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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) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2014 Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/ofd/ofd_objects.c
34 * This file contains OSD API methods related to OBD Filter Device (OFD)
37 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
38 * Author: Mikhail Pershin <mike.pershin@intel.com>
41 #define DEBUG_SUBSYSTEM S_FILTER
43 #include <dt_object.h>
44 #include <lustre/lustre_idl.h>
45 #include <lustre_lfsck.h>
47 #include "ofd_internal.h"
50 * Get object version from disk and check it.
52 * This function checks object version from disk with
53 * ofd_thread_info::fti_pre_version filled from incoming RPC. This is part of
54 * VBR (Version-Based Recovery) and ensures that object has the same version
55 * upon replay as it has during original modification.
57 * \param[in] info execution thread OFD private data
58 * \param[in] fo OFD object
60 * \retval 0 if version matches
61 * \retval -EOVERFLOW on version mismatch
63 static int ofd_version_get_check(struct ofd_thread_info *info,
64 struct ofd_object *fo)
66 dt_obj_version_t curr_version;
68 LASSERT(ofd_object_exists(fo));
70 if (info->fti_exp == NULL)
73 curr_version = dt_version_get(info->fti_env, ofd_object_child(fo));
74 if ((__s64)curr_version == -EOPNOTSUPP)
76 /* VBR: version is checked always because costs nothing */
77 if (info->fti_pre_version != 0 &&
78 info->fti_pre_version != curr_version) {
79 CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
80 info->fti_pre_version, curr_version);
81 spin_lock(&info->fti_exp->exp_lock);
82 info->fti_exp->exp_vbr_failed = 1;
83 spin_unlock(&info->fti_exp->exp_lock);
86 info->fti_pre_version = curr_version;
91 * Get OFD object by FID.
93 * This function finds OFD slice of compound object with the given FID.
95 * \param[in] env execution environment
96 * \param[in] ofd OFD device
97 * \param[in] fid FID of the object
99 * \retval pointer to the found ofd_object
100 * \retval ERR_PTR(errno) in case of error
102 struct ofd_object *ofd_object_find(const struct lu_env *env,
103 struct ofd_device *ofd,
104 const struct lu_fid *fid)
106 struct ofd_object *fo;
111 o = lu_object_find(env, &ofd->ofd_dt_dev.dd_lu_dev, fid, NULL);
112 if (likely(!IS_ERR(o)))
115 fo = ERR_CAST(o); /* return error */
121 * Get FID of parent MDT object.
123 * This function reads extended attribute XATTR_NAME_FID of OFD object which
124 * contains the MDT parent object FID and saves it in ofd_object::ofo_pfid.
126 * The filter_fid::ff_parent::f_ver field currently holds
127 * the OST-object index in the parent MDT-object's layout EA,
128 * not the actual FID::f_ver of the parent. We therefore access
129 * it via the macro f_stripe_idx.
131 * \param[in] env execution environment
132 * \param[in] fo OFD object
134 * \retval 0 if successful
135 * \retval -ENODATA if there is no such xattr
136 * \retval negative value on error
138 int ofd_object_ff_load(const struct lu_env *env, struct ofd_object *fo)
140 struct ofd_thread_info *info = ofd_info(env);
141 struct filter_fid_old *ff = &info->fti_mds_fid_old;
142 struct lu_buf *buf = &info->fti_buf;
143 struct lu_fid *pfid = &fo->ofo_pfid;
146 if (fid_is_sane(pfid))
150 buf->lb_len = sizeof(*ff);
151 rc = dt_xattr_get(env, ofd_object_child(fo), buf, XATTR_NAME_FID,
156 if (rc < sizeof(struct lu_fid)) {
162 pfid->f_seq = le64_to_cpu(ff->ff_parent.f_seq);
163 pfid->f_oid = le32_to_cpu(ff->ff_parent.f_oid);
164 pfid->f_stripe_idx = le32_to_cpu(ff->ff_parent.f_stripe_idx);
170 * Put OFD object reference.
172 * \param[in] env execution environment
173 * \param[in] fo OFD object
175 void ofd_object_put(const struct lu_env *env, struct ofd_object *fo)
177 lu_object_put(env, &fo->ofo_obj.do_lu);
181 * Precreate the given number \a nr of objects in the given sequence \a oseq.
183 * This function precreates new OST objects in the given sequence.
184 * The precreation starts from \a id and creates \a nr objects sequentially.
