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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_ECHO
35 #include <linux/user_namespace.h>
36 #ifdef HAVE_UIDGID_HEADER
37 # include <linux/uidgid.h>
39 #include <libcfs/libcfs.h>
42 #include <obd_support.h>
43 #include <obd_class.h>
44 #include <lustre_debug.h>
45 #include <lprocfs_status.h>
46 #include <cl_object.h>
47 #include <lustre_fid.h>
48 #include <lustre_lmv.h>
49 #include <lustre_acl.h>
50 #include <uapi/linux/lustre/lustre_ioctl.h>
51 #include <lustre_net.h>
52 #ifdef HAVE_SERVER_SUPPORT
53 # include <md_object.h>
55 #define ETI_NAME_LEN 20
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 */
233 void *eti_big_lmm; /* may be vmalloc'd */
235 char eti_name[ETI_NAME_LEN];
236 struct lu_buf eti_buf;
237 /* If we want to test large ACL, then need to enlarge the buffer. */
238 char eti_xattr_buf[LUSTRE_POSIX_ACL_MAX_SIZE_OLD];
242 /* No session used right now */
243 struct echo_session_info {
247 static struct kmem_cache *echo_lock_kmem;
248 static struct kmem_cache *echo_object_kmem;
249 static struct kmem_cache *echo_thread_kmem;
250 static struct kmem_cache *echo_session_kmem;
251 /* static struct kmem_cache *echo_req_kmem; */
253 static struct lu_kmem_descr echo_caches[] = {
255 .ckd_cache = &echo_lock_kmem,
256 .ckd_name = "echo_lock_kmem",
257 .ckd_size = sizeof (struct echo_lock)
260 .ckd_cache = &echo_object_kmem,
261 .ckd_name = "echo_object_kmem",
262 .ckd_size = sizeof (struct echo_object)
265 .ckd_cache = &echo_thread_kmem,
266 .ckd_name = "echo_thread_kmem",
267 .ckd_size = sizeof (struct echo_thread_info)
270 .ckd_cache = &echo_session_kmem,
271 .ckd_name = "echo_session_kmem",
272 .ckd_size = sizeof (struct echo_session_info)
279 /** \defgroup echo_page Page operations
281 * Echo page operations.
285 static int echo_page_own(const struct lu_env *env,
286 const struct cl_page_slice *slice,
287 struct cl_io *io, int nonblock)
289 struct echo_page *ep = cl2echo_page(slice);
292 mutex_lock(&ep->ep_lock);
293 else if (!mutex_trylock(&ep->ep_lock))
298 static void echo_page_disown(const struct lu_env *env,
299 const struct cl_page_slice *slice,
302 struct echo_page *ep = cl2echo_page(slice);
304 LASSERT(mutex_is_locked(&ep->ep_lock));
305 mutex_unlock(&ep->ep_lock);
308 static void echo_page_discard(const struct lu_env *env,
309 const struct cl_page_slice *slice,
310 struct cl_io *unused)
312 cl_page_delete(env, slice->cpl_page);
315 static int echo_page_is_vmlocked(const struct lu_env *env,
316 const struct cl_page_slice *slice)
318 if (mutex_is_locked(&cl2echo_page(slice)->ep_lock))
323 static void echo_page_completion(const struct lu_env *env,
324 const struct cl_page_slice *slice,
327 LASSERT(slice->cpl_page->cp_sync_io != NULL);
330 static void echo_page_fini(const struct lu_env *env,
331 struct cl_page_slice *slice)
333 struct echo_object *eco = cl2echo_obj(slice->cpl_obj);
336 atomic_dec(&eco->eo_npages);
337 put_page(slice->cpl_page->cp_vmpage);
341 static int echo_page_prep(const struct lu_env *env,
342 const struct cl_page_slice *slice,
343 struct cl_io *unused)
348 static int echo_page_print(const struct lu_env *env,
349 const struct cl_page_slice *slice,
350 void *cookie, lu_printer_t printer)
352 struct echo_page *ep = cl2echo_page(slice);
354 (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n",
355 ep, mutex_is_locked(&ep->ep_lock),
356 slice->cpl_page->cp_vmpage);
360 static const struct cl_page_operations echo_page_ops = {
361 .cpo_own = echo_page_own,
362 .cpo_disown = echo_page_disown,
363 .cpo_discard = echo_page_discard,
364 .cpo_fini = echo_page_fini,
365 .cpo_print = echo_page_print,
366 .cpo_is_vmlocked = echo_page_is_vmlocked,
369 .cpo_prep = echo_page_prep,
370 .cpo_completion = echo_page_completion,
373 .cpo_prep = echo_page_prep,
374 .cpo_completion = echo_page_completion,
380 /** \defgroup echo_lock Locking
382 * echo lock operations
386 static void echo_lock_fini(const struct lu_env *env,
387 struct cl_lock_slice *slice)
389 struct echo_lock *ecl = cl2echo_lock(slice);
391 LASSERT(list_empty(&ecl->el_chain));
392 OBD_SLAB_FREE_PTR(ecl, echo_lock_kmem);
395 static struct cl_lock_operations echo_lock_ops = {
396 .clo_fini = echo_lock_fini,
401 /** \defgroup echo_cl_ops cl_object operations
403 * operations for cl_object
407 static int echo_page_init(const struct lu_env *env, struct cl_object *obj,
408 struct cl_page *page, pgoff_t index)
410 struct echo_page *ep = cl_object_page_slice(obj, page);
411 struct echo_object *eco = cl2echo_obj(obj);
414 get_page(page->cp_vmpage);
415 mutex_init(&ep->ep_lock);
416 cl_page_slice_add(page, &ep->ep_cl, obj, index, &echo_page_ops);
417 atomic_inc(&eco->eo_npages);
421 static int echo_io_init(const struct lu_env *env, struct cl_object *obj,
427 static int echo_lock_init(const struct lu_env *env,
428 struct cl_object *obj, struct cl_lock *lock,
429 const struct cl_io *unused)
431 struct echo_lock *el;
434 OBD_SLAB_ALLOC_PTR_GFP(el, echo_lock_kmem, GFP_NOFS);
436 cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops);
437 el->el_object = cl2echo_obj(obj);
438 INIT_LIST_HEAD(&el->el_chain);
439 atomic_set(&el->el_refcount, 0);
441 RETURN(el == NULL ? -ENOMEM : 0);
444 static int echo_conf_set(const struct lu_env *env, struct cl_object *obj,
445 const struct cl_object_conf *conf)
450 static const struct cl_object_operations echo_cl_obj_ops = {
451 .coo_page_init = echo_page_init,
452 .coo_lock_init = echo_lock_init,
453 .coo_io_init = echo_io_init,
454 .coo_conf_set = echo_conf_set
456 /** @} echo_cl_ops */
458 /** \defgroup echo_lu_ops lu_object operations
460 * operations for echo lu object.
464 static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
465 const struct lu_object_conf *conf)
467 struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev));
468 struct echo_client_obd *ec = ed->ed_ec;
469 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
473 struct lu_object *below;
474 struct lu_device *under;
477 below = under->ld_ops->ldo_object_alloc(env, obj->lo_header,
481 lu_object_add(obj, below);
484 if (!ed->ed_next_ismd) {
485 const struct cl_object_conf *cconf = lu2cl_conf(conf);
486 struct echo_object_conf *econf = cl2echo_conf(cconf);
488 LASSERT(econf->eoc_oinfo != NULL);
490 /* Transfer the oinfo pointer to eco that it won't be
492 eco->eo_oinfo = *econf->eoc_oinfo;
493 *econf->eoc_oinfo = NULL;
495 eco->eo_oinfo = NULL;
499 atomic_set(&eco->eo_npages, 0);
500 cl_object_page_init(lu2cl(obj), sizeof(struct echo_page));
502 spin_lock(&ec->ec_lock);
503 list_add_tail(&eco->eo_obj_chain, &ec->ec_objects);
504 spin_unlock(&ec->ec_lock);
509 static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
511 struct echo_object *eco = cl2echo_obj(lu2cl(obj));
512 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
515 LASSERT(atomic_read(&eco->eo_npages) == 0);
517 spin_lock(&ec->ec_lock);
518 list_del_init(&eco->eo_obj_chain);
519 spin_unlock(&ec->ec_lock);
522 lu_object_header_fini(obj->lo_header);
524 if (eco->eo_oinfo != NULL)
525 OBD_FREE_PTR(eco->eo_oinfo);
527 OBD_SLAB_FREE_PTR(eco, echo_object_kmem);
531 static int echo_object_print(const struct lu_env *env, void *cookie,
532 lu_printer_t p, const struct lu_object *o)
534 struct echo_object *obj = cl2echo_obj(lu2cl(o));
536 return (*p)(env, cookie, "echoclient-object@%p", obj);
539 static const struct lu_object_operations echo_lu_obj_ops = {
540 .loo_object_init = echo_object_init,
541 .loo_object_delete = NULL,
542 .loo_object_release = NULL,
543 .loo_object_free = echo_object_free,
544 .loo_object_print = echo_object_print,
545 .loo_object_invariant = NULL
547 /** @} echo_lu_ops */
549 /** \defgroup echo_lu_dev_ops lu_device operations
551 * Operations for echo lu device.
555 static struct lu_object *echo_object_alloc(const struct lu_env *env,
556 const struct lu_object_header *hdr,
557 struct lu_device *dev)
559 struct echo_object *eco;
560 struct lu_object *obj = NULL;
563 /* we're the top dev. */
564 LASSERT(hdr == NULL);
565 OBD_SLAB_ALLOC_PTR_GFP(eco, echo_object_kmem, GFP_NOFS);
567 struct cl_object_header *hdr = &eco->eo_hdr;
569 obj = &echo_obj2cl(eco)->co_lu;
570 cl_object_header_init(hdr);
571 hdr->coh_page_bufsize = cfs_size_round(sizeof(struct cl_page));
573 lu_object_init(obj, &hdr->coh_lu, dev);
574 lu_object_add_top(&hdr->coh_lu, obj);
576 eco->eo_cl.co_ops = &echo_cl_obj_ops;
577 obj->lo_ops = &echo_lu_obj_ops;
582 static struct lu_device_operations echo_device_lu_ops = {
583 .ldo_object_alloc = echo_object_alloc,
586 /** @} echo_lu_dev_ops */
588 /** \defgroup echo_init Setup and teardown
590 * Init and fini functions for echo client.
