripe_md *lsm = eco->eo_lsm;
532 LASSERT(cfs_atomic_read(&eco->eo_npages) == 0);
534 cfs_spin_lock(&ec->ec_lock);
535 cfs_list_del_init(&eco->eo_obj_chain);
536 cfs_spin_unlock(&ec->ec_lock);
539 lu_object_header_fini(obj->lo_header);
542 obd_free_memmd(ec->ec_exp, &lsm);
543 OBD_SLAB_FREE_PTR(eco, echo_object_kmem);
547 static int echo_object_print(const struct lu_env *env, void *cookie,
548 lu_printer_t p, const struct lu_object *o)
550 struct echo_object *obj = cl2echo_obj(lu2cl(o));
552 return (*p)(env, cookie, "echoclient-object@%p", obj);
555 static const struct lu_object_operations echo_lu_obj_ops = {
556 .loo_object_init = echo_object_init,
557 .loo_object_delete = NULL,
558 .loo_object_release = NULL,
559 .loo_object_free = echo_object_free,
560 .loo_object_print = echo_object_print,
561 .loo_object_invariant = NULL
563 /** @} echo_lu_ops */
565 /** \defgroup echo_lu_dev_ops lu_device operations
567 * Operations for echo lu device.
571 static struct lu_object *echo_object_alloc(const struct lu_env *env,
572 const struct lu_object_header *hdr,
573 struct lu_device *dev)
575 struct echo_object *eco;
576 struct lu_object *obj = NULL;
579 /* we're the top dev. */
580 LASSERT(hdr == NULL);
581 OBD_SLAB_ALLOC_PTR_GFP(eco, echo_object_kmem, CFS_ALLOC_IO);
583 struct cl_object_header *hdr = &eco->eo_hdr;
585 obj = &echo_obj2cl(eco)->co_lu;
586 cl_object_header_init(hdr);
587 lu_object_init(obj, &hdr->coh_lu, dev);
588 lu_object_add_top(&hdr->coh_lu, obj);
590 eco->eo_cl.co_ops = &echo_cl_obj_ops;
591 obj->lo_ops = &echo_lu_obj_ops;
596 static struct lu_device_operations echo_device_lu_ops = {
597 .ldo_object_alloc = echo_object_alloc,
600 /** @} echo_lu_dev_ops */
602 static struct cl_device_operations echo_device_cl_ops = {
605 /** \defgroup echo_init Setup and teardown
607 * Init and fini functions for echo client.
611 static int echo_site_init(const struct lu_env *env, struct echo_device *ed)
613 struct cl_site *site = &ed->ed_site_myself;
616 /* initialize site */
617 rc = cl_site_init(site, &ed->ed_cl);
619 CERROR("Cannot initilize site for echo client(%d)\n", rc);
623 rc = lu_site_init_finish(&site->cs_lu);
631 static void echo_site_fini(const struct lu_env *env, struct echo_device *ed)
634 if (!ed->ed_next_ismd)
635 cl_site_fini(ed->ed_site);
640 static void *echo_thread_key_init(const struct lu_context *ctx,
641 struct lu_context_key *key)
643 struct echo_thread_info *info;
645 OBD_SLAB_ALLOC_PTR_GFP(info, echo_thread_kmem, CFS_ALLOC_IO);
647 info = ERR_PTR(-ENOMEM);
651 static void echo_thread_key_fini(const struct lu_context *ctx,
652 struct lu_context_key *key, void *data)
654 struct echo_thread_info *info = data;
655 OBD_SLAB_FREE_PTR(info, echo_thread_kmem);
658 static void echo_thread_key_exit(const struct lu_context *ctx,
659 struct lu_context_key *key, void *data)
663 static struct lu_context_key echo_thread_key = {
664 .lct_tags = LCT_CL_THREAD,
665 .lct_init = echo_thread_key_init,
666 .lct_fini = echo_thread_key_fini,
667 .lct_exit = echo_thread_key_exit
670 static void *echo_session_key_init(const struct lu_context *ctx,
671 struct lu_context_key *key)
673 struct echo_session_info *session;
675 OBD_SLAB_ALLOC_PTR_GFP(session, echo_session_kmem, CFS_ALLOC_IO);
677 session = ERR_PTR(-ENOMEM);
681 static void echo_session_key_fini(const struct lu_context *ctx,
682 struct lu_context_key *key, void *data)
684 struct echo_session_info *session = data;
685 OBD_SLAB_FREE_PTR(session, echo_session_kmem);
688 static void echo_session_key_exit(const struct lu_context *ctx,
689 struct lu_context_key *key, void *data)
693 static struct lu_context_key echo_session_key = {
694 .lct_tags = LCT_SESSION,
695 .lct_init = echo_session_key_init,
696 .lct_fini = echo_session_key_fini,
697 .lct_exit = echo_session_key_exit
700 LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key);
702 #define ECHO_SEQ_WIDTH 0xffffffff
703 static int echo_fid_init(struct echo_device *ed, char *obd_name,
710 OBD_ALLOC_PTR(ed->ed_cl_seq);
711 if (ed->ed_cl_seq == NULL)
714 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
716 GOTO(out_free_seq, rc = -ENOMEM);
718 snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s", obd_name);
720 /* Init client side sequence-manager */
721 rc = seq_client_init(ed->ed_cl_seq, NULL,
723 prefix, ms->ms_server_seq);
724 ed->ed_cl_seq->lcs_width = ECHO_SEQ_WIDTH;
725 OBD_FREE(prefix, MAX_OBD_NAME + 5);
727 GOTO(out_free_seq, rc);
732 OBD_FREE_PTR(ed->ed_cl_seq);
733 ed->ed_cl_seq = NULL;
737 static int echo_fid_fini(struct obd_device *obddev)
739 struct echo_device *ed = obd2echo_dev(obddev);
742 if (ed->ed_cl_seq != NULL) {
743 seq_client_fini(ed->ed_cl_seq);
744 OBD_FREE_PTR(ed->ed_cl_seq);
745 ed->ed_cl_seq = NULL;
751 static struct lu_device *echo_device_alloc(const struct lu_env *env,
752 struct lu_device_type *t,
753 struct lustre_cfg *cfg)
755 struct lu_device *next;
756 struct echo_device *ed;
757 struct cl_device *cd;
758 struct obd_device *obd = NULL; /* to keep compiler happy */
759 struct obd_device *tgt;
760 const char *tgt_type_name;
767 GOTO(out, rc = -ENOMEM);
771 rc = cl_device_init(cd, t);
775 cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
776 cd->cd_ops = &echo_device_cl_ops;
779 obd = class_name2obd(lustre_cfg_string(cfg, 0));
780 LASSERT(obd != NULL);
781 LASSERT(env != NULL);
783 tgt = class_name2obd(lustre_cfg_string(cfg, 1));
785 CERROR("Can not find tgt device %s\n",
786 lustre_cfg_string(cfg, 1));
787 GOTO(out, rc = -ENODEV);
790 next = tgt->obd_lu_dev;
791 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
792 ed->ed_next_ismd = 1;
794 ed->ed_next_ismd = 0;
795 rc = echo_site_init(env, ed);
801 rc = echo_client_setup(env, obd, cfg);
805 ed->ed_ec = &obd->u.echo_client;
808 if (ed->ed_next_ismd) {
809 /* Suppose to connect to some Metadata layer */
811 struct lu_device *ld;
815 CERROR("%s is not lu device type!\n",
816 lustre_cfg_string(cfg, 1));
817 GOTO(out, rc = -EINVAL);
820 tgt_type_name = lustre_cfg_string(cfg, 2);
821 if (!tgt_type_name) {
822 CERROR("%s no type name for echo %s setup\n",
823 lustre_cfg_string(cfg, 1),
824 tgt->obd_type->typ_name);
825 GOTO(out, rc = -EINVAL);
830 cfs_spin_lock(&ls->ls_ld_lock);
831 cfs_list_for_each_entry(ld, &ls->ls_ld_linkage, ld_linkage) {
832 if (strcmp(ld->ld_type->ldt_name, tgt_type_name) == 0) {
837 cfs_spin_unlock(&ls->ls_ld_lock);
840 CERROR("%s is not lu device type!\n",
841 lustre_cfg_string(cfg, 1));
842 GOTO(out, rc = -EINVAL);
846 /* For MD echo client, it will use the site in MDS stack */
847 ed->ed_site_myself.cs_lu = *ls;
848 ed->ed_site = &ed->ed_site_myself;
849 ed->ed_cl.cd_lu_dev.ld_site = &ed->ed_site_myself.cs_lu;
850 rc = echo_fid_init(ed, obd->obd_name, lu_site2md(ls));
852 CERROR("echo fid init error %d\n", rc);
856 /* if echo client is to be stacked upon ost device, the next is
857 * NULL since ost is not a clio device so far */
858 if (next != NULL && !lu_device_is_cl(next))
861 tgt_type_name = tgt->obd_type->typ_name;
863 LASSERT(next != NULL);
864 if (next->ld_site != NULL)
865 GOTO(out, rc = -EBUSY);
867 next->ld_site = &ed->ed_site->cs_lu;
868 rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
869 next->ld_type->ldt_name,
874 /* Tricky case, I have to determine the obd type since
875 * CLIO uses the different parameters to initialize
876 * objects for lov & osc. */
877 if (strcmp(tgt_type_name, LUSTRE_LOV_NAME) == 0)
878 ed->ed_next_islov = 1;
880 LASSERT(strcmp(tgt_type_name,
881 LUSTRE_OSC_NAME) == 0);
883 LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0);
887 RETURN(&cd->cd_lu_dev);
892 rc2 = echo_client_cleanup(obd);
894 CERROR("Cleanup obd device %s error(%d)\n",
899 echo_site_fini(env, ed);
901 cl_device_fini(&ed->ed_cl);
911 static int echo_device_init(const struct lu_env *env, struct lu_device *d,
912 const char *name, struct lu_device *next)
918 static struct lu_device *echo_device_fini(const struct lu_env *env,
921 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
922 struct lu_device *next = ed->ed_next;
924 while (next && !ed->ed_next_ismd)
925 next = next->ld_type->ldt_ops->ldto_device_fini(env, next);
929 static void echo_lock_release(const struct lu_env *env,
930 struct echo_lock *ecl,
933 struct cl_lock *clk = echo_lock2cl(ecl);
937 cl_lock_release(env, clk, "ec enqueue", ecl->el_object);
939 cl_lock_mutex_get(env, clk);
940 cl_lock_cancel(env, clk);
941 cl_lock_delete(env, clk);
942 cl_lock_mutex_put(env, clk);
944 cl_lock_put(env, clk);
947 static struct lu_device *echo_device_free(const struct lu_env *env,
950 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
951 struct echo_client_obd *ec = ed->ed_ec;
952 struct echo_object *eco;
953 struct lu_device *next = ed->ed_next;
955 CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n",
958 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
960 /* check if there are objects still alive.
