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;
531 LASSERT(cfs_atomic_read(&eco->eo_npages) == 0);
533 cfs_spin_lock(&ec->ec_lock);
534 cfs_list_del_init(&eco->eo_obj_chain);
535 cfs_spin_unlock(&ec->ec_lock);
538 lu_object_header_fini(obj->lo_header);
541 obd_free_memmd(ec->ec_exp, &eco->eo_lsm);
542 OBD_SLAB_FREE_PTR(eco, echo_object_kmem);
546 static int echo_object_print(const struct lu_env *env, void *cookie,
547 lu_printer_t p, const struct lu_object *o)
549 struct echo_object *obj = cl2echo_obj(lu2cl(o));
551 return (*p)(env, cookie, "echoclient-object@%p", obj);
554 static const struct lu_object_operations echo_lu_obj_ops = {
555 .loo_object_init = echo_object_init,
556 .loo_object_delete = NULL,
557 .loo_object_release = NULL,
558 .loo_object_free = echo_object_free,
559 .loo_object_print = echo_object_print,
560 .loo_object_invariant = NULL
562 /** @} echo_lu_ops */
564 /** \defgroup echo_lu_dev_ops lu_device operations
566 * Operations for echo lu device.
570 static struct lu_object *echo_object_alloc(const struct lu_env *env,
571 const struct lu_object_header *hdr,
572 struct lu_device *dev)
574 struct echo_object *eco;
575 struct lu_object *obj = NULL;
578 /* we're the top dev. */
579 LASSERT(hdr == NULL);
580 OBD_SLAB_ALLOC_PTR_GFP(eco, echo_object_kmem, CFS_ALLOC_IO);
582 struct cl_object_header *hdr = &eco->eo_hdr;
584 obj = &echo_obj2cl(eco)->co_lu;
585 cl_object_header_init(hdr);
586 lu_object_init(obj, &hdr->coh_lu, dev);
587 lu_object_add_top(&hdr->coh_lu, obj);
589 eco->eo_cl.co_ops = &echo_cl_obj_ops;
590 obj->lo_ops = &echo_lu_obj_ops;
595 static struct lu_device_operations echo_device_lu_ops = {
596 .ldo_object_alloc = echo_object_alloc,
599 /** @} echo_lu_dev_ops */
601 static struct cl_device_operations echo_device_cl_ops = {
604 /** \defgroup echo_init Setup and teardown
606 * Init and fini functions for echo client.
610 static int echo_site_init(const struct lu_env *env, struct echo_device *ed)
612 struct cl_site *site = &ed->ed_site_myself;
615 /* initialize site */
616 rc = cl_site_init(site, &ed->ed_cl);
618 CERROR("Cannot initilize site for echo client(%d)\n", rc);
622 rc = lu_site_init_finish(&site->cs_lu);
630 static void echo_site_fini(const struct lu_env *env, struct echo_device *ed)
633 if (!ed->ed_next_ismd)
634 cl_site_fini(ed->ed_site);
639 static void *echo_thread_key_init(const struct lu_context *ctx,
640 struct lu_context_key *key)
642 struct echo_thread_info *info;
644 OBD_SLAB_ALLOC_PTR_GFP(info, echo_thread_kmem, CFS_ALLOC_IO);
646 info = ERR_PTR(-ENOMEM);
650 static void echo_thread_key_fini(const struct lu_context *ctx,
651 struct lu_context_key *key, void *data)
653 struct echo_thread_info *info = data;
654 OBD_SLAB_FREE_PTR(info, echo_thread_kmem);
657 static void echo_thread_key_exit(const struct lu_context *ctx,
658 struct lu_context_key *key, void *data)
662 static struct lu_context_key echo_thread_key = {
663 .lct_tags = LCT_CL_THREAD,
664 .lct_init = echo_thread_key_init,
665 .lct_fini = echo_thread_key_fini,
666 .lct_exit = echo_thread_key_exit
669 static void *echo_session_key_init(const struct lu_context *ctx,
670 struct lu_context_key *key)
672 struct echo_session_info *session;
674 OBD_SLAB_ALLOC_PTR_GFP(session, echo_session_kmem, CFS_ALLOC_IO);
676 session = ERR_PTR(-ENOMEM);
680 static void echo_session_key_fini(const struct lu_context *ctx,
681 struct lu_context_key *key, void *data)
683 struct echo_session_info *session = data;
684 OBD_SLAB_FREE_PTR(session, echo_session_kmem);
687 static void echo_session_key_exit(const struct lu_context *ctx,
688 struct lu_context_key *key, void *data)
692 static struct lu_context_key echo_session_key = {
693 .lct_tags = LCT_SESSION,
694 .lct_init = echo_session_key_init,
695 .lct_fini = echo_session_key_fini,
696 .lct_exit = echo_session_key_exit
699 LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key);
701 #define ECHO_SEQ_WIDTH 0xffffffff
702 static int echo_fid_init(struct echo_device *ed, char *obd_name,
709 OBD_ALLOC_PTR(ed->ed_cl_seq);
710 if (ed->ed_cl_seq == NULL)
713 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
715 GOTO(out_free_seq, rc = -ENOMEM);
717 snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s", obd_name);
719 /* Init client side sequence-manager */
720 rc = seq_client_init(ed->ed_cl_seq, NULL,
722 prefix, ms->ms_server_seq);
723 ed->ed_cl_seq->lcs_width = ECHO_SEQ_WIDTH;
724 OBD_FREE(prefix, MAX_OBD_NAME + 5);
726 GOTO(out_free_seq, rc);
731 OBD_FREE_PTR(ed->ed_cl_seq);
732 ed->ed_cl_seq = NULL;
736 static int echo_fid_fini(struct obd_device *obddev)
738 struct echo_device *ed = obd2echo_dev(obddev);
741 if (ed->ed_cl_seq != NULL) {
742 seq_client_fini(ed->ed_cl_seq);
743 OBD_FREE_PTR(ed->ed_cl_seq);
744 ed->ed_cl_seq = NULL;
750 static struct lu_device *echo_device_alloc(const struct lu_env *env,
751 struct lu_device_type *t,
752 struct lustre_cfg *cfg)
754 struct lu_device *next;
755 struct echo_device *ed;
756 struct cl_device *cd;
757 struct obd_device *obd = NULL; /* to keep compiler happy */
758 struct obd_device *tgt;
759 const char *tgt_type_name;
766 GOTO(out, rc = -ENOMEM);
770 rc = cl_device_init(cd, t);
774 cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
775 cd->cd_ops = &echo_device_cl_ops;
778 obd = class_name2obd(lustre_cfg_string(cfg, 0));
779 LASSERT(obd != NULL);
780 LASSERT(env != NULL);
782 tgt = class_name2obd(lustre_cfg_string(cfg, 1));
784 CERROR("Can not find tgt device %s\n",
785 lustre_cfg_string(cfg, 1));
786 GOTO(out, rc = -ENODEV);
789 next = tgt->obd_lu_dev;
790 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
791 ed->ed_next_ismd = 1;
793 ed->ed_next_ismd = 0;
794 rc = echo_site_init(env, ed);
800 rc = echo_client_setup(env, obd, cfg);
804 ed->ed_ec = &obd->u.echo_client;
807 if (ed->ed_next_ismd) {
808 /* Suppose to connect to some Metadata layer */
810 struct lu_device *ld;
814 CERROR("%s is not lu device type!\n",
815 lustre_cfg_string(cfg, 1));
816 GOTO(out, rc = -EINVAL);
819 tgt_type_name = lustre_cfg_string(cfg, 2);
820 if (!tgt_type_name) {
821 CERROR("%s no type name for echo %s setup\n",
822 lustre_cfg_string(cfg, 1),
823 tgt->obd_type->typ_name);
824 GOTO(out, rc = -EINVAL);
829 cfs_spin_lock(&ls->ls_ld_lock);
830 cfs_list_for_each_entry(ld, &ls->ls_ld_linkage, ld_linkage) {
831 if (strcmp(ld->ld_type->ldt_name, tgt_type_name) == 0) {
836 cfs_spin_unlock(&ls->ls_ld_lock);
839 CERROR("%s is not lu device type!\n",
840 lustre_cfg_string(cfg, 1));
841 GOTO(out, rc = -EINVAL);
845 /* For MD echo client, it will use the site in MDS stack */
846 ed->ed_site_myself.cs_lu = *ls;
847 ed->ed_site = &ed->ed_site_myself;
848 ed->ed_cl.cd_lu_dev.ld_site = &ed->ed_site_myself.cs_lu;
849 rc = echo_fid_init(ed, obd->obd_name, lu_site2md(ls));
851 CERROR("echo fid init error %d\n", rc);
855 /* if echo client is to be stacked upon ost device, the next is
856 * NULL since ost is not a clio device so far */
857 if (next != NULL && !lu_device_is_cl(next))
860 tgt_type_name = tgt->obd_type->typ_name;
862 LASSERT(next != NULL);
863 if (next->ld_site != NULL)
864 GOTO(out, rc = -EBUSY);
866 next->ld_site = &ed->ed_site->cs_lu;
867 rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
868 next->ld_type->ldt_name,
873 /* Tricky case, I have to determine the obd type since
874 * CLIO uses the different parameters to initialize
875 * objects for lov & osc. */
876 if (strcmp(tgt_type_name, LUSTRE_LOV_NAME) == 0)
877 ed->ed_next_islov = 1;
879 LASSERT(strcmp(tgt_type_name,
880 LUSTRE_OSC_NAME) == 0);
882 LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0);
886 RETURN(&cd->cd_lu_dev);
891 rc2 = echo_client_cleanup(obd);
893 CERROR("Cleanup obd device %s error(%d)\n",
898 echo_site_fini(env, ed);
900 cl_device_fini(&ed->ed_cl);
910 static int echo_device_init(const struct lu_env *env, struct lu_device *d,
911 const char *name, struct lu_device *next)
917 static struct lu_device *echo_device_fini(const struct lu_env *env,
920 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
921 struct lu_device *next = ed->ed_next;
923 while (next && !ed->ed_next_ismd)
924 next = next->ld_type->ldt_ops->ldto_device_fini(env, next);
928 static void echo_lock_release(const struct lu_env *env,
929 struct echo_lock *ecl,
932 struct cl_lock *clk = echo_lock2cl(ecl);
936 cl_lock_release(env, clk, "ec enqueue", ecl->el_object);
938 cl_lock_mutex_get(env, clk);
939 cl_lock_cancel(env, clk);
940 cl_lock_delete(env, clk);
941 cl_lock_mutex_put(env, clk);
943 cl_lock_put(env, clk);
946 static struct lu_device *echo_device_free(const struct lu_env *env,
949 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
950 struct echo_client_obd *ec = ed->ed_ec;
951 struct echo_object *eco;
952 struct lu_device *next = ed->ed_next;
954 CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n",
957 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
959 /* check if there are objects still alive.