187 * This function may create fewer objects than requested.
189 * We mark object SUID+SGID to flag it for accepting UID+GID from client on
190 * first write. Currently the permission bits on the OST are never used,
193 * Initialize a/c/m time so any client timestamp will always be newer and
194 * update the inode. The ctime = 0 case is also handled specially in
195 * osd_inode_setattr(). See LU-221, LU-1042 for details.
197 * \param[in] env execution environment
198 * \param[in] ofd OFD device
199 * \param[in] id object ID to start precreation from
200 * \param[in] oseq object sequence
201 * \param[in] nr number of objects to precreate
202 * \param[in] sync synchronous precreation flag
204 * \retval 0 if successful
205 * \retval negative value on error
207 int ofd_precreate_objects(const struct lu_env *env, struct ofd_device *ofd,
208 obd_id id, struct ofd_seq *oseq, int nr, int sync)
210 struct ofd_thread_info *info = ofd_info(env);
211 struct ofd_object *fo = NULL;
212 struct dt_object *next;
214 struct ofd_object **batch;
215 struct lu_fid *fid = &info->fti_fid;
224 /* Don't create objects beyond the valid range for this SEQ */
225 if (unlikely(fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
226 (id + nr) >= IDIF_MAX_OID)) {
227 CERROR("%s:"DOSTID" hit the IDIF_MAX_OID (1<<48)!\n",
228 ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
229 RETURN(rc = -ENOSPC);
230 } else if (unlikely(!fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
231 (id + nr) >= OBIF_MAX_OID)) {
232 CERROR("%s:"DOSTID" hit the OBIF_MAX_OID (1<<32)!\n",
233 ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
234 RETURN(rc = -ENOSPC);
237 OBD_ALLOC(batch, nr_saved * sizeof(struct ofd_object *));
241 info->fti_attr.la_valid = LA_TYPE | LA_MODE;
242 info->fti_attr.la_mode = S_IFREG | S_ISUID | S_ISGID | 0666;
243 info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
245 info->fti_attr.la_valid |= LA_ATIME | LA_MTIME | LA_CTIME;
246 info->fti_attr.la_atime = 0;
247 info->fti_attr.la_mtime = 0;
248 info->fti_attr.la_ctime = 0;
252 /* prepare objects */
253 *fid = *lu_object_fid(&oseq->os_lastid_obj->do_lu);
254 for (i = 0; i < nr; i++) {
255 rc = fid_set_id(fid, id + i);
264 fo = ofd_object_find(env, ofd, fid);
267 GOTO(out, rc = PTR_ERR(fo));
273 ofd_write_lock(env, fo);
276 info->fti_buf.lb_buf = &tmp;
277 info->fti_buf.lb_len = sizeof(tmp);
280 th = ofd_trans_create(env, ofd);
282 GOTO(out, rc = PTR_ERR(th));
286 rc = dt_declare_record_write(env, oseq->os_lastid_obj, &info->fti_buf,
289 GOTO(trans_stop, rc);
291 for (i = 0; i < nr; i++) {
295 if (unlikely(ofd_object_exists(fo))) {
296 /* object may exist being re-created by write replay */
297 CDEBUG(D_INODE, "object "LPX64"/"LPX64" exists: "
298 DFID"\n", ostid_seq(&oseq->os_oi), id,
299 PFID(lu_object_fid(&fo->ofo_obj.do_lu)));
303 next = ofd_object_child(fo);
304 LASSERT(next != NULL);
306 rc = dt_declare_create(env, next, &info->fti_attr, NULL,
310 GOTO(trans_stop, rc);
317 rc = dt_trans_start_local(env, ofd->ofd_osd, th);
319 GOTO(trans_stop, rc);
321 CDEBUG(D_OTHER, "%s: create new object "DFID" nr %d\n",
322 ofd_name(ofd), PFID(fid), nr);
324 /* When the LFSCK scanning the whole device to verify the LAST_ID file
325 * consistency, it will load the last_id into RAM firstly, and compare
326 * the last_id with each OST-object's ID. If the later one is larger,
327 * then it will regard the LAST_ID file crashed. But during the LFSCK
328 * scanning, the OFD may continue to create new OST-objects. Those new
329 * created OST-objects will have larger IDs than the LFSCK known ones.