961 * It shouldn't have any object because lu_site_purge would cleanup
962 * all of cached objects. Anyway, probably the echo device is being
963 * parallelly accessed.
965 cfs_spin_lock(&ec->ec_lock);
966 cfs_list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain)
968 cfs_spin_unlock(&ec->ec_lock);
971 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
974 "Waiting for the reference of echo object to be dropped\n");
976 /* Wait for the last reference to be dropped. */
977 cfs_spin_lock(&ec->ec_lock);
978 while (!cfs_list_empty(&ec->ec_objects)) {
979 cfs_spin_unlock(&ec->ec_lock);
980 CERROR("echo_client still has objects at cleanup time, "
981 "wait for 1 second\n");
982 cfs_schedule_timeout_and_set_state(CFS_TASK_UNINT,
983 cfs_time_seconds(1));
984 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
985 cfs_spin_lock(&ec->ec_lock);
987 cfs_spin_unlock(&ec->ec_lock);
989 LASSERT(cfs_list_empty(&ec->ec_locks));
991 CDEBUG(D_INFO, "No object exists, exiting...\n");
993 echo_client_cleanup(d->ld_obd);
994 echo_fid_fini(d->ld_obd);
995 while (next && !ed->ed_next_ismd)
996 next = next->ld_type->ldt_ops->ldto_device_free(env, next);
998 LASSERT(ed->ed_site == lu2cl_site(d->ld_site));
999 echo_site_fini(env, ed);
1000 cl_device_fini(&ed->ed_cl);
1006 static const struct lu_device_type_operations echo_device_type_ops = {
1007 .ldto_init = echo_type_init,
1008 .ldto_fini = echo_type_fini,
1010 .ldto_start = echo_type_start,
1011 .ldto_stop = echo_type_stop,
1013 .ldto_device_alloc = echo_device_alloc,
1014 .ldto_device_free = echo_device_free,
1015 .ldto_device_init = echo_device_init,
1016 .ldto_device_fini = echo_device_fini
1019 static struct lu_device_type echo_device_type = {
1020 .ldt_tags = LU_DEVICE_CL,
1021 .ldt_name = LUSTRE_ECHO_CLIENT_NAME,
1022 .ldt_ops = &echo_device_type_ops,
1023 .ldt_ctx_tags = LCT_CL_THREAD | LCT_MD_THREAD | LCT_DT_THREAD,
1027 /** \defgroup echo_exports Exported operations
1029 * exporting functions to echo client
1034 /* Interfaces to echo client obd device */
1035 static struct echo_object *cl_echo_object_find(struct echo_device *d,
1036 struct lov_stripe_md **lsmp)
1039 struct echo_thread_info *info;
1040 struct echo_object_conf *conf;
1041 struct lov_stripe_md *lsm;
1042 struct echo_object *eco;
1043 struct cl_object *obj;
1051 LASSERT(lsm->lsm_object_id);
1053 /* Never return an object if the obd is to be freed. */
1054 if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
1055 RETURN(ERR_PTR(-ENODEV));
1057 env = cl_env_get(&refcheck);
1059 RETURN((void *)env);
1061 info = echo_env_info(env);
1062 conf = &info->eti_conf;
1064 if (!d->ed_next_islov) {
1065 struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
1066 LASSERT(oinfo != NULL);
1067 oinfo->loi_id = lsm->lsm_object_id;
1068 oinfo->loi_seq = lsm->lsm_object_seq;
1069 conf->eoc_cl.u.coc_oinfo = oinfo;
1071 struct lustre_md *md;
1073 memset(md, 0, sizeof *md);
1075 conf->eoc_cl.u.coc_md = md;
1078 conf->eoc_md = lsmp;
1080 fid = &info->eti_fid;
1083 obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl);
1085 GOTO(out, eco = (void*)obj);
1087 eco = cl2echo_obj(obj);
1088 if (eco->eo_deleted) {
1089 cl_object_put(env, obj);
1090 eco = ERR_PTR(-EAGAIN);
1094 cl_env_put(env, &refcheck);
1098 static int cl_echo_object_put(struct echo_object *eco)
1101 struct cl_object *obj = echo_obj2cl(eco);
1105 env = cl_env_get(&refcheck);
1107 RETURN(PTR_ERR(env));
1109 /* an external function to kill an object? */
1110 if (eco->eo_deleted) {
1111 struct lu_object_header *loh = obj->co_lu.lo_header;
1112 LASSERT(&eco->eo_hdr == luh2coh(loh));
1113 cfs_set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
1116 cl_object_put(env, obj);
1117 cl_env_put(env, &refcheck);
1121 static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco,
1122 obd_off start, obd_off end, int mode,
1123 __u64 *cookie , __u32 enqflags)
1126 struct cl_lock *lck;
1127 struct cl_object *obj;
1128 struct cl_lock_descr *descr;
1129 struct echo_thread_info *info;
1133 info = echo_env_info(env);
1135 descr = &info->eti_descr;
1136 obj = echo_obj2cl(eco);
1138 descr->cld_obj = obj;
1139 descr->cld_start = cl_index(obj, start);
1140 descr->cld_end = cl_index(obj, end);
1141 descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ;
1142 descr->cld_enq_flags = enqflags;
1145 lck = cl_lock_request(env, io, descr, "ec enqueue", eco);
1147 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
1148 struct echo_lock *el;
1150 rc = cl_wait(env, lck);
1152 el = cl2echo_lock(cl_lock_at(lck, &echo_device_type));
1153 cfs_spin_lock(&ec->ec_lock);
1154 if (cfs_list_empty(&el->el_chain)) {
1155 cfs_list_add(&el->el_chain, &ec->ec_locks);
1156 el->el_cookie = ++ec->ec_unique;
1158 cfs_atomic_inc(&el->el_refcount);
1159 *cookie = el->el_cookie;
1160 cfs_spin_unlock(&ec->ec_lock);
1162 cl_lock_release(env, lck, "ec enqueue", cfs_current());
1167 static int cl_echo_enqueue(struct echo_object *eco, obd_off start, obd_off end,
1168 int mode, __u64 *cookie)
1170 struct echo_thread_info *info;
1177 env = cl_env_get(&refcheck);
1179 RETURN(PTR_ERR(env));
1181 info = echo_env_info(env);
1184 result = cl_io_init(env, io, CIT_MISC, echo_obj2cl(eco));
1187 LASSERT(result == 0);
1189 result = cl_echo_enqueue0(env, eco, start, end, mode, cookie, 0);
1190 cl_io_fini(env, io);
1194 cl_env_put(env, &refcheck);