960 * It shouldn't have any object because lu_site_purge would cleanup
961 * all of cached objects. Anyway, probably the echo device is being
962 * parallelly accessed.
964 cfs_spin_lock(&ec->ec_lock);
965 cfs_list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain)
967 cfs_spin_unlock(&ec->ec_lock);
970 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
973 "Waiting for the reference of echo object to be dropped\n");
975 /* Wait for the last reference to be dropped. */
976 cfs_spin_lock(&ec->ec_lock);
977 while (!cfs_list_empty(&ec->ec_objects)) {
978 cfs_spin_unlock(&ec->ec_lock);
979 CERROR("echo_client still has objects at cleanup time, "
980 "wait for 1 second\n");
981 cfs_schedule_timeout_and_set_state(CFS_TASK_UNINT,
982 cfs_time_seconds(1));
983 lu_site_purge(env, &ed->ed_site->cs_lu, -1);
984 cfs_spin_lock(&ec->ec_lock);
986 cfs_spin_unlock(&ec->ec_lock);
988 LASSERT(cfs_list_empty(&ec->ec_locks));
990 CDEBUG(D_INFO, "No object exists, exiting...\n");
992 echo_client_cleanup(d->ld_obd);
993 echo_fid_fini(d->ld_obd);
994 while (next && !ed->ed_next_ismd)
995 next = next->ld_type->ldt_ops->ldto_device_free(env, next);
997 LASSERT(ed->ed_site == lu2cl_site(d->ld_site));
998 echo_site_fini(env, ed);
999 cl_device_fini(&ed->ed_cl);
1005 static const struct lu_device_type_operations echo_device_type_ops = {
1006 .ldto_init = echo_type_init,
1007 .ldto_fini = echo_type_fini,
1009 .ldto_start = echo_type_start,
1010 .ldto_stop = echo_type_stop,
1012 .ldto_device_alloc = echo_device_alloc,
1013 .ldto_device_free = echo_device_free,
1014 .ldto_device_init = echo_device_init,
1015 .ldto_device_fini = echo_device_fini
1018 static struct lu_device_type echo_device_type = {
1019 .ldt_tags = LU_DEVICE_CL,
1020 .ldt_name = LUSTRE_ECHO_CLIENT_NAME,
1021 .ldt_ops = &echo_device_type_ops,
1022 .ldt_ctx_tags = LCT_CL_THREAD | LCT_MD_THREAD | LCT_DT_THREAD,
1026 /** \defgroup echo_exports Exported operations
1028 * exporting functions to echo client
1033 /* Interfaces to echo client obd device */
1034 static struct echo_object *cl_echo_object_find(struct echo_device *d,
1035 struct lov_stripe_md **lsmp)
1038 struct echo_thread_info *info;
1039 struct echo_object_conf *conf;
1040 struct lov_stripe_md *lsm;
1041 struct echo_object *eco;
1042 struct cl_object *obj;
1050 LASSERT(lsm->lsm_object_id);
1052 /* Never return an object if the obd is to be freed. */
1053 if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
1054 RETURN(ERR_PTR(-ENODEV));
1056 env = cl_env_get(&refcheck);
1058 RETURN((void *)env);
1060 info = echo_env_info(env);
1061 conf = &info->eti_conf;
1063 if (!d->ed_next_islov) {
1064 struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
1065 LASSERT(oinfo != NULL);
1066 oinfo->loi_id = lsm->lsm_object_id;
1067 oinfo->loi_seq = lsm->lsm_object_seq;
1068 conf->eoc_cl.u.coc_oinfo = oinfo;
1070 struct lustre_md *md;
1072 memset(md, 0, sizeof *md);
1074 conf->eoc_cl.u.coc_md = md;
1077 conf->eoc_md = lsmp;
1079 fid = &info->eti_fid;
1082 /* In the function below, .hs_keycmp resolves to
1083 * lu_obj_hop_keycmp() */
1084 /* coverity[overrun-buffer-val] */
1085 obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl);
1087 GOTO(out, eco = (void*)obj);
1089 eco = cl2echo_obj(obj);
1090 if (eco->eo_deleted) {
1091 cl_object_put(env, obj);
1092 eco = ERR_PTR(-EAGAIN);
1096 cl_env_put(env, &refcheck);
1100 static int cl_echo_object_put(struct echo_object *eco)
1103 struct cl_object *obj = echo_obj2cl(eco);
1107 env = cl_env_get(&refcheck);
1109 RETURN(PTR_ERR(env));
1111 /* an external function to kill an object? */
1112 if (eco->eo_deleted) {
1113 struct lu_object_header *loh = obj->co_lu.lo_header;
1114 LASSERT(&eco->eo_hdr == luh2coh(loh));
1115 cfs_set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
1118 cl_object_put(env, obj);
1119 cl_env_put(env, &refcheck);
1123 static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco,
1124 obd_off start, obd_off end, int mode,
1125 __u64 *cookie , __u32 enqflags)
1128 struct cl_lock *lck;
1129 struct cl_object *obj;
1130 struct cl_lock_descr *descr;
1131 struct echo_thread_info *info;
1135 info = echo_env_info(env);
1137 descr = &info->eti_descr;
1138 obj = echo_obj2cl(eco);
1140 descr->cld_obj = obj;
1141 descr->cld_start = cl_index(obj, start);
1142 descr->cld_end = cl_index(obj, end);
1143 descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ;
1144 descr->cld_enq_flags = enqflags;
1147 lck = cl_lock_request(env, io, descr, "ec enqueue", eco);
1149 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
1150 struct echo_lock *el;
1152 rc = cl_wait(env, lck);
1154 el = cl2echo_lock(cl_lock_at(lck, &echo_device_type));
1155 cfs_spin_lock(&ec->ec_lock);
1156 if (cfs_list_empty(&el->el_chain)) {
1157 cfs_list_add(&el->el_chain, &ec->ec_locks);
1158 el->el_cookie = ++ec->ec_unique;
1160 cfs_atomic_inc(&el->el_refcount);
1161 *cookie = el->el_cookie;
1162 cfs_spin_unlock(&ec->ec_lock);
1164 cl_lock_release(env, lck, "ec enqueue", cfs_current());
1169 static int cl_echo_enqueue(struct echo_object *eco, obd_off start, obd_off end,
1170 int mode, __u64 *cookie)
1172 struct echo_thread_info *info;
1179 env = cl_env_get(&refcheck);
1181 RETURN(PTR_ERR(env));
1183 info = echo_env_info(env);
1186 io->ci_ignore_layout = 1;
1187 result = cl_io_init(env, io, CIT_MISC, echo_obj2cl(eco));
1190 LASSERT(result == 0);
1192 result = cl_echo_enqueue0(env, eco, start, end, mode, cookie, 0);
1193 cl_io_fini(env, io);