594 static int echo_site_init(const struct lu_env *env, struct echo_device *ed)
596 struct cl_site *site = &ed->ed_site_myself;
599 /* initialize site */
600 rc = cl_site_init(site, &ed->ed_cl);
602 CERROR("Cannot initialize site for echo client(%d)\n", rc);
606 rc = lu_site_init_finish(&site->cs_lu);
612 ed->ed_site = &site->cs_lu;
616 static void echo_site_fini(const struct lu_env *env, struct echo_device *ed)
619 if (!ed->ed_next_ismd)
620 lu_site_fini(ed->ed_site);
625 static void *echo_thread_key_init(const struct lu_context *ctx,
626 struct lu_context_key *key)
628 struct echo_thread_info *info;
630 OBD_SLAB_ALLOC_PTR_GFP(info, echo_thread_kmem, GFP_NOFS);
632 info = ERR_PTR(-ENOMEM);
636 static void echo_thread_key_fini(const struct lu_context *ctx,
637 struct lu_context_key *key, void *data)
639 struct echo_thread_info *info = data;
640 OBD_SLAB_FREE_PTR(info, echo_thread_kmem);
643 static struct lu_context_key echo_thread_key = {
644 .lct_tags = LCT_CL_THREAD,
645 .lct_init = echo_thread_key_init,
646 .lct_fini = echo_thread_key_fini,
649 static void *echo_session_key_init(const struct lu_context *ctx,
650 struct lu_context_key *key)
652 struct echo_session_info *session;
654 OBD_SLAB_ALLOC_PTR_GFP(session, echo_session_kmem, GFP_NOFS);
656 session = ERR_PTR(-ENOMEM);
660 static void echo_session_key_fini(const struct lu_context *ctx,
661 struct lu_context_key *key, void *data)
663 struct echo_session_info *session = data;
664 OBD_SLAB_FREE_PTR(session, echo_session_kmem);
667 static struct lu_context_key echo_session_key = {
668 .lct_tags = LCT_SESSION,
669 .lct_init = echo_session_key_init,
670 .lct_fini = echo_session_key_fini,
673 LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key);
675 #ifdef HAVE_SERVER_SUPPORT
676 # define ECHO_SEQ_WIDTH 0xffffffff
677 static int echo_fid_init(struct echo_device *ed, char *obd_name,
678 struct seq_server_site *ss)
684 OBD_ALLOC_PTR(ed->ed_cl_seq);
685 if (ed->ed_cl_seq == NULL)
688 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
690 GOTO(out_free_seq, rc = -ENOMEM);
692 snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s", obd_name);
694 /* Init client side sequence-manager */
695 rc = seq_client_init(ed->ed_cl_seq, NULL,
697 prefix, ss->ss_server_seq);
698 ed->ed_cl_seq->lcs_width = ECHO_SEQ_WIDTH;
699 OBD_FREE(prefix, MAX_OBD_NAME + 5);
701 GOTO(out_free_seq, rc);
706 OBD_FREE_PTR(ed->ed_cl_seq);
707 ed->ed_cl_seq = NULL;
711 static int echo_fid_fini(struct obd_device *obddev)
713 struct echo_device *ed = obd2echo_dev(obddev);
716 if (ed->ed_cl_seq != NULL) {
717 seq_client_fini(ed->ed_cl_seq);
718 OBD_FREE_PTR(ed->ed_cl_seq);
719 ed->ed_cl_seq = NULL;
725 static void echo_ed_los_fini(const struct lu_env *env, struct echo_device *ed)
729 if (ed != NULL && ed->ed_next_ismd && ed->ed_los != NULL) {
730 local_oid_storage_fini(env, ed->ed_los);
736 echo_md_local_file_create(const struct lu_env *env, struct echo_md_device *emd,
737 struct local_oid_storage *los,
738 const struct lu_fid *pfid, const char *name,
739 __u32 mode, struct lu_fid *fid)
741 struct dt_object *parent = NULL;
742 struct dt_object *dto = NULL;
746 LASSERT(!fid_is_zero(pfid));
747 parent = dt_locate(env, emd->emd_bottom, pfid);
748 if (unlikely(IS_ERR(parent)))
749 RETURN(PTR_ERR(parent));
751 /* create local file with @fid */
752 dto = local_file_find_or_create_with_fid(env, emd->emd_bottom, fid,
755 GOTO(out_put, rc = PTR_ERR(dto));
757 *fid = *lu_object_fid(&dto->do_lu);
758 /* since stack is not fully set up the local_storage uses own stack
759 * and we should drop its object from cache */
760 dt_object_put_nocache(env, dto);
764 dt_object_put(env, parent);
769 echo_md_root_get(const struct lu_env *env, struct echo_md_device *emd,
770 struct echo_device *ed)
776 /* Setup local dirs */
777 fid.f_seq = FID_SEQ_LOCAL_NAME;
780 rc = local_oid_storage_init(env, emd->emd_bottom, &fid, &ed->ed_los);
784 lu_echo_root_fid(&fid);
785 if (echo_md_seq_site(emd)->ss_node_id == 0) {
786 rc = echo_md_local_file_create(env, emd, ed->ed_los,
787 &emd->emd_local_root_fid,
788 echo_md_root_dir_name, S_IFDIR |
789 S_IRUGO | S_IWUSR | S_IXUGO,
792 CERROR("%s: create md echo root fid failed: rc = %d\n",
793 emd2obd_dev(emd)->obd_name, rc);
797 ed->ed_root_fid = fid;
801 echo_ed_los_fini(env, ed);
805 #endif /* HAVE_SERVER_SUPPORT */
807 static struct lu_device *echo_device_alloc(const struct lu_env *env,
808 struct lu_device_type *t,
809 struct lustre_cfg *cfg)
811 struct lu_device *next;
812 struct echo_device *ed;
813 struct cl_device *cd;
814 struct obd_device *obd = NULL; /* to keep compiler happy */
815 struct obd_device *tgt;
816 const char *tgt_type_name;
823 GOTO(out, rc = -ENOMEM);
827 rc = cl_device_init(cd, t);
831 cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
834 obd = class_name2obd(lustre_cfg_string(cfg, 0));
835 LASSERT(obd != NULL);
836 LASSERT(env != NULL);
838 tgt = class_name2obd(lustre_cfg_string(cfg, 1));
840 CERROR("Can not find tgt device %s\n",
841 lustre_cfg_string(cfg, 1));
842 GOTO(out, rc = -ENODEV);
845 next = tgt->obd_lu_dev;
847 if (strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME) == 0) {
848 ed->ed_next_ismd = 1;
849 } else if (strcmp(tgt->obd_type->typ_name, LUSTRE_OST_NAME) == 0 ||
850 strcmp(tgt->obd_type->typ_name, LUSTRE_OSC_NAME) == 0) {
851 ed->ed_next_ismd = 0;
852 rc = echo_site_init(env, ed);
856 GOTO(out, rc = -EINVAL);
861 rc = echo_client_setup(env, obd, cfg);
865 ed->ed_ec = &obd->u.echo_client;
868 if (ed->ed_next_ismd) {
869 #ifdef HAVE_SERVER_SUPPORT
870 /* Suppose to connect to some Metadata layer */
871 struct lu_site *ls = NULL;
872 struct lu_device *ld = NULL;
873 struct md_device *md = NULL;
874 struct echo_md_device *emd = NULL;
878 CERROR("%s is not lu device type!\n",
879 lustre_cfg_string(cfg, 1));
880 GOTO(out, rc = -EINVAL);
883 tgt_type_name = lustre_cfg_string(cfg, 2);
884 if (!tgt_type_name) {
885 CERROR("%s no type name for echo %s setup\n",
886 lustre_cfg_string(cfg, 1),
887 tgt->obd_type->typ_name);
888 GOTO(out, rc = -EINVAL);
893 spin_lock(&ls->ls_ld_lock);
894 list_for_each_entry(ld, &ls->ls_ld_linkage, ld_linkage) {
895 if (strcmp(ld->ld_type->ldt_name, tgt_type_name) == 0) {
900 spin_unlock(&ls->ls_ld_lock);
903 CERROR("%s is not lu device type!\n",
904 lustre_cfg_string(cfg, 1));
905 GOTO(out, rc = -EINVAL);
909 /* For MD echo client, it will use the site in MDS stack */
911 ed->ed_cl.cd_lu_dev.ld_site = ls;
912 rc = echo_fid_init(ed, obd->obd_name, lu_site2seq(ls));
914 CERROR("echo fid init error %d\n", rc);
918 md = lu2md_dev(next);
919 emd = lu2emd_dev(&md->md_lu_dev);
920 rc = echo_md_root_get(env, emd, ed);
922 CERROR("%s: get root error: rc = %d\n",
923 emd2obd_dev(emd)->obd_name, rc);
926 #else /* !HAVE_SERVER_SUPPORT */
927 CERROR("Local operations are NOT supported on client side. "
928 "Only remote operations are supported. Metadata client "
929 "must be run on server side.\n");
930 GOTO(out, rc = -EOPNOTSUPP);
931 #endif /* HAVE_SERVER_SUPPORT */
933 /* if echo client is to be stacked upon ost device, the next is
934 * NULL since ost is not a clio device so far */
935 if (next != NULL && !lu_device_is_cl(next))
938 tgt_type_name = tgt->obd_type->typ_name;
940 LASSERT(next != NULL);
941 if (next->ld_site != NULL)
942 GOTO(out, rc = -EBUSY);
944 next->ld_site = ed->ed_site;
945 rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
946 next->ld_type->ldt_name,
951 LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0);
955 RETURN(&cd->cd_lu_dev);
960 rc2 = echo_client_cleanup(obd);
962 CERROR("Cleanup obd device %s error(%d)\n",
967 echo_site_fini(env, ed);
969 cl_device_fini(&ed->ed_cl);
979 static int echo_device_init(const struct lu_env *env, struct lu_device *d,
980 const char *name, struct lu_device *next)
986 static struct lu_device *echo_device_fini(const struct lu_env *env,
989 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
990 struct lu_device *next = ed->ed_next;
992 while (next && !ed->ed_next_ismd)
993 next = next->ld_type->ldt_ops->ldto_device_fini(env, next);
997 static void echo_lock_release(const struct lu_env *env,
998 struct echo_lock *ecl,
1001 struct cl_lock *clk = echo_lock2cl(ecl);
1003 cl_lock_release(env, clk);
1006 static struct lu_device *echo_device_free(const struct lu_env *env,
1007 struct lu_device *d)
1009 struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
1010 struct echo_client_obd *ec = ed->ed_ec;
1011 struct echo_object *eco;
1012 struct lu_device *next = ed->ed_next;
1014 CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n",
1017 lu_site_purge(env, ed->ed_site, -1);
1019 /* check if there are objects still alive.