1198 static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed,
1201 struct echo_client_obd *ec = ed->ed_ec;
1202 struct echo_lock *ecl = NULL;
1204 int found = 0, still_used = 0;
1207 LASSERT(ec != NULL);
1208 cfs_spin_lock (&ec->ec_lock);
1209 cfs_list_for_each (el, &ec->ec_locks) {
1210 ecl = cfs_list_entry (el, struct echo_lock, el_chain);
1211 CDEBUG(D_INFO, "ecl: %p, cookie: "LPX64"\n", ecl, ecl->el_cookie);
1212 found = (ecl->el_cookie == cookie);
1214 if (cfs_atomic_dec_and_test(&ecl->el_refcount))
1215 cfs_list_del_init(&ecl->el_chain);
1221 cfs_spin_unlock (&ec->ec_lock);
1226 echo_lock_release(env, ecl, still_used);
1230 static int cl_echo_cancel(struct echo_device *ed, __u64 cookie)
1237 env = cl_env_get(&refcheck);
1239 RETURN(PTR_ERR(env));
1241 rc = cl_echo_cancel0(env, ed, cookie);
1243 cl_env_put(env, &refcheck);
1247 static int cl_echo_async_brw(const struct lu_env *env, struct cl_io *io,
1248 enum cl_req_type unused, struct cl_2queue *queue)
1250 struct cl_page *clp;
1251 struct cl_page *temp;
1255 cl_page_list_for_each_safe(clp, temp, &queue->c2_qin) {
1257 rc = cl_page_cache_add(env, io, clp, CRT_WRITE);
1260 result = result ?: rc;
1265 static int cl_echo_object_brw(struct echo_object *eco, int rw, obd_off offset,
1266 cfs_page_t **pages, int npages, int async)
1269 struct echo_thread_info *info;
1270 struct cl_object *obj = echo_obj2cl(eco);
1271 struct echo_device *ed = eco->eo_dev;
1272 struct cl_2queue *queue;
1274 struct cl_page *clp;
1275 struct lustre_handle lh = { 0 };
1276 int page_size = cl_page_size(obj);
1282 LASSERT((offset & ~CFS_PAGE_MASK) == 0);
1283 LASSERT(ed->ed_next != NULL);
1284 env = cl_env_get(&refcheck);
1286 RETURN(PTR_ERR(env));
1288 info = echo_env_info(env);
1290 queue = &info->eti_queue;
1292 cl_2queue_init(queue);
1293 rc = cl_io_init(env, io, CIT_MISC, obj);
1299 rc = cl_echo_enqueue0(env, eco, offset,
1300 offset + npages * CFS_PAGE_SIZE - 1,
1301 rw == READ ? LCK_PR : LCK_PW, &lh.cookie,
1304 GOTO(error_lock, rc);
1306 for (i = 0; i < npages; i++) {
1308 clp = cl_page_find(env, obj, cl_index(obj, offset),
1309 pages[i], CPT_TRANSIENT);
1314 LASSERT(clp->cp_type == CPT_TRANSIENT);
1316 rc = cl_page_own(env, io, clp);
1318 LASSERT(clp->cp_state == CPS_FREEING);
1319 cl_page_put(env, clp);
1323 cl_2queue_add(queue, clp);
1325 /* drop the reference count for cl_page_find, so that the page
1326 * will be freed in cl_2queue_fini. */
1327 cl_page_put(env, clp);
1328 cl_page_clip(env, clp, 0, page_size);
1330 offset += page_size;
1334 enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE;
1336 async = async && (typ == CRT_WRITE);
1338 rc = cl_echo_async_brw(env, io, typ, queue);
1340 rc = cl_io_submit_sync(env, io, typ, queue, 0);
1341 CDEBUG(D_INFO, "echo_client %s write returns %d\n",
1342 async ? "async" : "sync", rc);
1345 cl_echo_cancel0(env, ed, lh.cookie);
1348 cl_2queue_discard(env, io, queue);
1349 cl_2queue_disown(env, io, queue);
1350 cl_2queue_fini(env, queue);
1351 cl_io_fini(env, io);
1353 cl_env_put(env, &refcheck);
1356 /** @} echo_exports */
1359 static obd_id last_object_id;
1362 echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
1364 struct lov_stripe_md *ulsm = _ulsm;
1367 nob = offsetof (struct lov_stripe_md, lsm_oinfo[lsm->lsm_stripe_count]);
1371 if (cfs_copy_to_user (ulsm, lsm, sizeof(ulsm)))
1374 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1375 if (cfs_copy_to_user (ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
1376 sizeof(lsm->lsm_oinfo[0])))
1383 echo_copyin_lsm (struct echo_device *ed, struct lov_stripe_md *lsm,
1384 void *ulsm, int ulsm_nob)
1386 struct echo_client_obd *ec = ed->ed_ec;
1389 if (ulsm_nob < sizeof (*lsm))
1392 if (cfs_copy_from_user (lsm, ulsm, sizeof (*lsm)))
1395 if (lsm->lsm_stripe_count > ec->ec_nstripes ||
1396 lsm->lsm_magic != LOV_MAGIC ||
1397 (lsm->lsm_stripe_size & (~CFS_PAGE_MASK)) != 0 ||
1398 ((__u64)lsm->lsm_stripe_size * lsm->lsm_stripe_count > ~0UL))
1402 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1403 if (cfs_copy_from_user(lsm->lsm_oinfo[i],
1404 ((struct lov_stripe_md *)ulsm)-> \
1406 sizeof(lsm->lsm_oinfo[0])))
1412 static inline void echo_md_build_name(struct lu_name *lname, char *name,
1415 sprintf(name, LPU64, id);
1416 lname->ln_name = name;
1417 lname->ln_namelen = strlen(name);
1421 echo_md_create_internal(const struct lu_env *env, struct echo_device *ed,
1422 struct md_object *parent, struct lu_fid *fid,
1423 struct lu_name *lname, struct md_op_spec *spec,
1426 struct lu_object *ec_child, *child;
1427 struct lu_device *ld = ed->ed_next;
1428 struct echo_thread_info *info = echo_env_info(env);
1429 struct lu_fid *fid2 = &info->eti_fid2;
1430 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
1433 rc = mdo_lookup(env, parent, lname, fid2, spec);
1436 else if (rc != -ENOENT)
1439 ec_child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev,
1441 if (IS_ERR(ec_child)) {
1442 CERROR("Can not find the child "DFID": rc = %ld\n", PFID(fid),
1444 return PTR_ERR(ec_child);
1447 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1448 if (child == NULL) {
1449 CERROR("Can not locate the child "DFID"\n", PFID(fid));
1450 GOTO(out_put, rc = -EINVAL);
1453 CDEBUG(D_RPCTRACE, "Start creating object "DFID" %s %p\n",
1454 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1457 * Do not perform lookup sanity check. We know that name does not exist.