1197 cl_env_put(env, &refcheck);
1201 static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed,
1204 struct echo_client_obd *ec = ed->ed_ec;
1205 struct echo_lock *ecl = NULL;
1207 int found = 0, still_used = 0;
1210 LASSERT(ec != NULL);
1211 cfs_spin_lock (&ec->ec_lock);
1212 cfs_list_for_each (el, &ec->ec_locks) {
1213 ecl = cfs_list_entry (el, struct echo_lock, el_chain);
1214 CDEBUG(D_INFO, "ecl: %p, cookie: "LPX64"\n", ecl, ecl->el_cookie);
1215 found = (ecl->el_cookie == cookie);
1217 if (cfs_atomic_dec_and_test(&ecl->el_refcount))
1218 cfs_list_del_init(&ecl->el_chain);
1224 cfs_spin_unlock (&ec->ec_lock);
1229 echo_lock_release(env, ecl, still_used);
1233 static int cl_echo_cancel(struct echo_device *ed, __u64 cookie)
1240 env = cl_env_get(&refcheck);
1242 RETURN(PTR_ERR(env));
1244 rc = cl_echo_cancel0(env, ed, cookie);
1246 cl_env_put(env, &refcheck);
1250 static int cl_echo_async_brw(const struct lu_env *env, struct cl_io *io,
1251 enum cl_req_type unused, struct cl_2queue *queue)
1253 struct cl_page *clp;
1254 struct cl_page *temp;
1258 cl_page_list_for_each_safe(clp, temp, &queue->c2_qin) {
1260 rc = cl_page_cache_add(env, io, clp, CRT_WRITE);
1263 result = result ?: rc;
1268 static int cl_echo_object_brw(struct echo_object *eco, int rw, obd_off offset,
1269 cfs_page_t **pages, int npages, int async)
1272 struct echo_thread_info *info;
1273 struct cl_object *obj = echo_obj2cl(eco);
1274 struct echo_device *ed = eco->eo_dev;
1275 struct cl_2queue *queue;
1277 struct cl_page *clp;
1278 struct lustre_handle lh = { 0 };
1279 int page_size = cl_page_size(obj);
1285 LASSERT((offset & ~CFS_PAGE_MASK) == 0);
1286 LASSERT(ed->ed_next != NULL);
1287 env = cl_env_get(&refcheck);
1289 RETURN(PTR_ERR(env));
1291 info = echo_env_info(env);
1293 queue = &info->eti_queue;
1295 cl_2queue_init(queue);
1297 io->ci_ignore_layout = 1;
1298 rc = cl_io_init(env, io, CIT_MISC, obj);
1304 rc = cl_echo_enqueue0(env, eco, offset,
1305 offset + npages * CFS_PAGE_SIZE - 1,
1306 rw == READ ? LCK_PR : LCK_PW, &lh.cookie,
1309 GOTO(error_lock, rc);
1311 for (i = 0; i < npages; i++) {
1313 clp = cl_page_find(env, obj, cl_index(obj, offset),
1314 pages[i], CPT_TRANSIENT);
1319 LASSERT(clp->cp_type == CPT_TRANSIENT);
1321 rc = cl_page_own(env, io, clp);
1323 LASSERT(clp->cp_state == CPS_FREEING);
1324 cl_page_put(env, clp);
1328 cl_2queue_add(queue, clp);
1330 /* drop the reference count for cl_page_find, so that the page
1331 * will be freed in cl_2queue_fini. */
1332 cl_page_put(env, clp);
1333 cl_page_clip(env, clp, 0, page_size);
1335 offset += page_size;
1339 enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE;
1341 async = async && (typ == CRT_WRITE);
1343 rc = cl_echo_async_brw(env, io, typ, queue);
1345 rc = cl_io_submit_sync(env, io, typ, queue, 0);
1346 CDEBUG(D_INFO, "echo_client %s write returns %d\n",
1347 async ? "async" : "sync", rc);
1350 cl_echo_cancel0(env, ed, lh.cookie);
1353 cl_2queue_discard(env, io, queue);
1354 cl_2queue_disown(env, io, queue);
1355 cl_2queue_fini(env, queue);
1356 cl_io_fini(env, io);
1358 cl_env_put(env, &refcheck);
1361 /** @} echo_exports */
1364 static obd_id last_object_id;
1367 echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
1369 struct lov_stripe_md *ulsm = _ulsm;
1372 nob = offsetof (struct lov_stripe_md, lsm_oinfo[lsm->lsm_stripe_count]);
1376 if (cfs_copy_to_user (ulsm, lsm, sizeof(ulsm)))
1379 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1380 if (cfs_copy_to_user (ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
1381 sizeof(lsm->lsm_oinfo[0])))
1388 echo_copyin_lsm (struct echo_device *ed, struct lov_stripe_md *lsm,
1389 void *ulsm, int ulsm_nob)
1391 struct echo_client_obd *ec = ed->ed_ec;
1394 if (ulsm_nob < sizeof (*lsm))
1397 if (cfs_copy_from_user (lsm, ulsm, sizeof (*lsm)))
1400 if (lsm->lsm_stripe_count > ec->ec_nstripes ||
1401 lsm->lsm_magic != LOV_MAGIC ||
1402 (lsm->lsm_stripe_size & (~CFS_PAGE_MASK)) != 0 ||
1403 ((__u64)lsm->lsm_stripe_size * lsm->lsm_stripe_count > ~0UL))
1407 for (i = 0; i < lsm->lsm_stripe_count; i++) {
1408 if (cfs_copy_from_user(lsm->lsm_oinfo[i],
1409 ((struct lov_stripe_md *)ulsm)-> \
1411 sizeof(lsm->lsm_oinfo[0])))
1417 static inline void echo_md_build_name(struct lu_name *lname, char *name,
1420 sprintf(name, LPU64, id);
1421 lname->ln_name = name;
1422 lname->ln_namelen = strlen(name);
1426 echo_md_create_internal(const struct lu_env *env, struct echo_device *ed,
1427 struct md_object *parent, struct lu_fid *fid,
1428 struct lu_name *lname, struct md_op_spec *spec,
1431 struct lu_object *ec_child, *child;
1432 struct lu_device *ld = ed->ed_next;
1433 struct echo_thread_info *info = echo_env_info(env);
1434 struct lu_fid *fid2 = &info->eti_fid2;
1435 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
1438 rc = mdo_lookup(env, parent, lname, fid2, spec);
1441 else if (rc != -ENOENT)
1444 ec_child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev,
1446 if (IS_ERR(ec_child)) {
1447 CERROR("Can not find the child "DFID": rc = %ld\n", PFID(fid),
1449 return PTR_ERR(ec_child);
1452 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1453 if (child == NULL) {
1454 CERROR("Can not locate the child "DFID"\n", PFID(fid));
1455 GOTO(out_put, rc = -EINVAL);
1458 CDEBUG(D_RPCTRACE, "Start creating object "DFID" %s %p\n",
1459 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1462 * Do not perform lookup sanity check. We know that name does not exist.
