X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flfsck%2Flfsck_lib.c;h=b669e42d6ac904df70cb7be516c47adce8401625;hb=b69b7de30c3977cb69a741099218bc4a81752717;hp=a4c963cbb8016415af8bf46a87c3cef1e533d3b3;hpb=da12d3ba35bbb86c8e5860a5ed161a55f01b69d5;p=fs%2Flustre-release.git diff --git a/lustre/lfsck/lfsck_lib.c b/lustre/lfsck/lfsck_lib.c index a4c963c..b669e42 100644 --- a/lustre/lfsck/lfsck_lib.c +++ b/lustre/lfsck/lfsck_lib.c @@ -51,6 +51,7 @@ static void lfsck_key_fini(const struct lu_context *ctx, struct lfsck_thread_info *info = data; lu_buf_free(&info->lti_linkea_buf); + lu_buf_free(&info->lti_big_buf); OBD_FREE_PTR(info); } @@ -58,50 +59,223 @@ LU_CONTEXT_KEY_DEFINE(lfsck, LCT_MD_THREAD | LCT_DT_THREAD); LU_KEY_INIT_GENERIC(lfsck); static CFS_LIST_HEAD(lfsck_instance_list); +static struct list_head lfsck_ost_orphan_list; +static struct list_head lfsck_mdt_orphan_list; static DEFINE_SPINLOCK(lfsck_instance_lock); -const char *lfsck_status_names[] = { - "init", - "scanning-phase1", - "scanning-phase2", - "completed", - "failed", - "stopped", - "paused", - "crashed", - NULL +static const char *lfsck_status_names[] = { + [LS_INIT] = "init", + [LS_SCANNING_PHASE1] = "scanning-phase1", + [LS_SCANNING_PHASE2] = "scanning-phase2", + [LS_COMPLETED] = "completed", + [LS_FAILED] = "failed", + [LS_STOPPED] = "stopped", + [LS_PAUSED] = "paused", + [LS_CRASHED] = "crashed", + [LS_PARTIAL] = "partial", + [LS_CO_FAILED] = "co-failed", + [LS_CO_STOPPED] = "co-stopped", + [LS_CO_PAUSED] = "co-paused" }; const char *lfsck_flags_names[] = { "scanned-once", "inconsistent", "upgrade", + "incomplete", + "crashed_lastid", NULL }; const char *lfsck_param_names[] = { + NULL, "failout", "dryrun", + "all_targets", + "broadcast", + "orphan", + "create_ostobj", NULL }; -static inline void lfsck_component_get(struct lfsck_component *com) +const char *lfsck_status2names(enum lfsck_status status) +{ + if (unlikely(status < 0 || status >= LS_MAX)) + return "unknown"; + + return lfsck_status_names[status]; +} + +static int lfsck_tgt_descs_init(struct lfsck_tgt_descs *ltds) +{ + spin_lock_init(<ds->ltd_lock); + init_rwsem(<ds->ltd_rw_sem); + INIT_LIST_HEAD(<ds->ltd_orphan); + ltds->ltd_tgts_bitmap = CFS_ALLOCATE_BITMAP(BITS_PER_LONG); + if (ltds->ltd_tgts_bitmap == NULL) + return -ENOMEM; + + return 0; +} + +static void lfsck_tgt_descs_fini(struct lfsck_tgt_descs *ltds) { - atomic_inc(&com->lc_ref); + struct lfsck_tgt_desc *ltd; + struct lfsck_tgt_desc *next; + int idx; + + down_write(<ds->ltd_rw_sem); + + list_for_each_entry_safe(ltd, next, <ds->ltd_orphan, + ltd_orphan_list) { + list_del_init(<d->ltd_orphan_list); + lfsck_tgt_put(ltd); + } + + if (unlikely(ltds->ltd_tgts_bitmap == NULL)) { + up_write(<ds->ltd_rw_sem); + + return; + } + + cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) { + ltd = LTD_TGT(ltds, idx); + if (likely(ltd != NULL)) { + LASSERT(list_empty(<d->ltd_layout_list)); + LASSERT(list_empty(<d->ltd_layout_phase_list)); + + ltds->ltd_tgtnr--; + cfs_bitmap_clear(ltds->ltd_tgts_bitmap, idx); + LTD_TGT(ltds, idx) = NULL; + lfsck_tgt_put(ltd); + } + } + + LASSERTF(ltds->ltd_tgtnr == 0, "tgt count unmatched: %d\n", + ltds->ltd_tgtnr); + + for (idx = 0; idx < TGT_PTRS; idx++) { + if (ltds->ltd_tgts_idx[idx] != NULL) { + OBD_FREE_PTR(ltds->ltd_tgts_idx[idx]); + ltds->ltd_tgts_idx[idx] = NULL; + } + } + + CFS_FREE_BITMAP(ltds->ltd_tgts_bitmap); + ltds->ltd_tgts_bitmap = NULL; + up_write(<ds->ltd_rw_sem); +} + +static int __lfsck_add_target(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct lfsck_tgt_desc *ltd, + bool for_ost, bool locked) +{ + struct lfsck_tgt_descs *ltds; + __u32 index = ltd->ltd_index; + int rc = 0; + ENTRY; + + if (for_ost) + ltds = &lfsck->li_ost_descs; + else + ltds = &lfsck->li_mdt_descs; + + if (!locked) + down_write(<ds->ltd_rw_sem); + + LASSERT(ltds->ltd_tgts_bitmap != NULL); + + if (index >= ltds->ltd_tgts_bitmap->size) { + __u32 newsize = max((__u32)ltds->ltd_tgts_bitmap->size, + (__u32)BITS_PER_LONG); + cfs_bitmap_t *old_bitmap = ltds->ltd_tgts_bitmap; + cfs_bitmap_t *new_bitmap; + + while (newsize < index + 1) + newsize <<= 1; + + new_bitmap = CFS_ALLOCATE_BITMAP(newsize); + if (new_bitmap == NULL) + GOTO(unlock, rc = -ENOMEM); + + if (ltds->ltd_tgtnr > 0) + cfs_bitmap_copy(new_bitmap, old_bitmap); + ltds->ltd_tgts_bitmap = new_bitmap; + CFS_FREE_BITMAP(old_bitmap); + } + + if (cfs_bitmap_check(ltds->ltd_tgts_bitmap, index)) { + CERROR("%s: the device %s (%u) is registered already\n", + lfsck_lfsck2name(lfsck), + ltd->ltd_tgt->dd_lu_dev.ld_obd->obd_name, index); + GOTO(unlock, rc = -EEXIST); + } + + if (ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK] == NULL) { + OBD_ALLOC_PTR(ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK]); + if (ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK] == NULL) + GOTO(unlock, rc = -ENOMEM); + } + + LTD_TGT(ltds, index) = ltd; + cfs_bitmap_set(ltds->ltd_tgts_bitmap, index); + ltds->ltd_tgtnr++; + + GOTO(unlock, rc = 0); + +unlock: + if (!locked) + up_write(<ds->ltd_rw_sem); + + return rc; } -static inline void lfsck_component_put(const struct lu_env *env, - struct lfsck_component *com) +static int lfsck_add_target_from_orphan(const struct lu_env *env, + struct lfsck_instance *lfsck) { - if (atomic_dec_and_test(&com->lc_ref)) { - if (com->lc_obj != NULL) - lu_object_put_nocache(env, &com->lc_obj->do_lu); - if (com->lc_file_ram != NULL) - OBD_FREE(com->lc_file_ram, com->lc_file_size); - if (com->lc_file_disk != NULL) - OBD_FREE(com->lc_file_disk, com->lc_file_size); - OBD_FREE_PTR(com); + struct lfsck_tgt_descs *ltds = &lfsck->li_ost_descs; + struct lfsck_tgt_desc *ltd; + struct lfsck_tgt_desc *next; + struct list_head *head = &lfsck_ost_orphan_list; + int rc; + bool for_ost = true; + +again: + spin_lock(&lfsck_instance_lock); + list_for_each_entry_safe(ltd, next, head, ltd_orphan_list) { + if (ltd->ltd_key == lfsck->li_bottom) { + list_del_init(<d->ltd_orphan_list); + list_add_tail(<d->ltd_orphan_list, + <ds->ltd_orphan); + } } + spin_unlock(&lfsck_instance_lock); + + down_write(<ds->ltd_rw_sem); + while (!list_empty(<ds->ltd_orphan)) { + ltd = list_entry(ltds->ltd_orphan.next, + struct lfsck_tgt_desc, + ltd_orphan_list); + list_del_init(<d->ltd_orphan_list); + rc = __lfsck_add_target(env, lfsck, ltd, for_ost, true); + /* Do not hold the semaphore for too long time. */ + up_write(<ds->ltd_rw_sem); + if (rc != 0) + return