1459 spec->sp_cr_lookup = 0;
1460 rc = mdo_create(env, parent, lname, lu2md(child), spec, ma);
1462 CERROR("Can not create child "DFID": rc = %d\n", PFID(fid), rc);
1465 CDEBUG(D_RPCTRACE, "End creating object "DFID" %s %p rc = %d\n",
1466 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent, rc);
1468 lu_object_put(env, ec_child);
1472 static int echo_set_lmm_size(const struct lu_env *env,
1473 struct lu_device *ld,
1476 struct md_device *md = lu2md_dev(ld);
1477 int lmm_size, cookie_size, rc;
1481 rc = md->md_ops->mdo_maxsize_get(env, md,
1482 &lmm_size, &cookie_size);
1486 ma->ma_lmm_size = lmm_size;
1488 OBD_ALLOC(ma->ma_lmm, lmm_size);
1489 if (ma->ma_lmm == NULL) {
1490 ma->ma_lmm_size = 0;
1495 ma->ma_cookie_size = cookie_size;
1496 if (cookie_size > 0) {
1497 OBD_ALLOC(ma->ma_cookie, cookie_size);
1498 if (ma->ma_cookie == NULL) {
1499 ma->ma_cookie_size = 0;
1507 static int echo_create_md_object(const struct lu_env *env,
1508 struct echo_device *ed,
1509 struct lu_object *ec_parent,
1511 char *name, int namelen,
1512 __u64 id, __u32 mode, int count,
1513 int stripe_count, int stripe_offset)
1515 struct lu_object *parent;
1516 struct echo_thread_info *info = echo_env_info(env);
1517 struct lu_name *lname = &info->eti_lname;
1518 struct md_op_spec *spec = &info->eti_spec;
1519 struct md_attr *ma = &info->eti_ma;
1520 struct lu_device *ld = ed->ed_next;
1524 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1525 if (ec_parent == NULL) {
1526 lu_object_put(env, ec_parent);
1527 RETURN(PTR_ERR(parent));
1530 memset(ma, 0, sizeof(*ma));
1531 memset(spec, 0, sizeof(*spec));
1532 if (stripe_count != 0) {
1533 spec->sp_cr_flags |= FMODE_WRITE;
1534 rc = echo_set_lmm_size(env, ld, ma);
1537 if (stripe_count != -1) {
1538 struct lov_user_md_v3 *lum = &info->eti_lum;
1539 lum->lmm_magic = LOV_USER_MAGIC_V3;
1540 lum->lmm_stripe_count = stripe_count;
1541 lum->lmm_stripe_offset = stripe_offset;
1542 lum->lmm_pattern = 0;
1543 spec->u.sp_ea.eadata = lum;
1544 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1548 ma->ma_attr.la_mode = mode;
1549 ma->ma_attr.la_valid = LA_CTIME;
1550 ma->ma_attr.la_ctime = cfs_time_current_64();
1553 lname->ln_name = name;
1554 lname->ln_namelen = namelen;
1555 /* If name is specified, only create one object by name */
1556 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1561 /* Create multiple object sequenced by id */
1562 for (i = 0; i < count; i++) {
1563 char *tmp_name = info->eti_name;
1565 echo_md_build_name(lname, tmp_name, id);
1567 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1570 CERROR("Can not create child %s: rc = %d\n", tmp_name,
1579 if (ma->ma_lmm_size > 0 && ma->ma_lmm != NULL)
1580 OBD_FREE(ma->ma_lmm, ma->ma_lmm_size);
1581 if (ma->ma_cookie_size > 0 && ma->ma_cookie != NULL)
1582 OBD_FREE(ma->ma_cookie, ma->ma_cookie_size);
1587 static struct lu_object *echo_md_lookup(const struct lu_env *env,
1588 struct echo_device *ed,
1589 struct md_object *parent,
1590 struct lu_name *lname)
1592 struct echo_thread_info *info = echo_env_info(env);
1593 struct lu_fid *fid = &info->eti_fid;
1594 struct lu_object *child;
1598 CDEBUG(D_INFO, "lookup %s in parent "DFID" %p\n", lname->ln_name,
1600 rc = mdo_lookup(env, parent, lname, fid, NULL);
1602 CERROR("lookup %s: rc = %d\n", lname->ln_name, rc);
1603 RETURN(ERR_PTR(rc));
1606 child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1611 static int echo_setattr_object(const struct lu_env *env,
1612 struct echo_device *ed,
1613 struct lu_object *ec_parent,
1614 __u64 id, int count)
1616 struct lu_object *parent;
1617 struct echo_thread_info *info = echo_env_info(env);
1618 struct lu_name *lname = &info->eti_lname;
1619 char *name = info->eti_name;
1620 struct lu_device *ld = ed->ed_next;
1621 struct lu_buf *buf = &info->eti_buf;
1625 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1626 if (ec_parent == NULL) {
1627 lu_object_put(env, ec_parent);
1628 return PTR_ERR(parent);
1631 buf->lb_buf = info->eti_xattr_buf;
1632 buf->lb_len = sizeof(info->eti_xattr_buf);
1633 for (i = 0; i < count; i++) {
1634 struct lu_object *ec_child, *child;
1636 echo_md_build_name(lname, name, id);
1638 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1639 if (IS_ERR(ec_child)) {
1640 CERROR("Can't find child %s: rc = %ld\n",
1641 lname->ln_name, PTR_ERR(ec_child));
1642 RETURN(PTR_ERR(ec_child));
1645 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1646 if (child == NULL) {
1647 CERROR("Can not locate the child %s\n", lname->ln_name);
1648 lu_object_put(env, ec_child);
1653 CDEBUG(D_RPCTRACE, "Start setattr object "DFID"\n",
1654 PFID(lu_object_fid(child)));
1656 sprintf(name, "%s.test1", XATTR_USER_PREFIX);
1657 rc = mo_xattr_set(env, lu2md(child), buf, name,
1660 CERROR("Can not setattr child "DFID": rc = %d\n",
1661 PFID(lu_object_fid(child)), rc);
1662 lu_object_put(env, ec_child);
1665 CDEBUG(D_RPCTRACE, "End setattr object "DFID"\n",
1666 PFID(lu_object_fid(child)));
1668 lu_object_put(env, ec_child);
1673 static int echo_getattr_object(const struct lu_env *env,
1674 struct echo_device *ed,
1675 struct lu_object *ec_parent,
1676 __u64 id, int count)
1678 struct lu_object *parent;
1679 struct echo_thread_info *info = echo_env_info(env);
1680 struct lu_name *lname = &info->eti_lname;
1681 char *name = info->eti_name;
1682 struct md_attr *ma = &info->eti_ma;
1683 struct lu_device *ld = ed->ed_next;
1687 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1688 if (ec_parent == NULL) {
1689 lu_object_put(env, ec_parent);
1690 return PTR_ERR(parent);
1693 memset(ma, 0, sizeof(*ma));
1694 rc = echo_set_lmm_size(env, ld, ma);
1698 ma->ma_need |= MA_INODE | MA_LOV | MA_PFID | MA_HSM | MA_ACL_DEF;
1699 ma->ma_acl = info->eti_xattr_buf;
1700 ma->ma_acl_size = sizeof(info->eti_xattr_buf);
1702 for (i = 0; i < count; i++) {
1703 struct lu_object *ec_child, *child;
1706 echo_md_build_name(lname, name, id);
1708 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1709 if (IS_ERR(ec_child)) {
1710 CERROR("Can't find child %s: rc = %ld\n",
1711 lname->ln_name, PTR_ERR(ec_child));
1712 RETURN(PTR_ERR(ec_child));
1715 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1716 if (child == NULL) {
1717 CERROR("Can not locate the child %s\n", lname->ln_name);
1718 lu_object_put(env, ec_child);
1719 GOTO(out_free, rc = -EINVAL);
1722 CDEBUG(D_RPCTRACE, "Start getattr object "DFID"\n",
1723 PFID(lu_object_fid(child)));
1724 rc = mo_attr_get(env, lu2md(child), ma);
1726 CERROR("Can not getattr child "DFID": rc = %d\n",
1727 PFID(lu_object_fid(child)), rc);
1728 lu_object_put(env, ec_child);
1731 CDEBUG(D_RPCTRACE, "End getattr object "DFID"\n",
1732 PFID(lu_object_fid(child)));
1734 lu_object_put(env, ec_child);
1738 if (ma->ma_lmm_size > 0 && ma->ma_lmm != NULL)