1464 spec->sp_cr_lookup = 0;
1465 rc = mdo_create(env, parent, lname, lu2md(child), spec, ma);
1467 CERROR("Can not create child "DFID": rc = %d\n", PFID(fid), rc);
1470 CDEBUG(D_RPCTRACE, "End creating object "DFID" %s %p rc = %d\n",
1471 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent, rc);
1473 lu_object_put(env, ec_child);
1477 static int echo_set_lmm_size(const struct lu_env *env,
1478 struct lu_device *ld,
1479 struct md_attr *ma, int *lmm_size,
1482 struct md_device *md = lu2md_dev(ld);
1487 rc = md->md_ops->mdo_maxsize_get(env, md,
1488 lmm_size, cookie_size);
1492 ma->ma_lmm_size = *lmm_size;
1493 if (*lmm_size > 0) {
1494 OBD_ALLOC(ma->ma_lmm, *lmm_size);
1495 if (ma->ma_lmm == NULL) {
1496 ma->ma_lmm_size = 0;
1501 ma->ma_cookie_size = *cookie_size;
1502 if (*cookie_size > 0) {
1503 OBD_ALLOC(ma->ma_cookie, *cookie_size);
1504 if (ma->ma_cookie == NULL) {
1505 ma->ma_cookie_size = 0;
1513 static int echo_create_md_object(const struct lu_env *env,
1514 struct echo_device *ed,
1515 struct lu_object *ec_parent,
1517 char *name, int namelen,
1518 __u64 id, __u32 mode, int count,
1519 int stripe_count, int stripe_offset)
1521 struct lu_object *parent;
1522 struct echo_thread_info *info = echo_env_info(env);
1523 struct lu_name *lname = &info->eti_lname;
1524 struct md_op_spec *spec = &info->eti_spec;
1525 struct md_attr *ma = &info->eti_ma;
1526 struct lu_device *ld = ed->ed_next;
1529 int cookie_size = 0;
1532 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1533 if (ec_parent == NULL) {
1534 lu_object_put(env, ec_parent);
1535 RETURN(PTR_ERR(parent));
1538 memset(ma, 0, sizeof(*ma));
1539 memset(spec, 0, sizeof(*spec));
1540 if (stripe_count != 0) {
1541 spec->sp_cr_flags |= FMODE_WRITE;
1542 rc = echo_set_lmm_size(env, ld, ma, &lmm_size, &cookie_size);
1545 if (stripe_count != -1) {
1546 struct lov_user_md_v3 *lum = &info->eti_lum;
1547 lum->lmm_magic = LOV_USER_MAGIC_V3;
1548 lum->lmm_stripe_count = stripe_count;
1549 lum->lmm_stripe_offset = stripe_offset;
1550 lum->lmm_pattern = 0;
1551 spec->u.sp_ea.eadata = lum;
1552 spec->u.sp_ea.eadatalen = sizeof(*lum);
1553 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1557 ma->ma_attr.la_mode = mode;
1558 ma->ma_attr.la_valid = LA_CTIME;
1559 ma->ma_attr.la_ctime = cfs_time_current_64();
1562 lname->ln_name = name;
1563 lname->ln_namelen = namelen;
1564 /* If name is specified, only create one object by name */
1565 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1570 /* Create multiple object sequenced by id */
1571 for (i = 0; i < count; i++) {
1572 char *tmp_name = info->eti_name;
1574 echo_md_build_name(lname, tmp_name, id);
1576 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1579 CERROR("Can not create child %s: rc = %d\n", tmp_name,
1588 if (lmm_size > 0 && ma->ma_lmm != NULL)
1589 OBD_FREE(ma->ma_lmm, lmm_size);
1590 if (cookie_size > 0 && ma->ma_cookie != NULL)
1591 OBD_FREE(ma->ma_cookie, cookie_size);
1596 static struct lu_object *echo_md_lookup(const struct lu_env *env,
1597 struct echo_device *ed,
1598 struct md_object *parent,
1599 struct lu_name *lname)
1601 struct echo_thread_info *info = echo_env_info(env);
1602 struct lu_fid *fid = &info->eti_fid;
1603 struct lu_object *child;
1607 CDEBUG(D_INFO, "lookup %s in parent "DFID" %p\n", lname->ln_name,
1609 rc = mdo_lookup(env, parent, lname, fid, NULL);
1611 CERROR("lookup %s: rc = %d\n", lname->ln_name, rc);
1612 RETURN(ERR_PTR(rc));
1615 child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1620 static int echo_setattr_object(const struct lu_env *env,
1621 struct echo_device *ed,
1622 struct lu_object *ec_parent,
1623 __u64 id, int count)
1625 struct lu_object *parent;
1626 struct echo_thread_info *info = echo_env_info(env);
1627 struct lu_name *lname = &info->eti_lname;
1628 char *name = info->eti_name;
1629 struct lu_device *ld = ed->ed_next;
1630 struct lu_buf *buf = &info->eti_buf;
1634 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1635 if (ec_parent == NULL) {
1636 lu_object_put(env, ec_parent);
1637 return PTR_ERR(parent);
1640 buf->lb_buf = info->eti_xattr_buf;
1641 buf->lb_len = sizeof(info->eti_xattr_buf);
1642 for (i = 0; i < count; i++) {
1643 struct lu_object *ec_child, *child;
1645 echo_md_build_name(lname, name, id);
1647 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1648 if (IS_ERR(ec_child)) {
1649 CERROR("Can't find child %s: rc = %ld\n",
1650 lname->ln_name, PTR_ERR(ec_child));
1651 RETURN(PTR_ERR(ec_child));
1654 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1655 if (child == NULL) {
1656 CERROR("Can not locate the child %s\n", lname->ln_name);
1657 lu_object_put(env, ec_child);
1662 CDEBUG(D_RPCTRACE, "Start setattr object "DFID"\n",
1663 PFID(lu_object_fid(child)));
1665 sprintf(name, "%s.test1", XATTR_USER_PREFIX);
1666 rc = mo_xattr_set(env, lu2md(child), buf, name,
1669 CERROR("Can not setattr child "DFID": rc = %d\n",
1670 PFID(lu_object_fid(child)), rc);
1671 lu_object_put(env, ec_child);
1674 CDEBUG(D_RPCTRACE, "End setattr object "DFID"\n",
1675 PFID(lu_object_fid(child)));
1677 lu_object_put(env, ec_child);
1682 static int echo_getattr_object(const struct lu_env *env,
1683 struct echo_device *ed,
1684 struct lu_object *ec_parent,
1685 __u64 id, int count)
1687 struct lu_object *parent;
1688 struct echo_thread_info *info = echo_env_info(env);
1689 struct lu_name *lname = &info->eti_lname;
1690 char *name = info->eti_name;
1691 struct md_attr *ma = &info->eti_ma;
1692 struct lu_device *ld = ed->ed_next;
1695 int cookie_size = 0;
1698 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1699 if (ec_parent == NULL) {
1700 lu_object_put(env, ec_parent);
1701 return PTR_ERR(parent);
1704 memset(ma, 0, sizeof(*ma));
1705 rc = echo_set_lmm_size(env, ld, ma, &lmm_size, &cookie_size);
1709 ma->ma_need |= MA_INODE | MA_LOV | MA_PFID | MA_HSM | MA_ACL_DEF;
1710 ma->ma_acl = info->eti_xattr_buf;
1711 ma->ma_acl_size = sizeof(info->eti_xattr_buf);
1713 for (i = 0; i < count; i++) {
1714 struct lu_object *ec_child, *child;
1717 echo_md_build_name(lname, name, id);
1719 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1720 if (IS_ERR(ec_child)) {
1721 CERROR("Can't find child %s: rc = %ld\n",
1722 lname->ln_name, PTR_ERR(ec_child));
1723 RETURN(PTR_ERR(ec_child));
1726 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1727 if (child == NULL) {
1728 CERROR("Can not locate the child %s\n", lname->ln_name);
1729 lu_object_put(env, ec_child);
1730 GOTO(out_free, rc = -EINVAL);
1733 CDEBUG(D_RPCTRACE, "Start getattr object "DFID"\n",
1734 PFID(lu_object_fid(child)));
1735 rc = mo_attr_get(env, lu2md(child), ma);
1737 CERROR("Can not getattr child "DFID": rc = %d\n",
1738 PFID(lu_object_fid(child)), rc);
1739 lu_object_put(env, ec_child);
1742 CDEBUG(D_RPCTRACE, "End getattr object "DFID"\n",
