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, &ed->ed_cl.cd_lu_dev, &stripe_fid,
1665 if (IS_ERR(stripe_obj)) {
1666 rc = PTR_ERR(stripe_obj);
1667 CERROR("Can not find the parent "DFID": rc = %d\n",
1668 PFID(&stripe_fid), rc);
1672 *new_parent = lu_object_locate(stripe_obj->lo_header, ld->ld_type);
1673 if (*new_parent == NULL) {
1674 lu_object_put(env, stripe_obj);
1681 static int echo_create_md_object(const struct lu_env *env,
1682 struct echo_device *ed,
1683 struct lu_object *ec_parent,
1685 char *name, int namelen,
1686 __u64 id, __u32 mode, int count,
1687 int stripe_count, int stripe_offset)
1689 struct lu_object *parent;
1690 struct lu_object *new_parent;
1691 struct echo_thread_info *info = echo_env_info(env);
1692 struct lu_name *lname = &info->eti_lname;
1693 struct md_op_spec *spec = &info->eti_spec;
1694 struct md_attr *ma = &info->eti_ma;
1695 struct lu_device *ld = ed->ed_next;
1701 if (ec_parent == NULL)
1703 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1707 rc = echo_md_dir_stripe_choose(env, ed, parent, name, namelen,
1712 LASSERT(new_parent != NULL);
1713 memset(ma, 0, sizeof(*ma));
1714 memset(spec, 0, sizeof(*spec));
1715 echo_set_lmm_size(env, ld, ma);
1716 if (stripe_count != 0) {
1717 spec->sp_cr_flags |= MDS_FMODE_WRITE;
1718 if (stripe_count != -1) {
1719 if (S_ISDIR(mode)) {
1720 struct lmv_user_md *lmu;
1722 lmu = (struct lmv_user_md *)&info->eti_lum;
1723 lmu->lum_magic = LMV_USER_MAGIC;
1724 lmu->lum_stripe_offset = stripe_offset;
1725 lmu->lum_stripe_count = stripe_count;
1726 lmu->lum_hash_type = LMV_HASH_TYPE_FNV_1A_64;
1727 spec->u.sp_ea.eadata = lmu;
1728 spec->u.sp_ea.eadatalen = sizeof(*lmu);
1730 struct lov_user_md_v3 *lum = &info->eti_lum;
1732 lum->lmm_magic = LOV_USER_MAGIC_V3;
1733 lum->lmm_stripe_count = stripe_count;
1734 lum->lmm_stripe_offset = stripe_offset;
1735 lum->lmm_pattern = LOV_PATTERN_NONE;
1736 spec->u.sp_ea.eadata = lum;
1737 spec->u.sp_ea.eadatalen = sizeof(*lum);
1739 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1743 ma->ma_attr.la_mode = mode;
1744 ma->ma_attr.la_valid = LA_CTIME | LA_MODE;
1745 ma->ma_attr.la_ctime = ktime_get_real_seconds();
1748 lname->ln_name = name;
1749 lname->ln_namelen = namelen;
1750 /* If name is specified, only create one object by name */
1751 rc = echo_md_create_internal(env, ed, lu2md(new_parent), fid,
1756 /* Create multiple object sequenced by id */
1757 for (i = 0; i < count; i++) {
1758 char *tmp_name = info->eti_name;
1760 echo_md_build_name(lname, tmp_name, id);
1762 rc = echo_md_create_internal(env, ed, lu2md(new_parent),
1763 fid, lname, spec, ma);
1765 CERROR("Can not create child %s: rc = %d\n", tmp_name,
1774 if (new_parent != parent)
1775 lu_object_put(env, new_parent);
1780 static struct lu_object *echo_md_lookup(const struct lu_env *env,
1781 struct echo_device *ed,
1782 struct md_object *parent,
1783 struct lu_name *lname)
1785 struct echo_thread_info *info = echo_env_info(env);
1786 struct lu_fid *fid = &info->eti_fid;
1787 struct lu_object *child;
1791 CDEBUG(D_INFO, "lookup %s in parent "DFID" %p\n", lname->ln_name,
1794 rc = mdo_lookup(env, parent, lname, fid, NULL);
1796 CERROR("lookup %s: rc = %d\n", lname->ln_name, rc);
1797 RETURN(ERR_PTR(rc));
1800 /* In the function below, .hs_keycmp resolves to
1801 * lu_obj_hop_keycmp() */
1802 /* coverity[overrun-buffer-val] */
1803 child = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
1808 static int echo_setattr_object(const struct lu_env *env,
1809 struct echo_device *ed,
1810 struct lu_object *ec_parent,
1811 __u64 id, int count)
1813 struct lu_object *parent;
1814 struct lu_object *new_parent;
1815 struct echo_thread_info *info = echo_env_info(env);
1816 struct lu_name *lname = &info->eti_lname;
1817 char *name = info->eti_name;