1739 OBD_FREE(ma->ma_lmm, ma->ma_lmm_size);
1740 if (ma->ma_cookie_size > 0 && ma->ma_cookie != NULL)
1741 OBD_FREE(ma->ma_cookie, ma->ma_cookie_size);
1745 static int echo_lookup_object(const struct lu_env *env,
1746 struct echo_device *ed,
1747 struct lu_object *ec_parent,
1748 __u64 id, int count)
1750 struct lu_object *parent;
1751 struct echo_thread_info *info = echo_env_info(env);
1752 struct lu_name *lname = &info->eti_lname;
1753 char *name = info->eti_name;
1754 struct lu_fid *fid = &info->eti_fid;
1755 struct lu_device *ld = ed->ed_next;
1759 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1760 if (ec_parent == NULL) {
1761 lu_object_put(env, ec_parent);
1762 return PTR_ERR(parent);
1765 /*prepare the requests*/
1766 for (i = 0; i < count; i++) {
1767 echo_md_build_name(lname, name, id);
1769 CDEBUG(D_RPCTRACE, "Start lookup object "DFID" %s %p\n",
1770 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1772 rc = mdo_lookup(env, lu2md(parent), lname, fid, NULL);
1774 CERROR("Can not lookup child %s: rc = %d\n", name, rc);
1777 CDEBUG(D_RPCTRACE, "End lookup object "DFID" %s %p\n",
1778 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1785 static int echo_md_destroy_internal(const struct lu_env *env,
1786 struct echo_device *ed,
1787 struct md_object *parent,
1788 struct lu_name *lname,
1791 struct lu_device *ld = ed->ed_next;
1792 struct lu_object *ec_child;
1793 struct lu_object *child;
1796 ec_child = echo_md_lookup(env, ed, parent, lname);
1797 if (IS_ERR(ec_child)) {
1798 CERROR("Can't find child %s: rc = %ld\n", lname->ln_name,
1800 RETURN(PTR_ERR(ec_child));
1803 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1804 if (child == NULL) {
1805 CERROR("Can not locate the child %s\n", lname->ln_name);
1806 GOTO(out_put, rc = -EINVAL);
1809 CDEBUG(D_RPCTRACE, "Start destroy object "DFID" %s %p\n",
1810 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1812 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,3,50,0)
1813 /* After 2.4, MDT will send destroy RPC to OST directly, so no need
1815 ma->ma_valid |= MA_FLAGS;
1816 ma->ma_attr_flags |= MDS_UNLINK_DESTROY;
1818 #warning "Please remove this after 2.4 (LOD/OSP)"
1820 rc = mdo_unlink(env, parent, lu2md(child), lname, ma);
1822 CERROR("Can not unlink child %s: rc = %d\n",
1823 lname->ln_name, rc);
1826 CDEBUG(D_RPCTRACE, "End destroy object "DFID" %s %p\n",
1827 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1829 lu_object_put(env, ec_child);
1833 static int echo_destroy_object(const struct lu_env *env,
1834 struct echo_device *ed,
1835 struct lu_object *ec_parent,
1836 char *name, int namelen,
1837 __u64 id, __u32 mode,
1840 struct echo_thread_info *info = echo_env_info(env);
1841 struct lu_name *lname = &info->eti_lname;
1842 struct md_attr *ma = &info->eti_ma;
1843 struct lu_device *ld = ed->ed_next;
1844 struct lu_object *parent;
1849 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1853 memset(ma, 0, sizeof(*ma));
1854 ma->ma_attr.la_mode = mode;
1855 ma->ma_attr.la_valid = LA_CTIME;
1856 ma->ma_attr.la_ctime = cfs_time_current_64();
1857 ma->ma_need = MA_INODE;
1860 rc = echo_set_lmm_size(env, ld, ma);
1864 lname->ln_name = name;
1865 lname->ln_namelen = namelen;
1866 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1871 /*prepare the requests*/
1872 for (i = 0; i < count; i++) {
1873 char *tmp_name = info->eti_name;
1875 ma->ma_need |= MA_LOV;
1877 echo_md_build_name(lname, tmp_name, id);
1879 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1882 CERROR("Can not unlink child %s: rc = %d\n", name, rc);
1889 if (ma->ma_lmm_size > 0 && ma->ma_lmm != NULL)
1890 OBD_FREE(ma->ma_lmm, ma->ma_lmm_size);
1891 if (ma->ma_cookie_size > 0 && ma->ma_cookie != NULL)
1892 OBD_FREE(ma->ma_cookie, ma->ma_cookie_size);
1896 static struct lu_object *echo_resolve_path(const struct lu_env *env,
1897 struct echo_device *ed, char *path,
1900 struct lu_device *ld = ed->ed_next;
1901 struct md_device *md = lu2md_dev(ld);
1902 struct echo_thread_info *info = echo_env_info(env);
1903 struct lu_fid *fid = &info->eti_fid;
1904 struct lu_name *lname = &info->eti_lname;
1905 struct lu_object *parent = NULL;
1906 struct lu_object *child = NULL;
1910 /*Only support MDD layer right now*/
1911 rc = md->md_ops->mdo_root_get(env, md, fid);
1913 CERROR("get root error: rc = %d\n", rc);
1914 RETURN(ERR_PTR(rc));
1917 parent = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1918 if (IS_ERR(parent)) {
1919 CERROR("Can not find the parent "DFID": rc = %ld\n",
1920 PFID(fid), PTR_ERR(parent));
1925 struct lu_object *ld_parent;
1928 e = strsep(&path, "/");
1933 if (!path || path[0] == '\0')
1939 lname->ln_namelen = strlen(e);
1941 ld_parent = lu_object_locate(parent->lo_header, ld->ld_type);
1942 if (ld_parent == NULL) {
1943 lu_object_put(env, parent);
1948 child = echo_md_lookup(env, ed, lu2md(ld_parent), lname);
1949 lu_object_put(env, parent);
1950 if (IS_ERR(child)) {
1951 rc = (int)PTR_ERR(child);
1952 CERROR("lookup %s under parent "DFID": rc = %d\n",
1953 lname->ln_name, PFID(lu_object_fid(ld_parent)),
1960 RETURN(ERR_PTR(rc));
1965 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_NOREF | LCT_MD_THREAD)
1966 #define ECHO_MD_SES_TAG (LCT_SESSION | LCT_REMEMBER | LCT_NOREF)
1968 static int echo_md_handler(struct echo_device *ed, int command,
1969 char *path, int path_len, int id, int count,
1970 struct obd_ioctl_data *data)
1972 struct lu_device *ld = ed->ed_next;
1975 struct lu_object *parent;
1977 int namelen = data->ioc_plen2;
1982 CERROR("MD echo client is not being initialized properly\n");
1986 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
1987 CERROR("Only support MDD layer right now!\n");
1991 env = cl_env_get(&refcheck);
1993 RETURN(PTR_ERR(env));
1995 rc = lu_env_refill_by_tags(env, ECHO_MD_CTX_TAG, ECHO_MD_SES_TAG);
1997 cl_env_put(env, &refcheck);
2001 parent = echo_resolve_path(env, ed, path, path_len);
2002 if (IS_ERR(parent)) {
2003 CERROR("Can not resolve the path %s: rc = %ld\n", path,
2005 cl_env_put(env, &refcheck);
2006 RETURN(PTR_ERR(parent));
2010 OBD_ALLOC(name, namelen + 1);
2013 if (cfs_copy_from_user(name, data->ioc_pbuf2, namelen)) {
2014 OBD_FREE(name, namelen + 1);
2020 case ECHO_MD_CREATE:
2021 case ECHO_MD_MKDIR: {
2022 struct echo_thread_info *info = echo_env_info(env);
2023 __u32 mode = data->ioc_obdo2.o_mode;
2024 struct lu_fid *fid = &info->eti_fid;
2025 int stripe_count = (int)data->ioc_obdo2.o_misc;
2026 int stripe_index = (int)data->ioc_obdo2.o_stripe_idx;
2028 fid->f_seq = data->ioc_obdo1.o_seq;
2029 fid->f_oid = (__u32)data->ioc_obdo1.o_id;
2031 rc = echo_create_md_object(env, ed, parent, fid, name, namelen,
2032 id, mode, count, stripe_count,
2036 case ECHO_MD_DESTROY:
2037 case ECHO_MD_RMDIR: {
