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, 2015, Intel Corporation.
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 <linux/user_namespace.h>
40 #ifdef HAVE_UIDGID_HEADER
41 # include <linux/uidgid.h>
43 #include <libcfs/libcfs.h>
46 #include <obd_support.h>
47 #include <obd_class.h>
48 #include <lustre_debug.h>
49 #include <lprocfs_status.h>
50 #include <cl_object.h>
51 #include <lustre_fid.h>
52 #include <lustre_acl.h>
53 #include <lustre_ioctl.h>
54 #include <lustre_net.h>
55 #ifdef HAVE_SERVER_SUPPORT
56 # include <md_object.h>
57 #endif /* HAVE_SERVER_SUPPORT */
59 #include "echo_internal.h"
61 /** \defgroup echo_client Echo Client
66 struct cl_device ed_cl;
67 struct echo_client_obd *ed_ec;
69 struct cl_site ed_site_myself;
70 struct lu_site *ed_site;
71 struct lu_device *ed_next;
73 struct lu_client_seq *ed_cl_seq;
74 #ifdef HAVE_SERVER_SUPPORT
75 struct local_oid_storage *ed_los;
76 struct lu_fid ed_root_fid;
77 #endif /* HAVE_SERVER_SUPPORT */
81 struct cl_object eo_cl;
82 struct cl_object_header eo_hdr;
83 struct echo_device *eo_dev;
84 struct list_head eo_obj_chain;
85 struct lov_oinfo *eo_oinfo;
90 struct echo_object_conf {
91 struct cl_object_conf eoc_cl;
92 struct lov_oinfo **eoc_oinfo;
96 struct cl_page_slice ep_cl;
101 struct cl_lock_slice el_cl;
102 struct list_head el_chain;
103 struct echo_object *el_object;
105 atomic_t el_refcount;
108 #ifdef HAVE_SERVER_SUPPORT
109 static const char echo_md_root_dir_name[] = "ROOT_ECHO";
112 * In order to use the values of members in struct mdd_device,
113 * we define an alias structure here.
115 struct echo_md_device {
116 struct md_device emd_md_dev;
117 struct obd_export *emd_child_exp;
118 struct dt_device *emd_child;
119 struct dt_device *emd_bottom;
120 struct lu_fid emd_root_fid;
121 struct lu_fid emd_local_root_fid;
123 #endif /* HAVE_SERVER_SUPPORT */
125 static int echo_client_setup(const struct lu_env *env,
126 struct obd_device *obddev,
127 struct lustre_cfg *lcfg);
128 static int echo_client_cleanup(struct obd_device *obddev);
131 /** \defgroup echo_helpers Helper functions
134 static inline struct echo_device *cl2echo_dev(const struct cl_device *dev)
136 return container_of0(dev, struct echo_device, ed_cl);
139 static inline struct cl_device *echo_dev2cl(struct echo_device *d)
144 static inline struct echo_device *obd2echo_dev(const struct obd_device *obd)
146 return cl2echo_dev(lu2cl_dev(obd->obd_lu_dev));
149 static inline struct cl_object *echo_obj2cl(struct echo_object *eco)
154 static inline struct echo_object *cl2echo_obj(const struct cl_object *o)
156 return container_of(o, struct echo_object, eo_cl);
159 static inline struct echo_page *cl2echo_page(const struct cl_page_slice *s)
161 return container_of(s, struct echo_page, ep_cl);
164 static inline struct echo_lock *cl2echo_lock(const struct cl_lock_slice *s)
166 return container_of(s, struct echo_lock, el_cl);
169 static inline struct cl_lock *echo_lock2cl(const struct echo_lock *ecl)
171 return ecl->el_cl.cls_lock;
174 static struct lu_context_key echo_thread_key;
175 static inline struct echo_thread_info *echo_env_info(const struct lu_env *env)
177 struct echo_thread_info *info;
178 info = lu_context_key_get(&env->le_ctx, &echo_thread_key);
179 LASSERT(info != NULL);
184 struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c)
186 return container_of(c, struct echo_object_conf, eoc_cl);
189 #ifdef HAVE_SERVER_SUPPORT
190 static inline struct echo_md_device *lu2emd_dev(struct lu_device *d)
192 return container_of0(d, struct echo_md_device, emd_md_dev.md_lu_dev);
195 static inline struct lu_device *emd2lu_dev(struct echo_md_device *d)
197 return &d->emd_md_dev.md_lu_dev;
200 static inline struct seq_server_site *echo_md_seq_site(struct echo_md_device *d)
202 return emd2lu_dev(d)->ld_site->ld_seq_site;
205 static inline struct obd_device *emd2obd_dev(struct echo_md_device *d)
207 return d->emd_md_dev.md_lu_dev.ld_obd;
209 #endif /* HAVE_SERVER_SUPPORT */
211 /** @} echo_helpers */
213 static int cl_echo_object_put(struct echo_object *eco);
214 static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset,
215 struct page **pages, int npages, int async);
217 struct echo_thread_info {
218 struct echo_object_conf eti_conf;
219 struct lustre_md eti_md;
221 struct cl_2queue eti_queue;
223 struct cl_lock eti_lock;
224 struct lu_fid eti_fid;
225 struct lu_fid eti_fid2;
226 #ifdef HAVE_SERVER_SUPPORT
227 struct md_op_spec eti_spec;
228 struct lov_mds_md_v3 eti_lmm;
229 struct lov_user_md_v3 eti_lum;
230 struct md_attr eti_ma;
231 struct lu_name eti_lname;
232 /* per-thread values, can be re-used */
236 struct lu_buf eti_buf;
237 char eti_xattr_buf[LUSTRE_POSIX_ACL_MAX_SIZE];
241 /* No session used right now */
242 struct echo_session_info {
246 static struct kmem_cache *echo_lock_kmem;
247 static struct kmem_cache *echo_object_kmem;
248 static struct kmem_cache *echo_thread_kmem;
249 static struct kmem_cache *echo_session_kmem;
250 /* static struct kmem_cache *echo_req_kmem; */
252 static struct lu_kmem_descr echo_caches[] = {
254 .ckd_cache = &echo_lock_kmem,
255 .ckd_name = "echo_lock_kmem",
256 .ckd_size = sizeof (struct echo_lock)
259 .ckd_cache = &echo_object_kmem,
260 .ckd_name = "echo_object_kmem",
261 .ckd_size = sizeof (struct echo_object)
264 .ckd_cache = &echo_thread_kmem,
265 .ckd_name = "echo_thread_kmem",
266 .ckd_size = sizeof (struct echo_thread_info)
269 .ckd_cache = &echo_session_kmem,
270 .ckd_name = "echo_session_kmem",
271 .ckd_size = sizeof (struct echo_session_info)
278 /** \defgroup echo_page Page operations
280 * Echo page operations.
284 static int echo_page_own(const struct lu_env *env,
285 const struct cl_page_slice *slice,
286 struct cl_io *io, int nonblock)
288 struct echo_page *ep = cl2echo_page(slice);
291 mutex_lock(&ep->ep_lock);
292 else if (!mutex_trylock(&ep->ep_lock))
297 static void echo_page_disown(const struct lu_env *env,
298 const struct cl_page_slice *slice,
301 struct echo_page *ep = cl2echo_page(slice);
303 LASSERT(mutex_is_locked(&ep->ep_lock));
304 mutex_unlock(&ep->ep_lock);
307 static void echo_page_discard(const struct lu_env *env,
308 const struct cl_page_slice *slice,
309 struct cl_io *unused)
311 cl_page_delete(env, slice->cpl_page);
314 static int echo_page_is_vmlocked(const struct lu_env *env,
315 const struct cl_page_slice *slice)
317 if (mutex_is_locked(&cl2echo_page(slice)->ep_lock))
322 static void echo_page_completion(const struct lu_env *env,
323 const struct cl_page_slice *slice,
326 LASSERT(slice->cpl_page->cp_sync_io != NULL);
329 static void echo_page_fini(const struct lu_env *env,
330 struct cl_page_slice *slice)
332 struct echo_object *eco = cl2echo_obj(slice->cpl_obj);
335 atomic_dec(&eco->eo_npages);
336 page_cache_release(slice->cpl_page->cp_vmpage);
340 static int echo_page_prep(const struct lu_env *env,
341 const struct cl_page_slice *slice,
342 struct cl_io *unused)
347 static int echo_page_print(const struct lu_env *env,
348 const struct cl_page_slice *slice,
349 void *cookie, lu_printer_t printer)
351 struct echo_page *ep = cl2echo_page(slice);
353 (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n",
354 ep, mutex_is_locked(&ep->ep_lock),
355 slice->cpl_page->cp_vmpage);
359 static const struct cl_page_operations echo_page_ops = {
360 .cpo_own = echo_page_own,
361 .cpo_disown = echo_page_disown,
362 .cpo_discard = echo_page_discard,
363 .cpo_fini = echo_page_fini,
364 .cpo_print = echo_page_print,
365 .cpo_is_vmlocked = echo_page_is_vmlocked,
368 .cpo_prep = echo_page_prep,
369 .cpo_completion = echo_page_completion,
372 .cpo_prep = echo_page_prep,
373 .cpo_completion = echo_page_completion,
379 /** \defgroup echo_lock Locking
381 * echo lock operations
385 static void echo_lock_fini(const struct lu_env *env,
386 struct cl_lock_slice *slice)
388 struct echo_lock *ecl = cl2echo_lock(slice);
390 LASSERT(list_empty(&ecl->el_chain));
391 OBD_SLAB_FREE_PTR(ecl, echo_lock_kmem);
394 static struct cl_lock_operations echo_lock_ops = {
395 .clo_fini = echo_lock_fini,
400 /** \defgroup echo_cl_ops cl_object operations
402 * operations for cl_object
406 static int echo_page_init(const struct lu_env *env, struct cl_object *obj,
407 struct cl_page *page, pgoff_t index)
409 struct echo_page *ep = cl_object_page_slice(obj, page);
410 struct echo_object *eco = cl2echo_obj(obj);
413 page_cache_get(page->cp_vmpage);
414 mutex_init(&ep->ep_lock);
415 cl_page_slice_add(page, &ep->ep_cl, obj, index, &echo_page_ops);
416 atomic_inc(&eco->eo_npages);
420 static int echo_io_init(const struct lu_env *env, struct cl_object *obj,
426 static int echo_lock_init(const struct lu_env *env,
427 struct cl_object *obj, struct cl_lock *lock,
428 const struct cl_io *unused)
430 struct echo_lock *el;
433 OBD_SLAB_ALLOC_PTR_GFP(el, echo_lock_kmem, GFP_NOFS);
435 cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops);
436 el->el_object = cl2echo_obj(obj);
437 INIT_LIST_HEAD(&el->el_chain);
438 atomic_set(&el->el_refcount, 0);
440 RETURN(el == NULL ? -ENOMEM : 0);
443 static int echo_conf_set(const struct lu_env *env, struct cl_object *obj,
444 const struct cl_object_conf *conf)
449 static const struct cl_object_operations echo_cl_obj_ops = {
450 .coo_page_init = echo_page_init,
451 .coo_lock_init = echo_lock_init,
452 .coo_io_init = echo_io_init,
453 .coo_conf_set = echo_conf_set
455 /** @} echo_cl_ops */
457 /** \defgroup echo_lu_ops lu_object operations
459 * operations for echo lu object.