330 * So from the LFSCK view, it needs to re-load the last_id from disk
331 * file, and if the latest last_id is still smaller than the object's
332 * ID, then the LAST_ID file is real crashed.
334 * To make above mechanism to work, before OFD pre-create OST-objects,
335 * it needs to update the LAST_ID file firstly, otherwise, the LFSCK
336 * may cannot get latest last_id although new OST-object created. */
337 if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_SKIP_LASTID)) {
338 tmp = cpu_to_le64(id + nr - 1);
339 dt_write_lock(env, oseq->os_lastid_obj, 0);
340 rc = dt_record_write(env, oseq->os_lastid_obj,
341 &info->fti_buf, &info->fti_off, th);
342 dt_write_unlock(env, oseq->os_lastid_obj);
344 GOTO(trans_stop, rc);
347 for (i = 0; i < nr; i++) {
351 /* Only the new created objects need to be recorded. */
352 if (ofd->ofd_osd->dd_record_fid_accessed) {
353 struct lfsck_request *lr = &ofd_info(env)->fti_lr;
355 lfsck_pack_rfa(lr, lu_object_fid(&fo->ofo_obj.do_lu),
358 lfsck_in_notify(env, ofd->ofd_osd, lr, NULL);
361 if (likely(!ofd_object_exists(fo) &&
362 !OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING))) {
363 next = ofd_object_child(fo);
364 LASSERT(next != NULL);
366 rc = dt_create(env, next, &info->fti_attr, NULL,
370 GOTO(trans_stop, rc);
375 LASSERT(ofd_object_exists(fo));
377 ofd_seq_last_oid_set(oseq, id + i);
381 /* NOT all the wanted objects have been created,
382 * set the LAST_ID as the real created. */
383 if (unlikely(objects < nr)) {
387 tmp = cpu_to_le64(ofd_seq_last_oid(oseq));
388 dt_write_lock(env, oseq->os_lastid_obj, 0);
389 rc1 = dt_record_write(env, oseq->os_lastid_obj,
390 &info->fti_buf, &info->fti_off, th);
391 dt_write_unlock(env, oseq->os_lastid_obj);
393 CERROR("%s: fail to reset the LAST_ID for seq ("LPX64
394 ") from "LPU64" to "LPU64"\n", ofd_name(ofd),
395 ostid_seq(&oseq->os_oi), id + nr - 1,
396 ofd_seq_last_oid(oseq));
400 ofd_trans_stop(env, ofd, th, rc);
402 for (i = 0; i < nr_saved; i++) {
405 ofd_write_unlock(env, fo);
406 ofd_object_put(env, fo);
409 OBD_FREE(batch, nr_saved * sizeof(struct ofd_object *));
411 CDEBUG((objects == 0 && rc == 0) ? D_ERROR : D_OTHER,
412 "created %d/%d objects: %d\n", objects, nr_saved, rc);
414 LASSERT(ergo(objects == 0, rc < 0));
415 RETURN(objects > 0 ? objects : rc);
419 * Fix the OFD object ownership.
421 * If the object still has SUID+SGID bits set, meaning that it was precreated
422 * by the MDT before it was assigned to any file, (see ofd_precreate_objects())
423 * then we will accept the UID+GID if sent by the client for initializing the
424 * ownership of this object. We only allow this to happen once (so clear these
425 * bits) and later only allow setattr.
427 * \param[in] env execution environment
428 * \param[in] fo OFD object
429 * \param[in] la object attributes
430 * \param[in] is_setattr was this function called from setattr or not
432 * \retval 0 if successful
433 * \retval negative value on error
435 int ofd_attr_handle_ugid(const struct lu_env *env, struct ofd_object *fo,
436 struct lu_attr *la, int is_setattr)
438 struct ofd_thread_info *info = ofd_info(env);
439 struct lu_attr *ln = &info->fti_attr2;
445 if (!(la->la_valid & LA_UID) && !(la->la_valid & LA_GID))
448 rc = dt_attr_get(env, ofd_object_child(fo), ln, BYPASS_CAPA);
452 LASSERT(ln->la_valid & LA_MODE);
455 if (!(ln->la_mode & S_ISUID))
456 la->la_valid &= ~LA_UID;
457 if (!(ln->la_mode & S_ISGID))
458 la->la_valid &= ~LA_GID;
461 if ((la->la_valid & LA_UID) && (ln->la_mode & S_ISUID))
463 if ((la->la_valid & LA_GID) && (ln->la_mode & S_ISGID))
466 if (!(la->la_valid & LA_MODE) || !is_setattr) {
467 la->la_mode = ln->la_mode;
468 la->la_valid |= LA_MODE;
470 la->la_mode &= ~mask;
477 * Set OFD object attributes.