2038 __u32 mode = data->ioc_obdo2.o_mode;
2040 rc = echo_destroy_object(env, ed, parent, name, namelen,
2044 case ECHO_MD_LOOKUP:
2045 rc = echo_lookup_object(env, ed, parent, id, count);
2047 case ECHO_MD_GETATTR:
2048 rc = echo_getattr_object(env, ed, parent, id, count);
2050 case ECHO_MD_SETATTR:
2051 rc = echo_setattr_object(env, ed, parent, id, count);
2054 CERROR("unknown command %d\n", command);
2059 OBD_FREE(name, namelen + 1);
2060 lu_object_put(env, parent);
2061 cl_env_put(env, &refcheck);
2065 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
2066 int on_target, struct obdo *oa, void *ulsm,
2067 int ulsm_nob, struct obd_trans_info *oti)
2069 struct echo_object *eco;
2070 struct echo_client_obd *ec = ed->ed_ec;
2071 struct lov_stripe_md *lsm = NULL;
2076 if ((oa->o_valid & OBD_MD_FLID) == 0 && /* no obj id */
2077 (on_target || /* set_stripe */
2078 ec->ec_nstripes != 0)) { /* LOV */
2079 CERROR ("No valid oid\n");
2083 rc = obd_alloc_memmd(ec->ec_exp, &lsm);
2085 CERROR("Cannot allocate md: rc = %d\n", rc);
2092 rc = echo_copyin_lsm (ed, lsm, ulsm, ulsm_nob);
2096 if (lsm->lsm_stripe_count == 0)
2097 lsm->lsm_stripe_count = ec->ec_nstripes;
2099 if (lsm->lsm_stripe_size == 0)
2100 lsm->lsm_stripe_size = CFS_PAGE_SIZE;
2104 /* setup stripes: indices + default ids if required */
2105 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2106 if (lsm->lsm_oinfo[i]->loi_id == 0)
2107 lsm->lsm_oinfo[i]->loi_id = lsm->lsm_object_id;
2109 lsm->lsm_oinfo[i]->loi_ost_idx =
2110 (idx + i) % ec->ec_nstripes;
2114 /* setup object ID here for !on_target and LOV hint */
2115 if (oa->o_valid & OBD_MD_FLID)
2116 lsm->lsm_object_id = oa->o_id;
2118 if (lsm->lsm_object_id == 0)
2119 lsm->lsm_object_id = ++last_object_id;
2123 /* Only echo objects are allowed to be created */
2124 LASSERT((oa->o_valid & OBD_MD_FLGROUP) &&
2125 (oa->o_seq == FID_SEQ_ECHO));
2126 rc = obd_create(env, ec->ec_exp, oa, &lsm, oti);
2128 CERROR("Cannot create objects: rc = %d\n", rc);
2134 /* See what object ID we were given */
2135 oa->o_id = lsm->lsm_object_id;
2136 oa->o_valid |= OBD_MD_FLID;
2138 eco = cl_echo_object_find(ed, &lsm);
2140 GOTO(failed, rc = PTR_ERR(eco));
2141 cl_echo_object_put(eco);
2143 CDEBUG(D_INFO, "oa->o_id = %lx\n", (long)oa->o_id);
2148 obd_destroy(env, ec->ec_exp, oa, lsm, oti, NULL, NULL);
2150 obd_free_memmd(ec->ec_exp, &lsm);
2152 CERROR("create object failed with: rc = %d\n", rc);
2156 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
2159 struct echo_client_obd *ec = ed->ed_ec;
2160 struct lov_stripe_md *lsm = NULL;
2161 struct echo_object *eco;
2165 if ((oa->o_valid & OBD_MD_FLID) == 0 ||
2166 oa->o_id == 0) /* disallow use of object id 0 */
2168 CERROR ("No valid oid\n");
2172 rc = obd_alloc_memmd(ec->ec_exp, &lsm);
2176 lsm->lsm_object_id = oa->o_id;
2177 if (oa->o_valid & OBD_MD_FLGROUP)
2178 lsm->lsm_object_seq = oa->o_seq;
2180 lsm->lsm_object_seq = FID_SEQ_ECHO;
2183 eco = cl_echo_object_find(ed, &lsm);
2189 obd_free_memmd(ec->ec_exp, &lsm);
2193 static void echo_put_object(struct echo_object *eco)
2195 if (cl_echo_object_put(eco))
2196 CERROR("echo client: drop an object failed");
2200 echo_get_stripe_off_id (struct lov_stripe_md *lsm, obd_off *offp, obd_id *idp)
2202 unsigned long stripe_count;
2203 unsigned long stripe_size;
2204 unsigned long width;
2205 unsigned long woffset;
2209 if (lsm->lsm_stripe_count <= 1)
2213 stripe_size = lsm->lsm_stripe_size;
2214 stripe_count = lsm->lsm_stripe_count;
2216 /* width = # bytes in all stripes */
2217 width = stripe_size * stripe_count;
2219 /* woffset = offset within a width; offset = whole number of widths */
2220 woffset = do_div (offset, width);
2222 stripe_index = woffset / stripe_size;
2224 *idp = lsm->lsm_oinfo[stripe_index]->loi_id;
2225 *offp = offset * stripe_size + woffset % stripe_size;
2229 echo_client_page_debug_setup(struct lov_stripe_md *lsm,
2230 cfs_page_t *page, int rw, obd_id id,
2231 obd_off offset, obd_off count)
2238 /* no partial pages on the client */
2239 LASSERT(count == CFS_PAGE_SIZE);
2241 addr = cfs_kmap(page);
2243 for (delta = 0; delta < CFS_PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2244 if (rw == OBD_BRW_WRITE) {
2245 stripe_off = offset + delta;
2247 echo_get_stripe_off_id(lsm, &stripe_off, &stripe_id);
2249 stripe_off = 0xdeadbeef00c0ffeeULL;
2250 stripe_id = 0xdeadbeef00c0ffeeULL;
2252 block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE,
2253 stripe_off, stripe_id);
2259 static int echo_client_page_debug_check(struct lov_stripe_md *lsm,
2260 cfs_page_t *page, obd_id id,
2261 obd_off offset, obd_off count)
2270 /* no partial pages on the client */
2271 LASSERT(count == CFS_PAGE_SIZE);
2273 addr = cfs_kmap(page);
2275 for (rc = delta = 0; delta < CFS_PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2276 stripe_off = offset + delta;
2278 echo_get_stripe_off_id (lsm, &stripe_off, &stripe_id);
2280 rc2 = block_debug_check("test_brw",
2281 addr + delta, OBD_ECHO_BLOCK_SIZE,
2282 stripe_off, stripe_id);
2284 CERROR ("Error in echo object "LPX64"\n", id);
2293 static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
2294 struct echo_object *eco, obd_off offset,
2295 obd_size count, int async,
2296 struct obd_trans_info *oti)
2298 struct lov_stripe_md *lsm = eco->eo_lsm;
2300 struct brw_page *pga;
2301 struct brw_page *pgp;
2311 verify = ((oa->o_id) != ECHO_PERSISTENT_OBJID &&
2312 (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
2313 (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
2315 gfp_mask = ((oa->o_id & 2) == 0) ? CFS_ALLOC_STD : CFS_ALLOC_HIGHUSER;
2317 LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
2318 LASSERT(lsm != NULL);
2319 LASSERT(lsm->lsm_object_id == oa->o_id);
2322 (count & (~CFS_PAGE_MASK)) != 0)
2325 /* XXX think again with misaligned I/O */
2326 npages = count >> CFS_PAGE_SHIFT;
2328 if (rw == OBD_BRW_WRITE)
2329 brw_flags = OBD_BRW_ASYNC;
2331 OBD_ALLOC(pga, npages * sizeof(*pga));
2335 OBD_ALLOC(pages, npages * sizeof(*pages));
2336 if (pages == NULL) {
2337 OBD_FREE(pga, npages * sizeof(*pga));
2341 for (i = 0, pgp = pga, off = offset;
2343 i++, pgp++, off += CFS_PAGE_SIZE) {
2345 LASSERT (pgp->pg == NULL); /* for cleanup */
2348 OBD_PAGE_ALLOC(pgp->pg, gfp_mask);
2349 if (pgp->pg == NULL)
2353 pgp->count = CFS_PAGE_SIZE;
2355 pgp->flag = brw_flags;
2358 echo_client_page_debug_setup(lsm, pgp->pg, rw,
2359 oa->o_id, off, pgp->count);
2362 /* brw mode can only be used at client */
2363 LASSERT(ed->ed_next != NULL);
2364 rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
2367 if (rc != 0 || rw != OBD_BRW_READ)
2370 for (i = 0, pgp = pga; i < npages; i++, pgp++) {
2371 if (pgp->pg == NULL)
2376 vrc = echo_client_page_debug_check(lsm, pgp->pg, oa->o_id,
2377 pgp->off, pgp->count);