463 static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
464 const struct lu_object_conf *conf)
466 struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev));
467 struct echo_client_obd *ec = ed->ed_ec;
468 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
472 struct lu_object *below;
473 struct lu_device *under;
476 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header,
480 lu_object_add(obj, below);
483 if (!ed->ed_next_ismd) {
484 const struct cl_object_conf *cconf = lu2cl_conf(conf);
485 struct echo_object_conf *econf = cl2echo_conf(cconf);
487 LASSERT(econf->eoc_oinfo != NULL);
489 /* Transfer the oinfo pointer to eco that it won't be
491 eco->eo_oinfo = *econf->eoc_oinfo;
492 *econf->eoc_oinfo = NULL;
494 eco->eo_oinfo = NULL;
498 atomic_set(&eco->eo_npages, 0);
499 cl_object_page_init(lu2cl(obj), sizeof(struct echo_page));
501 spin_lock(&ec->ec_lock);
502 list_add_tail(&eco->eo_obj_chain, &ec->ec_objects);
503 spin_unlock(&ec->ec_lock);
508 static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
510 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
511 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
514 LASSERT(atomic_read(&eco->eo_npages) == 0);
516 spin_lock(&ec->ec_lock);
517 list_del_init(&eco->eo_obj_chain);
518 spin_unlock(&ec->ec_lock);
521 lu_object_header_fini(obj->lo_header);
523 if (eco->eo_oinfo != NULL)
524 OBD_FREE_PTR(eco->eo_oinfo);
526 OBD_SLAB_FREE_PTR(eco, echo_object_kmem);
530 static int echo_object_print(const struct lu_env *env, void *cookie,
531 lu_printer_t p, const struct lu_object *o)
533 struct echo_object *obj = cl2echo_obj(lu2cl(o));
535 return (*p)(env, cookie, "echoclient-object@%p", obj);
538 static const struct lu_object_operations echo_lu_obj_ops = {
539 .loo_object_init = echo_object_init,
540 .loo_object_delete = NULL,
541 .loo_object_release = NULL,
542 .loo_object_free = echo_object_free,
543 .loo_object_print = echo_object_print,
544 .loo_object_invariant = NULL
546 /** @} echo_lu_ops */
548 /** \defgroup echo_lu_dev_ops lu_device operations
550 * Operations for echo lu device.
554 static struct lu_object *echo_object_alloc(const struct lu_env *env,
555 const struct lu_object_header *hdr,
556 struct lu_device *dev)
558 struct echo_object *eco;
559 struct lu_object *obj = NULL;
562 /* we're the top dev. */
563 LASSERT(hdr == NULL);
564 OBD_SLAB_ALLOC_PTR_GFP(eco, echo_object_kmem, GFP_NOFS);
566 struct cl_object_header *hdr = &eco->eo_hdr;
568 obj = &echo_obj2cl(eco)->co_lu;
569 cl_object_header_init(hdr);
570 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
572 lu_object_init(obj, &hdr->coh_lu, dev);
573 lu_object_add_top(&hdr->coh_lu, obj);
575 eco->eo_cl.co_ops = &echo_cl_obj_ops;
576 obj->lo_ops = &echo_lu_obj_ops;
581 static struct lu_device_operations echo_device_lu_ops = {
582 .ldo_object_alloc = echo_object_alloc,
585 /** @} echo_lu_dev_ops */
587 /** \defgroup echo_init Setup and teardown
589 * Init and fini functions for echo client.
593 static int echo_site_init(const struct lu_env *env, struct echo_device *ed)
595 struct cl_site *site = &ed->ed_site_myself;
598 /* initialize site */
599 rc = cl_site_init(site, &ed->ed_cl);
601 CERROR("Cannot initialize site for echo client(%d)\n", rc);
605 rc = lu_site_init_finish(&site->cs_lu);
611 ed->ed_site = &site->cs_lu;
615 static void echo_site_fini(const struct lu_env *env, struct echo_device *ed)
618 if (!ed->ed_next_ismd)
619 lu_site_fini(ed->ed_site);
624 static void *echo_thread_key_init(const struct lu_context *ctx,
625 struct lu_context_key *key)
627 struct echo_thread_info *info;
629 OBD_SLAB_ALLOC_PTR_GFP(info, echo_thread_kmem, GFP_NOFS);
631 info = ERR_PTR(-ENOMEM);
635 static void echo_thread_key_fini(const struct lu_context *ctx,
636 struct lu_context_key *key, void *data)
638 struct echo_thread_info *info = data;
639 OBD_SLAB_FREE_PTR(info, echo_thread_kmem);
642 static void echo_thread_key_exit(const struct lu_context *ctx,
643 struct lu_context_key *key, void *data)
647 static struct lu_context_key echo_thread_key = {
648 .lct_tags = LCT_CL_THREAD,
649 .lct_init = echo_thread_key_init,
650 .lct_fini = echo_thread_key_fini,
651 .lct_exit = echo_thread_key_exit
654 static void *echo_session_key_init(const struct lu_context *ctx,
655 struct lu_context_key *key)
657 struct echo_session_info *session;
659 OBD_SLAB_ALLOC_PTR_GFP(session, echo_session_kmem, GFP_NOFS);
661 session = ERR_PTR(-ENOMEM);
665 static void echo_session_key_fini(const struct lu_context *ctx,
666 struct lu_context_key *key, void *data)
668 struct echo_session_info *session = data;
669 OBD_SLAB_FREE_PTR(session, echo_session_kmem);
672 static void echo_session_key_exit(const struct lu_context *ctx,
673 struct lu_context_key *key, void *data)
677 static struct lu_context_key echo_session_key = {
678 .lct_tags = LCT_SESSION,
679 .lct_init = echo_session_key_init,
680 .lct_fini = echo_session_key_fini,
681 .lct_exit = echo_session_key_exit
684 LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key);
686 #ifdef HAVE_SERVER_SUPPORT
687 # define ECHO_SEQ_WIDTH 0xffffffff
688 static int echo_fid_init(struct echo_device *ed, char *obd_name,
689 struct seq_server_site *ss)
695 OBD_ALLOC_PTR(ed->ed_cl_seq);
696 if (ed->ed_cl_seq == NULL)
699 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
701 GOTO(out_free_seq, rc = -ENOMEM);
703 snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s", obd_name);
705 /* Init client side sequence-manager */
706 rc = seq_client_init(ed->ed_cl_seq, NULL,
708 prefix, ss->ss_server_seq);
709 ed->ed_cl_seq->lcs_width = ECHO_SEQ_WIDTH;
710 OBD_FREE(prefix, MAX_OBD_NAME + 5);
712 GOTO(out_free_seq, rc);
717 OBD_FREE_PTR(ed->ed_cl_seq);
718 ed->ed_cl_seq = NULL;
722 static int echo_fid_fini(struct obd_device *obddev)
724 struct echo_device *ed = obd2echo_dev(obddev);
727 if (ed->ed_cl_seq != NULL) {
728 seq_client_fini(ed->ed_cl_seq);
729 OBD_FREE_PTR(ed->ed_cl_seq);
730 ed->ed_cl_seq = NULL;
736 static void echo_ed_los_fini(const struct lu_env *env, struct echo_device *ed)
740 if (ed != NULL && ed->ed_next_ismd && ed->ed_los != NULL) {
741 local_oid_storage_fini(env, ed->ed_los);
747 echo_md_local_file_create(const struct lu_env *env, struct echo_md_device *emd,
748 struct local_oid_storage *los,
749 const struct lu_fid *pfid, const char *name,
750 __u32 mode, struct lu_fid *fid)
752 struct dt_object *parent = NULL;
753 struct dt_object *dto = NULL;
757 LASSERT(!fid_is_zero(pfid));
758 parent = dt_locate(env, emd->emd_bottom, pfid);
759 if (unlikely(IS_ERR(parent)))
760 RETURN(PTR_ERR(parent));
762 /* create local file with @fid */
763 dto = local_file_find_or_create_with_fid(env, emd->emd_bottom, fid,
766 GOTO(out_put, rc = PTR_ERR(dto));
768 *fid = *lu_object_fid(&dto->do_lu);
769 /* since stack is not fully set up the local_storage uses own stack
770 * and we should drop its object from cache */
771 lu_object_put_nocache(env, &dto->do_lu);
775 lu_object_put(env, &parent->do_lu);
780 echo_md_root_get(const struct lu_env *env, struct echo_md_device *emd,
781 struct echo_device *ed)
787 /* Setup local dirs */
788 fid.f_seq = FID_SEQ_LOCAL_NAME;
791 rc = local_oid_storage_init(env, emd->emd_bottom, &fid, &ed->ed_los);
795 lu_echo_root_fid(&fid);
796 if (echo_md_seq_site(emd)->ss_node_id == 0) {
797 rc = echo_md_local_file_create(env, emd, ed->ed_los,
798 &emd->emd_local_root_fid,
799 echo_md_root_dir_name, S_IFDIR |
800 S_IRUGO | S_IWUSR | S_IXUGO,
803 CERROR("%s: create md echo root fid failed: rc = %d\n",
804 emd2obd_dev(emd)->obd_name, rc);
808 ed->ed_root_fid = fid;
812 echo_ed_los_fini(env, ed);
816 #endif /* HAVE_SERVER_SUPPORT */
818 static struct lu_device *echo_device_alloc(const struct lu_env *env,
819 struct lu_device_type *t,
820 struct lustre_cfg *cfg)
822 struct lu_device *next;
823 struct echo_device *ed;
824 struct cl_device *cd;
825 struct obd_device *obd = NULL; /* to keep compiler happy */