rc; + + down_write(<ds->ltd_rw_sem); + } + up_write(<ds->ltd_rw_sem); + + if (for_ost) { + ltds = &lfsck->li_mdt_descs; + head = &lfsck_mdt_orphan_list; + for_ost = false; + goto again; + } + + return 0; } static inline struct lfsck_component * @@ -116,7 +290,7 @@ __lfsck_component_find(struct lfsck_instance *lfsck, __u16 type, cfs_list_t *lis return NULL; } -static struct lfsck_component * +struct lfsck_component * lfsck_component_find(struct lfsck_instance *lfsck, __u16 type) { struct lfsck_component *com; @@ -151,8 +325,525 @@ void lfsck_component_cleanup(const struct lu_env *env, lfsck_component_put(env, com); } -static void lfsck_instance_cleanup(const struct lu_env *env, - struct lfsck_instance *lfsck) +int lfsck_fid_alloc(const struct lu_env *env, struct lfsck_instance *lfsck, + struct lu_fid *fid, bool locked) +{ + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + int rc = 0; + ENTRY; + + if (!locked) + mutex_lock(&lfsck->li_mutex); + + rc = seq_client_alloc_fid(env, lfsck->li_seq, fid); + if (rc >= 0) { + bk->lb_last_fid = *fid; + /* We do not care about whether the subsequent sub-operations + * failed or not. The worst case is that one FID is lost that + * is not a big issue for the LFSCK since it is relative rare + * for LFSCK create. */ + rc = lfsck_bookmark_store(env, lfsck); + } + + if (!locked) + mutex_unlock(&lfsck->li_mutex); + + RETURN(rc); +} + +static const char dot[] = "."; +static const char dotdot[] = ".."; +static const char dotlustre[] = ".lustre"; +static const char lostfound[] = "lost+found"; + +static int lfsck_create_lpf_local(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct dt_object *parent, + struct dt_object *child, + struct lu_attr *la, + struct dt_object_format *dof, + const char *name) +{ + struct dt_insert_rec *rec = &lfsck_env_info(env)->lti_dt_rec; + struct dt_device *dev = lfsck->li_bottom; + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + struct dt_object *bk_obj = lfsck->li_bookmark_obj; + const struct lu_fid *cfid = lfsck_dto2fid(child); + struct thandle *th = NULL; + struct linkea_data ldata = { 0 }; + struct lu_buf linkea_buf; + const struct lu_name *cname; + loff_t pos = 0; + int len = sizeof(struct lfsck_bookmark); + int rc; + ENTRY; + + rc = linkea_data_new(&ldata, + &lfsck_env_info(env)->lti_linkea_buf); + if (rc != 0) + RETURN(rc); + + cname = lfsck_name_get_const(env, name, strlen(name)); + rc = linkea_add_buf(&ldata, cname, lfsck_dto2fid(parent)); + if (rc != 0) + RETURN(rc); + + th = dt_trans_create(env, dev); + if (IS_ERR(th)) + RETURN(PTR_ERR(th)); + + /* 1a. create child */ + rc = dt_declare_create(env, child, la, NULL, dof, th); + if (rc != 0) + GOTO(stop, rc); + + /* 2a. increase child nlink */ + rc = dt_declare_ref_add(env, child, th); + if (rc != 0) + GOTO(stop, rc); + + /* 3a. insert linkEA for child */ + linkea_buf.lb_buf = ldata.ld_buf->lb_buf; + linkea_buf.lb_len = ldata.ld_leh->leh_len; + rc = dt_declare_xattr_set(env, child, &linkea_buf, + XATTR_NAME_LINK, 0, th); + if (rc != 0) + GOTO(stop, rc); + + /* 4a. insert name into parent dir */ + rec->rec_type = S_IFDIR; + rec->rec_fid = cfid; + rc = dt_declare_insert(env, parent, (const struct dt_rec *)rec, + (const struct dt_key *)name, th); + if (rc != 0) + GOTO(stop, rc); + + /* 5a. increase parent nlink */ + rc = dt_declare_ref_add(env, parent, th); + if (rc != 0) + GOTO(stop, rc); + + /* 6a. update bookmark */ + rc = dt_declare_record_write(env, bk_obj, + lfsck_buf_get(env, bk, len), 0, th); + if (rc != 0) + GOTO(stop, rc); + + rc = dt_trans_start_local(env, dev, th); + if (rc != 0) + GOTO(stop, rc); + + dt_write_lock(env, child, 0); + /* 1b.1. create child */ + rc = dt_create(env, child, la, NULL, dof, th); + if (rc != 0) + GOTO(unlock, rc); + + if (unlikely(!dt_try_as_dir(env, child))) + GOTO(unlock, rc = -ENOTDIR); + + /* 1b.2. insert dot into child dir */ + rec->rec_fid = cfid; + rc = dt_insert(env, child, (const struct dt_rec *)rec, + (const struct dt_key *)dot, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(unlock, rc); + + /* 1b.3. insert dotdot into child dir */ + rec->rec_fid = &LU_LPF_FID; + rc = dt_insert(env, child, (const struct dt_rec *)rec, + (const struct dt_key *)dotdot, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(unlock, rc); + + /* 2b. increase child nlink */ + rc = dt_ref_add(env, child, th); + if (rc != 0) + GOTO(unlock, rc); + + /* 3b. insert linkEA for child. */ + rc = dt_xattr_set(env, child, &linkea_buf, + XATTR_NAME_LINK, 0, th, BYPASS_CAPA); + dt_write_unlock(env, child); + if (rc != 0) + GOTO(stop, rc); + + /* 4b. insert name into parent dir */ + rec->rec_fid = cfid; + rc = dt_insert(env, parent, (const struct dt_rec *)rec, + (const struct dt_key *)name, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(stop, rc); + + dt_write_lock(env, parent, 0); + /* 5b. increase parent nlink */ + rc = dt_ref_add(env, parent, th); + dt_write_unlock(env, parent); + if (rc != 0) + GOTO(stop, rc); + + bk->lb_lpf_fid = *cfid; + lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk, bk); + + /* 6b. update bookmark */ + rc = dt_record_write(env, bk_obj, + lfsck_buf_get(env, bk, len), &pos, th); + + GOTO(stop, rc); + +unlock: + dt_write_unlock(env, child); + +stop: + dt_trans_stop(env, dev, th); + + return rc; +} + +static int lfsck_create_lpf_remote(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct dt_object *parent, + struct dt_object *child, + struct lu_attr *la, + struct dt_object_format *dof, + const char *name) +{ + struct dt_insert_rec *rec = &lfsck_env_info(env)->lti_dt_rec; + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + struct dt_object *bk_obj = lfsck->li_bookmark_obj; + const struct lu_fid *cfid = lfsck_dto2fid(child); + struct thandle *th = NULL; + struct linkea_data ldata = { 0 }; + struct lu_buf linkea_buf; + const struct lu_name *cname; + struct dt_device *dev; + loff_t pos = 0; + int len = sizeof(struct lfsck_bookmark); + int rc; + ENTRY; + + rc = linkea_data_new(&ldata, + &lfsck_env_info(env)->lti_linkea_buf); + if (rc != 0) + RETURN(rc); + + cname = lfsck_name_get_const(env, name, strlen(name)); + rc = linkea_add_buf(&ldata, cname, lfsck_dto2fid(parent)); + if (rc != 0) + RETURN(rc); + + /* Create .lustre/lost+found/MDTxxxx. */ + + /* XXX: Currently, cross-MDT create operation needs to create the child + * object firstly, then insert name into the parent directory. For + * this case, the child object resides on current MDT (local), but + * the parent ".lustre/lost+found" may be on remote MDT. It is not + * easy to contain all the sub-modifications orderly within single + * transaction. + * + * To avoid more inconsistency, we split the create operation into + * two transactions: + * + * 1) create the child and update the lfsck_bookmark::lb_lpf_fid + * locally. + * 2) insert the name "MDTXXXX" in the parent ".lustre/lost+found" + * remotely. + * + * If 1) done, but 2) failed, then go ahead, the LFSCK will try to + * repair such inconsistency when LFSCK run next time. */ + + /* Transaction I: locally */ + + dev = lfsck->li_bottom; + th = dt_trans_create(env, dev); + if (IS_ERR(th)) + RETURN(PTR_ERR(th)); + + /* 1a. create child */ + rc = dt_declare_create(env, child, la, NULL, dof, th); + if (rc != 0) + GOTO(stop, rc); + + /* 2a. increase child nlink */ + rc = dt_declare_ref_add(env, child, th); + if (rc != 0) + GOTO(stop, rc); + + /* 3a. insert linkEA for child */ + linkea_buf.lb_buf = ldata.ld_buf->lb_buf; + linkea_buf.lb_len = ldata.ld_leh->leh_len; + rc = dt_declare_xattr_set(env, child, &linkea_buf, + XATTR_NAME_LINK, 0, th); + if (rc != 0) + GOTO(stop, rc); + + /* 4a. update bookmark */ + rc = dt_declare_record_write(env, bk_obj, + lfsck_buf_get(env, bk, len), 0, th); + if (rc != 0) + GOTO(stop, rc); + + rc = dt_trans_start_local(env, dev, th); + if (rc != 0) + GOTO(stop, rc); + + dt_write_lock(env, child, 0); + /* 1b.1. create child */ + rc = dt_create(env, child, la, NULL, dof, th); + if (rc != 0) + GOTO(unlock, rc); + + if (unlikely(!dt_try_as_dir(env, child))) + GOTO(unlock, rc = -ENOTDIR); + + /* 1b.2. insert dot into child dir */ + rec->rec_type = S_IFDIR; + rec->rec_fid = cfid; + rc = dt_insert(env, child, (const struct dt_rec *)rec, + (const struct dt_key *)dot, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(unlock, rc); + + /* 1b.3. insert dotdot into child dir */ + rec->rec_fid = &LU_LPF_FID; + rc = dt_insert(env, child, (const struct dt_rec *)rec, + (const struct dt_key *)dotdot, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(unlock, rc); + + /* 2b. increase child nlink */ + rc = dt_ref_add(env, child, th); + if (rc != 0) + GOTO(unlock, rc); + + /* 3b. insert linkEA for child */ + rc = dt_xattr_set(env, child, &linkea_buf, + XATTR_NAME_LINK, 0, th, BYPASS_CAPA); + if (rc != 0) + GOTO(unlock, rc); + + bk->lb_lpf_fid = *cfid; + lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk, bk); + + /* 4b. update bookmark */ + rc = dt_record_write(env, bk_obj, + lfsck_buf_get(env, bk, len), &pos, th); + + dt_write_unlock(env, child); + dt_trans_stop(env, dev, th); + if (rc != 0) + RETURN(rc); + + /* Transaction II: remotely */ + + dev = lfsck->li_next; + th = dt_trans_create(env, dev); + if (IS_ERR(th)) + RETURN(PTR_ERR(th)); + + /* 5a. insert name into parent dir */ + rec->rec_fid = cfid; + rc = dt_declare_insert(env, parent, (const struct dt_rec *)rec, + (const struct dt_key *)name, th); + if (rc != 0) + GOTO(stop, rc); + + /* 6a. increase parent nlink */ + rc = dt_declare_ref_add(env, parent, th); + if (rc != 0) + GOTO(stop, rc); + + rc = dt_trans_start(env, dev, th); + if (rc != 0) + GOTO(stop, rc); + + /* 5b. insert name into parent dir */ + rc = dt_insert(env, parent, (const struct dt_rec *)rec, + (const struct dt_key *)name, th, BYPASS_CAPA, 1); + if (rc != 0) + GOTO(stop, rc); + + dt_write_lock(env, parent, 0); + /* 6b. increase parent nlink */ + rc = dt_ref_add(env, parent, th); + dt_write_unlock(env, parent); + + GOTO(stop, rc); + +unlock: + dt_write_unlock(env, child); +stop: + dt_trans_stop(env, dev, th); + + if (rc != 0 && dev == lfsck->li_next) + CDEBUG(D_LFSCK, "%s: partially created the object "DFID + "for orphans, but failed to insert the name %s " + "to the .lustre/lost+found/. Such inconsistency " + "will be repaired when LFSCK run next time: rc = %d\n", + lfsck_lfsck2name(lfsck), PFID(cfid), name, rc); + + return rc; +} + +/* Do NOT create .lustre/lost+found/MDTxxxx when register the lfsck instance, + * because the MDT0 maybe not reaady for sequence allocation yet. We do that + * only when it is required, such as orphan OST-objects repairing. */ +int lfsck_create_lpf(const struct lu_env *env, struct lfsck_instance *lfsck) +{ + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + struct lfsck_thread_info *info = lfsck_env_info(env); + struct lu_fid *cfid = &info->lti_fid2; + struct lu_attr *la = &info->lti_la; + struct dt_object_format *dof = &info->lti_dof; + struct dt_object *parent = NULL; + struct dt_object *child = NULL; + char name[8]; + int node = lfsck_dev_idx(lfsck->li_bottom); + int rc = 0; + ENTRY; + + LASSERT(lfsck->li_master); + + sprintf(name, "MDT%04x", node); + if (node == 0) { + parent = lfsck_object_find_by_dev(env, lfsck->li_bottom, + &LU_LPF_FID); + } else { + struct lfsck_tgt_desc *ltd; + + ltd = lfsck_tgt_get(&lfsck->li_mdt_descs, 0); + if (unlikely(ltd == NULL)) + RETURN(-ENXIO); + + parent = lfsck_object_find_by_dev(env, ltd->ltd_tgt, + &LU_LPF_FID); + lfsck_tgt_put(ltd); + } + if (IS_ERR(parent)) + RETURN(PTR_ERR(parent)); + + if (unlikely(!dt_try_as_dir(env, parent))) + GOTO(out, rc = -ENOTDIR); + + mutex_lock(&lfsck->li_mutex); + if (lfsck->li_lpf_obj != NULL) + GOTO(unlock, rc = 0); + + if (fid_is_zero(&bk->lb_lpf_fid)) { + /* There is corner case that: in former LFSCK scanning we have + * created the .lustre/lost+found/MDTxxxx but failed to update + * the lfsck_bookmark::lb_lpf_fid successfully. So need lookup + * it from MDT0 firstly. */ + rc = dt_lookup(env, parent, (struct dt_rec *)cfid, + (const struct dt_key *)name, BYPASS_CAPA); + if (rc != 0 && rc != -ENOENT) + GOTO(unlock, rc); + + if (rc == 0) { + bk->lb_lpf_fid = *cfid; + rc = lfsck_bookmark_store(env, lfsck); + } else { + rc = lfsck_fid_alloc(env, lfsck, cfid, true); + } + if (rc != 0) + GOTO(unlock, rc); + } else { + *cfid = bk->lb_lpf_fid; + } + + child = lfsck_object_find_by_dev(env, lfsck->li_bottom, cfid); + if (IS_ERR(child)) + GOTO(unlock, rc = PTR_ERR(child)); + + if (dt_object_exists(child) != 0) { + if (unlikely(!dt_try_as_dir(env, child))) + rc = -ENOTDIR; + else + lfsck->li_lpf_obj = child; + + GOTO(unlock, rc); + } + + memset(la, 0, sizeof(*la)); + la->la_atime = la->la_mtime = la->la_ctime = cfs_time_current_sec(); + la->la_mode = S_IFDIR | S_IRWXU; + la->la_valid = LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | + LA_UID | LA_GID; + memset(dof, 0, sizeof(*dof)); + dof->dof_type = dt_mode_to_dft(S_IFDIR); + + if (node == 0) + rc = lfsck_create_lpf_local(env, lfsck, parent, child, la, + dof, name); + else + rc = lfsck_create_lpf_remote(env, lfsck, parent, child, la, + dof, name); + if (rc == 0) + lfsck->li_lpf_obj = child; + + GOTO(unlock, rc); + +unlock: + mutex_unlock(&lfsck->li_mutex); + if (rc != 0 && child != NULL && !IS_ERR(child)) + lu_object_put(env, &child->do_lu); +out: + if (parent != NULL && !IS_ERR(parent)) + lu_object_put(env, &parent->do_lu); + + return rc; +} + +static int lfsck_fid_init(struct lfsck_instance *lfsck) +{ + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + struct seq_server_site *ss; + char *prefix; + int rc = 0; + ENTRY; + + ss = lu_site2seq(lfsck->li_bottom->dd_lu_dev.ld_site); + if (unlikely(ss == NULL)) + RETURN(-ENXIO); + + OBD_ALLOC_PTR(lfsck->li_seq); + if (lfsck->li_seq == NULL) + RETURN(-ENOMEM); + + OBD_ALLOC(prefix, MAX_OBD_NAME + 7); + if (prefix == NULL) + GOTO(out, rc = -ENOMEM); + + snprintf(prefix, MAX_OBD_NAME + 7, "lfsck-%s", lfsck_lfsck2name(lfsck)); + rc = seq_client_init(lfsck->li_seq, NULL, LUSTRE_SEQ_METADATA, prefix, + ss->ss_server_seq); + OBD_FREE(prefix, MAX_OBD_NAME + 7); + if (rc != 0) + GOTO(out, rc); + + if (fid_is_sane(&bk->lb_last_fid)) + lfsck->li_seq->lcs_fid = bk->lb_last_fid; + + RETURN(0); + +out: + OBD_FREE_PTR(lfsck->li_seq); + lfsck->li_seq = NULL; + + return rc; +} + +static void lfsck_fid_fini(struct lfsck_instance *lfsck) +{ + if (lfsck->li_seq != NULL) { + seq_client_fini(lfsck->li_seq); + OBD_FREE_PTR(lfsck->li_seq); + lfsck->li_seq = NULL; + } +} + +void lfsck_instance_cleanup(const struct lu_env *env, + struct lfsck_instance *lfsck) { struct ptlrpc_thread *thread = &lfsck->li_thread; struct lfsck_component *com; @@ -191,51 +882,60 @@ static void lfsck_instance_cleanup(const struct lu_env *env, lfsck_component_cleanup(env, com); } + lfsck_tgt_descs_fini(&lfsck->li_ost_descs); + lfsck_tgt_descs_fini(&lfsck->li_mdt_descs); + if (lfsck->li_bookmark_obj != NULL) { lu_object_put_nocache(env, &lfsck->li_bookmark_obj->do_lu); lfsck->li_bookmark_obj = NULL; } + if (lfsck->li_lpf_obj != NULL) { + lu_object_put(env, &lfsck->li_lpf_obj->do_lu); + lfsck->li_lpf_obj = NULL; + } + if (lfsck->li_los != NULL) { local_oid_storage_fini(env, lfsck->li_los); lfsck->li_los = NULL; } - OBD_FREE_PTR(lfsck); -} + lfsck_fid_fini(lfsck); -static inline void lfsck_instance_get(struct lfsck_instance *lfsck) -{ - atomic_inc(&lfsck->li_ref); -} - -static inline void lfsck_instance_put(const struct lu_env *env, - struct lfsck_instance *lfsck) -{ - if (atomic_dec_and_test(&lfsck->li_ref)) - lfsck_instance_cleanup(env, lfsck); + OBD_FREE_PTR(lfsck); } -static inline struct lfsck_instance *lfsck_instance_find(struct dt_device *key, - bool ref, bool unlink) +static inline struct lfsck_instance * +__lfsck_instance_find(struct dt_device *key, bool ref, bool unlink) { struct lfsck_instance *lfsck; - spin_lock(&lfsck_instance_lock); cfs_list_for_each_entry(lfsck, &lfsck_instance_list, li_link) { if (lfsck->li_bottom == key) { if (ref) lfsck_instance_get(lfsck); if (unlink) list_del_init(&lfsck->li_link); - spin_unlock(&lfsck_instance_lock); + return lfsck; } } - spin_unlock(&lfsck_instance_lock); + return NULL; } +struct lfsck_instance *lfsck_instance_find(struct dt_device *key, bool ref, + bool unlink) +{ + struct lfsck_instance *lfsck; + + spin_lock(&lfsck_instance_lock); + lfsck = __lfsck_instance_find(key, ref, unlink); + spin_unlock(&lfsck_instance_lock); + + return lfsck; +} + static inline int lfsck_instance_add(struct lfsck_instance *lfsck) { struct lfsck_instance *tmp; @@ -253,75 +953,59 @@ static inline int lfsck_instance_add(struct lfsck_instance *lfsck) return 0; } -int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[], +int lfsck_bits_dump(struct seq_file *m, int bits, const char *names[], const char *prefix) { - int save = *len; int flag; - int rc; int i; + bool newline = (bits != 0 ? false : true); - rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n'); - if (rc <= 0) - return -ENOSPC; + seq_printf(m, "%s:%c", prefix, bits != 0 ? ' ' : '\n'); - *buf += rc; - *len -= rc; for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) { if (flag & bits) { bits &= ~flag; - rc = snprintf(*buf, *len, "%s%c", names[i], - bits != 0 ? ',' : '\n'); - if (rc <= 0) - return -ENOSPC; + if (names[i] != NULL) { + if (bits == 0) + newline = true; - *buf += rc; - *len -= rc; + seq_printf(m, "%s%c", names[i], + newline ? '\n' : ','); + } } } - return save - *len; + + if (!newline) + seq_printf(m, "\n"); + return 0; } -int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix) +int lfsck_time_dump(struct seq_file *m, __u64 time, const char *prefix) { - int rc; - if (time != 0) - rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix, - cfs_time_current_sec() - time); + seq_printf(m, "%s: "LPU64" seconds\n", prefix, + cfs_time_current_sec() - time); else - rc = snprintf(*buf, *len, "%s: N/A\n", prefix); - if (rc <= 0) - return -ENOSPC; - - *buf += rc; - *len -= rc; - return rc; + seq_printf(m, "%s: N/A\n", prefix); + return 0; } -int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos, +int lfsck_pos_dump(struct seq_file *m, struct lfsck_position *pos, const char *prefix) { - int rc; - if (fid_is_zero(&pos->lp_dir_parent)) { if (pos->lp_oit_cookie == 0) - rc = snprintf(*buf, *len, "%s: N/A, N/A, N/A\n", - prefix); + seq_printf(m, "%s: N/A, N/A, N/A\n", + prefix); else - rc = snprintf(*buf, *len, "%s: "LPU64", N/A, N/A\n", - prefix, pos->lp_oit_cookie); + seq_printf(m, "%s: "LPU64", N/A, N/A\n", + prefix, pos->lp_oit_cookie); } else { - rc = snprintf(*buf, *len, "%s: "LPU64", "DFID", "LPU64"\n", - prefix, pos->lp_oit_cookie, - PFID(&pos->lp_dir_parent), pos->lp_dir_cookie); + seq_printf(m, "%s: "LPU64", "DFID", "LPX64"\n", + prefix, pos->lp_oit_cookie, + PFID(&pos->lp_dir_parent), pos->lp_dir_cookie); } - if (rc <= 0) - return -ENOSPC; - - *buf += rc; - *len -= rc; - return rc; + return 0; } void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck, @@ -350,7 +1034,7 @@ void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck, fid_zero(&pos->lp_dir_parent); pos->lp_dir_cookie = 0; } else { - pos->lp_dir_parent = *lu_object_fid(&dto->do_lu); + pos->lp_dir_parent = *lfsck_dto2fid(dto); } } else { fid_zero(&pos->lp_dir_parent); @@ -358,9 +1042,10 @@ void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck, } } -static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit) +bool __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit) { - lfsck->li_bookmark_ram.lb_speed_limit = limit; + bool dirty = false; + if (limit != LFSCK_SPEED_NO_LIMIT) { if (limit > HZ) { lfsck->li_sleep_rate = limit / HZ; @@ -373,6 +1058,13 @@ static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit) lfsck->li_sleep_jif = 0; lfsck->li_sleep_rate = 0; } + + if (lfsck->li_bookmark_ram.lb_speed_limit != limit) { + lfsck->li_bookmark_ram.lb_speed_limit = limit; + dirty = true; + } + + return dirty; } void lfsck_control_speed(struct lfsck_instance *lfsck) @@ -382,20 +1074,31 @@ void lfsck_control_speed(struct lfsck_instance *lfsck) if (lfsck->li_sleep_jif > 0 && lfsck->li_new_scanned >= lfsck->li_sleep_rate) { - spin_lock(&lfsck->li_lock); - if (likely(lfsck->li_sleep_jif > 0 && - lfsck->li_new_scanned >= lfsck->li_sleep_rate)) { - lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL, - LWI_ON_SIGNAL_NOOP, NULL); - spin_unlock(&lfsck->li_lock); + lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL, + LWI_ON_SIGNAL_NOOP, NULL); - l_wait_event(thread->t_ctl_waitq, - !thread_is_running(thread), - &lwi); - lfsck->li_new_scanned = 0; - } else { - spin_unlock(&lfsck->li_lock); - } + l_wait_event(thread->t_ctl_waitq, + !thread_is_running(thread), + &lwi); + lfsck->li_new_scanned = 0; + } +} + +void lfsck_control_speed_by_self(struct lfsck_component *com) +{ + struct lfsck_instance *lfsck = com->lc_lfsck; + struct ptlrpc_thread *thread = &lfsck->li_thread; + struct l_wait_info lwi; + + if (lfsck->li_sleep_jif > 0 && + com->lc_new_scanned >= lfsck->li_sleep_rate) { + lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL, + LWI_ON_SIGNAL_NOOP, NULL); + + l_wait_event(thread->t_ctl_waitq, + !thread_is_running(thread), + &lwi); + com->lc_new_scanned = 0; } } @@ -434,8 +1137,8 @@ static int lfsck_needs_scan_dir(const struct lu_env *env, return 1; } - /* .lustre doesn't contain "real" user objects, no need lfsck */ - if (fid_is_dot_lustre(lfsck_dto2fid(obj))) { + /* No need to check .lustre and its children. */ + if (fid_seq_is_dot_lustre(fid_seq(lfsck_dto2fid(obj)))) { if (depth > 0) lfsck_object_put(env, obj); return 0; @@ -485,10 +1188,16 @@ static int lfsck_needs_scan_dir(const struct lu_env *env, return 0; } - /* Currently, only client visible directory can be remote. */ if (dt_object_remote(obj)) { + /* .lustre/lost+found/MDTxxx can be remote directory. */ + if (fid_seq_is_dot_lustre(fid_seq(lfsck_dto2fid(obj)))) + rc = 0; + else + /* Other remote directory should be client + * visible and need to be checked. */ + rc = 1; lfsck_object_put(env, obj); - return 1; + return rc; } depth++; @@ -496,6 +1205,41 @@ static int lfsck_needs_scan_dir(const struct lu_env *env, return 0; } +struct lfsck_thread_args *lfsck_thread_args_init(struct lfsck_instance *lfsck, + struct lfsck_component *com, + struct lfsck_start_param *lsp) +{ + struct lfsck_thread_args *lta; + int rc; + + OBD_ALLOC_PTR(lta); + if (lta == NULL) + return ERR_PTR(-ENOMEM); + + rc = lu_env_init(<a->lta_env, LCT_MD_THREAD | LCT_DT_THREAD); + if (rc != 0) { + OBD_FREE_PTR(lta); + return ERR_PTR(rc); + } + + lta->lta_lfsck = lfsck_instance_get(lfsck); + if (com != NULL) + lta->lta_com = lfsck_component_get(com); + + lta->lta_lsp = lsp; + + return lta; +} + +void lfsck_thread_args_fini(struct lfsck_thread_args *lta) +{ + if (lta->lta_com != NULL) + lfsck_component_put(<a->lta_env, lta->lta_com); + lfsck_instance_put(<a->lta_env, lta->lta_lfsck); + lu_env_fini(<a->lta_env); + OBD_FREE_PTR(lta); +} + /* LFSCK wrap functions */ void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck, @@ -511,7 +1255,8 @@ void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck, int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck) { struct lfsck_component *com; - int rc; + int rc = 0; + int rc1 = 0; if (likely(cfs_time_beforeq(cfs_time_current(), lfsck->li_time_next_checkpoint))) @@ -521,16 +1266,17 @@ int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck) cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) { rc = com->lc_ops->lfsck_checkpoint(env, com, false); if (rc != 0) - return rc;; + rc1 = rc; } lfsck->li_time_last_checkpoint = cfs_time_current(); lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint + cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL); - return 0; + return rc1 != 0 ? rc1 : rc; } -int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck) +int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck, + struct lfsck_start_param *lsp) { struct dt_object *obj = NULL; struct lfsck_component *com; @@ -551,9 +1297,9 @@ int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck) if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN) com->lc_journal = 0; - rc = com->lc_ops->lfsck_prep(env, com); + rc = com->lc_ops->lfsck_prep(env, com, lsp); if (rc != 0) - RETURN(rc); + GOTO(out, rc); if ((pos == NULL) || (!lfsck_pos_is_zero(&com->lc_pos_start) && @@ -725,64 +1471,248 @@ int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck, { struct lfsck_component *com; struct lfsck_component *next; - int rc; + int rc = 0; + int rc1 = 0; lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false); cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) { rc = com->lc_ops->lfsck_post(env, com, result, false); if (rc != 0) - return rc; + rc1 = rc; } lfsck->li_time_last_checkpoint = cfs_time_current(); lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint + cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL); + + /* Ignore some component post failure to make other can go ahead. */ return result; } +static void lfsck_interpret(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct ptlrpc_request *req, void *args, int result) +{ + struct lfsck_async_interpret_args *laia = args; + struct lfsck_component *com; + + LASSERT(laia->laia_com == NULL); + LASSERT(laia->laia_shared); + + spin_lock(&lfsck->li_lock); + list_for_each_entry(com, &lfsck->li_list_scan, lc_link) { + if (com->lc_ops->lfsck_interpret != NULL) { + laia->laia_com = com; + com->lc_ops->lfsck_interpret(env, req, laia, result); + } + } + + list_for_each_entry(com, &lfsck->li_list_double_scan, lc_link) { + if (com->lc_ops->lfsck_interpret != NULL) { + laia->laia_com = com; + com->lc_ops->lfsck_interpret(env, req, laia, result); + } + } + spin_unlock(&lfsck->li_lock); +} + int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck) { struct