2378 if (vrc != 0 && rc == 0)
2381 OBD_PAGE_FREE(pgp->pg);
2383 OBD_FREE(pga, npages * sizeof(*pga));
2384 OBD_FREE(pages, npages * sizeof(*pages));
2388 static int echo_client_prep_commit(struct obd_export *exp, int rw,
2389 struct obdo *oa, struct echo_object *eco,
2390 obd_off offset, obd_size count,
2391 obd_size batch, struct obd_trans_info *oti,
2394 struct lov_stripe_md *lsm = eco->eo_lsm;
2395 struct obd_ioobj ioo;
2396 struct niobuf_local *lnb;
2397 struct niobuf_remote *rnb;
2399 obd_size npages, tot_pages;
2403 if (count <= 0 || (count & (~CFS_PAGE_MASK)) != 0 ||
2404 (lsm != NULL && lsm->lsm_object_id != oa->o_id))
2407 npages = batch >> CFS_PAGE_SHIFT;
2408 tot_pages = count >> CFS_PAGE_SHIFT;
2410 OBD_ALLOC(lnb, npages * sizeof(struct niobuf_local));
2411 OBD_ALLOC(rnb, npages * sizeof(struct niobuf_remote));
2413 if (lnb == NULL || rnb == NULL)
2414 GOTO(out, ret = -ENOMEM);
2416 obdo_to_ioobj(oa, &ioo);
2420 for(; tot_pages; tot_pages -= npages) {
2423 if (tot_pages < npages)
2426 for (i = 0; i < npages; i++, off += CFS_PAGE_SIZE) {
2427 rnb[i].offset = off;
2428 rnb[i].len = CFS_PAGE_SIZE;
2431 ioo.ioo_bufcnt = npages;
2432 oti->oti_transno = 0;
2435 ret = obd_preprw(NULL, rw, exp, oa, 1, &ioo, rnb, &lpages,
2439 LASSERT(lpages == npages);
2441 for (i = 0; i < lpages; i++) {
2442 cfs_page_t *page = lnb[i].page;
2444 /* read past eof? */
2445 if (page == NULL && lnb[i].rc == 0)
2449 lnb[i].flags |= OBD_BRW_ASYNC;
2451 if (oa->o_id == ECHO_PERSISTENT_OBJID ||
2452 (oa->o_valid & OBD_MD_FLFLAGS) == 0 ||
2453 (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0)
2456 if (rw == OBD_BRW_WRITE)
2457 echo_client_page_debug_setup(lsm, page, rw,
2462 echo_client_page_debug_check(lsm, page,
2468 ret = obd_commitrw(NULL, rw, exp, oa, 1, &ioo,
2469 rnb, npages, lnb, oti, ret);
2473 /* Reset oti otherwise it would confuse ldiskfs. */
2474 memset(oti, 0, sizeof(*oti));
2479 OBD_FREE(lnb, npages * sizeof(struct niobuf_local));
2481 OBD_FREE(rnb, npages * sizeof(struct niobuf_remote));
2485 static int echo_client_brw_ioctl(int rw, struct obd_export *exp,
2486 struct obd_ioctl_data *data)
2488 struct obd_device *obd = class_exp2obd(exp);
2489 struct echo_device *ed = obd2echo_dev(obd);
2490 struct echo_client_obd *ec = ed->ed_ec;
2491 struct obd_trans_info dummy_oti = { 0 };
2492 struct obdo *oa = &data->ioc_obdo1;
2493 struct echo_object *eco;
2499 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
2501 rc = echo_get_object(&eco, ed, oa);
2505 oa->o_valid &= ~OBD_MD_FLHANDLE;
2507 /* obdfilter doesn't support obd_brw now, simulate via prep + commit */
2508 test_mode = (long)data->ioc_pbuf1;
2512 if (ed->ed_next == NULL && test_mode != 3) {
2514 data->ioc_plen1 = data->ioc_count;
2517 /* Truncate batch size to maximum */
2518 if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE)
2519 data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE;
2521 switch (test_mode) {
2525 rc = echo_client_kbrw(ed, rw, oa,
2526 eco, data->ioc_offset,
2527 data->ioc_count, async, &dummy_oti);
2530 rc = echo_client_prep_commit(ec->ec_exp, rw, oa,
2531 eco, data->ioc_offset,
2532 data->ioc_count, data->ioc_plen1,
2538 echo_put_object(eco);
2543 echo_client_enqueue(struct obd_export *exp, struct obdo *oa,
2544 int mode, obd_off offset, obd_size nob)
2546 struct echo_device *ed = obd2echo_dev(exp->exp_obd);
2547 struct lustre_handle *ulh = &oa->o_handle;
2548 struct echo_object *eco;
2553 if (ed->ed_next == NULL)
2554 RETURN(-EOPNOTSUPP);
2556 if (!(mode == LCK_PR || mode == LCK_PW))
2559 if ((offset & (~CFS_PAGE_MASK)) != 0 ||
2560 (nob & (~CFS_PAGE_MASK)) != 0)
2563 rc = echo_get_object (&eco, ed, oa);
2567 end = (nob == 0) ? ((obd_off) -1) : (offset + nob - 1);
2568 rc = cl_echo_enqueue(eco, offset, end, mode, &ulh->cookie);
2570 oa->o_valid |= OBD_MD_FLHANDLE;
2571 CDEBUG(D_INFO, "Cookie is "LPX64"\n", ulh->cookie);
2573 echo_put_object(eco);
2578 echo_client_cancel(struct obd_export *exp, struct obdo *oa)
2580 struct echo_device *ed = obd2echo_dev(exp->exp_obd);
2581 __u64 cookie = oa->o_handle.cookie;
2583 if ((oa->o_valid & OBD_MD_FLHANDLE) == 0)
2586 CDEBUG(D_INFO, "Cookie is "LPX64"\n", cookie);
2587 return cl_echo_cancel(ed, cookie);
2591 echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2592 void *karg, void *uarg)
2594 struct obd_device *obd = exp->exp_obd;
2595 struct echo_device *ed = obd2echo_dev(obd);
2596 struct echo_client_obd *ec = ed->ed_ec;
2597 struct echo_object *eco;
2598 struct obd_ioctl_data *data = karg;
2599 struct obd_trans_info dummy_oti;
2601 struct oti_req_ack_lock *ack_lock;
2604 int rw = OBD_BRW_READ;
2609 memset(&dummy_oti, 0, sizeof(dummy_oti));
2611 oa = &data->ioc_obdo1;
2612 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
2613 oa->o_valid |= OBD_MD_FLGROUP;
2614 oa->o_seq = FID_SEQ_ECHO;
2617 /* This FID is unpacked just for validation at this point */
2618 rc = fid_ostid_unpack(&fid, &oa->o_oi, 0);
2626 rc = lu_env_init(env, LCT_DT_THREAD);
2628 GOTO(out, rc = -ENOMEM);
2631 case OBD_IOC_CREATE: /* may create echo object */
2632 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2633 GOTO (out, rc = -EPERM);
2635 rc = echo_create_object(env, ed, 1, oa, data->ioc_pbuf1,
2636 data->ioc_plen1, &dummy_oti);
2639 case OBD_IOC_ECHO_MD: {
2646 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2647 GOTO(out, rc = -EPERM);
2649 count = data->ioc_count;
2650 cmd = data->ioc_command;
2652 id = data->ioc_obdo2.o_id;
2654 dirlen = data->ioc_plen1;
2655 OBD_ALLOC(dir, dirlen + 1);
2657 GOTO(out, rc = -ENOMEM);
2659 if (cfs_copy_from_user(dir, data->ioc_pbuf1, dirlen)) {
2660 OBD_FREE(dir, data->ioc_plen1 + 1);
2661 GOTO(out, rc = -EFAULT);
2664 rc = echo_md_handler(ed, cmd, dir, dirlen, id, count, data);
2665 OBD_FREE(dir, dirlen + 1);
2668 case OBD_IOC_ECHO_ALLOC_SEQ: {
2669 struct lu_env *cl_env;
2674 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2675 GOTO(out, rc = -EPERM);
2677 cl_env = cl_env_get(&refcheck);
2679 GOTO(out, rc = PTR_ERR(cl_env));
2681 rc = lu_env_refill_by_tags(cl_env, ECHO_MD_CTX_TAG,
2684 cl_env_put(cl_env, &refcheck);
2688 rc = seq_client_get_seq(cl_env, ed->ed_cl_seq, &seq);
2689 cl_env_put(cl_env, &refcheck);
2691 CERROR("%s: Can not alloc seq: rc = %d\n",
2696 if (cfs_copy_to_user(data->ioc_pbuf1, &seq, data->ioc_plen1))
2699 max_count = LUSTRE_SEQ_MAX_WIDTH;
2700 if (cfs_copy_to_user(data->ioc_pbuf2, &max_count,
2705 case OBD_IOC_DESTROY:
2706 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2707 GOTO (out, rc = -EPERM);
2709 rc = echo_get_object(&eco, ed, oa);
2711 rc = obd_destroy(env, ec->ec_exp, oa, eco->eo_lsm,
2712 &dummy_oti, NULL, NULL);
2714 eco->eo_deleted = 1;
2715 echo_put_object(eco);
2719 case OBD_IOC_GETATTR:
2720 rc = echo_get_object(&eco, ed, oa);