826 struct obd_device *tgt;
827 const char *tgt_type_name;
834 GOTO(out, rc = -ENOMEM);
838 rc = cl_device_init(cd, t);
842 cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
845 obd = class_name2obd(lustre_cfg_string(cfg, 0));
846 LASSERT(obd != NULL);
847 LASSERT(env != NULL);
849 tgt = class_name2obd(lustre_cfg_string(cfg, 1));
851 CERROR("Can not find tgt device %s\n",
852 lustre_cfg_string(cfg, 1));
853 GOTO(out, rc = -ENODEV);
856 next = tgt->obd_lu_dev;
858 if (strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME) == 0) {
859 ed->ed_next_ismd = 1;
860 } else if (strcmp(tgt->obd_type->typ_name, LUSTRE_OST_NAME) == 0 ||
861 strcmp(tgt->obd_type->typ_name, LUSTRE_OSC_NAME) == 0) {
862 ed->ed_next_ismd = 0;
863 rc = echo_site_init(env, ed);
867 GOTO(out, rc = -EINVAL);
872 rc = echo_client_setup(env, obd, cfg);
876 ed->ed_ec = &obd->u.echo_client;
879 if (ed->ed_next_ismd) {
880 #ifdef HAVE_SERVER_SUPPORT
881 /* Suppose to connect to some Metadata layer */
882 struct lu_site *ls = NULL;
883 struct lu_device *ld = NULL;
884 struct md_device *md = NULL;
885 struct echo_md_device *emd = NULL;
889 CERROR("%s is not lu device type!\n",
890 lustre_cfg_string(cfg, 1));
891 GOTO(out, rc = -EINVAL);
894 tgt_type_name = lustre_cfg_string(cfg, 2);
895 if (!tgt_type_name) {
896 CERROR("%s no type name for echo %s setup\n",
897 lustre_cfg_string(cfg, 1),
898 tgt->obd_type->typ_name);
899 GOTO(out, rc = -EINVAL);
904 spin_lock(&ls->ls_ld_lock);
905 list_for_each_entry(ld, &ls->ls_ld_linkage, ld_linkage) {
906 if (strcmp(ld->ld_type->ldt_name, tgt_type_name) == 0) {
911 spin_unlock(&ls->ls_ld_lock);
914 CERROR("%s is not lu device type!\n",
915 lustre_cfg_string(cfg, 1));
916 GOTO(out, rc = -EINVAL);
920 /* For MD echo client, it will use the site in MDS stack */
922 ed->ed_cl.cd_lu_dev.ld_site = ls;
923 rc = echo_fid_init(ed, obd->obd_name, lu_site2seq(ls));
925 CERROR("echo fid init error %d\n", rc);
929 md = lu2md_dev(next);
930 emd = lu2emd_dev(&md->md_lu_dev);
931 rc = echo_md_root_get(env, emd, ed);
933 CERROR("%s: get root error: rc = %d\n",
934 emd2obd_dev(emd)->obd_name, rc);
937 #else /* !HAVE_SERVER_SUPPORT */
938 CERROR("Local operations are NOT supported on client side. "
939 "Only remote operations are supported. Metadata client "
940 "must be run on server side.\n");
941 GOTO(out, rc = -EOPNOTSUPP);
942 #endif /* HAVE_SERVER_SUPPORT */
944 /* if echo client is to be stacked upon ost device, the next is
945 * NULL since ost is not a clio device so far */
946 if (next != NULL && !lu_device_is_cl(next))
949 tgt_type_name = tgt->obd_type->typ_name;
951 LASSERT(next != NULL);
952 if (next->ld_site != NULL)
953 GOTO(out, rc = -EBUSY);
955 next->ld_site = ed->ed_site;
956 rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
957 next->ld_type->ldt_name,
962 LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0);
966 RETURN(&cd->cd_lu_dev);
971 rc2 = echo_client_cleanup(obd);
973 CERROR("Cleanup obd device %s error(%d)\n",
978 echo_site_fini(env, ed);
980 cl_device_fini(&ed->ed_cl);
990 static int echo_device_init(const struct lu_env *env, struct lu_device *d,
991 const char *name, struct lu_device *next)
997 static struct lu_device *echo_device_fini(const struct lu_env *env,
1000 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
1001 struct lu_device *next = ed->ed_next;
1003 while (next && !ed->ed_next_ismd)
1004 next = next->ld_type->ldt_ops->ldto_device_fini(env, next);
1008 static void echo_lock_release(const struct lu_env *env,
1009 struct echo_lock *ecl,
1012 struct cl_lock *clk = echo_lock2cl(ecl);
1014 cl_lock_release(env, clk);
1017 static struct lu_device *echo_device_free(const struct lu_env *env,
1018 struct lu_device *d)
1020 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
1021 struct echo_client_obd *ec = ed->ed_ec;
1022 struct echo_object *eco;
1023 struct lu_device *next = ed->ed_next;
1025 CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n",
1028 lu_site_purge(env, ed->ed_site, -1);
1030 /* check if there are objects still alive.
1031 * It shouldn't have any object because lu_site_purge would cleanup
1032 * all of cached objects. Anyway, probably the echo device is being
1033 * parallelly accessed.
1035 spin_lock(&ec->ec_lock);
1036 list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain)
1037 eco->eo_deleted = 1;
1038 spin_unlock(&ec->ec_lock);
1041 lu_site_purge(env, ed->ed_site, -1);
1044 "Waiting for the reference of echo object to be dropped\n");
1046 /* Wait for the last reference to be dropped. */
1047 spin_lock(&ec->ec_lock);
1048 while (!list_empty(&ec->ec_objects)) {
1049 spin_unlock(&ec->ec_lock);
1050 CERROR("echo_client still has objects at cleanup time, "
1051 "wait for 1 second\n");
1052 set_current_state(TASK_UNINTERRUPTIBLE);
1053 schedule_timeout(cfs_time_seconds(1));
1054 lu_site_purge(env, ed->ed_site, -1);
1055 spin_lock(&ec->ec_lock);
1057 spin_unlock(&ec->ec_lock);
1059 LASSERT(list_empty(&ec->ec_locks));
1061 CDEBUG(D_INFO, "No object exists, exiting...\n");
1063 echo_client_cleanup(d->ld_obd);
1064 #ifdef HAVE_SERVER_SUPPORT
1065 echo_fid_fini(d->ld_obd);
1066 echo_ed_los_fini(env, ed);
1068 while (next && !ed->ed_next_ismd)
1069 next = next->ld_type->ldt_ops->ldto_device_free(env, next);
1071 LASSERT(ed->ed_site == d->ld_site);
1072 echo_site_fini(env, ed);
1073 cl_device_fini(&ed->ed_cl);
1079 static const struct lu_device_type_operations echo_device_type_ops = {
1080 .ldto_init = echo_type_init,
1081 .ldto_fini = echo_type_fini,
1083 .ldto_start = echo_type_start,
1084 .ldto_stop = echo_type_stop,
1086 .ldto_device_alloc = echo_device_alloc,
1087 .ldto_device_free = echo_device_free,
1088 .ldto_device_init = echo_device_init,
1089 .ldto_device_fini = echo_device_fini
1092 static struct lu_device_type echo_device_type = {
1093 .ldt_tags = LU_DEVICE_CL,
1094 .ldt_name = LUSTRE_ECHO_CLIENT_NAME,
1095 .ldt_ops = &echo_device_type_ops,
1096 .ldt_ctx_tags = LCT_CL_THREAD | LCT_MD_THREAD | LCT_DT_THREAD,
1100 /** \defgroup echo_exports Exported operations
1102 * exporting functions to echo client
1107 /* Interfaces to echo client obd device */
1108 static struct echo_object *
1109 cl_echo_object_find(struct echo_device *d, const struct ost_id *oi)
1112 struct echo_thread_info *info;
1113 struct echo_object_conf *conf;
1114 struct echo_object *eco;
1115 struct cl_object *obj;
1116 struct lov_oinfo *oinfo = NULL;
1122 LASSERTF(ostid_id(oi) != 0, DOSTID"\n", POSTID(oi));
1123 LASSERTF(ostid_seq(oi) == FID_SEQ_ECHO, DOSTID"\n", POSTID(oi));
1125 /* Never return an object if the obd is to be freed. */
1126 if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
1127 RETURN(ERR_PTR(-ENODEV));
1129 env = cl_env_get(&refcheck);
1131 RETURN((void *)env);
1133 info = echo_env_info(env);
1134 conf = &info->eti_conf;
1136 OBD_ALLOC_PTR(oinfo);
1138 GOTO(out, eco = ERR_PTR(-ENOMEM));
1140 oinfo->loi_oi = *oi;
1141 conf->eoc_cl.u.coc_oinfo = oinfo;
1144 /* If echo_object_init() is successful then ownership of oinfo
1145 * is transferred to the object. */
1146 conf->eoc_oinfo = &oinfo;
1148 fid = &info->eti_fid;
1149 rc = ostid_to_fid(fid, oi, 0);
1151 GOTO(out, eco = ERR_PTR(rc));
1153 /* In the function below, .hs_keycmp resolves to
1154 * lu_obj_hop_keycmp() */
1155 /* coverity[overrun-buffer-val] */
1156 obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl);
1158 GOTO(out, eco = (void*)obj);
1160 eco = cl2echo_obj(obj);
1161 if (eco->eo_deleted) {
1162 cl_object_put(env, obj);
1163 eco = ERR_PTR(-EAGAIN);
1168 OBD_FREE_PTR(oinfo);
1170 cl_env_put(env, &refcheck);
1174 static int cl_echo_object_put(struct echo_object *eco)
1177 struct cl_object *obj = echo_obj2cl(eco);
1181 env = cl_env_get(&refcheck);
1183 RETURN(PTR_ERR(env));
1185 /* an external function to kill an object? */
1186 if (eco->eo_deleted) {