1818 struct lu_device *ld = ed->ed_next;
1819 struct lu_buf *buf = &info->eti_buf;
1825 if (ec_parent == NULL)
1827 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1831 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1836 for (i = 0; i < count; i++) {
1837 struct lu_object *ec_child, *child;
1839 echo_md_build_name(lname, name, id);
1841 ec_child = echo_md_lookup(env, ed, lu2md(new_parent), lname);
1842 if (IS_ERR(ec_child)) {
1843 rc = PTR_ERR(ec_child);
1844 CERROR("Can't find child %s: rc = %d\n",
1845 lname->ln_name, rc);
1849 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1850 if (child == NULL) {
1851 CERROR("Can not locate the child %s\n", lname->ln_name);
1852 lu_object_put(env, ec_child);
1857 CDEBUG(D_RPCTRACE, "Start setattr object "DFID"\n",
1858 PFID(lu_object_fid(child)));
1860 buf->lb_buf = info->eti_xattr_buf;
1861 buf->lb_len = sizeof(info->eti_xattr_buf);
1863 sprintf(name, "%s.test1", XATTR_USER_PREFIX);
1864 rc = mo_xattr_set(env, lu2md(child), buf, name,
1867 CERROR("Can not setattr child "DFID": rc = %d\n",
1868 PFID(lu_object_fid(child)), rc);
1869 lu_object_put(env, ec_child);
1872 CDEBUG(D_RPCTRACE, "End setattr object "DFID"\n",
1873 PFID(lu_object_fid(child)));
1875 lu_object_put(env, ec_child);
1878 if (new_parent != parent)
1879 lu_object_put(env, new_parent);
1884 static int echo_getattr_object(const struct lu_env *env,
1885 struct echo_device *ed,
1886 struct lu_object *ec_parent,
1887 __u64 id, int count)
1889 struct lu_object *parent;
1890 struct lu_object *new_parent;
1891 struct echo_thread_info *info = echo_env_info(env);
1892 struct lu_name *lname = &info->eti_lname;
1893 char *name = info->eti_name;
1894 struct md_attr *ma = &info->eti_ma;
1895 struct lu_device *ld = ed->ed_next;
1901 if (ec_parent == NULL)
1903 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1907 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1912 memset(ma, 0, sizeof(*ma));
1913 ma->ma_need |= MA_INODE | MA_LOV | MA_PFID | MA_HSM | MA_ACL_DEF;
1914 ma->ma_acl = info->eti_xattr_buf;
1915 ma->ma_acl_size = sizeof(info->eti_xattr_buf);
1917 for (i = 0; i < count; i++) {
1918 struct lu_object *ec_child, *child;
1921 echo_md_build_name(lname, name, id);
1922 echo_set_lmm_size(env, ld, ma);
1924 ec_child = echo_md_lookup(env, ed, lu2md(new_parent), lname);
1925 if (IS_ERR(ec_child)) {
1926 CERROR("Can't find child %s: rc = %ld\n",
1927 lname->ln_name, PTR_ERR(ec_child));
1928 RETURN(PTR_ERR(ec_child));
1931 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
1932 if (child == NULL) {
1933 CERROR("Can not locate the child %s\n", lname->ln_name);
1934 lu_object_put(env, ec_child);
1938 CDEBUG(D_RPCTRACE, "Start getattr object "DFID"\n",
1939 PFID(lu_object_fid(child)));
1940 rc = echo_attr_get_complex(env, lu2md(child), ma);
1942 CERROR("Can not getattr child "DFID": rc = %d\n",
1943 PFID(lu_object_fid(child)), rc);
1944 lu_object_put(env, ec_child);
1947 CDEBUG(D_RPCTRACE, "End getattr object "DFID"\n",
1948 PFID(lu_object_fid(child)));
1950 lu_object_put(env, ec_child);
1953 if (new_parent != parent)
1954 lu_object_put(env, new_parent);
1959 static int echo_lookup_object(const struct lu_env *env,
1960 struct echo_device *ed,
1961 struct lu_object *ec_parent,
1962 __u64 id, int count)
1964 struct lu_object *parent;
1965 struct lu_object *new_parent;
1966 struct echo_thread_info *info = echo_env_info(env);
1967 struct lu_name *lname = &info->eti_lname;
1968 char *name = info->eti_name;
1969 struct lu_fid *fid = &info->eti_fid;
1970 struct lu_device *ld = ed->ed_next;
1974 if (ec_parent == NULL)
1976 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
1980 rc = echo_md_dir_stripe_choose(env, ed, parent, NULL, 0, id,
1985 /*prepare the requests*/