2722 struct obd_info oinfo = { { { 0 } } };
2723 oinfo.oi_md = eco->eo_lsm;
2725 rc = obd_getattr(env, ec->ec_exp, &oinfo);
2726 echo_put_object(eco);
2730 case OBD_IOC_SETATTR:
2731 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2732 GOTO (out, rc = -EPERM);
2734 rc = echo_get_object(&eco, ed, oa);
2736 struct obd_info oinfo = { { { 0 } } };
2738 oinfo.oi_md = eco->eo_lsm;
2740 rc = obd_setattr(env, ec->ec_exp, &oinfo, NULL);
2741 echo_put_object(eco);
2745 case OBD_IOC_BRW_WRITE:
2746 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2747 GOTO (out, rc = -EPERM);
2751 case OBD_IOC_BRW_READ:
2752 rc = echo_client_brw_ioctl(rw, exp, data);
2755 case ECHO_IOC_GET_STRIPE:
2756 rc = echo_get_object(&eco, ed, oa);
2758 rc = echo_copyout_lsm(eco->eo_lsm, data->ioc_pbuf1,
2760 echo_put_object(eco);
2764 case ECHO_IOC_SET_STRIPE:
2765 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2766 GOTO (out, rc = -EPERM);
2768 if (data->ioc_pbuf1 == NULL) { /* unset */
2769 rc = echo_get_object(&eco, ed, oa);
2771 eco->eo_deleted = 1;
2772 echo_put_object(eco);
2775 rc = echo_create_object(env, ed, 0, oa,
2777 data->ioc_plen1, &dummy_oti);
2781 case ECHO_IOC_ENQUEUE:
2782 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2783 GOTO (out, rc = -EPERM);
2785 rc = echo_client_enqueue(exp, oa,
2786 data->ioc_conn1, /* lock mode */
2788 data->ioc_count);/*extent*/
2791 case ECHO_IOC_CANCEL:
2792 rc = echo_client_cancel(exp, oa);
2796 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd);
2797 GOTO (out, rc = -ENOTTY);
2805 /* XXX this should be in a helper also called by target_send_reply */
2806 for (ack_lock = dummy_oti.oti_ack_locks, i = 0; i < 4;
2808 if (!ack_lock->mode)
2810 ldlm_lock_decref(&ack_lock->lock, ack_lock->mode);
2816 static int echo_client_setup(const struct lu_env *env,
2817 struct obd_device *obddev, struct lustre_cfg *lcfg)
2819 struct echo_client_obd *ec = &obddev->u.echo_client;
2820 struct obd_device *tgt;
2821 struct obd_uuid echo_uuid = { "ECHO_UUID" };
2822 struct obd_connect_data *ocd = NULL;
2826 if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2827 CERROR("requires a TARGET OBD name\n");
2831 tgt = class_name2obd(lustre_cfg_string(lcfg, 1));
2832 if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) {
2833 CERROR("device not attached or not set up (%s)\n",
2834 lustre_cfg_string(lcfg, 1));
2838 cfs_spin_lock_init (&ec->ec_lock);
2839 CFS_INIT_LIST_HEAD (&ec->ec_objects);
2840 CFS_INIT_LIST_HEAD (&ec->ec_locks);
2842 ec->ec_nstripes = 0;
2844 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
2845 lu_context_tags_update(ECHO_MD_CTX_TAG);
2846 lu_session_tags_update(ECHO_MD_SES_TAG);
2850 OBD_ALLOC(ocd, sizeof(*ocd));
2852 CERROR("Can't alloc ocd connecting to %s\n",
2853 lustre_cfg_string(lcfg, 1));
2857 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
2858 OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
2859 OBD_CONNECT_64BITHASH;
2860 ocd->ocd_version = LUSTRE_VERSION_CODE;
2861 ocd->ocd_group = FID_SEQ_ECHO;
2863 rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
2865 /* Turn off pinger because it connects to tgt obd directly. */
2866 cfs_spin_lock(&tgt->obd_dev_lock);
2867 cfs_list_del_init(&ec->ec_exp->exp_obd_chain_timed);
2868 cfs_spin_unlock(&tgt->obd_dev_lock);
2871 OBD_FREE(ocd, sizeof(*ocd));
2874 CERROR("fail to connect to device %s\n",
2875 lustre_cfg_string(lcfg, 1));
2882 static int echo_client_cleanup(struct obd_device *obddev)
2884 struct echo_device *ed = obd2echo_dev(obddev);
2885 struct echo_client_obd *ec = &obddev->u.echo_client;
2889 /*Do nothing for Metadata echo client*/
2893 if (ed->ed_next_ismd) {
2894 lu_context_tags_clear(ECHO_MD_CTX_TAG);
2895 lu_session_tags_clear(ECHO_MD_SES_TAG);
2899 if (!cfs_list_empty(&obddev->obd_exports)) {
2900 CERROR("still has clients!\n");
2904 LASSERT(cfs_atomic_read(&ec->ec_exp->exp_refcount) > 0);
2905 rc = obd_disconnect(ec->ec_exp);
2907 CERROR("fail to disconnect device: %d\n", rc);
2912 static int echo_client_connect(const struct lu_env *env,
2913 struct obd_export **exp,
2914 struct obd_device *src, struct obd_uuid *cluuid,
2915 struct obd_connect_data *data, void *localdata)
2918 struct lustre_handle conn = { 0 };
2921 rc = class_connect(&conn, src, cluuid);
2923 *exp = class_conn2export(&conn);
2929 static int echo_client_disconnect(struct obd_export *exp)
2932 struct obd_device *obd;
2933 struct echo_client_obd *ec;
2934 struct ec_lock *ecl;
2940 GOTO(out, rc = -EINVAL);
2944 ec = &obd->u.echo_client;
2946 /* no more contention on export's lock list */
2947 while (!cfs_list_empty (&exp->exp_ec_data.eced_locks)) {
2948 ecl = cfs_list_entry (exp->exp_ec_data.eced_locks.next,
2949 struct ec_lock, ecl_exp_chain);
2950 cfs_list_del (&ecl->ecl_exp_chain);
2952 rc = obd_cancel(ec->ec_exp, ecl->ecl_object->eco_lsm,
2953 ecl->ecl_mode, &ecl->ecl_lock_handle);
2955 CDEBUG (D_INFO, "Cancel lock on object "LPX64" on disconnect "
2956 "(%d)\n", ecl->ecl_object->eco_id, rc);
2958 echo_put_object (ecl->ecl_object);
2959 OBD_FREE (ecl, sizeof (*ecl));
2963 rc = class_disconnect(exp);
2969 static struct obd_ops echo_client_obd_ops = {
2970 .o_owner = THIS_MODULE,
2973 .o_setup = echo_client_setup,
2974 .o_cleanup = echo_client_cleanup,
2977 .o_iocontrol = echo_client_iocontrol,
2978 .o_connect = echo_client_connect,
2979 .o_disconnect = echo_client_disconnect
2982 int echo_client_init(void)
2984 struct lprocfs_static_vars lvars = { 0 };
2987 lprocfs_echo_init_vars(&lvars);
2989 rc = lu_kmem_init(echo_caches);
2991 rc = class_register_type(&echo_client_obd_ops, NULL,
2993 LUSTRE_ECHO_CLIENT_NAME,
2996 lu_kmem_fini(echo_caches);
3001 void echo_client_exit(void)
3003 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
3004 lu_kmem_fini(echo_caches);
3008 static int __init obdecho_init(void)
3010 struct lprocfs_static_vars lvars;
3014 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
3016 LASSERT(CFS_PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
3018 lprocfs_echo_init_vars(&lvars);
3020 # ifdef HAVE_SERVER_SUPPORT
3021 rc = echo_persistent_pages_init();
3025 rc = class_register_type(&echo_obd_ops, NULL, lvars.module_vars,
3026 LUSTRE_ECHO_NAME, NULL);
3031 rc = echo_client_init();
3033 # ifdef HAVE_SERVER_SUPPORT
3037 class_unregister_type(LUSTRE_ECHO_NAME);
3039 echo_persistent_pages_fini();
3045 static void /*__exit*/ obdecho_exit(void)
3049 # ifdef HAVE_SERVER_SUPPORT
3050 class_unregister_type(LUSTRE_ECHO_NAME);
3051 echo_persistent_pages_fini();
3055 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3056 MODULE_DESCRIPTION("Lustre Testing Echo OBD driver");
3057 MODULE_LICENSE("GPL");
3059 cfs_module(obdecho, LUSTRE_VERSION_STRING, obdecho_init, obdecho_exit);
3060 #endif /* __KERNEL__ */
3062 /** @} echo_client */