1187 struct lu_object_header *loh = obj->co_lu.lo_header;
1188 LASSERT(&eco->eo_hdr == luh2coh(loh));
1189 set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
1192 cl_object_put(env, obj);
1193 cl_env_put(env, &refcheck);
1197 static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco,
1198 u64 start, u64 end, int mode,
1199 __u64 *cookie , __u32 enqflags)
1202 struct cl_lock *lck;
1203 struct cl_object *obj;
1204 struct cl_lock_descr *descr;
1205 struct echo_thread_info *info;
1209 info = echo_env_info(env);
1211 lck = &info->eti_lock;
1212 obj = echo_obj2cl(eco);
1214 memset(lck, 0, sizeof(*lck));
1215 descr = &lck->cll_descr;
1216 descr->cld_obj = obj;
1217 descr->cld_start = cl_index(obj, start);
1218 descr->cld_end = cl_index(obj, end);
1219 descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ;
1220 descr->cld_enq_flags = enqflags;
1223 rc = cl_lock_request(env, io, lck);
1225 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
1226 struct echo_lock *el;
1228 el = cl2echo_lock(cl_lock_at(lck, &echo_device_type));
1229 spin_lock(&ec->ec_lock);
1230 if (list_empty(&el->el_chain)) {
1231 list_add(&el->el_chain, &ec->ec_locks);
1232 el->el_cookie = ++ec->ec_unique;
1234 atomic_inc(&el->el_refcount);
1235 *cookie = el->el_cookie;
1236 spin_unlock(&ec->ec_lock);
1241 static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed,
1244 struct echo_client_obd *ec = ed->ed_ec;
1245 struct echo_lock *ecl = NULL;
1246 struct list_head *el;
1247 int found = 0, still_used = 0;
1250 LASSERT(ec != NULL);
1251 spin_lock(&ec->ec_lock);
1252 list_for_each(el, &ec->ec_locks) {
1253 ecl = list_entry(el, struct echo_lock, el_chain);
1254 CDEBUG(D_INFO, "ecl: %p, cookie: "LPX64"\n", ecl, ecl->el_cookie);
1255 found = (ecl->el_cookie == cookie);
1257 if (atomic_dec_and_test(&ecl->el_refcount))
1258 list_del_init(&ecl->el_chain);
1264 spin_unlock(&ec->ec_lock);
1269 echo_lock_release(env, ecl, still_used);
1273 static void echo_commit_callback(const struct lu_env *env, struct cl_io *io,
1274 struct cl_page *page)
1276 struct echo_thread_info *info;
1277 struct cl_2queue *queue;
1279 info = echo_env_info(env);
1280 LASSERT(io == &info->eti_io);
1282 queue = &info->eti_queue;
1283 cl_page_list_add(&queue->c2_qout, page);
1286 static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset,
1287 struct page **pages, int npages, int async)
1290 struct echo_thread_info *info;
1291 struct cl_object *obj = echo_obj2cl(eco);
1292 struct echo_device *ed = eco->eo_dev;
1293 struct cl_2queue *queue;
1295 struct cl_page *clp;
1296 struct lustre_handle lh = { 0 };
1297 int page_size = cl_page_size(obj);
1303 LASSERT((offset & ~PAGE_MASK) == 0);
1304 LASSERT(ed->ed_next != NULL);
1305 env = cl_env_get(&refcheck);
1307 RETURN(PTR_ERR(env));
1309 info = echo_env_info(env);
1311 queue = &info->eti_queue;
1313 cl_2queue_init(queue);
1315 io->ci_ignore_layout = 1;
1316 rc = cl_io_init(env, io, CIT_MISC, obj);
1322 rc = cl_echo_enqueue0(env, eco, offset,
1323 offset + npages * PAGE_CACHE_SIZE - 1,
1324 rw == READ ? LCK_PR : LCK_PW, &lh.cookie,
1327 GOTO(error_lock, rc);
1329 for (i = 0; i < npages; i++) {
1331 clp = cl_page_find(env, obj, cl_index(obj, offset),
1332 pages[i], CPT_TRANSIENT);
1337 LASSERT(clp->cp_type == CPT_TRANSIENT);
1339 rc = cl_page_own(env, io, clp);
1341 LASSERT(clp->cp_state == CPS_FREEING);
1342 cl_page_put(env, clp);
1346 cl_2queue_add(queue, clp);
1348 /* drop the reference count for cl_page_find, so that the page
1349 * will be freed in cl_2queue_fini. */
1350 cl_page_put(env, clp);
1351 cl_page_clip(env, clp, 0, page_size);
1353 offset += page_size;
1357 enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE;
1359 async = async && (typ == CRT_WRITE);
1361 rc = cl_io_commit_async(env, io, &queue->c2_qin,
1363 echo_commit_callback);
1365 rc = cl_io_submit_sync(env, io, typ, queue, 0);
1366 CDEBUG(D_INFO, "echo_client %s write returns %d\n",
1367 async ? "async" : "sync", rc);
1370 cl_echo_cancel0(env, ed, lh.cookie);
1373 cl_2queue_discard(env, io, queue);
1374 cl_2queue_disown(env, io, queue);
1375 cl_2queue_fini(env, queue);
1376 cl_io_fini(env, io);
1378 cl_env_put(env, &refcheck);
1381 /** @} echo_exports */
1384 static u64 last_object_id;
1386 #ifdef HAVE_SERVER_SUPPORT
1387 static inline void echo_md_build_name(struct lu_name *lname, char *name,
1390 sprintf(name, LPU64, id);
1391 lname->ln_name = name;
1392 lname->ln_namelen = strlen(name);
1395 /* similar to mdt_attr_get_complex */
1396 static int echo_big_lmm_get(const struct lu_env *env, struct md_object *o,
1399 struct echo_thread_info *info = echo_env_info(env);
1404 LASSERT(ma->ma_lmm_size > 0);
1406 rc = mo_xattr_get(env, o, &LU_BUF_NULL, XATTR_NAME_LOV);
1410 /* big_lmm may need to be grown */
1411 if (info->eti_big_lmmsize < rc) {
1412 int size = size_roundup_power2(rc);
1414 if (info->eti_big_lmmsize > 0) {
1415 /* free old buffer */
1416 LASSERT(info->eti_big_lmm);
1417 OBD_FREE_LARGE(info->eti_big_lmm,
1418 info->eti_big_lmmsize);
1419 info->eti_big_lmm = NULL;
1420 info->eti_big_lmmsize = 0;
1423 OBD_ALLOC_LARGE(info->eti_big_lmm, size);
1424 if (info->eti_big_lmm == NULL)
1426 info->eti_big_lmmsize = size;
1428 LASSERT(info->eti_big_lmmsize >= rc);
1430 info->eti_buf.lb_buf = info->eti_big_lmm;
1431 info->eti_buf.lb_len = info->eti_big_lmmsize;
1432 rc = mo_xattr_get(env, o, &info->eti_buf, XATTR_NAME_LOV);
1436 ma->ma_valid |= MA_LOV;
1437 ma->ma_lmm = info->eti_big_lmm;
1438 ma->ma_lmm_size = rc;
1443 static int echo_attr_get_complex(const struct lu_env *env,
1444 struct md_object *next,
1447 struct echo_thread_info *info = echo_env_info(env);
1448 struct lu_buf *buf = &info->eti_buf;
1449 umode_t mode = lu_object_attr(&next->mo_lu);
1450 int need = ma->ma_need;
1457 if (need & MA_INODE) {
1458 ma->ma_need = MA_INODE;
1459 rc = mo_attr_get(env, next, ma);
1462 ma->ma_valid |= MA_INODE;
1465 if (need & MA_LOV) {
1466 if (S_ISREG(mode) || S_ISDIR(mode)) {
1467 LASSERT(ma->ma_lmm_size > 0);
1468 buf->lb_buf = ma->ma_lmm;
1469 buf->lb_len = ma->ma_lmm_size;
1470 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LOV);
1472 ma->ma_lmm_size = rc2;
1473 ma->ma_valid |= MA_LOV;
1474 } else if (rc2 == -ENODATA) {
1476 ma->ma_lmm_size = 0;
1477 } else if (rc2 == -ERANGE) {
1478 rc2 = echo_big_lmm_get(env, next, ma);
1480 GOTO(out, rc = rc2);
1482 GOTO(out, rc = rc2);
1487 #ifdef CONFIG_FS_POSIX_ACL
1488 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1489 buf->lb_buf = ma->ma_acl;
1490 buf->lb_len = ma->ma_acl_size;
1491 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1493 ma->ma_acl_size = rc2;
1494 ma->ma_valid |= MA_ACL_DEF;
1495 } else if (rc2 == -ENODATA) {
1497 ma->ma_acl_size = 0;
1499 GOTO(out, rc = rc2);
1505 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
1506 rc, ma->ma_valid, ma->ma_lmm);
1511 echo_md_create_internal(const struct lu_env *env, struct echo_device *ed,
1512 struct md_object *parent, struct lu_fid *fid,
1513 struct lu_name *lname, struct md_op_spec *spec,
1516 struct lu_object *ec_child, *child;
1517 struct lu_device *ld = ed->ed_next;
1518 struct echo_thread_info *info = echo_env_info(env);
1519 struct lu_fid *fid2 = &info->eti_fid2;
1520 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
1525 rc = mdo_lookup(env, parent, lname, fid2, spec);
1528 else if (rc != -ENOENT)
1531 ec_child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev,
1533 if (IS_ERR(ec_child)) {
1534 CERROR("Can not find the child "DFID": rc = %ld\n", PFID(fid),
1536 RETURN(PTR_ERR(ec_child));
1539 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1540 if (child == NULL) {
1541 CERROR("Can not locate the child "DFID"\n", PFID(fid));
1542 GOTO(out_put, rc = -EINVAL);
1545 CDEBUG(D_RPCTRACE, "Start creating object "DFID" %s %p\n",
1546 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1549 * Do not perform lookup sanity check. We know that name does not exist.