1743 PFID(lu_object_fid(child)));
1745 lu_object_put(env, ec_child);
1749 if (lmm_size > 0 && ma->ma_lmm != NULL)
1750 OBD_FREE(ma->ma_lmm, lmm_size);
1751 if (cookie_size > 0 && ma->ma_cookie != NULL)
1752 OBD_FREE(ma->ma_cookie, cookie_size);
1756 static int echo_lookup_object(const struct lu_env *env,
1757 struct echo_device *ed,
1758 struct lu_object *ec_parent,
1759 __u64 id, int count)
1761 struct lu_object *parent;
1762 struct echo_thread_info *info = echo_env_info(env);
1763 struct lu_name *lname = &info->eti_lname;
1764 char *name = info->eti_name;
1765 struct lu_fid *fid = &info->eti_fid;
1766 struct lu_device *ld = ed->ed_next;
1770 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1771 if (ec_parent == NULL) {
1772 lu_object_put(env, ec_parent);
1773 return PTR_ERR(parent);
1776 /*prepare the requests*/
1777 for (i = 0; i < count; i++) {
1778 echo_md_build_name(lname, name, id);
1780 CDEBUG(D_RPCTRACE, "Start lookup object "DFID" %s %p\n",
1781 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1783 rc = mdo_lookup(env, lu2md(parent), lname, fid, NULL);
1785 CERROR("Can not lookup child %s: rc = %d\n", name, rc);
1788 CDEBUG(D_RPCTRACE, "End lookup object "DFID" %s %p\n",
1789 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1796 static int echo_md_destroy_internal(const struct lu_env *env,
1797 struct echo_device *ed,
1798 struct md_object *parent,
1799 struct lu_name *lname,
1802 struct lu_device *ld = ed->ed_next;
1803 struct lu_object *ec_child;
1804 struct lu_object *child;
1807 ec_child = echo_md_lookup(env, ed, parent, lname);
1808 if (IS_ERR(ec_child)) {
1809 CERROR("Can't find child %s: rc = %ld\n", lname->ln_name,
1811 RETURN(PTR_ERR(ec_child));
1814 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1815 if (child == NULL) {
1816 CERROR("Can not locate the child %s\n", lname->ln_name);
1817 GOTO(out_put, rc = -EINVAL);
1820 CDEBUG(D_RPCTRACE, "Start destroy object "DFID" %s %p\n",
1821 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1823 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 3, 55, 0)
1824 /* After 2.4, MDT will send destroy RPC to OST directly, so no need
1826 ma->ma_valid |= MA_FLAGS;
1827 ma->ma_attr_flags |= MDS_UNLINK_DESTROY;
1829 #warning "Please remove this after 2.4 (LOD/OSP)"
1831 rc = mdo_unlink(env, parent, lu2md(child), lname, ma);
1833 CERROR("Can not unlink child %s: rc = %d\n",
1834 lname->ln_name, rc);
1837 CDEBUG(D_RPCTRACE, "End destroy object "DFID" %s %p\n",
1838 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1840 lu_object_put(env, ec_child);
1844 static int echo_destroy_object(const struct lu_env *env,
1845 struct echo_device *ed,
1846 struct lu_object *ec_parent,
1847 char *name, int namelen,
1848 __u64 id, __u32 mode,
1851 struct echo_thread_info *info = echo_env_info(env);
1852 struct lu_name *lname = &info->eti_lname;
1853 struct md_attr *ma = &info->eti_ma;
1854 struct lu_device *ld = ed->ed_next;
1855 struct lu_object *parent;
1858 int cookie_size = 0;
1862 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1866 memset(ma, 0, sizeof(*ma));
1867 ma->ma_attr.la_mode = mode;
1868 ma->ma_attr.la_valid = LA_CTIME;
1869 ma->ma_attr.la_ctime = cfs_time_current_64();
1870 ma->ma_need = MA_INODE;
1873 rc = echo_set_lmm_size(env, ld, ma, &lmm_size, &cookie_size);
1877 lname->ln_name = name;
1878 lname->ln_namelen = namelen;
1879 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1884 /*prepare the requests*/
1885 for (i = 0; i < count; i++) {
1886 char *tmp_name = info->eti_name;
1888 ma->ma_need |= MA_LOV;
1890 echo_md_build_name(lname, tmp_name, id);
1892 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1895 CERROR("Can not unlink child %s: rc = %d\n", name, rc);
1902 if (lmm_size > 0 && ma->ma_lmm != NULL)
1903 OBD_FREE(ma->ma_lmm, lmm_size);
1904 if (cookie_size > 0 && ma->ma_cookie != NULL)
1905 OBD_FREE(ma->ma_cookie, cookie_size);
1909 static struct lu_object *echo_resolve_path(const struct lu_env *env,
1910 struct echo_device *ed, char *path,
1913 struct lu_device *ld = ed->ed_next;
1914 struct md_device *md = lu2md_dev(ld);
1915 struct echo_thread_info *info = echo_env_info(env);
1916 struct lu_fid *fid = &info->eti_fid;
1917 struct lu_name *lname = &info->eti_lname;
1918 struct lu_object *parent = NULL;
1919 struct lu_object *child = NULL;
1923 /*Only support MDD layer right now*/
1924 rc = md->md_ops->mdo_root_get(env, md, fid);
1926 CERROR("get root error: rc = %d\n", rc);
1927 RETURN(ERR_PTR(rc));
1930 parent = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1931 if (IS_ERR(parent)) {
1932 CERROR("Can not find the parent "DFID": rc = %ld\n",
1933 PFID(fid), PTR_ERR(parent));
1938 struct lu_object *ld_parent;
1941 e = strsep(&path, "/");
1946 if (!path || path[0] == '\0')
1952 lname->ln_namelen = strlen(e);
1954 ld_parent = lu_object_locate(parent->lo_header, ld->ld_type);
1955 if (ld_parent == NULL) {
1956 lu_object_put(env, parent);
1961 child = echo_md_lookup(env, ed, lu2md(ld_parent), lname);
1962 lu_object_put(env, parent);
1963 if (IS_ERR(child)) {
1964 rc = (int)PTR_ERR(child);
1965 CERROR("lookup %s under parent "DFID": rc = %d\n",
1966 lname->ln_name, PFID(lu_object_fid(ld_parent)),
1973 RETURN(ERR_PTR(rc));
1978 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_MD_THREAD)
1979 #define ECHO_MD_SES_TAG (LCT_REMEMBER | LCT_SESSION)
1980 static int echo_md_handler(struct echo_device *ed, int command,
1981 char *path, int path_len, int id, int count,
1982 struct obd_ioctl_data *data)
1984 struct lu_device *ld = ed->ed_next;
1987 struct lu_object *parent;
1989 int namelen = data->ioc_plen2;
1994 CERROR("MD echo client is not being initialized properly\n");
1998 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
1999 CERROR("Only support MDD layer right now!\n");
2003 env = cl_env_get(&refcheck);
2005 RETURN(PTR_ERR(env));
2007 rc = lu_env_refill_by_tags(env, ECHO_MD_CTX_TAG, ECHO_MD_SES_TAG);
2009 cl_env_put(env, &refcheck);
2013 parent = echo_resolve_path(env, ed, path, path_len);
2014 if (IS_ERR(parent)) {
2015 CERROR("Can not resolve the path %s: rc = %ld\n", path,
2017 cl_env_put(env, &refcheck);
2018 RETURN(PTR_ERR(parent));
2022 OBD_ALLOC(name, namelen + 1);
2025 if (cfs_copy_from_user(name, data->ioc_pbuf2, namelen)) {
2026 OBD_FREE(name, namelen + 1);
2032 case ECHO_MD_CREATE:
2033 case ECHO_MD_MKDIR: {
2034 struct echo_thread_info *info = echo_env_info(env);
2035 __u32 mode = data->ioc_obdo2.o_mode;
2036 struct lu_fid *fid = &info->eti_fid;
2037 int stripe_count = (int)data->ioc_obdo2.o_misc;
2038 int stripe_index = (int)data->ioc_obdo2.o_stripe_idx;
2040 fid->f_seq = data->ioc_obdo1.o_seq;
2041 fid->f_oid = (__u32)data->ioc_obdo1.o_id;
2043 /* In the function below, .hs_keycmp resolves to
2044 * lu_obj_hop_keycmp() */
2045 /* coverity[overrun-buffer-val] */