1020 * It shouldn't have any object because lu_site_purge would cleanup
1021 * all of cached objects. Anyway, probably the echo device is being
1022 * parallelly accessed.
1024 spin_lock(&ec->ec_lock);
1025 list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain)
1026 eco->eo_deleted = 1;
1027 spin_unlock(&ec->ec_lock);
1030 lu_site_purge(env, ed->ed_site, -1);
1033 "Waiting for the reference of echo object to be dropped\n");
1035 /* Wait for the last reference to be dropped. */
1036 spin_lock(&ec->ec_lock);
1037 while (!list_empty(&ec->ec_objects)) {
1038 spin_unlock(&ec->ec_lock);
1039 CERROR("echo_client still has objects at cleanup time, "
1040 "wait for 1 second\n");
1041 set_current_state(TASK_UNINTERRUPTIBLE);
1042 schedule_timeout(cfs_time_seconds(1));
1043 lu_site_purge(env, ed->ed_site, -1);
1044 spin_lock(&ec->ec_lock);
1046 spin_unlock(&ec->ec_lock);
1048 LASSERT(list_empty(&ec->ec_locks));
1050 CDEBUG(D_INFO, "No object exists, exiting...\n");
1052 echo_client_cleanup(d->ld_obd);
1053 #ifdef HAVE_SERVER_SUPPORT
1054 echo_fid_fini(d->ld_obd);
1055 echo_ed_los_fini(env, ed);
1057 while (next && !ed->ed_next_ismd)
1058 next = next->ld_type->ldt_ops->ldto_device_free(env, next);
1060 LASSERT(ed->ed_site == d->ld_site);
1061 echo_site_fini(env, ed);
1062 cl_device_fini(&ed->ed_cl);
1065 cl_env_cache_purge(~0);
1070 static const struct lu_device_type_operations echo_device_type_ops = {
1071 .ldto_init = echo_type_init,
1072 .ldto_fini = echo_type_fini,
1074 .ldto_start = echo_type_start,
1075 .ldto_stop = echo_type_stop,
1077 .ldto_device_alloc = echo_device_alloc,
1078 .ldto_device_free = echo_device_free,
1079 .ldto_device_init = echo_device_init,
1080 .ldto_device_fini = echo_device_fini
1083 static struct lu_device_type echo_device_type = {
1084 .ldt_tags = LU_DEVICE_CL,
1085 .ldt_name = LUSTRE_ECHO_CLIENT_NAME,
1086 .ldt_ops = &echo_device_type_ops,
1087 .ldt_ctx_tags = LCT_CL_THREAD | LCT_MD_THREAD | LCT_DT_THREAD,
1091 /** \defgroup echo_exports Exported operations
1093 * exporting functions to echo client
1098 /* Interfaces to echo client obd device */
1099 static struct echo_object *
1100 cl_echo_object_find(struct echo_device *d, const struct ost_id *oi)
1103 struct echo_thread_info *info;
1104 struct echo_object_conf *conf;
1105 struct echo_object *eco;
1106 struct cl_object *obj;
1107 struct lov_oinfo *oinfo = NULL;
1113 LASSERTF(ostid_id(oi) != 0, DOSTID"\n", POSTID(oi));
1114 LASSERTF(ostid_seq(oi) == FID_SEQ_ECHO, DOSTID"\n", POSTID(oi));
1116 /* Never return an object if the obd is to be freed. */
1117 if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
1118 RETURN(ERR_PTR(-ENODEV));
1120 env = cl_env_get(&refcheck);
1122 RETURN((void *)env);
1124 info = echo_env_info(env);
1125 conf = &info->eti_conf;
1127 OBD_ALLOC_PTR(oinfo);
1129 GOTO(out, eco = ERR_PTR(-ENOMEM));
1131 oinfo->loi_oi = *oi;
1132 conf->eoc_cl.u.coc_oinfo = oinfo;
1135 /* If echo_object_init() is successful then ownership of oinfo
1136 * is transferred to the object. */
1137 conf->eoc_oinfo = &oinfo;
1139 fid = &info->eti_fid;
1140 rc = ostid_to_fid(fid, oi, 0);
1142 GOTO(out, eco = ERR_PTR(rc));
1144 /* In the function below, .hs_keycmp resolves to
1145 * lu_obj_hop_keycmp() */
1146 /* coverity[overrun-buffer-val] */
1147 obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl);
1149 GOTO(out, eco = (void*)obj);
1151 eco = cl2echo_obj(obj);
1152 if (eco->eo_deleted) {
1153 cl_object_put(env, obj);
1154 eco = ERR_PTR(-EAGAIN);
1159 OBD_FREE_PTR(oinfo);
1161 cl_env_put(env, &refcheck);
1165 static int cl_echo_object_put(struct echo_object *eco)
1168 struct cl_object *obj = echo_obj2cl(eco);
1172 env = cl_env_get(&refcheck);
1174 RETURN(PTR_ERR(env));
1176 /* an external function to kill an object? */
1177 if (eco->eo_deleted) {
1178 struct lu_object_header *loh = obj->co_lu.lo_header;
1179 LASSERT(&eco->eo_hdr == luh2coh(loh));
1180 set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
1183 cl_object_put(env, obj);
1184 cl_env_put(env, &refcheck);
1188 static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco,
1189 u64 start, u64 end, int mode,
1190 __u64 *cookie , __u32 enqflags)
1193 struct cl_lock *lck;
1194 struct cl_object *obj;
1195 struct cl_lock_descr *descr;
1196 struct echo_thread_info *info;
1200 info = echo_env_info(env);
1202 lck = &info->eti_lock;
1203 obj = echo_obj2cl(eco);
1205 memset(lck, 0, sizeof(*lck));
1206 descr = &lck->cll_descr;
1207 descr->cld_obj = obj;
1208 descr->cld_start = cl_index(obj, start);
1209 descr->cld_end = cl_index(obj, end);
1210 descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ;
1211 descr->cld_enq_flags = enqflags;
1214 rc = cl_lock_request(env, io, lck);
1216 struct echo_client_obd *ec = eco->eo_dev->ed_ec;
1217 struct echo_lock *el;
1219 el = cl2echo_lock(cl_lock_at(lck, &echo_device_type));
1220 spin_lock(&ec->ec_lock);
1221 if (list_empty(&el->el_chain)) {
1222 list_add(&el->el_chain, &ec->ec_locks);
1223 el->el_cookie = ++ec->ec_unique;
1225 atomic_inc(&el->el_refcount);
1226 *cookie = el->el_cookie;
1227 spin_unlock(&ec->ec_lock);
1232 static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed,
1235 struct echo_client_obd *ec = ed->ed_ec;
1236 struct echo_lock *ecl = NULL;
1237 struct list_head *el;
1238 int found = 0, still_used = 0;
1241 LASSERT(ec != NULL);
1242 spin_lock(&ec->ec_lock);
1243 list_for_each(el, &ec->ec_locks) {
1244 ecl = list_entry(el, struct echo_lock, el_chain);
1245 CDEBUG(D_INFO, "ecl: %p, cookie: %#llx\n", ecl, ecl->el_cookie);
1246 found = (ecl->el_cookie == cookie);
1248 if (atomic_dec_and_test(&ecl->el_refcount))
1249 list_del_init(&ecl->el_chain);
1255 spin_unlock(&ec->ec_lock);
1260 echo_lock_release(env, ecl, still_used);
1264 static void echo_commit_callback(const struct lu_env *env, struct cl_io *io,
1265 struct cl_page *page)
1267 struct echo_thread_info *info;
1268 struct cl_2queue *queue;
1270 info = echo_env_info(env);
1271 LASSERT(io == &info->eti_io);
1273 queue = &info->eti_queue;
1274 cl_page_list_add(&queue->c2_qout, page);
1277 static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset,
1278 struct page **pages, int npages, int async)
1281 struct echo_thread_info *info;
1282 struct cl_object *obj = echo_obj2cl(eco);