479 * This function sets OFD object attributes taken from incoming request.
480 * It sets not only regular attributes but also XATTR_NAME_FID extended
481 * attribute if needed. The "fid" xattr allows the object's MDT parent inode
482 * to be found and verified by LFSCK and other tools in case of inconsistency.
484 * \param[in] env execution environment
485 * \param[in] fo OFD object
486 * \param[in] la object attributes
487 * \param[in] ff filter_fid structure, contains additional attributes
489 * \retval 0 if successful
490 * \retval negative value on error
492 int ofd_attr_set(const struct lu_env *env, struct ofd_object *fo,
493 struct lu_attr *la, struct filter_fid *ff)
495 struct ofd_thread_info *info = ofd_info(env);
496 struct ofd_device *ofd = ofd_obj2dev(fo);
498 struct ofd_mod_data *fmd;
503 ofd_write_lock(env, fo);
504 if (!ofd_object_exists(fo))
505 GOTO(unlock, rc = -ENOENT);
507 if (la->la_valid & (LA_ATIME | LA_MTIME | LA_CTIME)) {
508 fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
509 if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
510 fmd->fmd_mactime_xid = info->fti_xid;
511 ofd_fmd_put(info->fti_exp, fmd);
514 /* VBR: version recovery check */
515 rc = ofd_version_get_check(info, fo);
519 rc = ofd_attr_handle_ugid(env, fo, la, 1 /* is_setattr */);
524 rc = ofd_object_ff_load(env, fo);
531 th = ofd_trans_create(env, ofd);
533 GOTO(unlock, rc = PTR_ERR(th));
535 rc = dt_declare_attr_set(env, ofd_object_child(fo), la, th);
540 info->fti_buf.lb_buf = ff;
541 info->fti_buf.lb_len = sizeof(*ff);
542 rc = dt_declare_xattr_set(env, ofd_object_child(fo),
543 &info->fti_buf, XATTR_NAME_FID, 0,
549 rc = ofd_trans_start(env, ofd, la->la_valid & LA_SIZE ? fo : NULL, th);
553 rc = dt_attr_set(env, ofd_object_child(fo), la, th,
554 ofd_object_capa(env, fo));
559 rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
560 XATTR_NAME_FID, 0, th, BYPASS_CAPA);
562 fo->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
563 fo->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
564 /* Currently, the filter_fid::ff_parent::f_ver is not
565 * the real parent MDT-object's FID::f_ver, instead it
566 * is the OST-object index in its parent MDT-object's
568 fo->ofo_pfid.f_stripe_idx =
569 le32_to_cpu(ff->ff_parent.f_stripe_idx);
576 ofd_trans_stop(env, ofd, th, rc);
578 ofd_write_unlock(env, fo);
584 * Truncate/punch OFD object.
586 * This function frees all of the allocated object's space from the \a start
587 * offset to the \a end offset. For truncate() operations the \a end offset
588 * is OBD_OBJECT_EOF. The functionality to punch holes in an object via
589 * fallocate(FALLOC_FL_PUNCH_HOLE) is not yet implemented (see LU-3606).