2046 rc = echo_create_md_object(env, ed, parent, fid, name, namelen,
2047 id, mode, count, stripe_count,
2051 case ECHO_MD_DESTROY:
2052 case ECHO_MD_RMDIR: {
2053 __u32 mode = data->ioc_obdo2.o_mode;
2055 rc = echo_destroy_object(env, ed, parent, name, namelen,
2059 case ECHO_MD_LOOKUP:
2060 rc = echo_lookup_object(env, ed, parent, id, count);
2062 case ECHO_MD_GETATTR:
2063 rc = echo_getattr_object(env, ed, parent, id, count);
2065 case ECHO_MD_SETATTR:
2066 rc = echo_setattr_object(env, ed, parent, id, count);
2069 CERROR("unknown command %d\n", command);
2074 OBD_FREE(name, namelen + 1);
2075 lu_object_put(env, parent);
2076 cl_env_put(env, &refcheck);
2080 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
2081 int on_target, struct obdo *oa, void *ulsm,
2082 int ulsm_nob, struct obd_trans_info *oti)
2084 struct echo_object *eco;
2085 struct echo_client_obd *ec = ed->ed_ec;
2086 struct lov_stripe_md *lsm = NULL;
2091 if ((oa->o_valid & OBD_MD_FLID) == 0 && /* no obj id */
2092 (on_target || /* set_stripe */
2093 ec->ec_nstripes != 0)) { /* LOV */
2094 CERROR ("No valid oid\n");
2098 rc = obd_alloc_memmd(ec->ec_exp, &lsm);
2100 CERROR("Cannot allocate md: rc = %d\n", rc);
2107 rc = echo_copyin_lsm (ed, lsm, ulsm, ulsm_nob);
2111 if (lsm->lsm_stripe_count == 0)
2112 lsm->lsm_stripe_count = ec->ec_nstripes;
2114 if (lsm->lsm_stripe_size == 0)
2115 lsm->lsm_stripe_size = CFS_PAGE_SIZE;
2119 /* setup stripes: indices + default ids if required */
2120 for (i = 0; i < lsm->lsm_stripe_count; i++) {
2121 if (lsm->lsm_oinfo[i]->loi_id == 0)
2122 lsm->lsm_oinfo[i]->loi_id = lsm->lsm_object_id;
2124 lsm->lsm_oinfo[i]->loi_ost_idx =
2125 (idx + i) % ec->ec_nstripes;
2129 /* setup object ID here for !on_target and LOV hint */
2130 if (oa->o_valid & OBD_MD_FLID)
2131 lsm->lsm_object_id = oa->o_id;
2133 if (lsm->lsm_object_id == 0)
2134 lsm->lsm_object_id = ++last_object_id;
2138 /* Only echo objects are allowed to be created */
2139 LASSERT((oa->o_valid & OBD_MD_FLGROUP) &&
2140 (oa->o_seq == FID_SEQ_ECHO));
2141 rc = obd_create(env, ec->ec_exp, oa, &lsm, oti);
2143 CERROR("Cannot create objects: rc = %d\n", rc);
2149 /* See what object ID we were given */
2150 oa->o_id = lsm->lsm_object_id;
2151 oa->o_valid |= OBD_MD_FLID;
2153 eco = cl_echo_object_find(ed, &lsm);
2155 GOTO(failed, rc = PTR_ERR(eco));
2156 cl_echo_object_put(eco);
2158 CDEBUG(D_INFO, "oa->o_id = %lx\n", (long)oa->o_id);
2163 obd_destroy(env, ec->ec_exp, oa, lsm, oti, NULL, NULL);
2165 obd_free_memmd(ec->ec_exp, &lsm);
2167 CERROR("create object failed with: rc = %d\n", rc);
2171 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
2174 struct echo_client_obd *ec = ed->ed_ec;
2175 struct lov_stripe_md *lsm = NULL;
2176 struct echo_object *eco;
2180 if ((oa->o_valid & OBD_MD_FLID) == 0 ||
2181 oa->o_id == 0) /* disallow use of object id 0 */
2183 CERROR ("No valid oid\n");
2187 rc = obd_alloc_memmd(ec->ec_exp, &lsm);
2191 lsm->lsm_object_id = oa->o_id;
2192 if (oa->o_valid & OBD_MD_FLGROUP)
2193 lsm->lsm_object_seq = oa->o_seq;
2195 lsm->lsm_object_seq = FID_SEQ_ECHO;
2198 eco = cl_echo_object_find(ed, &lsm);
2204 obd_free_memmd(ec->ec_exp, &lsm);
2208 static void echo_put_object(struct echo_object *eco)
2210 if (cl_echo_object_put(eco))
2211 CERROR("echo client: drop an object failed");
2215 echo_get_stripe_off_id (struct lov_stripe_md *lsm, obd_off *offp, obd_id *idp)
2217 unsigned long stripe_count;
2218 unsigned long stripe_size;
2219 unsigned long width;
2220 unsigned long woffset;
2224 if (lsm->lsm_stripe_count <= 1)
2228 stripe_size = lsm->lsm_stripe_size;
2229 stripe_count = lsm->lsm_stripe_count;
2231 /* width = # bytes in all stripes */
2232 width = stripe_size * stripe_count;
2234 /* woffset = offset within a width; offset = whole number of widths */
2235 woffset = do_div (offset, width);
2237 stripe_index = woffset / stripe_size;
2239 *idp = lsm->lsm_oinfo[stripe_index]->loi_id;
2240 *offp = offset * stripe_size + woffset % stripe_size;
2244 echo_client_page_debug_setup(struct lov_stripe_md *lsm,
2245 cfs_page_t *page, int rw, obd_id id,
2246 obd_off offset, obd_off count)
2253 /* no partial pages on the client */
2254 LASSERT(count == CFS_PAGE_SIZE);
2256 addr = cfs_kmap(page);
2258 for (delta = 0; delta < CFS_PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2259 if (rw == OBD_BRW_WRITE) {
2260 stripe_off = offset + delta;
2262 echo_get_stripe_off_id(lsm, &stripe_off, &stripe_id);
2264 stripe_off = 0xdeadbeef00c0ffeeULL;
2265 stripe_id = 0xdeadbeef00c0ffeeULL;
2267 block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE,
2268 stripe_off, stripe_id);
2274 static int echo_client_page_debug_check(struct lov_stripe_md *lsm,
2275 cfs_page_t *page, obd_id id,
2276 obd_off offset, obd_off count)
2285 /* no partial pages on the client */
2286 LASSERT(count == CFS_PAGE_SIZE);
2288 addr = cfs_kmap(page);
2290 for (rc = delta = 0; delta < CFS_PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2291 stripe_off = offset + delta;
2293 echo_get_stripe_off_id (lsm, &stripe_off, &stripe_id);
2295 rc2 = block_debug_check("test_brw",
2296 addr + delta, OBD_ECHO_BLOCK_SIZE,
2297 stripe_off, stripe_id);
2299 CERROR ("Error in echo object "LPX64"\n", id);
2308 static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
2309 struct echo_object *eco, obd_off offset,
2310 obd_size count, int async,
2311 struct obd_trans_info *oti)
2313 struct lov_stripe_md *lsm = eco->eo_lsm;
2315 struct brw_page *pga;
2316 struct brw_page *pgp;
2326 verify = ((oa->o_id) != ECHO_PERSISTENT_OBJID &&
2327 (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
2328 (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
2330 gfp_mask = ((oa->o_id & 2) == 0) ? CFS_ALLOC_STD : CFS_ALLOC_HIGHUSER;
2332 LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
2333 LASSERT(lsm != NULL);
2334 LASSERT(lsm->lsm_object_id == oa->o_id);
2337 (count & (~CFS_PAGE_MASK)) != 0)
2340 /* XXX think again with misaligned I/O */
2341 npages = count >> CFS_PAGE_SHIFT;
2343 if (rw == OBD_BRW_WRITE)
2344 brw_flags = OBD_BRW_ASYNC;
2346 OBD_ALLOC(pga, npages * sizeof(*pga));
2350 OBD_ALLOC(pages, npages * sizeof(*pages));
2351 if (pages == NULL) {
2352 OBD_FREE(pga, npages * sizeof(*pga));
2356 for (i = 0, pgp = pga, off = offset;
2358 i++, pgp++, off += CFS_PAGE_SIZE) {
2360 LASSERT (pgp->pg == NULL); /* for cleanup */
2363 OBD_PAGE_ALLOC(pgp->pg, gfp_mask);
2364 if (pgp->pg == NULL)
2368 pgp->count = CFS_PAGE_SIZE;
2370 pgp->flag = brw_flags;
2373 echo_client_page_debug_setup(lsm, pgp->pg, rw,
2374 oa->o_id, off, pgp->count);
2377 /* brw mode can only be used at client */
2378 LASSERT(ed->ed_next != NULL);
2379 rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
2382 if (rc != 0 || rw != OBD_BRW_READ)
2385 for (i = 0, pgp = pga; i < npages; i++, pgp++) {
2386 if (pgp->pg == NULL)