1551 spec->sp_cr_lookup = 0;
1552 rc = mdo_create(env, parent, lname, lu2md(child), spec, ma);
1554 CERROR("Can not create child "DFID": rc = %d\n", PFID(fid), rc);
1557 CDEBUG(D_RPCTRACE, "End creating object "DFID" %s %p rc = %d\n",
1558 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent, rc);
1561 lu_object_put(env, ec_child);
1565 static int echo_set_lmm_size(const struct lu_env *env, struct lu_device *ld,
1568 struct echo_thread_info *info = echo_env_info(env);
1570 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
1571 ma->ma_lmm = (void *)&info->eti_lmm;
1572 ma->ma_lmm_size = sizeof(info->eti_lmm);
1574 LASSERT(info->eti_big_lmmsize);
1575 ma->ma_lmm = info->eti_big_lmm;
1576 ma->ma_lmm_size = info->eti_big_lmmsize;
1582 static int echo_create_md_object(const struct lu_env *env,
1583 struct echo_device *ed,
1584 struct lu_object *ec_parent,
1586 char *name, int namelen,
1587 __u64 id, __u32 mode, int count,
1588 int stripe_count, int stripe_offset)
1590 struct lu_object *parent;
1591 struct echo_thread_info *info = echo_env_info(env);
1592 struct lu_name *lname = &info->eti_lname;
1593 struct md_op_spec *spec = &info->eti_spec;
1594 struct md_attr *ma = &info->eti_ma;
1595 struct lu_device *ld = ed->ed_next;
1601 if (ec_parent == NULL)
1603 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1607 memset(ma, 0, sizeof(*ma));
1608 memset(spec, 0, sizeof(*spec));
1609 if (stripe_count != 0) {
1610 spec->sp_cr_flags |= FMODE_WRITE;
1611 echo_set_lmm_size(env, ld, ma);
1612 if (stripe_count != -1) {
1613 struct lov_user_md_v3 *lum = &info->eti_lum;
1615 lum->lmm_magic = LOV_USER_MAGIC_V3;
1616 lum->lmm_stripe_count = stripe_count;
1617 lum->lmm_stripe_offset = stripe_offset;
1618 lum->lmm_pattern = 0;
1619 spec->u.sp_ea.eadata = lum;
1620 spec->u.sp_ea.eadatalen = sizeof(*lum);
1621 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1625 ma->ma_attr.la_mode = mode;
1626 ma->ma_attr.la_valid = LA_CTIME | LA_MODE;
1627 ma->ma_attr.la_ctime = cfs_time_current_64();
1630 lname->ln_name = name;
1631 lname->ln_namelen = namelen;
1632 /* If name is specified, only create one object by name */
1633 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1638 /* Create multiple object sequenced by id */
1639 for (i = 0; i < count; i++) {
1640 char *tmp_name = info->eti_name;
1642 echo_md_build_name(lname, tmp_name, id);
1644 rc = echo_md_create_internal(env, ed, lu2md(parent), fid, lname,
1647 CERROR("Can not create child %s: rc = %d\n", tmp_name,
1658 static struct lu_object *echo_md_lookup(const struct lu_env *env,
1659 struct echo_device *ed,
1660 struct md_object *parent,
1661 struct lu_name *lname)
1663 struct echo_thread_info *info = echo_env_info(env);
1664 struct lu_fid *fid = &info->eti_fid;
1665 struct lu_object *child;
1669 CDEBUG(D_INFO, "lookup %s in parent "DFID" %p\n", lname->ln_name,
1671 rc = mdo_lookup(env, parent, lname, fid, NULL);
1673 CERROR("lookup %s: rc = %d\n", lname->ln_name, rc);
1674 RETURN(ERR_PTR(rc));
1677 /* In the function below, .hs_keycmp resolves to
1678 * lu_obj_hop_keycmp() */
1679 /* coverity[overrun-buffer-val] */
1680 child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1685 static int echo_setattr_object(const struct lu_env *env,
1686 struct echo_device *ed,
1687 struct lu_object *ec_parent,
1688 __u64 id, int count)
1690 struct lu_object *parent;
1691 struct echo_thread_info *info = echo_env_info(env);
1692 struct lu_name *lname = &info->eti_lname;
1693 char *name = info->eti_name;
1694 struct lu_device *ld = ed->ed_next;
1695 struct lu_buf *buf = &info->eti_buf;
1701 if (ec_parent == NULL)
1703 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1707 for (i = 0; i < count; i++) {
1708 struct lu_object *ec_child, *child;
1710 echo_md_build_name(lname, name, id);
1712 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1713 if (IS_ERR(ec_child)) {
1714 CERROR("Can't find child %s: rc = %ld\n",
1715 lname->ln_name, PTR_ERR(ec_child));
1716 RETURN(PTR_ERR(ec_child));
1719 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1720 if (child == NULL) {
1721 CERROR("Can not locate the child %s\n", lname->ln_name);
1722 lu_object_put(env, ec_child);
1727 CDEBUG(D_RPCTRACE, "Start setattr object "DFID"\n",
1728 PFID(lu_object_fid(child)));
1730 buf->lb_buf = info->eti_xattr_buf;
1731 buf->lb_len = sizeof(info->eti_xattr_buf);
1733 sprintf(name, "%s.test1", XATTR_USER_PREFIX);
1734 rc = mo_xattr_set(env, lu2md(child), buf, name,
1737 CERROR("Can not setattr child "DFID": rc = %d\n",
1738 PFID(lu_object_fid(child)), rc);
1739 lu_object_put(env, ec_child);
1742 CDEBUG(D_RPCTRACE, "End setattr object "DFID"\n",
1743 PFID(lu_object_fid(child)));
1745 lu_object_put(env, ec_child);
1750 static int echo_getattr_object(const struct lu_env *env,
1751 struct echo_device *ed,
1752 struct lu_object *ec_parent,
1753 __u64 id, int count)
1755 struct lu_object *parent;
1756 struct echo_thread_info *info = echo_env_info(env);
1757 struct lu_name *lname = &info->eti_lname;
1758 char *name = info->eti_name;
1759 struct md_attr *ma = &info->eti_ma;
1760 struct lu_device *ld = ed->ed_next;
1766 if (ec_parent == NULL)
1768 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1772 memset(ma, 0, sizeof(*ma));
1773 ma->ma_need |= MA_INODE | MA_LOV | MA_PFID | MA_HSM | MA_ACL_DEF;
1774 ma->ma_acl = info->eti_xattr_buf;
1775 ma->ma_acl_size = sizeof(info->eti_xattr_buf);
1777 for (i = 0; i < count; i++) {
1778 struct lu_object *ec_child, *child;
1781 echo_md_build_name(lname, name, id);
1782 echo_set_lmm_size(env, ld, ma);
1784 ec_child = echo_md_lookup(env, ed, lu2md(parent), lname);
1785 if (IS_ERR(ec_child)) {
1786 CERROR("Can't find child %s: rc = %ld\n",
1787 lname->ln_name, PTR_ERR(ec_child));
1788 RETURN(PTR_ERR(ec_child));
1791 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1792 if (child == NULL) {
1793 CERROR("Can not locate the child %s\n", lname->ln_name);
1794 lu_object_put(env, ec_child);
1798 CDEBUG(D_RPCTRACE, "Start getattr object "DFID"\n",
1799 PFID(lu_object_fid(child)));
1800 rc = echo_attr_get_complex(env, lu2md(child), ma);
1802 CERROR("Can not getattr child "DFID": rc = %d\n",
1803 PFID(lu_object_fid(child)), rc);
1804 lu_object_put(env, ec_child);
1807 CDEBUG(D_RPCTRACE, "End getattr object "DFID"\n",
1808 PFID(lu_object_fid(child)));
1810 lu_object_put(env, ec_child);
1816 static int echo_lookup_object(const struct lu_env *env,
1817 struct echo_device *ed,
1818 struct lu_object *ec_parent,
1819 __u64 id, int count)
1821 struct lu_object *parent;
1822 struct echo_thread_info *info = echo_env_info(env);
1823 struct lu_name *lname = &info->eti_lname;
1824 char *name = info->eti_name;
1825 struct lu_fid *fid = &info->eti_fid;
1826 struct lu_device *ld = ed->ed_next;
1830 if (ec_parent == NULL)
1832 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1836 /*prepare the requests*/
1837 for (i = 0; i < count; i++) {
1838 echo_md_build_name(lname, name, id);
1840 CDEBUG(D_RPCTRACE, "Start lookup object "DFID" %s %p\n",
1841 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1843 rc = mdo_lookup(env, lu2md(parent), lname, fid, NULL);
1845 CERROR("Can not lookup child %s: rc = %d\n", name, rc);
1848 CDEBUG(D_RPCTRACE, "End lookup object "DFID" %s %p\n",
1849 PFID(lu_object_fid(parent)), lname->ln_name, parent);