1283 struct echo_device *ed = eco->eo_dev;
1284 struct cl_2queue *queue;
1286 struct cl_page *clp;
1287 struct lustre_handle lh = { 0 };
1288 int page_size = cl_page_size(obj);
1294 LASSERT((offset & ~PAGE_MASK) == 0);
1295 LASSERT(ed->ed_next != NULL);
1296 env = cl_env_get(&refcheck);
1298 RETURN(PTR_ERR(env));
1300 info = echo_env_info(env);
1302 queue = &info->eti_queue;
1304 cl_2queue_init(queue);
1306 io->ci_ignore_layout = 1;
1307 rc = cl_io_init(env, io, CIT_MISC, obj);
1313 rc = cl_echo_enqueue0(env, eco, offset,
1314 offset + npages * PAGE_SIZE - 1,
1315 rw == READ ? LCK_PR : LCK_PW, &lh.cookie,
1318 GOTO(error_lock, rc);
1320 for (i = 0; i < npages; i++) {
1322 clp = cl_page_find(env, obj, cl_index(obj, offset),
1323 pages[i], CPT_TRANSIENT);
1328 LASSERT(clp->cp_type == CPT_TRANSIENT);
1330 rc = cl_page_own(env, io, clp);
1332 LASSERT(clp->cp_state == CPS_FREEING);
1333 cl_page_put(env, clp);
1337 cl_2queue_add(queue, clp);
1339 /* drop the reference count for cl_page_find, so that the page
1340 * will be freed in cl_2queue_fini. */
1341 cl_page_put(env, clp);
1342 cl_page_clip(env, clp, 0, page_size);
1344 offset += page_size;
1348 enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE;
1350 async = async && (typ == CRT_WRITE);
1352 rc = cl_io_commit_async(env, io, &queue->c2_qin,
1354 echo_commit_callback);
1356 rc = cl_io_submit_sync(env, io, typ, queue, 0);
1357 CDEBUG(D_INFO, "echo_client %s write returns %d\n",
1358 async ? "async" : "sync", rc);
1361 cl_echo_cancel0(env, ed, lh.cookie);
1364 cl_2queue_discard(env, io, queue);
1365 cl_2queue_disown(env, io, queue);
1366 cl_2queue_fini(env, queue);
1367 cl_io_fini(env, io);
1369 cl_env_put(env, &refcheck);
1372 /** @} echo_exports */
1375 static u64 last_object_id;
1377 #ifdef HAVE_SERVER_SUPPORT
1378 static inline void echo_md_build_name(struct lu_name *lname, char *name,
1381 snprintf(name, ETI_NAME_LEN, "%llu", id);
1382 lname->ln_name = name;
1383 lname->ln_namelen = strlen(name);
1386 /* similar to mdt_attr_get_complex */
1387 static int echo_big_lmm_get(const struct lu_env *env, struct md_object *o,
1390 struct echo_thread_info *info = echo_env_info(env);
1395 LASSERT(ma->ma_lmm_size > 0);
1397 LASSERT(ma->ma_need & (MA_LOV | MA_LMV));
1398 if (ma->ma_need & MA_LOV)
1399 rc = mo_xattr_get(env, o, &LU_BUF_NULL, XATTR_NAME_LOV);
1401 rc = mo_xattr_get(env, o, &LU_BUF_NULL, XATTR_NAME_LMV);
1406 /* big_lmm may need to be grown */
1407 if (info->eti_big_lmmsize < rc) {
1408 int size = size_roundup_power2(rc);
1410 if (info->eti_big_lmmsize > 0) {
1411 /* free old buffer */
1412 LASSERT(info->eti_big_lmm);
1413 OBD_FREE_LARGE(info->eti_big_lmm,
1414 info->eti_big_lmmsize);
1415 info->eti_big_lmm = NULL;
1416 info->eti_big_lmmsize = 0;
1419 OBD_ALLOC_LARGE(info->eti_big_lmm, size);
1420 if (info->eti_big_lmm == NULL)
1422 info->eti_big_lmmsize = size;
1424 LASSERT(info->eti_big_lmmsize >= rc);
1426 info->eti_buf.lb_buf = info->eti_big_lmm;
1427 info->eti_buf.lb_len = info->eti_big_lmmsize;
1428 if (ma->ma_need & MA_LOV)
1429 rc = mo_xattr_get(env, o, &info->eti_buf, XATTR_NAME_LOV);
1431 rc = mo_xattr_get(env, o, &info->eti_buf, XATTR_NAME_LMV);
1435 if (ma->ma_need & MA_LOV)
1436 ma->ma_valid |= MA_LOV;
1438 ma->ma_valid |= MA_LMV;
1440 ma->ma_lmm = info->eti_big_lmm;
1441 ma->ma_lmm_size = rc;
1446 static int echo_attr_get_complex(const struct lu_env *env,
1447 struct md_object *next,
1450 struct echo_thread_info *info = echo_env_info(env);
1451 struct lu_buf *buf = &info->eti_buf;
1452 umode_t mode = lu_object_attr(&next->mo_lu);
1453 int need = ma->ma_need;
1460 if (need & MA_INODE) {
1461 ma->ma_need = MA_INODE;
1462 rc = mo_attr_get(env, next, ma);
1465 ma->ma_valid |= MA_INODE;
1468 if (need & MA_LOV) {
1469 if (S_ISREG(mode) || S_ISDIR(mode)) {
1470 LASSERT(ma->ma_lmm_size > 0);
1471 buf->lb_buf = ma->ma_lmm;
1472 buf->lb_len = ma->ma_lmm_size;
1473 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LOV);
1475 ma->ma_lmm_size = rc2;
1476 ma->ma_valid |= MA_LOV;
1477 } else if (rc2 == -ENODATA) {
1479 ma->ma_lmm_size = 0;
1480 } else if (rc2 == -ERANGE) {
1481 rc2 = echo_big_lmm_get(env, next, ma);
1483 GOTO(out, rc = rc2);
1485 GOTO(out, rc = rc2);
1490 if (need & MA_LMV && S_ISDIR(mode)) {
1491 LASSERT(ma->ma_lmm_size > 0);
1492 buf->lb_buf = ma->ma_lmm;
1493 buf->lb_len = ma->ma_lmm_size;
1494 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
1496 ma->ma_lmm_size = rc2;
1497 ma->ma_valid |= MA_LMV;
1498 } else if (rc2 == -ENODATA) {
1500 ma->ma_lmm_size = 0;
1501 } else if (rc2 == -ERANGE) {
1502 rc2 = echo_big_lmm_get(env, next, ma);
1504 GOTO(out, rc = rc2);
1506 GOTO(out, rc = rc2);
1510 #ifdef CONFIG_FS_POSIX_ACL
1511 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1512 buf->lb_buf = ma->ma_acl;
1513 buf->lb_len = ma->ma_acl_size;
1514 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1516 ma->ma_acl_size = rc2;
1517 ma->ma_valid |= MA_ACL_DEF;
1518 } else if (rc2 == -ENODATA) {
1520 ma->ma_acl_size = 0;
1522 GOTO(out, rc = rc2);
1528 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1529 rc, ma->ma_valid, ma->ma_lmm);
1534 echo_md_create_internal(const struct lu_env *env, struct echo_device *ed,
1535 struct md_object *parent, struct lu_fid *fid,
1536 struct lu_name *lname, struct md_op_spec *spec,
1539 struct lu_object *ec_child, *child;
1540 struct lu_device *ld = ed->ed_next;
1541 struct echo_thread_info *info = echo_env_info(env);
1542 struct lu_fid *fid2 = &info->eti_fid2;
1543 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
1548 rc = mdo_lookup(env, parent, lname, fid2, spec);
1551 else if (rc != -ENOENT)
1554 ec_child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev,
1556 if (IS_ERR(ec_child)) {
1557 CERROR("Can not find the child "DFID": rc = %ld\n", PFID(fid),
1559 RETURN(PTR_ERR(ec_child));
1562 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1563 if (child == NULL) {
1564 CERROR("Can not locate the child "DFID"\n", PFID(fid));
1565 GOTO(out_put, rc = -EINVAL);
1568 CDEBUG(D_RPCTRACE, "Start creating object "DFID" %s %p\n",
1569 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
1572 * Do not perform lookup sanity check. We know that name does not exist.