1986 for (i = 0; i < count; i++) {
1987 echo_md_build_name(lname, name, id);
1989 CDEBUG(D_RPCTRACE, "Start lookup object "DFID" %s %p\n",
1990 PFID(lu_object_fid(new_parent)), lname->ln_name,
1993 rc = mdo_lookup(env, lu2md(new_parent), lname, fid, NULL);
1995 CERROR("Can not lookup child %s: rc = %d\n", name, rc);
1999 CDEBUG(D_RPCTRACE, "End lookup object "DFID" %s %p\n",
2000 PFID(lu_object_fid(new_parent)), lname->ln_name,
2006 if (new_parent != parent)
2007 lu_object_put(env, new_parent);
2012 static int echo_md_destroy_internal(const struct lu_env *env,
2013 struct echo_device *ed,
2014 struct md_object *parent,
2015 struct lu_name *lname,
2018 struct lu_device *ld = ed->ed_next;
2019 struct lu_object *ec_child;
2020 struct lu_object *child;
2025 ec_child = echo_md_lookup(env, ed, parent, lname);
2026 if (IS_ERR(ec_child)) {
2027 CERROR("Can't find child %s: rc = %ld\n", lname->ln_name,
2029 RETURN(PTR_ERR(ec_child));
2032 child = lu_object_locate(ec_child->lo_header, ld->ld_type);
2033 if (child == NULL) {
2034 CERROR("Can not locate the child %s\n", lname->ln_name);
2035 GOTO(out_put, rc = -EINVAL);
2038 if (lu_object_remote(child)) {
2039 CERROR("Can not destroy remote object %s: rc = %d\n",
2040 lname->ln_name, -EPERM);
2041 GOTO(out_put, rc = -EPERM);
2043 CDEBUG(D_RPCTRACE, "Start destroy object "DFID" %s %p\n",
2044 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
2046 rc = mdo_unlink(env, parent, lu2md(child), lname, ma, 0);
2048 CERROR("Can not unlink child %s: rc = %d\n",
2049 lname->ln_name, rc);
2052 CDEBUG(D_RPCTRACE, "End destroy object "DFID" %s %p\n",
2053 PFID(lu_object_fid(&parent->mo_lu)), lname->ln_name, parent);
2055 lu_object_put(env, ec_child);
2059 static int echo_destroy_object(const struct lu_env *env,
2060 struct echo_device *ed,
2061 struct lu_object *ec_parent,
2062 char *name, int namelen,
2063 __u64 id, __u32 mode,
2066 struct echo_thread_info *info = echo_env_info(env);
2067 struct lu_name *lname = &info->eti_lname;
2068 struct md_attr *ma = &info->eti_ma;
2069 struct lu_device *ld = ed->ed_next;
2070 struct lu_object *parent;
2071 struct lu_object *new_parent;
2076 parent = lu_object_locate(ec_parent->lo_header, ld->ld_type);
2080 rc = echo_md_dir_stripe_choose(env, ed, parent, name, namelen,
2085 memset(ma, 0, sizeof(*ma));
2086 ma->ma_attr.la_mode = mode;
2087 ma->ma_attr.la_valid = LA_CTIME;
2088 ma->ma_attr.la_ctime = ktime_get_real_seconds();
2089 ma->ma_need = MA_INODE;
2093 lname->ln_name = name;
2094 lname->ln_namelen = namelen;
2095 rc = echo_md_destroy_internal(env, ed, lu2md(new_parent), lname,
2100 /*prepare the requests*/
2101 for (i = 0; i < count; i++) {
2102 char *tmp_name = info->eti_name;
2105 echo_md_build_name(lname, tmp_name, id);
2107 rc = echo_md_destroy_internal(env, ed, lu2md(new_parent), lname,
2110 CERROR("Can not unlink child %s: rc = %d\n", name, rc);
2117 if (new_parent != parent)
2118 lu_object_put(env, new_parent);
2123 static struct lu_object *echo_resolve_path(const struct lu_env *env,
2124 struct echo_device *ed, char *path,
2127 struct lu_device *ld = ed->ed_next;
2128 struct echo_thread_info *info = echo_env_info(env);
2129 struct lu_fid *fid = &info->eti_fid;
2130 struct lu_name *lname = &info->eti_lname;
2131 struct lu_object *parent = NULL;
2132 struct lu_object *child = NULL;
2136 *fid = ed->ed_root_fid;
2138 /* In the function below, .hs_keycmp resolves to
2139 * lu_obj_hop_keycmp() */
2140 /* coverity[overrun-buffer-val] */
2141 parent = lu_object_find_at(env, &ed->ed_cl.cd_lu_dev, fid, NULL);
2142 if (IS_ERR(parent)) {
2143 CERROR("Can not find the parent "DFID": rc = %ld\n",
2144 PFID(fid), PTR_ERR(parent));
2149 struct lu_object *ld_parent;
2152 e = strsep(&path, "/");
2157 if (!path || path[0] == '\0')
2163 lname->ln_namelen = strlen(e);