1856 static int echo_md_destroy_internal(const struct lu_env *env,
1857 struct echo_device *ed,
1858 struct md_object *parent,
1859 struct lu_name *lname,
1862 struct lu_device *ld = ed->ed_next;
1863 struct lu_object *ec_child;
1864 struct lu_object *child;
1869 ec_child = echo_md_lookup(env, ed, parent, lname);
1870 if (IS_ERR(ec_child)) {
1871 CERROR("Can't find child %s: rc = %ld\n", lname->ln_name,
1873 RETURN(PTR_ERR(ec_child));
1876 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1877 if (child == NULL) {
1878 CERROR("Can not locate the child %s\n", lname->ln_name);
1879 GOTO(out_put, rc = -EINVAL);
1882 if (lu_object_remote(child)) {
1883 CERROR("Can not destroy remote object %s: rc = %d\n",
1884 lname->ln_name, -EPERM);
1885 GOTO(out_put, rc = -EPERM);
1887 CDEBUG(D_RPCTRACE, "Start destroy object "DFID" %s %p\n",
1888 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1890 rc = mdo_unlink(env, parent, lu2md(child), lname, ma, 0);
1892 CERROR("Can not unlink child %s: rc = %d\n",
1893 lname->ln_name, rc);
1896 CDEBUG(D_RPCTRACE, "End destroy object "DFID" %s %p\n",
1897 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1899 lu_object_put(env, ec_child);
1903 static int echo_destroy_object(const struct lu_env *env,
1904 struct echo_device *ed,
1905 struct lu_object *ec_parent,
1906 char *name, int namelen,
1907 __u64 id, __u32 mode,
1910 struct echo_thread_info *info = echo_env_info(env);
1911 struct lu_name *lname = &info->eti_lname;
1912 struct md_attr *ma = &info->eti_ma;
1913 struct lu_device *ld = ed->ed_next;
1914 struct lu_object *parent;
1919 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1923 memset(ma, 0, sizeof(*ma));
1924 ma->ma_attr.la_mode = mode;
1925 ma->ma_attr.la_valid = LA_CTIME;
1926 ma->ma_attr.la_ctime = cfs_time_current_64();
1927 ma->ma_need = MA_INODE;
1931 lname->ln_name = name;
1932 lname->ln_namelen = namelen;
1933 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1938 /*prepare the requests*/
1939 for (i = 0; i < count; i++) {
1940 char *tmp_name = info->eti_name;
1943 echo_md_build_name(lname, tmp_name, id);
1945 rc = echo_md_destroy_internal(env, ed, lu2md(parent), lname,
1948 CERROR("Can not unlink child %s: rc = %d\n", name, rc);
1957 static struct lu_object *echo_resolve_path(const struct lu_env *env,
1958 struct echo_device *ed, char *path,
1961 struct lu_device *ld = ed->ed_next;
1962 struct echo_thread_info *info = echo_env_info(env);
1963 struct lu_fid *fid = &info->eti_fid;
1964 struct lu_name *lname = &info->eti_lname;
1965 struct lu_object *parent = NULL;
1966 struct lu_object *child = NULL;
1970 *fid = ed->ed_root_fid;
1972 /* In the function below, .hs_keycmp resolves to
1973 * lu_obj_hop_keycmp() */
1974 /* coverity[overrun-buffer-val] */
1975 parent = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1976 if (IS_ERR(parent)) {
1977 CERROR("Can not find the parent "DFID": rc = %ld\n",
1978 PFID(fid), PTR_ERR(parent));
1983 struct lu_object *ld_parent;
1986 e = strsep(&path, "/");
1991 if (!path || path[0] == '\0')
1997 lname->ln_namelen = strlen(e);
1999 ld_parent = lu_object_locate(parent->lo_header, ld->ld_type);
2000 if (ld_parent == NULL) {
2001 lu_object_put(env, parent);
2006 child = echo_md_lookup(env, ed, lu2md(ld_parent), lname);
2007 lu_object_put(env, parent);
2008 if (IS_ERR(child)) {
2009 rc = (int)PTR_ERR(child);
2010 CERROR("lookup %s under parent "DFID": rc = %d\n",
2011 lname->ln_name, PFID(lu_object_fid(ld_parent)),
2018 RETURN(ERR_PTR(rc));
2023 static void echo_ucred_init(struct lu_env *env)
2025 struct lu_ucred *ucred = lu_ucred(env);
2027 ucred->uc_valid = UCRED_INVALID;
2029 ucred->uc_suppgids[0] = -1;
2030 ucred->uc_suppgids[1] = -1;
2032 ucred->uc_uid = ucred->uc_o_uid =
2033 from_kuid(&init_user_ns, current_uid());
2034 ucred->uc_gid = ucred->uc_o_gid =
2035 from_kgid(&init_user_ns, current_gid());
2036 ucred->uc_fsuid = ucred->uc_o_fsuid =
2037 from_kuid(&init_user_ns, current_fsuid());
2038 ucred->uc_fsgid = ucred->uc_o_fsgid =
2039 from_kgid(&init_user_ns, current_fsgid());
2040 ucred->uc_cap = cfs_curproc_cap_pack();
2042 /* remove fs privilege for non-root user. */
2043 if (ucred->uc_fsuid)
2044 ucred->uc_cap &= ~CFS_CAP_FS_MASK;
2045 ucred->uc_valid = UCRED_NEW;
2048 static void echo_ucred_fini(struct lu_env *env)
2050 struct lu_ucred *ucred = lu_ucred(env);
2051 ucred->uc_valid = UCRED_INIT;
2054 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_MD_THREAD)
2055 #define ECHO_MD_SES_TAG (LCT_REMEMBER | LCT_SESSION | LCT_SERVER_SESSION)
2056 static int echo_md_handler(struct echo_device *ed, int command,
2057 char *path, int path_len, __u64 id, int count,
2058 struct obd_ioctl_data *data)
2060 struct echo_thread_info *info;
2061 struct lu_device *ld = ed->ed_next;
2064 struct lu_object *parent;
2066 int namelen = data->ioc_plen2;
2071 CERROR("MD echo client is not being initialized properly\n");
2075 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
2076 CERROR("Only support MDD layer right now!\n");
2080 env = cl_env_get(&refcheck);
2082 RETURN(PTR_ERR(env));
2084 rc = lu_env_refill_by_tags(env, ECHO_MD_CTX_TAG, ECHO_MD_SES_TAG);
2088 /* init big_lmm buffer */
2089 info = echo_env_info(env);
2090 LASSERT(info->eti_big_lmm == NULL);
2091 OBD_ALLOC_LARGE(info->eti_big_lmm, MIN_MD_SIZE);
2092 if (info->eti_big_lmm == NULL)
2093 GOTO(out_env, rc = -ENOMEM);
2094 info->eti_big_lmmsize = MIN_MD_SIZE;
2096 parent = echo_resolve_path(env, ed, path, path_len);
2097 if (IS_ERR(parent)) {
2098 CERROR("Can not resolve the path %s: rc = %ld\n", path,
2100 GOTO(out_free, rc = PTR_ERR(parent));
2104 OBD_ALLOC(name, namelen + 1);
2106 GOTO(out_put, rc = -ENOMEM);
2107 if (copy_from_user(name, data->ioc_pbuf2, namelen))
2108 GOTO(out_name, rc = -EFAULT);
2111 echo_ucred_init(env);
2114 case ECHO_MD_CREATE:
2115 case ECHO_MD_MKDIR: {
2116 struct echo_thread_info *info = echo_env_info(env);
2117 __u32 mode = data->ioc_obdo2.o_mode;
2118 struct lu_fid *fid = &info->eti_fid;
2119 int stripe_count = (int)data->ioc_obdo2.o_misc;
2120 int stripe_index = (int)data->ioc_obdo2.o_stripe_idx;
2122 rc = ostid_to_fid(fid, &data->ioc_obdo1.o_oi, 0);
2126 /* In the function below, .hs_keycmp resolves to
2127 * lu_obj_hop_keycmp() */
2128 /* coverity[overrun-buffer-val] */
2129 rc = echo_create_md_object(env, ed, parent, fid, name, namelen,
2130 id, mode, count, stripe_count,
2134 case ECHO_MD_DESTROY:
2135 case ECHO_MD_RMDIR: {
2136 __u32 mode = data->ioc_obdo2.o_mode;
2138 rc = echo_destroy_object(env, ed, parent, name, namelen,
2142 case ECHO_MD_LOOKUP:
2143 rc = echo_lookup_object(env, ed, parent, id, count);
2145 case ECHO_MD_GETATTR:
2146 rc = echo_getattr_object(env, ed, parent, id, count);
2148 case ECHO_MD_SETATTR:
2149 rc = echo_setattr_object(env, ed, parent, id, count);
2152 CERROR("unknown command %d\n", command);
2156 echo_ucred_fini(env);
2160 OBD_FREE(name, namelen + 1);
2162 lu_object_put(env, parent);
2164 LASSERT(info->eti_big_lmm);
2165 OBD_FREE_LARGE(info->eti_big_lmm, info->eti_big_lmmsize);
2166 info->eti_big_lmm = NULL;
2167 info->eti_big_lmmsize = 0;
2169 cl_env_put(env, &refcheck);
2172 #endif /* HAVE_SERVER_SUPPORT */
2174 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
2177 struct echo_object *eco;
2178 struct echo_client_obd *ec = ed->ed_ec;
2183 if (!(oa->o_valid & OBD_MD_FLID) ||