1574 spec->sp_cr_lookup = 0;
1575 rc = mdo_create(env, parent, lname, lu2md(child), spec, ma);
1577 CERROR("Can not create child "DFID": rc = %d\n", PFID(fid), rc);
1580 CDEBUG(D_RPCTRACE, "End creating object "DFID" %s %p rc = %d\n",
1581 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent, rc);
1584 lu_object_put(env, ec_child);
1588 static int echo_set_lmm_size(const struct lu_env *env, struct lu_device *ld,
1591 struct echo_thread_info *info = echo_env_info(env);
1593 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
1594 ma->ma_lmm = (void *)&info->eti_lmm;
1595 ma->ma_lmm_size = sizeof(info->eti_lmm);
1597 LASSERT(info->eti_big_lmmsize);
1598 ma->ma_lmm = info->eti_big_lmm;
1599 ma->ma_lmm_size = info->eti_big_lmmsize;
1606 echo_md_dir_stripe_choose(const struct lu_env *env, struct echo_device *ed,
1607 struct lu_object *obj, const char *name,
1608 unsigned int namelen, __u64 id,
1609 struct lu_object **new_parent)
1611 struct echo_thread_info *info = echo_env_info(env);
1612 struct md_attr *ma = &info->eti_ma;
1613 struct lmv_mds_md_v1 *lmv;
1614 struct lu_device *ld = ed->ed_next;
1616 struct lu_name tmp_ln_name;
1617 struct lu_fid stripe_fid;
1618 struct lu_object *stripe_obj;
1621 LASSERT(obj != NULL);
1622 LASSERT(S_ISDIR(obj->lo_header->loh_attr));
1624 memset(ma, 0, sizeof(*ma));
1625 echo_set_lmm_size(env, ld, ma);
1626 ma->ma_need = MA_LMV;
1627 rc = echo_attr_get_complex(env, lu2md(obj), ma);
1629 CERROR("Can not getattr child "DFID": rc = %d\n",
1630 PFID(lu_object_fid(obj)), rc);
1634 if (!(ma->ma_valid & MA_LMV)) {
1639 lmv = (struct lmv_mds_md_v1 *)ma->ma_lmm;
1640 if (le32_to_cpu(lmv->lmv_magic) != LMV_MAGIC_V1) {
1642 CERROR("Invalid mds md magic %x "DFID": rc = %d\n",
1643 le32_to_cpu(lmv->lmv_magic), PFID(lu_object_fid(obj)),
1649 tmp_ln_name.ln_name = name;
1650 tmp_ln_name.ln_namelen = namelen;
1653 echo_md_build_name(&tmp_ln_name, info->eti_name, id);
1656 idx = lmv_name_to_stripe_index(LMV_HASH_TYPE_FNV_1A_64,
1657 le32_to_cpu(lmv->lmv_stripe_count),
1658 tmp_ln_name.ln_name, tmp_ln_name.ln_namelen);
1660 LASSERT(idx < le32_to_cpu(lmv->lmv_stripe_count));
1661 fid_le_to_cpu(&stripe_fid, &lmv->lmv_stripe_fids[idx]);
1663 stripe_obj = lu_object_find_at(env, ld, &stripe_fid, NULL);
1664 if (IS_ERR(stripe_obj)) {
1665 rc = PTR_ERR(stripe_obj);
1666 CERROR("Can not find the parent "DFID": rc = %d\n",
1667 PFID(&stripe_fid), rc);
1671 *new_parent = lu_object_locate(stripe_obj->lo_header, ld->ld_type);
1672 if (*new_parent == NULL) {
1673 lu_object_put(env, stripe_obj);
1680 static int echo_create_md_object(const struct lu_env *env,
1681 struct echo_device *ed,
1682 struct lu_object *ec_parent,
1684 char *name, int namelen,
1685 __u64 id, __u32 mode, int count,
1686 int stripe_count, int stripe_offset)
1688 struct lu_object *parent;
1689 struct lu_object *new_parent;
1690 struct echo_thread_info *info = echo_env_info(env);
1691 struct lu_name *lname = &info->eti_lname;
1692 struct md_op_spec *spec = &info->eti_spec;
1693 struct md_attr *ma = &info->eti_ma;
1694 struct lu_device *ld = ed->ed_next;
1700 if (ec_parent == NULL)
1702 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1706 rc = echo_md_dir_stripe_choose(env, ed, parent, name, namelen,
1711 LASSERT(new_parent != NULL);
1712 memset(ma, 0, sizeof(*ma));
1713 memset(spec, 0, sizeof(*spec));
1714 echo_set_lmm_size(env, ld, ma);
1715 if (stripe_count != 0) {
1716 spec->sp_cr_flags |= FMODE_WRITE;
1717 if (stripe_count != -1) {
1718 if (S_ISDIR(mode)) {
1719 struct lmv_user_md *lmu;
1721 lmu = (struct lmv_user_md *)&info->eti_lum;
1722 lmu->lum_magic = LMV_USER_MAGIC;
1723 lmu->lum_stripe_offset = stripe_offset;
1724 lmu->lum_stripe_count = stripe_count;
1725 lmu->lum_hash_type = LMV_HASH_TYPE_FNV_1A_64;
1726 spec->u.sp_ea.eadata = lmu;
1727 spec->u.sp_ea.eadatalen = sizeof(*lmu);
1729 struct lov_user_md_v3 *lum = &info->eti_lum;
1731 lum->lmm_magic = LOV_USER_MAGIC_V3;
1732 lum->lmm_stripe_count = stripe_count;
1733 lum->lmm_stripe_offset = stripe_offset;
1734 lum->lmm_pattern = LOV_PATTERN_NONE;
1735 spec->u.sp_ea.eadata = lum;
1736 spec->u.sp_ea.eadatalen = sizeof(*lum);
1738 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1742 ma->ma_attr.la_mode = mode;
1743 ma->ma_attr.la_valid = LA_CTIME | LA_MODE;
1744 ma->ma_attr.la_ctime = ktime_get_real_seconds();
1747 lname->ln_name = name;
1748 lname->ln_namelen = namelen;
1749 /* If name is specified, only create one object by name */
1750 rc = echo_md_create_internal(env, ed, lu2md(new_parent), fid,
1755 /* Create multiple object sequenced by id */
1756 for (i = 0; i < count; i++) {
1757 char *tmp_name = info->eti_name;
1759 echo_md_build_name(lname, tmp_name, id);
1761 rc = echo_md_create_internal(env, ed, lu2md(new_parent),
1762 fid, lname, spec, ma);
1764 CERROR("Can not create child %s: rc = %d\n", tmp_name,
1773 if (new_parent != parent)
1774 lu_object_put(env, new_parent);
1779 static struct lu_object *echo_md_lookup(const struct lu_env *env,
1780 struct echo_device *ed,
1781 struct md_object *parent,
1782 struct lu_name *lname)
1784 struct echo_thread_info *info = echo_env_info(env);
1785 struct lu_fid *fid = &info->eti_fid;
1786 struct lu_object *child;
1790 CDEBUG(D_INFO, "lookup %s in parent "DFID" %p\n", lname->ln_name,
1793 rc = mdo_lookup(env, parent, lname, fid, NULL);
1795 CERROR("lookup %s: rc = %d\n", lname->ln_name, rc);
1796 RETURN(ERR_PTR(rc));
1799 /* In the function below, .hs_keycmp resolves to
1800 * lu_obj_hop_keycmp() */
1801 /* coverity[overrun-buffer-val] */
1802 child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1807 static int echo_setattr_object(const struct lu_env *env,
1808 struct echo_device *ed,
1809 struct lu_object *ec_parent,
1810 __u64 id, int count)
1812 struct lu_object *parent;
1813 struct lu_object *new_parent;
1814 struct echo_thread_info *info = echo_env_info(env);
1815 struct lu_name *lname = &info->eti_lname;
1816 char *name = info->eti_name;
1817 struct lu_device *ld = ed->ed_next;
1818 struct lu_buf *buf = &info->eti_buf;
1824 if (ec_parent == NULL)
1826 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1830 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1835 for (i = 0; i < count; i++) {
1836 struct lu_object *ec_child, *child;
1838 echo_md_build_name(lname, name, id);
1840 ec_child = echo_md_lookup(env, ed, lu2md(new_parent), lname);
1841 if (IS_ERR(ec_child)) {
1842 rc = PTR_ERR(ec_child);
1843 CERROR("Can't find child %s: rc = %d\n",
1844 lname->ln_name, rc);
1848 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1849 if (child == NULL) {
1850 CERROR("Can not locate the child %s\n", lname->ln_name);
1851 lu_object_put(env, ec_child);
1856 CDEBUG(D_RPCTRACE, "Start setattr object "DFID"\n",
1857 PFID(lu_object_fid(child)));
1859 buf->lb_buf = info->eti_xattr_buf;
1860 buf->lb_len = sizeof(info->eti_xattr_buf);
1862 sprintf(name, "%s.test1", XATTR_USER_PREFIX);
1863 rc = mo_xattr_set(env, lu2md(child), buf, name,
1866 CERROR("Can not setattr child "DFID": rc = %d\n",
1867 PFID(lu_object_fid(child)), rc);
1868 lu_object_put(env, ec_child);
1871 CDEBUG(D_RPCTRACE, "End setattr object "DFID"\n",
1872 PFID(lu_object_fid(child)));
1874 lu_object_put(env, ec_child);
1877 if (new_parent != parent)
1878 lu_object_put(env, new_parent);
1883 static int echo_getattr_object(const struct lu_env *env,
1884 struct echo_device *ed,
1885 struct lu_object *ec_parent,
1886 __u64 id, int count)
1888 struct lu_object *parent;
1889 struct lu_object *new_parent;
1890 struct echo_thread_info *info = echo_env_info(env);
1891 struct lu_name *lname = &info->eti_lname;
1892 char *name = info->eti_name;
1893 struct md_attr *ma = &info->eti_ma;
1894 struct lu_device *ld = ed->ed_next;
1900 if (ec_parent == NULL)
1902 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1906 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1911 memset(ma, 0, sizeof(*ma));
1912 ma->ma_need |= MA_INODE | MA_LOV | MA_PFID | MA_HSM | MA_ACL_DEF;
1913 ma->ma_acl = info->eti_xattr_buf;
1914 ma->ma_acl_size = sizeof(info->eti_xattr_buf);
1916 for (i = 0; i < count; i++) {