2165 ld_parent = lu_object_locate(parent->lo_header, ld->ld_type);
2166 if (ld_parent == NULL) {
2167 lu_object_put(env, parent);
2172 child = echo_md_lookup(env, ed, lu2md(ld_parent), lname);
2173 lu_object_put(env, parent);
2174 if (IS_ERR(child)) {
2175 rc = (int)PTR_ERR(child);
2176 CERROR("lookup %s under parent "DFID": rc = %d\n",
2177 lname->ln_name, PFID(lu_object_fid(ld_parent)),
2184 RETURN(ERR_PTR(rc));
2189 static void echo_ucred_init(struct lu_env *env)
2191 struct lu_ucred *ucred = lu_ucred(env);
2193 ucred->uc_valid = UCRED_INVALID;
2195 ucred->uc_suppgids[0] = -1;
2196 ucred->uc_suppgids[1] = -1;
2198 ucred->uc_uid = ucred->uc_o_uid =
2199 from_kuid(&init_user_ns, current_uid());
2200 ucred->uc_gid = ucred->uc_o_gid =
2201 from_kgid(&init_user_ns, current_gid());
2202 ucred->uc_fsuid = ucred->uc_o_fsuid =
2203 from_kuid(&init_user_ns, current_fsuid());
2204 ucred->uc_fsgid = ucred->uc_o_fsgid =
2205 from_kgid(&init_user_ns, current_fsgid());
2206 ucred->uc_cap = cfs_curproc_cap_pack();
2208 /* remove fs privilege for non-root user. */
2209 if (ucred->uc_fsuid)
2210 ucred->uc_cap &= ~CFS_CAP_FS_MASK;
2211 ucred->uc_valid = UCRED_NEW;
2214 static void echo_ucred_fini(struct lu_env *env)
2216 struct lu_ucred *ucred = lu_ucred(env);
2217 ucred->uc_valid = UCRED_INIT;
2220 #define ECHO_MD_CTX_TAG (LCT_REMEMBER | LCT_MD_THREAD)
2221 #define ECHO_MD_SES_TAG (LCT_REMEMBER | LCT_SESSION | LCT_SERVER_SESSION)
2222 static int echo_md_handler(struct echo_device *ed, int command,
2223 char *path, int path_len, __u64 id, int count,
2224 struct obd_ioctl_data *data)
2226 struct echo_thread_info *info;
2227 struct lu_device *ld = ed->ed_next;
2230 struct lu_object *parent;
2232 int namelen = data->ioc_plen2;
2237 CERROR("MD echo client is not being initialized properly\n");
2241 if (strcmp(ld->ld_type->ldt_name, LUSTRE_MDD_NAME)) {
2242 CERROR("Only support MDD layer right now!\n");
2246 env = cl_env_get(&refcheck);
2248 RETURN(PTR_ERR(env));
2250 rc = lu_env_refill_by_tags(env, ECHO_MD_CTX_TAG, ECHO_MD_SES_TAG);
2254 /* init big_lmm buffer */
2255 info = echo_env_info(env);
2256 LASSERT(info->eti_big_lmm == NULL);
2257 OBD_ALLOC_LARGE(info->eti_big_lmm, MIN_MD_SIZE);
2258 if (info->eti_big_lmm == NULL)
2259 GOTO(out_env, rc = -ENOMEM);
2260 info->eti_big_lmmsize = MIN_MD_SIZE;
2262 parent = echo_resolve_path(env, ed, path, path_len);
2263 if (IS_ERR(parent)) {
2264 CERROR("Can not resolve the path %s: rc = %ld\n", path,
2266 GOTO(out_free, rc = PTR_ERR(parent));
2270 OBD_ALLOC(name, namelen + 1);
2272 GOTO(out_put, rc = -ENOMEM);
2273 if (copy_from_user(name, data->ioc_pbuf2, namelen))
2274 GOTO(out_name, rc = -EFAULT);
2277 echo_ucred_init(env);
2280 case ECHO_MD_CREATE:
2281 case ECHO_MD_MKDIR: {
2282 struct echo_thread_info *info = echo_env_info(env);
2283 __u32 mode = data->ioc_obdo2.o_mode;
2284 struct lu_fid *fid = &info->eti_fid;
2285 int stripe_count = (int)data->ioc_obdo2.o_misc;
2286 int stripe_index = (int)data->ioc_obdo2.o_stripe_idx;
2288 rc = ostid_to_fid(fid, &data->ioc_obdo1.o_oi, 0);
2292 /* In the function below, .hs_keycmp resolves to
2293 * lu_obj_hop_keycmp() */
2294 /* coverity[overrun-buffer-val] */
2295 rc = echo_create_md_object(env, ed, parent, fid, name, namelen,
2296 id, mode, count, stripe_count,
2300 case ECHO_MD_DESTROY:
2301 case ECHO_MD_RMDIR: {
2302 __u32 mode = data->ioc_obdo2.o_mode;
2304 rc = echo_destroy_object(env, ed, parent, name, namelen,
2308 case ECHO_MD_LOOKUP:
2309 rc = echo_lookup_object(env, ed, parent, id, count);
2311 case ECHO_MD_GETATTR:
2312 rc = echo_getattr_object(env, ed, parent, id, count);
2314 case ECHO_MD_SETATTR:
2315 rc = echo_setattr_object(env, ed, parent, id, count);
2318 CERROR("unknown command %d\n", command);
2322 echo_ucred_fini(env);