2184 !(oa->o_valid & OBD_MD_FLGROUP) ||
2185 !fid_seq_is_echo(ostid_seq(&oa->o_oi))) {
2186 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2190 if (ostid_id(&oa->o_oi) == 0)
2191 ostid_set_id(&oa->o_oi, ++last_object_id);
2193 rc = obd_create(env, ec->ec_exp, oa);
2195 CERROR("Cannot create objects: rc = %d\n", rc);
2201 oa->o_valid |= OBD_MD_FLID;
2203 eco = cl_echo_object_find(ed, &oa->o_oi);
2205 GOTO(failed, rc = PTR_ERR(eco));
2206 cl_echo_object_put(eco);
2208 CDEBUG(D_INFO, "oa oid "DOSTID"\n", POSTID(&oa->o_oi));
2212 if (created && rc != 0)
2213 obd_destroy(env, ec->ec_exp, oa);
2216 CERROR("create object failed with: rc = %d\n", rc);
2221 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
2224 struct echo_object *eco;
2228 if (!(oa->o_valid & OBD_MD_FLID) ||
2229 !(oa->o_valid & OBD_MD_FLGROUP) ||
2230 ostid_id(&oa->o_oi) == 0) {
2231 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2236 eco = cl_echo_object_find(ed, &oa->o_oi);
2245 static void echo_put_object(struct echo_object *eco)
2249 rc = cl_echo_object_put(eco);
2251 CERROR("%s: echo client drop an object failed: rc = %d\n",
2252 eco->eo_dev->ed_ec->ec_exp->exp_obd->obd_name, rc);
2255 static void echo_client_page_debug_setup(struct page *page, int rw, u64 id,
2256 u64 offset, u64 count)
2263 /* no partial pages on the client */
2264 LASSERT(count == PAGE_CACHE_SIZE);
2268 for (delta = 0; delta < PAGE_CACHE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2269 if (rw == OBD_BRW_WRITE) {
2270 stripe_off = offset + delta;
2273 stripe_off = 0xdeadbeef00c0ffeeULL;
2274 stripe_id = 0xdeadbeef00c0ffeeULL;
2276 block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE,
2277 stripe_off, stripe_id);
2284 echo_client_page_debug_check(struct page *page, u64 id, u64 offset, u64 count)
2293 /* no partial pages on the client */
2294 LASSERT(count == PAGE_CACHE_SIZE);
2298 for (rc = delta = 0; delta < PAGE_CACHE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2299 stripe_off = offset + delta;
2302 rc2 = block_debug_check("test_brw",
2303 addr + delta, OBD_ECHO_BLOCK_SIZE,
2304 stripe_off, stripe_id);
2306 CERROR ("Error in echo object "LPX64"\n", id);
2315 static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
2316 struct echo_object *eco, u64 offset,
2317 u64 count, int async)
2320 struct brw_page *pga;
2321 struct brw_page *pgp;
2322 struct page **pages;
2331 verify = (ostid_id(&oa->o_oi) != ECHO_PERSISTENT_OBJID &&
2332 (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
2333 (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
2335 gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_IOFS : GFP_HIGHUSER;
2337 LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
2339 if ((count & (~PAGE_MASK)) != 0)
2342 /* XXX think again with misaligned I/O */
2343 npages = count >> PAGE_CACHE_SHIFT;
2345 if (rw == OBD_BRW_WRITE)
2346 brw_flags = OBD_BRW_ASYNC;
2348 OBD_ALLOC(pga, npages * sizeof(*pga));
2352 OBD_ALLOC(pages, npages * sizeof(*pages));
2353 if (pages == NULL) {
2354 OBD_FREE(pga, npages * sizeof(*pga));
2358 for (i = 0, pgp = pga, off = offset;
2360 i++, pgp++, off += PAGE_CACHE_SIZE) {
2362 LASSERT(pgp->pg == NULL); /* for cleanup */
2365 pgp->pg = alloc_page(gfp_mask);
2366 if (pgp->pg == NULL)
2370 pgp->count = PAGE_CACHE_SIZE;
2372 pgp->flag = brw_flags;
2375 echo_client_page_debug_setup(pgp->pg, rw,
2376 ostid_id(&oa->o_oi), off,
2380 /* brw mode can only be used at client */
2381 LASSERT(ed->ed_next != NULL);
2382 rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
2385 if (rc != 0 || rw != OBD_BRW_READ)
2388 for (i = 0, pgp = pga; i < npages; i++, pgp++) {
2389 if (pgp->pg == NULL)
2394 vrc = echo_client_page_debug_check(pgp->pg,
2395 ostid_id(&oa->o_oi),
2396 pgp->off, pgp->count);
2397 if (vrc != 0 && rc == 0)
2400 __free_page(pgp->pg);
2402 OBD_FREE(pga, npages * sizeof(*pga));
2403 OBD_FREE(pages, npages * sizeof(*pages));
2407 static int echo_client_prep_commit(const struct lu_env *env,
2408 struct obd_export *exp, int rw,
2409 struct obdo *oa, struct echo_object *eco,
2410 u64 offset, u64 count,
2411 u64 batch, int async)
2413 struct obd_ioobj ioo;
2414 struct niobuf_local *lnb;
2415 struct niobuf_remote rnb;
2417 u64 npages, tot_pages;
2418 int i, ret = 0, brw_flags = 0;
2422 if (count <= 0 || (count & ~PAGE_CACHE_MASK) != 0)
2425 npages = batch >> PAGE_CACHE_SHIFT;
2426 tot_pages = count >> PAGE_CACHE_SHIFT;
2428 OBD_ALLOC(lnb, npages * sizeof(struct niobuf_local));
2430 GOTO(out, ret = -ENOMEM);
2432 if (rw == OBD_BRW_WRITE && async)
2433 brw_flags |= OBD_BRW_ASYNC;
2435 obdo_to_ioobj(oa, &ioo);
2439 for (; tot_pages > 0; tot_pages -= npages) {
2442 if (tot_pages < npages)
2445 rnb.rnb_offset = off;
2446 rnb.rnb_len = npages * PAGE_CACHE_SIZE;
2447 rnb.rnb_flags = brw_flags;
2449 off += npages * PAGE_CACHE_SIZE;
2452 ret = obd_preprw(env, rw, exp, oa, 1, &ioo, &rnb, &lpages, lnb);
2456 for (i = 0; i < lpages; i++) {
2457 struct page *page = lnb[i].lnb_page;
2459 /* read past eof? */
2460 if (page == NULL && lnb[i].lnb_rc == 0)
2464 lnb[i].lnb_flags |= OBD_BRW_ASYNC;
2466 if (ostid_id(&oa->o_oi) == 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(page, rw,
2473 ostid_id(&oa->o_oi),
2474 lnb[i].lnb_file_offset,
2477 echo_client_page_debug_check(page,
2478 ostid_id(&oa->o_oi),
2479 lnb[i].lnb_file_offset,
2483 ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, &rnb, npages, lnb,
2488 /* Reuse env context. */
2489 lu_context_exit((struct lu_context *)&env->le_ctx);
2490 lu_context_enter((struct lu_context *)&env->le_ctx);
2495 OBD_FREE(lnb, npages * sizeof(struct niobuf_local));
2499 static int echo_client_brw_ioctl(const struct lu_env *env, int rw,
2500 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 obdo *oa = &data->ioc_obdo1;
2507 struct echo_object *eco;
2513 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
2515 rc = echo_get_object(&eco, ed, oa);
2519 oa->o_valid &= ~OBD_MD_FLHANDLE;
2521 /* OFD/obdfilter works only via prep/commit */
2522 test_mode = (long)data->ioc_pbuf1;
2523 if (ed->ed_next == NULL && test_mode != 3) {
2525 data->ioc_plen1 = data->ioc_count;
2531 /* Truncate batch size to maximum */
2532 if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE)
2533 data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE;
2535 switch (test_mode) {
2539 rc = echo_client_kbrw(ed, rw, oa, eco, data->ioc_offset,
2540 data->ioc_count, async);
2543 rc = echo_client_prep_commit(env, ec->ec_exp, rw, oa, eco,
2544 data->ioc_offset, data->ioc_count,
2545 data->ioc_plen1, async);
2551 echo_put_object(eco);
2557 echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2558 void *karg, void *uarg)
2560 #ifdef HAVE_SERVER_SUPPORT
2561 struct tgt_session_info *tsi;
2563 struct obd_device *obd = exp->exp_obd;
2564 struct echo_device *ed = obd2echo_dev(obd);
2565 struct echo_client_obd *ec = ed->ed_ec;
2566 struct echo_object *eco;
2567 struct obd_ioctl_data *data = karg;
2571 int rw = OBD_BRW_READ;
2573 #ifdef HAVE_SERVER_SUPPORT
2574 struct lu_context echo_session;
2578 oa = &data->ioc_obdo1;
2579 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
2580 oa->o_valid |= OBD_MD_FLGROUP;
2581 ostid_set_seq_echo(&oa->o_oi);
2584 /* This FID is unpacked just for validation at this point */
2585 rc = ostid_to_fid(&fid, &oa->o_oi, 0);