1917 struct lu_object *ec_child, *child;
1920 echo_md_build_name(lname, name, id);
1921 echo_set_lmm_size(env, ld, ma);
1923 ec_child = echo_md_lookup(env, ed, lu2md(new_parent), lname);
1924 if (IS_ERR(ec_child)) {
1925 CERROR("Can't find child %s: rc = %ld\n",
1926 lname->ln_name, PTR_ERR(ec_child));
1927 RETURN(PTR_ERR(ec_child));
1930 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1931 if (child == NULL) {
1932 CERROR("Can not locate the child %s\n", lname->ln_name);
1933 lu_object_put(env, ec_child);
1937 CDEBUG(D_RPCTRACE, "Start getattr object "DFID"\n",
1938 PFID(lu_object_fid(child)));
1939 rc = echo_attr_get_complex(env, lu2md(child), ma);
1941 CERROR("Can not getattr child "DFID": rc = %d\n",
1942 PFID(lu_object_fid(child)), rc);
1943 lu_object_put(env, ec_child);
1946 CDEBUG(D_RPCTRACE, "End getattr object "DFID"\n",
1947 PFID(lu_object_fid(child)));
1949 lu_object_put(env, ec_child);
1952 if (new_parent != parent)
1953 lu_object_put(env, new_parent);
1958 static int echo_lookup_object(const struct lu_env *env,
1959 struct echo_device *ed,
1960 struct lu_object *ec_parent,
1961 __u64 id, int count)
1963 struct lu_object *parent;
1964 struct lu_object *new_parent;
1965 struct echo_thread_info *info = echo_env_info(env);
1966 struct lu_name *lname = &info->eti_lname;
1967 char *name = info->eti_name;
1968 struct lu_fid *fid = &info->eti_fid;
1969 struct lu_device *ld = ed->ed_next;
1973 if (ec_parent == NULL)
1975 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1979 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1984 /*prepare the requests*/
1985 for (i = 0; i < count; i++) {
1986 echo_md_build_name(lname, name, id);
1988 CDEBUG(D_RPCTRACE, "Start lookup object "DFID" %s %p\n",
1989 PFID(lu_object_fid(new_parent)), lname->ln_name,
1992 rc = mdo_lookup(env, lu2md(new_parent), lname, fid, NULL);
1994 CERROR("Can not lookup child %s: rc = %d\n", name, rc);
1998 CDEBUG(D_RPCTRACE, "End lookup object "DFID" %s %p\n",
1999 PFID(lu_object_fid(new_parent)), lname->ln_name,
2005 if (new_parent != parent)
2006 lu_object_put(env, new_parent);
2011 static int echo_md_destroy_internal(const struct lu_env *env,
2012 struct echo_device *ed,
2013 struct md_object *parent,
2014 struct lu_name *lname,
2017 struct lu_device *ld = ed->ed_next;
2018 struct lu_object *ec_child;
2019 struct lu_object *child;
2024 ec_child = echo_md_lookup(env, ed, parent, lname);
2025 if (IS_ERR(ec_child)) {
2026 CERROR("Can't find child %s: rc = %ld\n", lname->ln_name,
2028 RETURN(PTR_ERR(ec_child));
2031 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
2032 if (child == NULL) {
2033 CERROR("Can not locate the child %s\n", lname->ln_name);
2034 GOTO(out_put, rc = -EINVAL);
2037 if (lu_object_remote(child)) {
2038 CERROR("Can not destroy remote object %s: rc = %d\n",
2039 lname->ln_name, -EPERM);
2040 GOTO(out_put, rc = -EPERM);
2042 CDEBUG(D_RPCTRACE, "Start destroy object "DFID" %s %p\n",
2043 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
2045 rc = mdo_unlink(env, parent, lu2md(child), lname, ma, 0);
2047 CERROR("Can not unlink child %s: rc = %d\n",
2048 lname->ln_name, rc);
2051 CDEBUG(D_RPCTRACE, "End destroy object "DFID" %s %p\n",
2052 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
2054 lu_object_put(env, ec_child);
2058 static int echo_destroy_object(const struct lu_env *env,
2059 struct echo_device *ed,
2060 struct lu_object *ec_parent,
2061 char *name, int namelen,
2062 __u64 id, __u32 mode,
2065 struct echo_thread_info *info = echo_env_info(env);
2066 struct lu_name *lname = &info->eti_lname;
2067 struct md_attr *ma = &info->eti_ma;
2068 struct lu_device *ld = ed->ed_next;
2069 struct lu_object *parent;
2070 struct lu_object *new_parent;
2075 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
2079 rc = echo_md_dir_stripe_choose(env, ed, parent, name, namelen,
2084 memset(ma, 0, sizeof(*ma));
2085 ma->ma_attr.la_mode = mode;
2086 ma->ma_attr.la_valid = LA_CTIME;
2087 ma->ma_attr.la_ctime = ktime_get_real_seconds();
2088 ma->ma_need = MA_INODE;
2092 lname->ln_name = name;
2093 lname->ln_namelen = namelen;
2094 rc = echo_md_destroy_internal(env, ed, lu2md(new_parent), lname,
2099 /*prepare the requests*/
2100 for (i = 0; i < count; i++) {
2101 char *tmp_name = info->eti_name;
2104 echo_md_build_name(lname, tmp_name, id);
2106 rc = echo_md_destroy_internal(env, ed, lu2md(new_parent), lname,
2109 CERROR("Can not unlink child %s: rc = %d\n", name, rc);
2116 if (new_parent != parent)
2117 lu_object_put(env, new_parent);
2122 static struct lu_object *echo_resolve_path(const struct lu_env *env,
2123 struct echo_device *ed, char *path,
2126 struct lu_device *ld = ed->ed_next;
2127 struct echo_thread_info *info = echo_env_info(env);
2128 struct lu_fid *fid = &info->eti_fid;
2129 struct lu_name *lname = &info->eti_lname;
2130 struct lu_object *parent = NULL;
2131 struct lu_object *child = NULL;
2135 *fid = ed->ed_root_fid;
2137 /* In the function below, .hs_keycmp resolves to
2138 * lu_obj_hop_keycmp() */
2139 /* coverity[overrun-buffer-val] */
2140 parent = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
2141 if (IS_ERR(parent)) {
2142 CERROR("Can not find the parent "DFID": rc = %ld\n",
2143 PFID(fid), PTR_ERR(parent));
2148 struct lu_object *ld_parent;
2151 e = strsep(&path, "/");
2156 if (!path || path[0] == '\0')
2162 lname->ln_namelen = strlen(e);
2164 ld_parent = lu_object_locate(parent->lo_header, ld->ld_type);
2165 if (ld_parent == NULL) {
2166 lu_object_put(env, parent);
2171 child = echo_md_lookup(env, ed, lu2md(ld_parent), lname);
2172 lu_object_put(env, parent);
2173 if (IS_ERR(child)) {
2174 rc = (int)PTR_ERR(child);
2175 CERROR("lookup %s under parent "DFID": rc = %d\n",
2176 lname->ln_name, PFID(lu_object_fid(ld_parent)),
2183 RETURN(ERR_PTR(rc));
2188 static void echo_ucred_init(struct lu_env *env)
2190 struct lu_ucred *ucred = lu_ucred(env);
2192 ucred->uc_valid = UCRED_INVALID;
2194 ucred->uc_suppgids[0] = -1;
2195 ucred->uc_suppgids[1] = -1;
2197 ucred->uc_uid = ucred->uc_o_uid =
2198 from_kuid(&init_user_ns, current_uid());
2199 ucred->uc_gid = ucred->uc_o_gid =
2200 from_kgid(&init_user_ns, current_gid());
2201 ucred->uc_fsuid = ucred->uc_o_fsuid =
2202 from_kuid(&init_user_ns, current_fsuid());
2203 ucred->uc_fsgid = ucred->uc_o_fsgid =
2204 from_kgid(&init_user_ns, current_fsgid());
2205 ucred->uc_cap = cfs_curproc_cap_pack();
2207 /* remove fs privilege for non-root user. */
2208 if (ucred->uc_fsuid)
2209 ucred->uc_cap &= ~CFS_CAP_FS_MASK;
2210 ucred->uc_valid = UCRED_NEW;
2213 static void echo_ucred_fini(struct lu_env *env)
2215 struct lu_ucred *ucred = lu_ucred(env);
2216 ucred->uc_valid = UCRED_INIT;
2219 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_MD_THREAD)
2220 #define ECHO_MD_SES_TAG (LCT_REMEMBER | LCT_SESSION | LCT_SERVER_SESSION)
2221 static int echo_md_handler(struct echo_device *ed, int command,
2222 char *path, int path_len, __u64 id, int count,
2223 struct obd_ioctl_data *data)
2225 struct echo_thread_info *info;
2226 struct lu_device *ld = ed->ed_next;
2229 struct lu_object *parent;
2231 int namelen = data->ioc_plen2;
2236 CERROR("MD echo client is not being initialized properly\n");
2240 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
2241 CERROR("Only support MDD layer right now!\n");
2245 env = cl_env_get(&refcheck);
2247 RETURN(PTR_ERR(env));
2249 rc = lu_env_refill_by_tags(env, ECHO_MD_CTX_TAG, ECHO_MD_SES_TAG);
2253 /* init big_lmm buffer */
2254 info = echo_env_info(env);
2255 LASSERT(info->eti_big_lmm == NULL);
2256 OBD_ALLOC_LARGE(info->eti_big_lmm, MIN_MD_SIZE);
2257 if (info->eti_big_lmm == NULL)
2258 GOTO(out_env, rc = -ENOMEM);
2259 info->eti_big_lmmsize = MIN_MD_SIZE;
2261 parent = echo_resolve_path(env, ed, path, path_len);
2262 if (IS_ERR(parent)) {
2263 CERROR("Can not resolve the path %s: rc = %ld\n", path,
2265 GOTO(out_free, rc = PTR_ERR(parent));
2269 OBD_ALLOC(name, namelen + 1);
2271 GOTO(out_put, rc = -ENOMEM);
2272 if (copy_from_user(name, data->ioc_pbuf2, namelen))
2273 GOTO(out_name, rc = -EFAULT);
2276 echo_ucred_init(env);