lfsck_component *com; struct lfsck_component *next; - int rc; + struct l_wait_info lwi = { 0 }; + int rc = 0; + int rc1 = 0; - cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan, - lc_link) { + list_for_each_entry(com, &lfsck->li_list_double_scan, lc_link) { if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN) com->lc_journal = 0; rc = com->lc_ops->lfsck_double_scan(env, com); if (rc != 0) - return rc; + rc1 = rc; + } + + l_wait_event(lfsck->li_thread.t_ctl_waitq, + atomic_read(&lfsck->li_double_scan_count) == 0, + &lwi); + + if (lfsck->li_status != LS_PAUSED && + lfsck->li_status != LS_CO_PAUSED) { + list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan, + lc_link) { + spin_lock(&lfsck->li_lock); + list_del_init(&com->lc_link); + list_add_tail(&com->lc_link, &lfsck->li_list_idle); + spin_unlock(&lfsck->li_lock); + } + } + + return rc1 != 0 ? rc1 : rc; +} + +static int lfsck_stop_notify(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct lfsck_tgt_descs *ltds, + struct lfsck_tgt_desc *ltd, __u16 type) +{ + struct ptlrpc_request_set *set; + struct lfsck_component *com; + int rc = 0; + ENTRY; + + spin_lock(&lfsck->li_lock); + com = __lfsck_component_find(lfsck, type, &lfsck->li_list_scan); + if (com == NULL) + com = __lfsck_component_find(lfsck, type, + &lfsck->li_list_double_scan); + if (com != NULL) + lfsck_component_get(com); + spin_lock(&lfsck->li_lock); + + if (com != NULL) { + if (com->lc_ops->lfsck_stop_notify != NULL) { + set = ptlrpc_prep_set(); + if (set == NULL) { + lfsck_component_put(env, com); + + RETURN(-ENOMEM); + } + + rc = com->lc_ops->lfsck_stop_notify(env, com, ltds, + ltd, set); + if (rc == 0) + rc = ptlrpc_set_wait(set); + + ptlrpc_set_destroy(set); + } + + lfsck_component_put(env, com); + } + + RETURN(rc); +} + +void lfsck_quit(const struct lu_env *env, struct lfsck_instance *lfsck) +{ + struct lfsck_component *com; + struct lfsck_component *next; + + list_for_each_entry_safe(com, next, &lfsck->li_list_scan, + lc_link) { + if (com->lc_ops->lfsck_quit != NULL) + com->lc_ops->lfsck_quit(env, com); + + spin_lock(&lfsck->li_lock); + list_del_init(&com->lc_link); + list_del_init(&com->lc_link_dir); + list_add_tail(&com->lc_link, &lfsck->li_list_idle); + spin_unlock(&lfsck->li_lock); + } + + list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan, + lc_link) { + if (com->lc_ops->lfsck_quit != NULL) + com->lc_ops->lfsck_quit(env, com); + + spin_lock(&lfsck->li_lock); + list_del_init(&com->lc_link); + list_add_tail(&com->lc_link, &lfsck->li_list_idle); + spin_unlock(&lfsck->li_lock); + } +} + +static int lfsck_async_interpret(const struct lu_env *env, + struct ptlrpc_request *req, + void *args, int rc) +{ + struct lfsck_async_interpret_args *laia = args; + struct lfsck_instance *lfsck; + + lfsck = container_of0(laia->laia_ltds, struct lfsck_instance, + li_mdt_descs); + lfsck_interpret(env, lfsck, req, laia, rc); + lfsck_tgt_put(laia->laia_ltd); + if (rc != 0 && laia->laia_result != -EALREADY) + laia->laia_result = rc; + + return 0; +} + +int lfsck_async_request(const struct lu_env *env, struct obd_export *exp, + struct lfsck_request *lr, + struct ptlrpc_request_set *set, + ptlrpc_interpterer_t interpreter, + void *args, int request) +{ + struct lfsck_async_interpret_args *laia; + struct ptlrpc_request *req; + struct lfsck_request *tmp; + struct req_format *format; + int rc; + + switch (request) { + case LFSCK_NOTIFY: + format = &RQF_LFSCK_NOTIFY; + break; + case LFSCK_QUERY: + format = &RQF_LFSCK_QUERY; + break; + default: + CDEBUG(D_LFSCK, "%s: unknown async request %d: rc = %d\n", + exp->exp_obd->obd_name, request, -EINVAL); + return -EINVAL; + } + + req = ptlrpc_request_alloc(class_exp2cliimp(exp), format); + if (req == NULL) + return -ENOMEM; + + rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, request); + if (rc != 0) { + ptlrpc_request_free(req); + + return rc; } + + tmp = req_capsule_client_get(&req->rq_pill, &RMF_LFSCK_REQUEST); + *tmp = *lr; + ptlrpc_request_set_replen(req); + + laia = ptlrpc_req_async_args(req); + *laia = *(struct lfsck_async_interpret_args *)args; + if (laia->laia_com != NULL) + lfsck_component_get(laia->laia_com); + req->rq_interpret_reply = interpreter; + ptlrpc_set_add_req(set, req); + return 0; } /* external interfaces */ -int lfsck_get_speed(struct dt_device *key, void *buf, int len) +int lfsck_get_speed(struct seq_file *m, struct dt_device *key) { struct lu_env env; struct lfsck_instance *lfsck; int rc; ENTRY; - lfsck = lfsck_instance_find(key, true, false); - if (unlikely(lfsck == NULL)) - RETURN(-ENODEV); - rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD); if (rc != 0) - GOTO(out, rc); + RETURN(rc); - rc = snprintf(buf, len, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit); - lu_env_fini(&env); + lfsck = lfsck_instance_find(key, true, false); + if (likely(lfsck != NULL)) { + seq_printf(m, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit); + lfsck_instance_put(&env, lfsck); + } else { + rc = -ENXIO; + } - GOTO(out, rc); + lu_env_fini(&env); -out: - lfsck_instance_put(&env, lfsck); - return rc; + RETURN(rc); } EXPORT_SYMBOL(lfsck_get_speed); @@ -793,79 +1723,305 @@ int lfsck_set_speed(struct dt_device *key, int val) int rc; ENTRY; + rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD); + if (rc != 0) + RETURN(rc); + lfsck = lfsck_instance_find(key, true, false); - if (unlikely(lfsck == NULL)) - RETURN(-ENODEV); + if (likely(lfsck != NULL)) { + mutex_lock(&lfsck->li_mutex); + if (__lfsck_set_speed(lfsck, val)) + rc = lfsck_bookmark_store(&env, lfsck); + mutex_unlock(&lfsck->li_mutex); + lfsck_instance_put(&env, lfsck); + } else { + rc = -ENXIO; + } + + lu_env_fini(&env); + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_set_speed); + +int lfsck_get_windows(struct seq_file *m, struct dt_device *key) +{ + struct lu_env env; + struct lfsck_instance *lfsck; + int rc; + ENTRY; rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD); if (rc != 0) - GOTO(out, rc); + RETURN(rc); - mutex_lock(&lfsck->li_mutex); - __lfsck_set_speed(lfsck, val); - rc = lfsck_bookmark_store(&env, lfsck); - mutex_unlock(&lfsck->li_mutex); - lu_env_fini(&env); + lfsck = lfsck_instance_find(key, true, false); + if (likely(lfsck != NULL)) { + seq_printf(m, "%u\n", lfsck->li_bookmark_ram.lb_async_windows); + lfsck_instance_put(&env, lfsck); + } else { + rc = -ENXIO; + } - GOTO(out, rc); + lu_env_fini(&env); -out: - lfsck_instance_put(&env, lfsck); - return rc; + RETURN(rc); } -EXPORT_SYMBOL(lfsck_set_speed); +EXPORT_SYMBOL(lfsck_get_windows); -int lfsck_dump(struct dt_device *key, void *buf, int len, __u16 type) +int lfsck_set_windows(struct dt_device *key, int val) { struct lu_env env; struct lfsck_instance *lfsck; - struct lfsck_component *com = NULL; int rc; ENTRY; + rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD); + if (rc != 0) + RETURN(rc); + lfsck = lfsck_instance_find(key, true, false); - if (unlikely(lfsck == NULL)) - RETURN(-ENODEV); + if (likely(lfsck != NULL)) { + if (val > LFSCK_ASYNC_WIN_MAX) { + CWARN("%s: Too large async window size, which " + "may cause memory issues. The valid range " + "is [0 - %u]. If you do not want to restrict " + "the window size for async requests pipeline, " + "just set it as 0.