2326 OBD_FREE(name, namelen + 1);
2328 lu_object_put(env, parent);
2330 LASSERT(info->eti_big_lmm);
2331 OBD_FREE_LARGE(info->eti_big_lmm, info->eti_big_lmmsize);
2332 info->eti_big_lmm = NULL;
2333 info->eti_big_lmmsize = 0;
2335 cl_env_put(env, &refcheck);
2338 #endif /* HAVE_SERVER_SUPPORT */
2340 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
2343 struct echo_object *eco;
2344 struct echo_client_obd *ec = ed->ed_ec;
2349 if (!(oa->o_valid & OBD_MD_FLID) ||
2350 !(oa->o_valid & OBD_MD_FLGROUP) ||
2351 !fid_seq_is_echo(ostid_seq(&oa->o_oi))) {
2352 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2356 if (ostid_id(&oa->o_oi) == 0) {
2357 rc = ostid_set_id(&oa->o_oi, ++last_object_id);
2362 rc = obd_create(env, ec->ec_exp, oa);
2364 CERROR("Cannot create objects: rc = %d\n", rc);
2370 oa->o_valid |= OBD_MD_FLID;
2372 eco = cl_echo_object_find(ed, &oa->o_oi);
2374 GOTO(failed, rc = PTR_ERR(eco));
2375 cl_echo_object_put(eco);
2377 CDEBUG(D_INFO, "oa oid "DOSTID"\n", POSTID(&oa->o_oi));
2381 if (created && rc != 0)
2382 obd_destroy(env, ec->ec_exp, oa);
2385 CERROR("create object failed with: rc = %d\n", rc);
2390 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
2393 struct echo_object *eco;
2397 if (!(oa->o_valid & OBD_MD_FLID) ||
2398 !(oa->o_valid & OBD_MD_FLGROUP) ||
2399 ostid_id(&oa->o_oi) == 0) {
2400 CERROR("invalid oid "DOSTID"\n", POSTID(&oa->o_oi));
2405 eco = cl_echo_object_find(ed, &oa->o_oi);
2414 static void echo_put_object(struct echo_object *eco)
2418 rc = cl_echo_object_put(eco);
2420 CERROR("%s: echo client drop an object failed: rc = %d\n",
2421 eco->eo_dev->ed_ec->ec_exp->exp_obd->obd_name, rc);
2424 static void echo_client_page_debug_setup(struct page *page, int rw, u64 id,
2425 u64 offset, u64 count)
2432 /* no partial pages on the client */
2433 LASSERT(count == PAGE_SIZE);
2437 for (delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2438 if (rw == OBD_BRW_WRITE) {
2439 stripe_off = offset + delta;
2442 stripe_off = 0xdeadbeef00c0ffeeULL;
2443 stripe_id = 0xdeadbeef00c0ffeeULL;
2445 block_debug_setup(addr + delta, OBD_ECHO_BLOCK_SIZE,
2446 stripe_off, stripe_id);
2453 echo_client_page_debug_check(struct page *page, u64 id, u64 offset, u64 count)
2462 /* no partial pages on the client */
2463 LASSERT(count == PAGE_SIZE);
2467 for (rc = delta = 0; delta < PAGE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
2468 stripe_off = offset + delta;
2471 rc2 = block_debug_check("test_brw",
2472 addr + delta, OBD_ECHO_BLOCK_SIZE,
2473 stripe_off, stripe_id);
2475 CERROR("Error in echo object %#llx\n", id);
2484 static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
2485 struct echo_object *eco, u64 offset,
2486 u64 count, int async)
2489 struct brw_page *pga;
2490 struct brw_page *pgp;
2491 struct page **pages;
2500 verify = (ostid_id(&oa->o_oi) != ECHO_PERSISTENT_OBJID &&
2501 (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
2502 (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
2504 gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER;
2506 LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
2508 if ((count & (~PAGE_MASK)) != 0)
2511 /* XXX think again with misaligned I/O */
2512 npages = count >> PAGE_SHIFT;
2514 if (rw == OBD_BRW_WRITE)
2515 brw_flags = OBD_BRW_ASYNC;
2517 OBD_ALLOC(pga, npages * sizeof(*pga));
2521 OBD_ALLOC(pages, npages * sizeof(*pages));
2522 if (pages == NULL) {
2523 OBD_FREE(pga, npages * sizeof(*pga));
2527 for (i = 0, pgp = pga, off = offset;
2529 i++, pgp++, off += PAGE_SIZE) {
2531 LASSERT(pgp->pg == NULL); /* for cleanup */
2534 pgp->pg = alloc_page(gfp_mask);
2535 if (pgp->pg == NULL)
2539 pgp->count = PAGE_SIZE;
2541 pgp->flag = brw_flags;
2544 echo_client_page_debug_setup(pgp->pg, rw,
2545 ostid_id(&oa->o_oi), off,