2279 case ECHO_MD_CREATE:
2280 case ECHO_MD_MKDIR: {
2281 struct echo_thread_info *info = echo_env_info(env);
2282 __u32 mode = data->ioc_obdo2.o_mode;
2283 struct lu_fid *fid = &info->eti_fid;
2284 int stripe_count = (int)data->ioc_obdo2.o_misc;
2285 int stripe_index = (int)data->ioc_obdo2.o_stripe_idx;
2287 rc = ostid_to_fid(fid, &data->ioc_obdo1.o_oi, 0);
2291 /* In the function below, .hs_keycmp resolves to
2292 * lu_obj_hop_keycmp() */
2293 /* coverity[overrun-buffer-val] */
2294 rc = echo_create_md_object(env, ed, parent, fid, name, namelen,
2295 id, mode, count, stripe_count,
2299 case ECHO_MD_DESTROY:
2300 case ECHO_MD_RMDIR: {
2301 __u32 mode = data->ioc_obdo2.o_mode;
2303 rc = echo_destroy_object(env, ed, parent, name, namelen,
2307 case ECHO_MD_LOOKUP:
2308 rc = echo_lookup_object(env, ed, parent, id, count);
2310 case ECHO_MD_GETATTR:
2311 rc = echo_getattr_object(env, ed, parent, id, count);
2313 case ECHO_MD_SETATTR:
2314 rc = echo_setattr_object(env, ed, parent, id, count);
2317 CERROR("unknown command %d\n", command);
2321 echo_ucred_fini(env);
2325 OBD_FREE(name, namelen + 1);
2327 lu_object_put(env, parent);
2329 LASSERT(info->eti_big_lmm);
2330 OBD_FREE_LARGE(info->eti_big_lmm, info->eti_big_lmmsize);
2331 info->eti_big_lmm = NULL;
2332 info->eti_big_lmmsize = 0;
2334 cl_env_put(env, &refcheck);
2337 #endif /* HAVE_SERVER_SUPPORT */
2339 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
2342 struct echo_object *eco;
2343 struct echo_client_obd *ec = ed->ed_ec;
2348 if (!(oa->o_valid & OBD_MD_FLID) ||
2349 !(oa->o_valid & OBD_MD_FLGROUP) ||
2350 !fid_seq_is_echo(ostid_seq(&oa->o_oi))) {
2351 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2355 if (ostid_id(&oa->o_oi) == 0) {
2356 rc = ostid_set_id(&oa->o_oi, ++last_object_id);
2361 rc = obd_create(env, ec->ec_exp, oa);
2363 CERROR("Cannot create objects: rc = %d\n", rc);
2369 oa->o_valid |= OBD_MD_FLID;
2371 eco = cl_echo_object_find(ed, &oa->o_oi);
2373 GOTO(failed, rc = PTR_ERR(eco));
2374 cl_echo_object_put(eco);
2376 CDEBUG(D_INFO, "oa oid "DOSTID"\n", POSTID(&oa->o_oi));
2380 if (created && rc != 0)
2381 obd_destroy(env, ec->ec_exp, oa);
2384 CERROR("create object failed with: rc = %d\n", rc);
2389 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
2392 struct echo_object *eco;
2396 if (!(oa->o_valid & OBD_MD_FLID) ||
2397 !(oa->o_valid & OBD_MD_FLGROUP) ||
2398 ostid_id(&oa->o_oi) == 0) {
2399 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2404 eco = cl_echo_object_find(ed, &oa->o_oi);
2413 static void echo_put_object(struct echo_object *eco)
2417 rc = cl_echo_object_put(eco);
2419 CERROR("%s: echo client drop an object failed: rc = %d\n",
2420 eco->eo_dev->ed_ec->ec_exp->exp_obd->obd_name, rc);
2423 static void echo_client_page_debug_setup(struct page *page, int rw, u64 id,
2424 u64 offset, u64 count)
2431 /* no partial pages on the client */
2432 LASSERT(count == PAGE_SIZE);
2436 for (delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2437 if (rw == OBD_BRW_WRITE) {
2438 stripe_off = offset + delta;
2441 stripe_off = 0xdeadbeef00c0ffeeULL;
2442 stripe_id = 0xdeadbeef00c0ffeeULL;
2444 block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE,
2445 stripe_off, stripe_id);
2452 echo_client_page_debug_check(struct page *page, u64 id, u64 offset, u64 count)
2461 /* no partial pages on the client */
2462 LASSERT(count == PAGE_SIZE);
2466 for (rc = delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2467 stripe_off = offset + delta;
2470 rc2 = block_debug_check("test_brw",
2471 addr + delta, OBD_ECHO_BLOCK_SIZE,
2472 stripe_off, stripe_id);
2474 CERROR("Error in echo object %#llx\n", id);
2483 static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
2484 struct echo_object *eco, u64 offset,
2485 u64 count, int async)
2488 struct brw_page *pga;
2489 struct brw_page *pgp;
2490 struct page **pages;
2499 verify = (ostid_id(&oa->o_oi) != ECHO_PERSISTENT_OBJID &&
2500 (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
2501 (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
2503 gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER;
2505 LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
2507 if ((count & (~PAGE_MASK)) != 0)
2510 /* XXX think again with misaligned I/O */
2511 npages = count >> PAGE_SHIFT;
2513 if (rw == OBD_BRW_WRITE)
2514 brw_flags = OBD_BRW_ASYNC;
2516 OBD_ALLOC(pga, npages * sizeof(*pga));
2520 OBD_ALLOC(pages, npages * sizeof(*pages));
2521 if (pages == NULL) {
2522 OBD_FREE(pga, npages * sizeof(*pga));
2526 for (i = 0, pgp = pga, off = offset;
2528 i++, pgp++, off += PAGE_SIZE) {
2530 LASSERT(pgp->pg == NULL); /* for cleanup */
2533 pgp->pg = alloc_page(gfp_mask);
2534 if (pgp->pg == NULL)
2538 pgp->count = PAGE_SIZE;
2540 pgp->flag = brw_flags;
2543 echo_client_page_debug_setup(pgp->pg, rw,
2544 ostid_id(&oa->o_oi), off,
2548 /* brw mode can only be used at client */
2549 LASSERT(ed->ed_next != NULL);
2550 rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
2553 if (rc != 0 || rw != OBD_BRW_READ)
2556 for (i = 0, pgp = pga; i < npages; i++, pgp++) {
2557 if (pgp->pg == NULL)
2562 vrc = echo_client_page_debug_check(pgp->pg,
2563 ostid_id(&oa->o_oi),
2564 pgp->off, pgp->count);
2565 if (vrc != 0 && rc == 0)
2568 __free_page(pgp->pg);
2570 OBD_FREE(pga, npages * sizeof(*pga));
2571 OBD_FREE(pages, npages * sizeof(*pages));
2575 static int echo_client_prep_commit(const struct lu_env *env,
2576 struct obd_export *exp, int rw,
2577 struct obdo *oa, struct echo_object *eco,
2578 u64 offset, u64 count,
2579 u64 batch, int async)
2581 struct obd_ioobj ioo;
2582 struct niobuf_local *lnb;
2583 struct niobuf_remote rnb;
2585 u64 npages, tot_pages, apc;
2586 int i, ret = 0, brw_flags = 0;
2590 if (count <= 0 || (count & ~PAGE_MASK) != 0)
2593 apc = npages = batch >> PAGE_SHIFT;
2594 tot_pages = count >> PAGE_SHIFT;
2596 OBD_ALLOC(lnb, apc * sizeof(struct niobuf_local));
2600 if (rw == OBD_BRW_WRITE && async)
2601 brw_flags |= OBD_BRW_ASYNC;
2603 obdo_to_ioobj(oa, &ioo);
2607 for (; tot_pages > 0; tot_pages -= npages) {
2610 if (tot_pages < npages)
2613 rnb.rnb_offset = off;
2614 rnb.rnb_len = npages * PAGE_SIZE;
2615 rnb.rnb_flags = brw_flags;
2617 off += npages * PAGE_SIZE;
2620 ret = obd_preprw(env, rw, exp, oa, 1, &ioo, &rnb, &lpages, lnb);
2624 for (i = 0; i < lpages; i++) {
2625 struct page *page = lnb[i].lnb_page;
2627 /* read past eof? */
2628 if (page == NULL && lnb[i].lnb_rc == 0)
2632 lnb[i].lnb_flags |= OBD_BRW_ASYNC;
2634 if (ostid_id(&oa->o_oi) == ECHO_PERSISTENT_OBJID ||
2635 (oa->o_valid & OBD_MD_FLFLAGS) == 0 ||
2636 (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0)
2639 if (rw == OBD_BRW_WRITE)
2640 echo_client_page_debug_setup(page, rw,
2641 ostid_id(&oa->o_oi),
2642 lnb[i].lnb_file_offset,
2645 echo_client_page_debug_check(page,
2646 ostid_id(&oa->o_oi),
2647 lnb[i].lnb_file_offset,
2651 ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, &rnb, npages, lnb,
2656 /* Reuse env context. */
2657 lu_context_exit((struct lu_context *)&env->le_ctx);
2658 lu_context_enter((struct lu_context *)&env->le_ctx);
2662 OBD_FREE(lnb, apc * sizeof(struct niobuf_local));
2667 static int echo_client_brw_ioctl(const struct lu_env *env, int rw,
2668 struct obd_export *exp,
2669 struct obd_ioctl_data *data)
2671 struct obd_device *obd = class_exp2obd(exp);
2672 struct echo_device *ed = obd2echo_dev(obd);
2673 struct echo_client_obd *ec = ed->ed_ec;
2674 struct obdo *oa = &data->ioc_obdo1;
2675 struct echo_object *eco;
2681 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
2683 rc = echo_get_object(&eco, ed, oa);
2687 oa->o_valid &= ~OBD_MD_FLHANDLE;
2689 /* OFD/obdfilter works only via prep/commit */
2690 test_mode = (long)data->ioc_pbuf1;
2691 if (ed->ed_next == NULL && test_mode != 3) {
2693 data->ioc_plen1 = data->ioc_count;
2699 /* Truncate batch size to maximum */
2700 if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE)
2701 data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE;
2703 switch (test_mode) {
2707 rc = echo_client_kbrw(ed, rw, oa, eco, data->ioc_offset,
2708 data->ioc_count, async);