2593 rc = lu_env_init(env, LCT_DT_THREAD);
2595 GOTO(out_alloc, rc = -ENOMEM);
2597 #ifdef HAVE_SERVER_SUPPORT
2598 env->le_ses = &echo_session;
2599 rc = lu_context_init(env->le_ses, LCT_SERVER_SESSION | LCT_NOREF);
2600 if (unlikely(rc < 0))
2602 lu_context_enter(env->le_ses);
2604 tsi = tgt_ses_info(env);
2605 tsi->tsi_exp = ec->ec_exp;
2606 tsi->tsi_jobid = NULL;
2609 case OBD_IOC_CREATE: /* may create echo object */
2610 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2611 GOTO (out, rc = -EPERM);
2613 rc = echo_create_object(env, ed, oa);
2616 #ifdef HAVE_SERVER_SUPPORT
2617 case OBD_IOC_ECHO_MD: {
2624 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2625 GOTO(out, rc = -EPERM);
2627 count = data->ioc_count;
2628 cmd = data->ioc_command;
2630 id = data->ioc_obdo2.o_oi.oi.oi_id;
2631 dirlen = data->ioc_plen1;
2632 OBD_ALLOC(dir, dirlen + 1);
2634 GOTO(out, rc = -ENOMEM);
2636 if (copy_from_user(dir, data->ioc_pbuf1, dirlen)) {
2637 OBD_FREE(dir, data->ioc_plen1 + 1);
2638 GOTO(out, rc = -EFAULT);
2641 rc = echo_md_handler(ed, cmd, dir, dirlen, id, count, data);
2642 OBD_FREE(dir, dirlen + 1);
2645 case OBD_IOC_ECHO_ALLOC_SEQ: {
2646 struct lu_env *cl_env;
2651 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2652 GOTO(out, rc = -EPERM);
2654 cl_env = cl_env_get(&refcheck);
2656 GOTO(out, rc = PTR_ERR(cl_env));
2658 rc = lu_env_refill_by_tags(cl_env, ECHO_MD_CTX_TAG,
2661 cl_env_put(cl_env, &refcheck);
2665 rc = seq_client_get_seq(cl_env, ed->ed_cl_seq, &seq);
2666 cl_env_put(cl_env, &refcheck);
2668 CERROR("%s: Can not alloc seq: rc = %d\n",
2673 if (copy_to_user(data->ioc_pbuf1, &seq, data->ioc_plen1))
2676 max_count = LUSTRE_METADATA_SEQ_MAX_WIDTH;
2677 if (copy_to_user(data->ioc_pbuf2, &max_count,
2682 #endif /* HAVE_SERVER_SUPPORT */
2683 case OBD_IOC_DESTROY:
2684 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2685 GOTO (out, rc = -EPERM);
2687 rc = echo_get_object(&eco, ed, oa);
2689 rc = obd_destroy(env, ec->ec_exp, oa);
2691 eco->eo_deleted = 1;
2692 echo_put_object(eco);
2696 case OBD_IOC_GETATTR:
2697 rc = echo_get_object(&eco, ed, oa);
2699 rc = obd_getattr(env, ec->ec_exp, oa);
2700 echo_put_object(eco);
2704 case OBD_IOC_SETATTR:
2705 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2706 GOTO (out, rc = -EPERM);
2708 rc = echo_get_object(&eco, ed, oa);
2710 rc = obd_setattr(env, ec->ec_exp, oa);
2711 echo_put_object(eco);
2715 case OBD_IOC_BRW_WRITE:
2716 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2717 GOTO (out, rc = -EPERM);
2721 case OBD_IOC_BRW_READ:
2722 rc = echo_client_brw_ioctl(env, rw, exp, data);
2726 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd);
2727 GOTO (out, rc = -ENOTTY);
2732 #ifdef HAVE_SERVER_SUPPORT
2733 lu_context_exit(env->le_ses);
2734 lu_context_fini(env->le_ses);
2744 static int echo_client_setup(const struct lu_env *env,
2745 struct obd_device *obddev, struct lustre_cfg *lcfg)
2747 struct echo_client_obd *ec = &obddev->u.echo_client;
2748 struct obd_device *tgt;
2749 struct obd_uuid echo_uuid = { "ECHO_UUID" };
2750 struct obd_connect_data *ocd = NULL;
2754 if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2755 CERROR("requires a TARGET OBD name\n");
2759 tgt = class_name2obd(lustre_cfg_string(lcfg, 1));
2760 if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) {
2761 CERROR("device not attached or not set up (%s)\n",
2762 lustre_cfg_string(lcfg, 1));
2766 spin_lock_init(&ec->ec_lock);
2767 INIT_LIST_HEAD(&ec->ec_objects);
2768 INIT_LIST_HEAD(&ec->ec_locks);
2771 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
2772 #ifdef HAVE_SERVER_SUPPORT
2773 lu_context_tags_update(ECHO_MD_CTX_TAG);
2774 lu_session_tags_update(ECHO_MD_SES_TAG);
2776 CERROR("Local operations are NOT supported on client side. "
2777 "Only remote operations are supported. Metadata client "
2778 "must be run on server side.\n");
2783 OBD_ALLOC(ocd, sizeof(*ocd));
2785 CERROR("Can't alloc ocd connecting to %s\n",
2786 lustre_cfg_string(lcfg, 1));
2790 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
2791 OBD_CONNECT_BRW_SIZE |
2792 OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
2793 OBD_CONNECT_64BITHASH | OBD_CONNECT_LVB_TYPE |
2795 ocd->ocd_brw_size = DT_MAX_BRW_SIZE;
2796 ocd->ocd_version = LUSTRE_VERSION_CODE;
2797 ocd->ocd_group = FID_SEQ_ECHO;
2799 rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
2801 /* Turn off pinger because it connects to tgt obd directly. */
2802 spin_lock(&tgt->obd_dev_lock);
2803 list_del_init(&ec->ec_exp->exp_obd_chain_timed);
2804 spin_unlock(&tgt->obd_dev_lock);
2807 OBD_FREE(ocd, sizeof(*ocd));
2810 CERROR("fail to connect to device %s\n",
2811 lustre_cfg_string(lcfg, 1));
2818 static int echo_client_cleanup(struct obd_device *obddev)
2820 struct echo_device *ed = obd2echo_dev(obddev);
2821 struct echo_client_obd *ec = &obddev->u.echo_client;
2825 /*Do nothing for Metadata echo client*/
2829 if (ed->ed_next_ismd) {
2830 #ifdef HAVE_SERVER_SUPPORT
2831 lu_context_tags_clear(ECHO_MD_CTX_TAG);
2832 lu_session_tags_clear(ECHO_MD_SES_TAG);
2834 CERROR("This is client-side only module, does not support "
2835 "metadata echo client.\n");
2840 if (!list_empty(&obddev->obd_exports)) {
2841 CERROR("still has clients!\n");
2845 LASSERT(atomic_read(&ec->ec_exp->exp_refcount) > 0);
2846 rc = obd_disconnect(ec->ec_exp);
2848 CERROR("fail to disconnect device: %d\n", rc);
2853 static int echo_client_connect(const struct lu_env *env,
2854 struct obd_export **exp,
2855 struct obd_device *src, struct obd_uuid *cluuid,
2856 struct obd_connect_data *data, void *localdata)
2859 struct lustre_handle conn = { 0 };
2862 rc = class_connect(&conn, src, cluuid);
2864 *exp = class_conn2export(&conn);
2870 static int echo_client_disconnect(struct obd_export *exp)
2876 GOTO(out, rc = -EINVAL);
2878 rc = class_disconnect(exp);
2884 static struct obd_ops echo_client_obd_ops = {
2885 .o_owner = THIS_MODULE,
2886 .o_iocontrol = echo_client_iocontrol,
2887 .o_connect = echo_client_connect,
2888 .o_disconnect = echo_client_disconnect
2891 static int echo_client_init(void)
2895 rc = lu_kmem_init(echo_caches);
2897 rc = class_register_type(&echo_client_obd_ops, NULL, true, NULL,
2898 LUSTRE_ECHO_CLIENT_NAME,
2901 lu_kmem_fini(echo_caches);
2906 static void echo_client_exit(void)
2908 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
2909 lu_kmem_fini(echo_caches);
2912 static int __init obdecho_init(void)
2917 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
2919 LASSERT(PAGE_CACHE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
2921 # ifdef HAVE_SERVER_SUPPORT
2922 rc = echo_persistent_pages_init();
2926 rc = class_register_type(&echo_obd_ops, NULL, true, NULL,
2927 LUSTRE_ECHO_NAME, NULL);
2932 rc = echo_client_init();
2934 # ifdef HAVE_SERVER_SUPPORT
2938 class_unregister_type(LUSTRE_ECHO_NAME);
2940 echo_persistent_pages_fini();
2946 static void /*__exit*/ obdecho_exit(void)
2950 # ifdef HAVE_SERVER_SUPPORT
2951 class_unregister_type(LUSTRE_ECHO_NAME);
2952 echo_persistent_pages_fini();
2956 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2957 MODULE_DESCRIPTION("Lustre Testing Echo OBD driver");
2958 MODULE_VERSION(LUSTRE_VERSION_STRING);
2959 MODULE_LICENSE("GPL");
2961 module_init(obdecho_init);
2962 module_exit(obdecho_exit);
2964 /** @} echo_client */