2549 /* brw mode can only be used at client */
2550 LASSERT(ed->ed_next != NULL);
2551 rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
2554 if (rc != 0 || rw != OBD_BRW_READ)
2557 for (i = 0, pgp = pga; i < npages; i++, pgp++) {
2558 if (pgp->pg == NULL)
2563 vrc = echo_client_page_debug_check(pgp->pg,
2564 ostid_id(&oa->o_oi),
2565 pgp->off, pgp->count);
2566 if (vrc != 0 && rc == 0)
2569 __free_page(pgp->pg);
2571 OBD_FREE(pga, npages * sizeof(*pga));
2572 OBD_FREE(pages, npages * sizeof(*pages));
2576 static int echo_client_prep_commit(const struct lu_env *env,
2577 struct obd_export *exp, int rw,
2578 struct obdo *oa, struct echo_object *eco,
2579 u64 offset, u64 count,
2580 u64 batch, int async)
2582 struct obd_ioobj ioo;
2583 struct niobuf_local *lnb;
2584 struct niobuf_remote rnb;
2586 u64 npages, tot_pages, apc;
2587 int i, ret = 0, brw_flags = 0;
2591 if (count <= 0 || (count & ~PAGE_MASK) != 0)
2594 apc = npages = batch >> PAGE_SHIFT;
2595 tot_pages = count >> PAGE_SHIFT;
2597 OBD_ALLOC_LARGE(lnb, apc * sizeof(struct niobuf_local));
2601 if (rw == OBD_BRW_WRITE && async)
2602 brw_flags |= OBD_BRW_ASYNC;
2604 obdo_to_ioobj(oa, &ioo);
2608 for (; tot_pages > 0; tot_pages -= npages) {
2611 if (tot_pages < npages)
2614 rnb.rnb_offset = off;
2615 rnb.rnb_len = npages * PAGE_SIZE;
2616 rnb.rnb_flags = brw_flags;
2618 off += npages * PAGE_SIZE;
2621 ret = obd_preprw(env, rw, exp, oa, 1, &ioo, &rnb, &lpages, lnb);
2625 for (i = 0; i < lpages; i++) {
2626 struct page *page = lnb[i].lnb_page;
2628 /* read past eof? */
2629 if (page == NULL && lnb[i].lnb_rc == 0)
2633 lnb[i].lnb_flags |= OBD_BRW_ASYNC;
2635 if (ostid_id(&oa->o_oi) == ECHO_PERSISTENT_OBJID ||
2636 (oa->o_valid & OBD_MD_FLFLAGS) == 0 ||
2637 (oa->o_flags & OBD_FL_DEBUG_CHECK) == 0)
2640 if (rw == OBD_BRW_WRITE)
2641 echo_client_page_debug_setup(page, rw,
2642 ostid_id(&oa->o_oi),
2643 lnb[i].lnb_file_offset,
2646 echo_client_page_debug_check(page,
2647 ostid_id(&oa->o_oi),
2648 lnb[i].lnb_file_offset,
2652 ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, &rnb, npages, lnb,
2657 /* Reuse env context. */
2658 lu_context_exit((struct lu_context *)&env->le_ctx);
2659 lu_context_enter((struct lu_context *)&env->le_ctx);
2663 OBD_FREE_LARGE(lnb, apc * sizeof(struct niobuf_local));
2668 static int echo_client_brw_ioctl(const struct lu_env *env, int rw,
2669 struct obd_export *exp,
2670 struct obd_ioctl_data *data)
2672 struct obd_device *obd = class_exp2obd(exp);
2673 struct echo_device *ed = obd2echo_dev(obd);
2674 struct echo_client_obd *ec = ed->ed_ec;
2675 struct obdo *oa = &data->ioc_obdo1;
2676 struct echo_object *eco;
2682 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
2684 rc = echo_get_object(&eco, ed, oa);
2688 oa->o_valid &= ~OBD_MD_FLHANDLE;
2690 /* OFD/obdfilter works only via prep/commit */
2691 test_mode = (long)data->ioc_pbuf1;
2692 if (ed->ed_next == NULL && test_mode != 3) {
2694 data->ioc_plen1 = data->ioc_count;
2700 /* Truncate batch size to maximum */
2701 if (data->ioc_plen1 > PTLRPC_MAX_BRW_SIZE)
2702 data->ioc_plen1 = PTLRPC_MAX_BRW_SIZE;
2704 switch (test_mode) {
2708 rc = echo_client_kbrw(ed, rw, oa, eco, data->ioc_offset,
2709 data->ioc_count, async);
2712 rc = echo_client_prep_commit(env, ec->ec_exp, rw, oa, eco,
2713 data->ioc_offset, data->ioc_count,
2714 data->ioc_plen1, async);
2720 echo_put_object(eco);
2726 echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2727 void *karg, void __user *uarg)
2729 #ifdef HAVE_SERVER_SUPPORT
2730 struct tgt_session_info *tsi;
2732 struct obd_device *obd = exp->exp_obd;
2733 struct echo_device *ed = obd2echo_dev(obd);
2734 struct echo_client_obd *ec = ed->ed_ec;
2735 struct echo_object *eco;
2736 struct obd_ioctl_data *data = karg;
2740 int rw = OBD_BRW_READ;