2711 rc = echo_client_prep_commit(env, ec->ec_exp, rw, oa, eco,
2712 data->ioc_offset, data->ioc_count,
2713 data->ioc_plen1, async);
2719 echo_put_object(eco);
2725 echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2726 void *karg, void __user *uarg)
2728 #ifdef HAVE_SERVER_SUPPORT
2729 struct tgt_session_info *tsi;
2731 struct obd_device *obd = exp->exp_obd;
2732 struct echo_device *ed = obd2echo_dev(obd);
2733 struct echo_client_obd *ec = ed->ed_ec;
2734 struct echo_object *eco;
2735 struct obd_ioctl_data *data = karg;
2739 int rw = OBD_BRW_READ;
2741 #ifdef HAVE_SERVER_SUPPORT
2742 struct lu_context echo_session;
2746 oa = &data->ioc_obdo1;
2747 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
2748 oa->o_valid |= OBD_MD_FLGROUP;
2749 ostid_set_seq_echo(&oa->o_oi);
2752 /* This FID is unpacked just for validation at this point */
2753 rc = ostid_to_fid(&fid, &oa->o_oi, 0);
2761 rc = lu_env_init(env, LCT_DT_THREAD);
2763 GOTO(out_alloc, rc = -ENOMEM);
2765 #ifdef HAVE_SERVER_SUPPORT
2766 env->le_ses = &echo_session;
2767 rc = lu_context_init(env->le_ses, LCT_SERVER_SESSION | LCT_NOREF);
2768 if (unlikely(rc < 0))
2770 lu_context_enter(env->le_ses);
2772 tsi = tgt_ses_info(env);
2773 tsi->tsi_exp = ec->ec_exp;
2774 tsi->tsi_jobid = NULL;
2777 case OBD_IOC_CREATE: /* may create echo object */
2778 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2779 GOTO (out, rc = -EPERM);
2781 rc = echo_create_object(env, ed, oa);
2784 #ifdef HAVE_SERVER_SUPPORT
2785 case OBD_IOC_ECHO_MD: {
2792 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2793 GOTO(out, rc = -EPERM);
2795 count = data->ioc_count;
2796 cmd = data->ioc_command;
2798 id = data->ioc_obdo2.o_oi.oi.oi_id;
2799 dirlen = data->ioc_plen1;
2800 OBD_ALLOC(dir, dirlen + 1);
2802 GOTO(out, rc = -ENOMEM);
2804 if (copy_from_user(dir, data->ioc_pbuf1, dirlen)) {
2805 OBD_FREE(dir, data->ioc_plen1 + 1);
2806 GOTO(out, rc = -EFAULT);
2809 rc = echo_md_handler(ed, cmd, dir, dirlen, id, count, data);
2810 OBD_FREE(dir, dirlen + 1);
2813 case OBD_IOC_ECHO_ALLOC_SEQ: {
2814 struct lu_env *cl_env;
2819 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2820 GOTO(out, rc = -EPERM);
2822 cl_env = cl_env_get(&refcheck);
2824 GOTO(out, rc = PTR_ERR(cl_env));
2826 rc = lu_env_refill_by_tags(cl_env, ECHO_MD_CTX_TAG,
2829 cl_env_put(cl_env, &refcheck);
2833 rc = seq_client_get_seq(cl_env, ed->ed_cl_seq, &seq);
2834 cl_env_put(cl_env, &refcheck);
2836 CERROR("%s: Can not alloc seq: rc = %d\n",
2841 if (copy_to_user(data->ioc_pbuf1, &seq, data->ioc_plen1))
2844 max_count = LUSTRE_METADATA_SEQ_MAX_WIDTH;
2845 if (copy_to_user(data->ioc_pbuf2, &max_count,
2850 #endif /* HAVE_SERVER_SUPPORT */
2851 case OBD_IOC_DESTROY:
2852 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2853 GOTO (out, rc = -EPERM);
2855 rc = echo_get_object(&eco, ed, oa);
2857 rc = obd_destroy(env, ec->ec_exp, oa);
2859 eco->eo_deleted = 1;
2860 echo_put_object(eco);
2864 case OBD_IOC_GETATTR:
2865 rc = echo_get_object(&eco, ed, oa);
2867 rc = obd_getattr(env, ec->ec_exp, oa);
2868 echo_put_object(eco);
2872 case OBD_IOC_SETATTR:
2873 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2874 GOTO (out, rc = -EPERM);
2876 rc = echo_get_object(&eco, ed, oa);
2878 rc = obd_setattr(env, ec->ec_exp, oa);
2879 echo_put_object(eco);
2883 case OBD_IOC_BRW_WRITE:
2884 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2885 GOTO (out, rc = -EPERM);
2889 case OBD_IOC_BRW_READ:
2890 rc = echo_client_brw_ioctl(env, rw, exp, data);
2894 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd);
2895 GOTO (out, rc = -ENOTTY);
2900 #ifdef HAVE_SERVER_SUPPORT
2901 lu_context_exit(env->le_ses);
2902 lu_context_fini(env->le_ses);
2912 static int echo_client_setup(const struct lu_env *env,
2913 struct obd_device *obddev, struct lustre_cfg *lcfg)
2915 struct echo_client_obd *ec = &obddev->u.echo_client;
2916 struct obd_device *tgt;
2917 struct obd_uuid echo_uuid = { "ECHO_UUID" };
2918 struct obd_connect_data *ocd = NULL;
2922 if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2923 CERROR("requires a TARGET OBD name\n");
2927 tgt = class_name2obd(lustre_cfg_string(lcfg, 1));
2928 if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) {
2929 CERROR("device not attached or not set up (%s)\n",
2930 lustre_cfg_string(lcfg, 1));
2934 spin_lock_init(&ec->ec_lock);
2935 INIT_LIST_HEAD(&ec->ec_objects);
2936 INIT_LIST_HEAD(&ec->ec_locks);
2939 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
2940 #ifdef HAVE_SERVER_SUPPORT
2941 lu_context_tags_update(ECHO_MD_CTX_TAG);
2942 lu_session_tags_update(ECHO_MD_SES_TAG);
2944 CERROR("Local operations are NOT supported on client side. "
2945 "Only remote operations are supported. Metadata client "
2946 "must be run on server side.\n");
2951 OBD_ALLOC(ocd, sizeof(*ocd));
2953 CERROR("Can't alloc ocd connecting to %s\n",
2954 lustre_cfg_string(lcfg, 1));
2958 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
2959 OBD_CONNECT_BRW_SIZE |
2960 OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
2961 OBD_CONNECT_64BITHASH | OBD_CONNECT_LVB_TYPE |
2963 ocd->ocd_brw_size = DT_MAX_BRW_SIZE;
2964 ocd->ocd_version = LUSTRE_VERSION_CODE;
2965 ocd->ocd_group = FID_SEQ_ECHO;
2967 rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
2969 /* Turn off pinger because it connects to tgt obd directly. */
2970 spin_lock(&tgt->obd_dev_lock);
2971 list_del_init(&ec->ec_exp->exp_obd_chain_timed);
2972 spin_unlock(&tgt->obd_dev_lock);
2975 OBD_FREE(ocd, sizeof(*ocd));
2978 CERROR("fail to connect to device %s\n",
2979 lustre_cfg_string(lcfg, 1));
2986 static int echo_client_cleanup(struct obd_device *obddev)
2988 struct echo_device *ed = obd2echo_dev(obddev);
2989 struct echo_client_obd *ec = &obddev->u.echo_client;
2993 /*Do nothing for Metadata echo client*/
2997 if (ed->ed_next_ismd) {
2998 #ifdef HAVE_SERVER_SUPPORT
2999 lu_context_tags_clear(ECHO_MD_CTX_TAG);
3000 lu_session_tags_clear(ECHO_MD_SES_TAG);
3002 CERROR("This is client-side only module, does not support "
3003 "metadata echo client.\n");
3008 if (!list_empty(&obddev->obd_exports)) {
3009 CERROR("still has clients!\n");
3013 LASSERT(atomic_read(&ec->ec_exp->exp_refcount) > 0);
3014 rc = obd_disconnect(ec->ec_exp);
3016 CERROR("fail to disconnect device: %d\n", rc);
3021 static int echo_client_connect(const struct lu_env *env,
3022 struct obd_export **exp,
3023 struct obd_device *src, struct obd_uuid *cluuid,
3024 struct obd_connect_data *data, void *localdata)
3027 struct lustre_handle conn = { 0 };
3030 rc = class_connect(&conn, src, cluuid);
3032 *exp = class_conn2export(&conn);
3038 static int echo_client_disconnect(struct obd_export *exp)
3044 GOTO(out, rc = -EINVAL);
3046 rc = class_disconnect(exp);
3052 static struct obd_ops echo_client_obd_ops = {
3053 .o_owner = THIS_MODULE,
3054 .o_iocontrol = echo_client_iocontrol,
3055 .o_connect = echo_client_connect,
3056 .o_disconnect = echo_client_disconnect
3059 static int __init obdecho_init(void)
3064 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
3066 LASSERT(PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
3068 # ifdef HAVE_SERVER_SUPPORT
3069 rc = echo_persistent_pages_init();
3073 rc = class_register_type(&echo_obd_ops, NULL, true, NULL,
3074 LUSTRE_ECHO_NAME, NULL);
3079 rc = lu_kmem_init(echo_caches);
3081 rc = class_register_type(&echo_client_obd_ops, NULL, true, NULL,
3082 LUSTRE_ECHO_CLIENT_NAME,
3085 lu_kmem_fini(echo_caches);
3088 # ifdef HAVE_SERVER_SUPPORT
3092 class_unregister_type(LUSTRE_ECHO_NAME);
3094 echo_persistent_pages_fini();
3100 static void __exit obdecho_exit(void)
3102 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
3103 lu_kmem_fini(echo_caches);
3105 #ifdef HAVE_SERVER_SUPPORT
3106 class_unregister_type(LUSTRE_ECHO_NAME);
3107 echo_persistent_pages_fini();
3111 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3112 MODULE_DESCRIPTION("Lustre Echo Client test driver");
3113 MODULE_VERSION(LUSTRE_VERSION_STRING);
3114 MODULE_LICENSE("GPL");
3116 module_init(obdecho_init);
3117 module_exit(obdecho_exit);
3119 /** @} echo_client */