591 * \param[in] env execution environment
592 * \param[in] fo OFD object
593 * \param[in] start start offset to punch from
594 * \param[in] end end of punch
595 * \param[in] la object attributes
596 * \param[in] ff filter_fid structure
597 * \param[in] oa obdo struct from incoming request
599 * \retval 0 if successful
600 * \retval negative value on error
602 int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
603 __u64 start, __u64 end, struct lu_attr *la,
604 struct filter_fid *ff, struct obdo *oa)
606 struct ofd_thread_info *info = ofd_info(env);
607 struct ofd_device *ofd = ofd_obj2dev(fo);
608 struct ofd_mod_data *fmd;
609 struct dt_object *dob = ofd_object_child(fo);
616 /* we support truncate, not punch yet */
617 LASSERT(end == OBD_OBJECT_EOF);
619 ofd_write_lock(env, fo);
620 fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
621 if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
622 fmd->fmd_mactime_xid = info->fti_xid;
623 ofd_fmd_put(info->fti_exp, fmd);
625 if (!ofd_object_exists(fo))
626 GOTO(unlock, rc = -ENOENT);
628 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
629 rc = ofd_verify_ff(env, fo, oa);
634 /* VBR: version recovery check */
635 rc = ofd_version_get_check(info, fo);
639 rc = ofd_attr_handle_ugid(env, fo, la, 0 /* !is_setattr */);
644 rc = ofd_object_ff_load(env, fo);
651 th = ofd_trans_create(env, ofd);
653 GOTO(unlock, rc = PTR_ERR(th));
655 rc = dt_declare_attr_set(env, dob, la, th);
659 rc = dt_declare_punch(env, dob, start, OBD_OBJECT_EOF, th);
664 info->fti_buf.lb_buf = ff;
665 info->fti_buf.lb_len = sizeof(*ff);
666 rc = dt_declare_xattr_set(env, ofd_object_child(fo),
667 &info->fti_buf, XATTR_NAME_FID, 0,
673 rc = ofd_trans_start(env, ofd, fo, th);
677 rc = dt_punch(env, dob, start, OBD_OBJECT_EOF, th,
678 ofd_object_capa(env, fo));
682 rc = dt_attr_set(env, dob, la, th, ofd_object_capa(env, fo));
687 rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
688 XATTR_NAME_FID, 0, th, BYPASS_CAPA);
690 fo->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
691 fo->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
692 /* Currently, the filter_fid::ff_parent::f_ver is not
693 * the real parent MDT-object's FID::f_ver, instead it
694 * is the OST-object index in its parent MDT-object's
696 fo->ofo_pfid.f_stripe_idx =
697 le32_to_cpu(ff->ff_parent.f_stripe_idx);
704 ofd_trans_stop(env, ofd, th, rc);
706 ofd_write_unlock(env, fo);
712 * Destroy OFD object.
714 * This function destroys OFD object. If object wasn't used at all (orphan)
715 * then local transaction is used, which means the transaction data is not
716 * returned back in reply.
718 * \param[in] env execution environment
719 * \param[in] fo OFD object
720 * \param[in] orphan flag to indicate that object is orphaned
722 * \retval 0 if successful
723 * \retval negative value on error
725 int ofd_object_destroy(const struct lu_env *env, struct ofd_object *fo,
728 struct ofd_device *ofd = ofd_obj2dev(fo);
734 ofd_write_lock(env, fo);
735 if (!ofd_object_exists(fo))
736 GOTO(unlock, rc = -ENOENT);
738 th = ofd_trans_create(env, ofd);
740 GOTO(unlock, rc = PTR_ERR(th));
742 rc = dt_declare_ref_del(env, ofd_object_child(fo), th);
746 rc = dt_declare_destroy(env, ofd_object_child(fo), th);
751 rc = dt_trans_start_local(env, ofd->ofd_osd, th);
753 rc = ofd_trans_start(env, ofd, NULL, th);
757 ofd_fmd_drop(ofd_info(env)->fti_exp, &fo->ofo_header.loh_fid);
759 dt_ref_del(env, ofd_object_child(fo), th);
760 dt_destroy(env, ofd_object_child(fo), th);
762 ofd_trans_stop(env, ofd, th, rc);
764 ofd_write_unlock(env, fo);
769 * Get OFD object attributes.
771 * This function gets OFD object regular attributes. It is used to serve
772 * incoming request as well as for local OFD purposes.
774 * \param[in] env execution environment
775 * \param[in] fo OFD object
776 * \param[in] la object attributes
778 * \retval 0 if successful
779 * \retval negative value on error
781 int ofd_attr_get(const struct lu_env *env, struct ofd_object *fo,
788 if (ofd_object_exists(fo)) {
789 rc = dt_attr_get(env, ofd_object_child(fo), la,
790 ofd_object_capa(env, fo));
792 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
793 /* Try to correct for a bug in 2.1.0 (LU-221) that caused
794 * negative timestamps to appear to be in the far future,
795 * due old timestamp being stored on disk as an unsigned value.
796 * This fixes up any bad values stored on disk before
797 * returning them to the client, and ensures any timestamp
798 * updates are correct. LU-1042 */
799 if (unlikely(la->la_atime == LU221_BAD_TIME))
801 if (unlikely(la->la_mtime == LU221_BAD_TIME))
803 if (unlikely(la->la_ctime == LU221_BAD_TIME))