2742 #ifdef HAVE_SERVER_SUPPORT
2743 struct lu_context echo_session;
2747 oa = &data->ioc_obdo1;
2748 if (!(oa->o_valid & OBD_MD_FLGROUP)) {
2749 oa->o_valid |= OBD_MD_FLGROUP;
2750 ostid_set_seq_echo(&oa->o_oi);
2753 /* This FID is unpacked just for validation at this point */
2754 rc = ostid_to_fid(&fid, &oa->o_oi, 0);
2762 rc = lu_env_init(env, LCT_DT_THREAD);
2764 GOTO(out_alloc, rc = -ENOMEM);
2766 #ifdef HAVE_SERVER_SUPPORT
2767 env->le_ses = &echo_session;
2768 rc = lu_context_init(env->le_ses, LCT_SERVER_SESSION | LCT_NOREF);
2769 if (unlikely(rc < 0))
2771 lu_context_enter(env->le_ses);
2773 tsi = tgt_ses_info(env);
2774 tsi->tsi_exp = ec->ec_exp;
2775 tsi->tsi_jobid = NULL;
2778 case OBD_IOC_CREATE: /* may create echo object */
2779 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2780 GOTO (out, rc = -EPERM);
2782 rc = echo_create_object(env, ed, oa);
2785 #ifdef HAVE_SERVER_SUPPORT
2786 case OBD_IOC_ECHO_MD: {
2793 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2794 GOTO(out, rc = -EPERM);
2796 count = data->ioc_count;
2797 cmd = data->ioc_command;
2799 id = data->ioc_obdo2.o_oi.oi.oi_id;
2800 dirlen = data->ioc_plen1;
2801 OBD_ALLOC(dir, dirlen + 1);
2803 GOTO(out, rc = -ENOMEM);
2805 if (copy_from_user(dir, data->ioc_pbuf1, dirlen)) {
2806 OBD_FREE(dir, data->ioc_plen1 + 1);
2807 GOTO(out, rc = -EFAULT);
2810 rc = echo_md_handler(ed, cmd, dir, dirlen, id, count, data);
2811 OBD_FREE(dir, dirlen + 1);
2814 case OBD_IOC_ECHO_ALLOC_SEQ: {
2815 struct lu_env *cl_env;
2820 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2821 GOTO(out, rc = -EPERM);
2823 cl_env = cl_env_get(&refcheck);
2825 GOTO(out, rc = PTR_ERR(cl_env));
2827 rc = lu_env_refill_by_tags(cl_env, ECHO_MD_CTX_TAG,
2830 cl_env_put(cl_env, &refcheck);
2834 rc = seq_client_get_seq(cl_env, ed->ed_cl_seq, &seq);
2835 cl_env_put(cl_env, &refcheck);
2837 CERROR("%s: Can not alloc seq: rc = %d\n",
2842 if (copy_to_user(data->ioc_pbuf1, &seq, data->ioc_plen1))
2845 max_count = LUSTRE_METADATA_SEQ_MAX_WIDTH;
2846 if (copy_to_user(data->ioc_pbuf2, &max_count,
2851 #endif /* HAVE_SERVER_SUPPORT */
2852 case OBD_IOC_DESTROY:
2853 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2854 GOTO (out, rc = -EPERM);
2856 rc = echo_get_object(&eco, ed, oa);
2858 rc = obd_destroy(env, ec->ec_exp, oa);
2860 eco->eo_deleted = 1;
2861 echo_put_object(eco);
2865 case OBD_IOC_GETATTR:
2866 rc = echo_get_object(&eco, ed, oa);
2868 rc = obd_getattr(env, ec->ec_exp, oa);
2869 echo_put_object(eco);
2873 case OBD_IOC_SETATTR:
2874 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2875 GOTO (out, rc = -EPERM);
2877 rc = echo_get_object(&eco, ed, oa);
2879 rc = obd_setattr(env, ec->ec_exp, oa);
2880 echo_put_object(eco);
2884 case OBD_IOC_BRW_WRITE:
2885 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2886 GOTO (out, rc = -EPERM);
2890 case OBD_IOC_BRW_READ:
2891 rc = echo_client_brw_ioctl(env, rw, exp, data);
2895 CERROR ("echo_ioctl(): unrecognised ioctl %#x\n", cmd);
2896 GOTO (out, rc = -ENOTTY);
2901 #ifdef HAVE_SERVER_SUPPORT
2902 lu_context_exit(env->le_ses);
2903 lu_context_fini(env->le_ses);
2913 static int echo_client_setup(const struct lu_env *env,
2914 struct obd_device *obddev, struct lustre_cfg *lcfg)
2916 struct echo_client_obd *ec = &obddev->u.echo_client;
2917 struct obd_device *tgt;
2918 struct obd_uuid echo_uuid = { "ECHO_UUID" };
2919 struct obd_connect_data *ocd = NULL;
2923 if (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2924 CERROR("requires a TARGET OBD name\n");
2928 tgt = class_name2obd(lustre_cfg_string(lcfg, 1));
2929 if (!tgt || !tgt->obd_attached || !tgt->obd_set_up) {
2930 CERROR("device not attached or not set up (%s)\n",
2931 lustre_cfg_string(lcfg, 1));
2935 spin_lock_init(&ec->ec_lock);