2391 vrc = echo_client_page_debug_check(lsm, pgp->pg, oa->o_id,
2392 pgp->off, pgp->count);
2393 if (vrc != 0 && rc == 0)
2396 OBD_PAGE_FREE(pgp->pg);
2398 OBD_FREE(pga, npages * sizeof(*pga));
2399 OBD_FREE(pages, npages * sizeof(*pages));
2403 static int echo_client_prep_commit(struct obd_export *exp, int rw,
2404 struct obdo *oa, struct echo_object *eco,
2405 obd_off offset, obd_size count,
2406 obd_size batch, struct obd_trans_info *oti,
2409 struct lov_stripe_md *lsm = eco->eo_lsm;
2410 struct obd_ioobj ioo;
2411 struct niobuf_local *lnb;
2412 struct niobuf_remote *rnb;
2414 obd_size npages, tot_pages;
2418 if (count <= 0 || (count & (~CFS_PAGE_MASK)) != 0 ||
2419 (lsm != NULL && lsm->lsm_object_id != oa->o_id))
2422 npages = batch >> CFS_PAGE_SHIFT;
2423 tot_pages = count >> CFS_PAGE_SHIFT;
2425 OBD_ALLOC(lnb, npages * sizeof(struct niobuf_local));
2426 OBD_ALLOC(rnb, npages * sizeof(struct niobuf_remote));
2428 if (lnb == NULL || rnb == NULL)
2429 GOTO(out, ret = -ENOMEM);
2431 obdo_to_ioobj(oa, &ioo);
2435 for(; tot_pages; tot_pages -= npages) {
2438 if (tot_pages < npages)
2441 for (i = 0; i < npages; i++, off += CFS_PAGE_SIZE) {
2442 rnb[i].offset = off;
2443 rnb[i].len = CFS_PAGE_SIZE;
2446 ioo.ioo_bufcnt = npages;
2447 oti->oti_transno = 0;
2450 ret = obd_preprw(NULL, rw, exp, oa, 1, &ioo, rnb, &lpages,
2454 LASSERT(lpages == npages);
2456 for (i = 0; i < lpages; i++) {
2457 cfs_page_t *page = lnb[i].page;
2459 /* read past eof? */
2460 if (page == NULL && lnb[i].rc == 0)
2464 lnb[i].flags |= OBD_BRW_ASYNC;
2466 if (oa->o_id == ECHO_PERSISTENT_OBJID ||
2467 (oa->o_valid & OBD_MD_FLFLAGS) == 0 ||
2468 (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0)
2471 if (rw == OBD_BRW_WRITE)
2472 echo_client_page_debug_setup(lsm, page, rw,
2477 echo_client_page_debug_check(lsm, page,
2483 ret = obd_commitrw(NULL, rw, exp, oa, 1, &ioo,
2484 rnb, npages, lnb, oti, ret);
2488 /* Reset oti otherwise it would confuse ldiskfs. */
2489 memset(oti, 0, sizeof(*oti));
2494 OBD_FREE(lnb, npages * sizeof(struct niobuf_local));
2496 OBD_FREE(rnb, npages * sizeof(struct niobuf_remote));
2500 static int echo_client_brw_ioctl(int rw, struct obd_export *exp,
2501 struct obd_ioctl_data *data)
2503 struct obd_device *obd = class_exp2obd(exp);
2504 struct echo_device *ed = obd2echo_dev(obd);
2505 struct echo_client_obd *ec = ed->ed_ec;
2506 struct obd_trans_info dummy_oti = { 0 };
2507 struct obdo *oa = &data->ioc_obdo1;
2508 struct echo_object *eco;
2514 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
2516 rc = echo_get_object(&eco, ed, oa);
2520 oa->o_valid &= ~OBD_MD_FLHANDLE;
2522 /* obdfilter doesn't support obd_brw now, simulate via prep + commit */
2523 test_mode = (long)data->ioc_pbuf1;
2527 if (ed->ed_next == NULL && test_mode != 3) {
2529 data->ioc_plen1 = data->ioc_count;
2532 /* Truncate batch size to maximum */
2533 if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE)
2534 data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE;
2536 switch (test_mode) {
2540 rc = echo_client_kbrw(ed, rw, oa,
2541 eco, data->ioc_offset,
2542 data->ioc_count, async, &dummy_oti);
2545 rc = echo_client_prep_commit(ec->ec_exp, rw, oa,
2546 eco, data->ioc_offset,
2547 data->ioc_count, data->ioc_plen1,
2553 echo_put_object(eco);
2558 echo_client_enqueue(struct obd_export *exp, struct obdo *oa,
2559 int mode, obd_off offset, obd_size nob)
2561 struct echo_device *ed = obd2echo_dev(exp->exp_obd);
2562 struct lustre_handle *ulh = &oa->o_handle;
2563 struct echo_object *eco;
2568 if (ed->ed_next == NULL)
2569 RETURN(-EOPNOTSUPP);
2571 if (!(mode == LCK_PR || mode == LCK_PW))
2574 if ((offset & (~CFS_PAGE_MASK)) != 0 ||
2575 (nob & (~CFS_PAGE_MASK)) != 0)
2578 rc = echo_get_object (&eco, ed, oa);
2582 end = (nob == 0) ? ((obd_off) -1) : (offset + nob - 1);
2583 rc = cl_echo_enqueue(eco, offset, end, mode, &ulh->cookie);
2585 oa->o_valid |= OBD_MD_FLHANDLE;
2586 CDEBUG(D_INFO, "Cookie is "LPX64"\n", ulh->cookie);
2588 echo_put_object(eco);
2593 echo_client_cancel(struct obd_export *exp, struct obdo *oa)
2595 struct echo_device *ed = obd2echo_dev(exp->exp_obd);
2596 __u64 cookie = oa->o_handle.cookie;
2598 if ((oa->o_valid & OBD_MD_FLHANDLE) == 0)
2601 CDEBUG(D_INFO, "Cookie is "LPX64"\n", cookie);
2602 return cl_echo_cancel(ed, cookie);
2606 echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2607 void *karg, void *uarg)
2609 struct obd_device *obd = exp->exp_obd;
2610 struct echo_device *ed = obd2echo_dev(obd);
2611 struct echo_client_obd *ec = ed->ed_ec;
2612 struct echo_object *eco;
2613 struct obd_ioctl_data *data = karg;
2614 struct obd_trans_info dummy_oti;
2616 struct oti_req_ack_lock *ack_lock;
2619 int rw = OBD_BRW_READ;
2624 memset(&dummy_oti, 0, sizeof(dummy_oti));
2626 oa = &data->ioc_obdo1;
2627 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
2628 oa->o_valid |= OBD_MD_FLGROUP;
2629 oa->o_seq = FID_SEQ_ECHO;
2632 /* This FID is unpacked just for validation at this point */
2633 rc = fid_ostid_unpack(&fid, &oa->o_oi, 0);
2641 rc = lu_env_init(env, LCT_DT_THREAD);
2643 GOTO(out, rc = -ENOMEM);
2646 case OBD_IOC_CREATE: /* may create echo object */
2647 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2648 GOTO (out, rc = -EPERM);
2650 rc = echo_create_object(env, ed, 1, oa, data->ioc_pbuf1,
2651 data->ioc_plen1, &dummy_oti);
2654 case OBD_IOC_ECHO_MD: {
2661 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2662 GOTO(out, rc = -EPERM);
2664 count = data->ioc_count;
2665 cmd = data->ioc_command;
2667 id = data->ioc_obdo2.o_id;
2669 dirlen = data->ioc_plen1;
2670 OBD_ALLOC(dir, dirlen + 1);
2672 GOTO(out, rc = -ENOMEM);
2674 if (cfs_copy_from_user(dir, data->ioc_pbuf1, dirlen)) {
2675 OBD_FREE(dir, data->ioc_plen1 + 1);
2676 GOTO(out, rc = -EFAULT);
2679 rc = echo_md_handler(ed, cmd, dir, dirlen, id, count, data);
2680 OBD_FREE(dir, dirlen + 1);
2683 case OBD_IOC_ECHO_ALLOC_SEQ: {
2684 struct lu_env *cl_env;
2689 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2690 GOTO(out, rc = -EPERM);
2692 cl_env = cl_env_get(&refcheck);
2694 GOTO(out, rc = PTR_ERR(cl_env));
2696 rc = lu_env_refill_by_tags(cl_env, ECHO_MD_CTX_TAG,
2699 cl_env_put(cl_env, &refcheck);
2703 rc = seq_client_get_seq(cl_env, ed->ed_cl_seq, &seq);
2704 cl_env_put(cl_env, &refcheck);
2706 CERROR("%s: Can not alloc seq: rc = %d\n",
2711 if (cfs_copy_to_user(data->ioc_pbuf1, &seq, data->ioc_plen1))
2714 max_count = LUSTRE_SEQ_MAX_WIDTH;
2715 if (cfs_copy_to_user(data->ioc_pbuf2, &max_count,
2720 case OBD_IOC_DESTROY:
2721 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2722 GOTO (out, rc = -EPERM);
2724 rc = echo_get_object(&eco, ed, oa);
2726 rc = obd_destroy(env, ec->ec_exp, oa, eco->eo_lsm,
2727 &dummy_oti, NULL, NULL);
2729 eco->eo_deleted = 1;
2730 echo_put_object(eco);
2734 case OBD_IOC_GETATTR:
2735 rc = echo_get_object(&eco, ed, oa);
2737 struct obd_info oinfo = { { { 0 } } };
2738 oinfo.oi_md = eco->eo_lsm;
2740 rc = obd_getattr(env, ec->ec_exp, &oinfo);
2741 echo_put_object(eco);
2745 case OBD_IOC_SETATTR:
2746 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2747 GOTO (out, rc = -EPERM);
2749 rc = echo_get_object(&eco, ed, oa);
2751 struct obd_info oinfo = { { { 0 } } };
2753 oinfo.oi_md = eco->eo_lsm;
2755 rc = obd_setattr(env, ec->ec_exp, &oinfo, NULL);
2756 echo_put_object(eco);
2760 case OBD_IOC_BRW_WRITE:
2761 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2762 GOTO (out, rc = -EPERM);
2766 case OBD_IOC_BRW_READ:
2767 rc = echo_client_brw_ioctl(rw, exp, data);
2770 case ECHO_IOC_GET_STRIPE:
2771 rc = echo_get_object(&eco, ed, oa);
2773 rc = echo_copyout_lsm(eco->eo_lsm, data->ioc_pbuf1,
2775 echo_put_object(eco);
2779 case ECHO_IOC_SET_STRIPE:
2780 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2781 GOTO (out, rc = -EPERM);
2783 if (data->ioc_pbuf1 == NULL) { /* unset */
2784 rc = echo_get_object(&eco, ed, oa);
2786 eco->eo_deleted = 1;
2787 echo_put_object(eco);
2790 rc = echo_create_object(env, ed, 0, oa,
2792 data->ioc_plen1, &dummy_oti);
2796 case ECHO_IOC_ENQUEUE:
2797 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2798 GOTO (out, rc = -EPERM);
2800 rc = echo_client_enqueue(exp, oa,
2801 data->ioc_conn1, /* lock mode */
2803 data->ioc_count);/*extent*/
2806 case ECHO_IOC_CANCEL:
2807 rc = echo_client_cancel(exp, oa);
2811 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd);
2812 GOTO (out, rc = -ENOTTY);
2820 /* XXX this should be in a helper also called by target_send_reply */
2821 for (ack_lock = dummy_oti.oti_ack_locks, i = 0; i < 4;
2823 if (!ack_lock->mode)
2825 ldlm_lock_decref(&ack_lock->lock, ack_lock->mode);
2831 static int echo_client_setup(const struct lu_env *env,
2832 struct obd_device *obddev, struct lustre_cfg *lcfg)
2834 struct echo_client_obd *ec = &obddev->u.echo_client;
2835 struct obd_device *tgt;
2836 struct obd_uuid echo_uuid = { "ECHO_UUID" };
2837 struct obd_connect_data *ocd = NULL;
2841 if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2842 CERROR("requires a TARGET OBD name\n");
2846 tgt = class_name2obd(lustre_cfg_string(lcfg, 1));
2847 if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) {
2848 CERROR("device not attached or not set up (%s)\n",
2849 lustre_cfg_string(lcfg, 1));
2853 cfs_spin_lock_init (&ec->ec_lock);
2854 CFS_INIT_LIST_HEAD (&ec->ec_objects);
2855 CFS_INIT_LIST_HEAD (&ec->ec_locks);
2857 ec->ec_nstripes = 0;
2859 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
2860 lu_context_tags_update(ECHO_MD_CTX_TAG);
2861 lu_session_tags_update(ECHO_MD_SES_TAG);
2865 OBD_ALLOC(ocd, sizeof(*ocd));
2867 CERROR("Can't alloc ocd connecting to %s\n",
2868 lustre_cfg_string(lcfg, 1));
2872 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
2873 OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
2874 OBD_CONNECT_64BITHASH;
2875 ocd->ocd_version = LUSTRE_VERSION_CODE;
2876 ocd->ocd_group = FID_SEQ_ECHO;
2878 rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
2880 /* Turn off pinger because it connects to tgt obd directly. */
2881 cfs_spin_lock(&tgt->obd_dev_lock);
2882 cfs_list_del_init(&ec->ec_exp->exp_obd_chain_timed);
2883 cfs_spin_unlock(&tgt->obd_dev_lock);
2886 OBD_FREE(ocd, sizeof(*ocd));
2889 CERROR("fail to connect to device %s\n",
2890 lustre_cfg_string(lcfg, 1));
2897 static int echo_client_cleanup(struct obd_device *obddev)
2899 struct echo_device *ed = obd2echo_dev(obddev);
2900 struct echo_client_obd *ec = &obddev->u.echo_client;
2904 /*Do nothing for Metadata echo client*/
2908 if (ed->ed_next_ismd) {
2909 lu_context_tags_clear(ECHO_MD_CTX_TAG);
2910 lu_session_tags_clear(ECHO_MD_SES_TAG);
2914 if (!cfs_list_empty(&obddev->obd_exports)) {
2915 CERROR("still has clients!\n");
2919 LASSERT(cfs_atomic_read(&ec->ec_exp->exp_refcount) > 0);
2920 rc = obd_disconnect(ec->ec_exp);
2922 CERROR("fail to disconnect device: %d\n", rc);
2927 static int echo_client_connect(const struct lu_env *env,
2928 struct obd_export **exp,
2929 struct obd_device *src, struct obd_uuid *cluuid,
2930 struct obd_connect_data *data, void *localdata)
2933 struct lustre_handle conn = { 0 };
2936 rc = class_connect(&conn, src, cluuid);
2938 *exp = class_conn2export(&conn);
2944 static int echo_client_disconnect(struct obd_export *exp)
2947 struct obd_device *obd;
2948 struct echo_client_obd *ec;
2949 struct ec_lock *ecl;
2955 GOTO(out, rc = -EINVAL);
2959 ec = &obd->u.echo_client;
2961 /* no more contention on export's lock list */
2962 while (!cfs_list_empty (&exp->exp_ec_data.eced_locks)) {
2963 ecl = cfs_list_entry (exp->exp_ec_data.eced_locks.next,
2964 struct ec_lock, ecl_exp_chain);
2965 cfs_list_del (&ecl->ecl_exp_chain);
2967 rc = obd_cancel(ec->ec_exp, ecl->ecl_object->eco_lsm,
2968 ecl->ecl_mode, &ecl->ecl_lock_handle);
2970 CDEBUG (D_INFO, "Cancel lock on object "LPX64" on disconnect "
2971 "(%d)\n", ecl->ecl_object->eco_id, rc);
2973 echo_put_object (ecl->ecl_object);
2974 OBD_FREE (ecl, sizeof (*ecl));
2978 rc = class_disconnect(exp);
2984 static struct obd_ops echo_client_obd_ops = {
2985 .o_owner = THIS_MODULE,
2988 .o_setup = echo_client_setup,
2989 .o_cleanup = echo_client_cleanup,
2992 .o_iocontrol = echo_client_iocontrol,
2993 .o_connect = echo_client_connect,
2994 .o_disconnect = echo_client_disconnect
2997 int echo_client_init(void)
2999 struct lprocfs_static_vars lvars = { 0 };
3002 lprocfs_echo_init_vars(&lvars);
3004 rc = lu_kmem_init(echo_caches);
3006 rc = class_register_type(&echo_client_obd_ops, NULL,
3008 LUSTRE_ECHO_CLIENT_NAME,
3011 lu_kmem_fini(echo_caches);
3016 void echo_client_exit(void)
3018 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
3019 lu_kmem_fini(echo_caches);
3023 static int __init obdecho_init(void)
3025 struct lprocfs_static_vars lvars;
3029 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
3031 LASSERT(CFS_PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
3033 lprocfs_echo_init_vars(&lvars);
3035 # ifdef HAVE_SERVER_SUPPORT
3036 rc = echo_persistent_pages_init();
3040 rc = class_register_type(&echo_obd_ops, NULL, lvars.module_vars,
3041 LUSTRE_ECHO_NAME, NULL);
3046 rc = echo_client_init();
3048 # ifdef HAVE_SERVER_SUPPORT
3052 class_unregister_type(LUSTRE_ECHO_NAME);
3054 echo_persistent_pages_fini();
3060 static void /*__exit*/ obdecho_exit(void)
3064 # ifdef HAVE_SERVER_SUPPORT
3065 class_unregister_type(LUSTRE_ECHO_NAME);
3066 echo_persistent_pages_fini();
3070 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3071 MODULE_DESCRIPTION("Lustre Testing Echo OBD driver");
3072 MODULE_LICENSE("GPL");
3074 cfs_module(obdecho, LUSTRE_VERSION_STRING, obdecho_init, obdecho_exit);
3075 #endif /* __KERNEL__ */
3077 /** @} echo_client */