2936 INIT_LIST_HEAD(&ec->ec_objects);
2937 INIT_LIST_HEAD(&ec->ec_locks);
2940 if (!strcmp(tgt->obd_type->typ_name, LUSTRE_MDT_NAME)) {
2941 #ifdef HAVE_SERVER_SUPPORT
2942 lu_context_tags_update(ECHO_MD_CTX_TAG);
2943 lu_session_tags_update(ECHO_MD_SES_TAG);
2945 CERROR("Local operations are NOT supported on client side. "
2946 "Only remote operations are supported. Metadata client "
2947 "must be run on server side.\n");
2952 OBD_ALLOC(ocd, sizeof(*ocd));
2954 CERROR("Can't alloc ocd connecting to %s\n",
2955 lustre_cfg_string(lcfg, 1));
2959 ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
2960 OBD_CONNECT_BRW_SIZE |
2961 OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
2962 OBD_CONNECT_64BITHASH | OBD_CONNECT_LVB_TYPE |
2964 ocd->ocd_brw_size = DT_MAX_BRW_SIZE;
2965 ocd->ocd_version = LUSTRE_VERSION_CODE;
2966 ocd->ocd_group = FID_SEQ_ECHO;
2968 rc = obd_connect(env, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
2970 /* Turn off pinger because it connects to tgt obd directly. */
2971 spin_lock(&tgt->obd_dev_lock);
2972 list_del_init(&ec->ec_exp->exp_obd_chain_timed);
2973 spin_unlock(&tgt->obd_dev_lock);
2976 OBD_FREE(ocd, sizeof(*ocd));
2979 CERROR("fail to connect to device %s\n",
2980 lustre_cfg_string(lcfg, 1));
2987 static int echo_client_cleanup(struct obd_device *obddev)
2989 struct echo_device *ed = obd2echo_dev(obddev);
2990 struct echo_client_obd *ec = &obddev->u.echo_client;
2994 /*Do nothing for Metadata echo client*/
2998 if (ed->ed_next_ismd) {
2999 #ifdef HAVE_SERVER_SUPPORT
3000 lu_context_tags_clear(ECHO_MD_CTX_TAG);
3001 lu_session_tags_clear(ECHO_MD_SES_TAG);
3003 CERROR("This is client-side only module, does not support "
3004 "metadata echo client.\n");
3009 if (!list_empty(&obddev->obd_exports)) {
3010 CERROR("still has clients!\n");
3014 LASSERT(atomic_read(&ec->ec_exp->exp_refcount) > 0);
3015 rc = obd_disconnect(ec->ec_exp);
3017 CERROR("fail to disconnect device: %d\n", rc);
3022 static int echo_client_connect(const struct lu_env *env,
3023 struct obd_export **exp,
3024 struct obd_device *src, struct obd_uuid *cluuid,
3025 struct obd_connect_data *data, void *localdata)
3028 struct lustre_handle conn = { 0 };
3031 rc = class_connect(&conn, src, cluuid);
3033 *exp = class_conn2export(&conn);
3039 static int echo_client_disconnect(struct obd_export *exp)
3045 GOTO(out, rc = -EINVAL);
3047 rc = class_disconnect(exp);
3053 static struct obd_ops echo_client_obd_ops = {
3054 .o_owner = THIS_MODULE,
3055 .o_iocontrol = echo_client_iocontrol,
3056 .o_connect = echo_client_connect,
3057 .o_disconnect = echo_client_disconnect
3060 static int __init obdecho_init(void)
3065 LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
3067 LASSERT(PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
3069 # ifdef HAVE_SERVER_SUPPORT
3070 rc = echo_persistent_pages_init();
3074 rc = class_register_type(&echo_obd_ops, NULL, true, NULL,
3075 LUSTRE_ECHO_NAME, &echo_srv_type);
3080 rc = lu_kmem_init(echo_caches);
3082 rc = class_register_type(&echo_client_obd_ops, NULL, false,
3083 NULL, LUSTRE_ECHO_CLIENT_NAME,
3086 lu_kmem_fini(echo_caches);
3089 # ifdef HAVE_SERVER_SUPPORT
3093 class_unregister_type(LUSTRE_ECHO_NAME);
3095 echo_persistent_pages_fini();
3101 static void __exit obdecho_exit(void)
3103 class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
3104 lu_kmem_fini(echo_caches);
3106 #ifdef HAVE_SERVER_SUPPORT
3107 class_unregister_type(LUSTRE_ECHO_NAME);
3108 echo_persistent_pages_fini();
3112 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3113 MODULE_DESCRIPTION("Lustre Echo Client test driver");
3114 MODULE_VERSION(LUSTRE_VERSION_STRING);
3115 MODULE_LICENSE("GPL");
3117 module_init(obdecho_init);
3118 module_exit(obdecho_exit);
3120 /** @} echo_client */