\n", + lfsck_lfsck2name(lfsck), LFSCK_ASYNC_WIN_MAX); + rc = -EINVAL; + } else if (lfsck->li_bookmark_ram.lb_async_windows != val) { + mutex_lock(&lfsck->li_mutex); + lfsck->li_bookmark_ram.lb_async_windows = val; + rc = lfsck_bookmark_store(&env, lfsck); + mutex_unlock(&lfsck->li_mutex); + } + lfsck_instance_put(&env, lfsck); + } else { + rc = -ENXIO; + } - com = lfsck_component_find(lfsck, type); - if (com == NULL) - GOTO(out, rc = -ENOTSUPP); + lu_env_fini(&env); + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_set_windows); + +int lfsck_dump(struct seq_file *m, struct dt_device *key, enum lfsck_type type) +{ + struct lu_env env; + struct lfsck_instance *lfsck; + struct lfsck_component *com; + int rc; + ENTRY; rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD); if (rc != 0) - GOTO(out, rc); + RETURN(rc); + + lfsck = lfsck_instance_find(key, true, false); + if (likely(lfsck != NULL)) { + com = lfsck_component_find(lfsck, type); + if (likely(com != NULL)) { + rc = com->lc_ops->lfsck_dump(&env, com, m); + lfsck_component_put(&env, com); + } else { + rc = -ENOTSUPP; + } + + lfsck_instance_put(&env, lfsck); + } else { + rc = -ENXIO; + } + + lu_env_fini(&env); + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_dump); + +static int lfsck_stop_all(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct lfsck_stop *stop) +{ + struct lfsck_thread_info *info = lfsck_env_info(env); + struct lfsck_request *lr = &info->lti_lr; + struct lfsck_async_interpret_args *laia = &info->lti_laia; + struct ptlrpc_request_set *set; + struct lfsck_tgt_descs *ltds = &lfsck->li_mdt_descs; + struct lfsck_tgt_desc *ltd; + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + __u32 idx; + int rc = 0; + int rc1 = 0; + ENTRY; + + LASSERT(stop->ls_flags & LPF_BROADCAST); + + set = ptlrpc_prep_set(); + if (unlikely(set == NULL)) + RETURN(-ENOMEM); + + memset(lr, 0, sizeof(*lr)); + lr->lr_event = LE_STOP; + lr->lr_index = lfsck_dev_idx(lfsck->li_bottom); + lr->lr_status = stop->ls_status; + lr->lr_version = bk->lb_version; + lr->lr_active = LFSCK_TYPES_ALL; + lr->lr_param = stop->ls_flags; + + laia->laia_com = NULL; + laia->laia_ltds = ltds; + laia->laia_lr = lr; + laia->laia_result = 0; + laia->laia_shared = 1; + + down_read(<ds->ltd_rw_sem); + cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) { + ltd = lfsck_tgt_get(ltds, idx); + LASSERT(ltd != NULL); + + laia->laia_ltd = ltd; + rc = lfsck_async_request(env, ltd->ltd_exp, lr, set, + lfsck_async_interpret, laia, + LFSCK_NOTIFY); + if (rc != 0) { + lfsck_interpret(env, lfsck, NULL, laia, rc); + lfsck_tgt_put(ltd); + CERROR("%s: cannot notify MDT %x for LFSCK stop: " + "rc = %d\n", lfsck_lfsck2name(lfsck), idx, rc); + rc1 = rc; + } + } + up_read(<ds->ltd_rw_sem); + + rc = ptlrpc_set_wait(set); + ptlrpc_set_destroy(set); + + if (rc == 0) + rc = laia->laia_result; + + if (rc == -EALREADY) + rc = 0; + + if (rc != 0) + CERROR("%s: fail to stop LFSCK on some MDTs: rc = %d\n", + lfsck_lfsck2name(lfsck), rc); + + RETURN(rc != 0 ? rc : rc1); +} + +static int lfsck_start_all(const struct lu_env *env, + struct lfsck_instance *lfsck, + struct lfsck_start *start) +{ + struct lfsck_thread_info *info = lfsck_env_info(env); + struct lfsck_request *lr = &info->lti_lr; + struct lfsck_async_interpret_args *laia = &info->lti_laia; + struct ptlrpc_request_set *set; + struct lfsck_tgt_descs *ltds = &lfsck->li_mdt_descs; + struct lfsck_tgt_desc *ltd; + struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram; + __u32 idx; + int rc = 0; + ENTRY; + + LASSERT(start->ls_flags & LPF_BROADCAST); + + set = ptlrpc_prep_set(); + if (unlikely(set == NULL)) + RETURN(-ENOMEM); + + memset(lr, 0, sizeof(*lr)); + lr->lr_event = LE_START; + lr->lr_index = lfsck_dev_idx(lfsck->li_bottom); + lr->lr_speed = bk->lb_speed_limit; + lr->lr_version = bk->lb_version; + lr->lr_active = start->ls_active; + lr->lr_param = start->ls_flags; + lr->lr_async_windows = bk->lb_async_windows; + lr->lr_valid = LSV_SPEED_LIMIT | LSV_ERROR_HANDLE | LSV_DRYRUN | + LSV_ASYNC_WINDOWS; + + laia->laia_com = NULL; + laia->laia_ltds = ltds; + laia->laia_lr = lr; + laia->laia_result = 0; + laia->laia_shared = 1; + + down_read(<ds->ltd_rw_sem); + cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) { + ltd = lfsck_tgt_get(ltds, idx); + LASSERT(ltd != NULL); + + laia->laia_ltd = ltd; + ltd->ltd_layout_done = 0; + rc = lfsck_async_request(env, ltd->ltd_exp, lr, set, + lfsck_async_interpret, laia, + LFSCK_NOTIFY); + if (rc != 0) { + lfsck_interpret(env, lfsck, NULL, laia, rc); + lfsck_tgt_put(ltd); + CERROR("%s: cannot notify MDT %x for LFSCK " + "start, failout: rc = %d\n", + lfsck_lfsck2name(lfsck), idx, rc); + break; + } + } + up_read(<ds->ltd_rw_sem); + + if (rc != 0) { + ptlrpc_set_destroy(set); + + RETURN(rc); + } + + rc = ptlrpc_set_wait(set); + ptlrpc_set_destroy(set); + + if (rc == 0) + rc = laia->laia_result; - rc = com->lc_ops->lfsck_dump(&env, com, buf, len); - lu_env_fini(&env); + if (rc != 0) { + struct lfsck_stop *stop = &info->lti_stop; - GOTO(out, rc); + CERROR("%s: cannot start LFSCK on some MDTs, " + "stop all: rc = %d\n", + lfsck_lfsck2name(lfsck), rc); + if (rc != -EALREADY) { + stop->ls_status = LS_FAILED; + stop->ls_flags = LPF_ALL_TGT | LPF_BROADCAST; + lfsck_stop_all(env, lfsck, stop); + } + } -out: - if (com != NULL) - lfsck_component_put(&env, com); - lfsck_instance_put(&env, lfsck); - return rc; + RETURN(rc); } -EXPORT_SYMBOL(lfsck_dump); int lfsck_start(const struct lu_env *env, struct dt_device *key, struct lfsck_start_param *lsp) { - struct lfsck_start *start = lsp->lsp_start; - struct lfsck_instance *lfsck; - struct lfsck_bookmark *bk; - struct ptlrpc_thread *thread; - struct lfsck_component *com; - struct l_wait_info lwi = { 0 }; - bool dirty = false; - long rc = 0; - __u16 valid = 0; - __u16 flags = 0; + struct lfsck_start *start = lsp->lsp_start; + struct lfsck_instance *lfsck; + struct lfsck_bookmark *bk; + struct ptlrpc_thread *thread; + struct lfsck_component *com; + struct l_wait_info lwi = { 0 }; + struct lfsck_thread_args *lta; + struct task_struct *task; + int rc = 0; + __u16 valid = 0; + __u16 flags = 0; + __u16 type = 1; ENTRY; lfsck = lfsck_instance_find(key, true, false); if (unlikely(lfsck == NULL)) - RETURN(-ENODEV); + RETURN(-ENXIO); + + /* System is not ready, try again later. */ + if (unlikely(lfsck->li_namespace == NULL)) + GOTO(put, rc = -EAGAIN); /* start == NULL means auto trigger paused LFSCK. */ if ((start == NULL) && @@ -878,15 +2034,44 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, mutex_lock(&lfsck->li_mutex); spin_lock(&lfsck->li_lock); if (!thread_is_init(thread) && !thread_is_stopped(thread)) { + rc = -EALREADY; + if (unlikely(start == NULL)) { + spin_unlock(&lfsck->li_lock); + GOTO(out, rc); + } + + while (start->ls_active != 0) { + if (!(type & start->ls_active)) { + type <<= 1; + continue; + } + + com = __lfsck_component_find(lfsck, type, + &lfsck->li_list_scan); + if (com == NULL) + com = __lfsck_component_find(lfsck, type, + &lfsck->li_list_double_scan); + if (com == NULL) { + rc = -EOPNOTSUPP; + break; + } + + if (com->lc_ops->lfsck_join != NULL) { + rc = com->lc_ops->lfsck_join( env, com, lsp); + if (rc != 0 && rc != -EALREADY) + break; + } + start->ls_active &= ~type; + type <<= 1; + } spin_unlock(&lfsck->li_lock); - GOTO(out, rc = -EALREADY); + GOTO(out, rc); } - spin_unlock(&lfsck->li_lock); - lfsck->li_namespace = lsp->lsp_namespace; - lfsck->li_paused = 0; + lfsck->li_status = 0; lfsck->li_oit_over = 0; + lfsck->li_start_unplug = 0; lfsck->li_drop_dryrun = 0; lfsck->li_new_scanned = 0; @@ -894,57 +2079,17 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, if (start == NULL) goto trigger; - start->ls_version = bk->lb_version; - if (start->ls_valid & LSV_SPEED_LIMIT) { - __lfsck_set_speed(lfsck, start->ls_speed_limit); - dirty = true; - } - - if (start->ls_valid & LSV_ERROR_HANDLE) { - valid |= DOIV_ERROR_HANDLE; - if (start->ls_flags & LPF_FAILOUT) - flags |= DOIF_FAILOUT; - - if ((start->ls_flags & LPF_FAILOUT) && - !(bk->lb_param & LPF_FAILOUT)) { - bk->lb_param |= LPF_FAILOUT; - dirty = true; - } else if (!(start->ls_flags & LPF_FAILOUT) && - (bk->lb_param & LPF_FAILOUT)) { - bk->lb_param &= ~LPF_FAILOUT; - dirty = true; - } - } - - if (start->ls_valid & LSV_DRYRUN) { - valid |= DOIV_DRYRUN; - if (start->ls_flags & LPF_DRYRUN) - flags |= DOIF_DRYRUN; - - if ((start->ls_flags & LPF_DRYRUN) && - !(bk->lb_param & LPF_DRYRUN)) { - bk->lb_param |= LPF_DRYRUN; - dirty = true; - } else if (!(start->ls_flags & LPF_DRYRUN) && - (bk->lb_param & LPF_DRYRUN)) { - bk->lb_param &= ~LPF_DRYRUN; - lfsck->li_drop_dryrun = 1; - dirty = true; - } - } + if (start->ls_flags & LPF_BROADCAST && !lfsck->li_master) { + CERROR("%s: only allow to specify '-A | -o' via MDS\n", + lfsck_lfsck2name(lfsck)); - if (dirty) { - rc = lfsck_bookmark_store(env, lfsck); - if (rc != 0) - GOTO(out, rc); + GOTO(out, rc = -EPERM); } - if (start->ls_flags & LPF_RESET) - flags |= DOIF_RESET; + start->ls_version = bk->lb_version; if (start->ls_active != 0) { struct lfsck_component *next; - __u16 type = 1; if (start->ls_active == LFSCK_TYPES_ALL) start->ls_active = LFSCK_TYPES_SUPPORTED; @@ -954,8 +2099,8 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, GOTO(out, rc = -ENOTSUPP); } - cfs_list_for_each_entry_safe(com, next, - &lfsck->li_list_scan, lc_link) { + list_for_each_entry_safe(com, next, + &lfsck->li_list_scan, lc_link) { if (!(com->lc_type & start->ls_active)) { rc = com->lc_ops->lfsck_post(env, com, 0, false); @@ -972,9 +2117,9 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, /* The component status will be updated * when its prep() is called later by * the LFSCK main engine. */ - cfs_list_del_init(&com->lc_link); - cfs_list_add_tail(&com->lc_link, - &lfsck->li_list_scan); + list_del_init(&com->lc_link); + list_add_tail(&com->lc_link, + &lfsck->li_list_scan); } start->ls_active &= ~type; } @@ -982,7 +2127,28 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, } } - cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) { + if (list_empty(&lfsck->li_list_scan)) { + /* The speed limit will be used to control both the LFSCK and + * low layer scrub (if applied), need to be handled firstly. */ + if (start->ls_valid & LSV_SPEED_LIMIT) { + if (__lfsck_set_speed(lfsck, start->ls_speed_limit)) { + rc = lfsck_bookmark_store(env, lfsck); + if (rc != 0) + GOTO(out, rc); + } + } + + goto trigger; + } + + if (start->ls_flags & LPF_RESET) + flags |= DOIF_RESET; + + rc = lfsck_set_param(env, lfsck, start, !!(flags & DOIF_RESET)); + if (rc != 0) + GOTO(out, rc); + + list_for_each_entry(com, &lfsck->li_list_scan, lc_link) { start->ls_active |= com->lc_type; if (flags & DOIF_RESET) { rc = com->lc_ops->lfsck_reset(env, com, false); @@ -993,67 +2159,131 @@ int lfsck_start(const struct lu_env *env, struct dt_device *key, trigger: lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY; - if (bk->lb_param & LPF_DRYRUN) { + if (bk->lb_param & LPF_DRYRUN) lfsck->li_args_dir |= LUDA_VERIFY_DRYRUN; - valid |= DOIV_DRYRUN; - flags |= DOIF_DRYRUN; - } - if (bk->lb_param & LPF_FAILOUT) { + if (start != NULL && start->ls_valid & LSV_ERROR_HANDLE) { valid |= DOIV_ERROR_HANDLE; - flags |= DOIF_FAILOUT; + if (start->ls_flags & LPF_FAILOUT) + flags |= DOIF_FAILOUT; + } + + if (start != NULL && start->ls_valid & LSV_DRYRUN) { + valid |= DOIV_DRYRUN; + if (start->ls_flags & LPF_DRYRUN) + flags |= DOIF_DRYRUN; } - if (!cfs_list_empty(&lfsck->li_list_scan)) + if (!list_empty(&lfsck->li_list_scan)) flags |= DOIF_OUTUSED; lfsck->li_args_oit = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid; thread_set_flags(thread, 0); - rc = PTR_ERR(kthread_run(lfsck_master_engine, lfsck, "lfsck")); - if (IS_ERR_VALUE(rc)) { - CERROR("%s: cannot start LFSCK thread, rc = %ld\n", + lta = lfsck_thread_args_init(lfsck, NULL, lsp); + if (IS_ERR(lta)) + GOTO(out, rc = PTR_ERR(lta)); + + __lfsck_set_speed(lfsck, bk->lb_speed_limit); + task = kthread_run(lfsck_master_engine, lta, "lfsck"); + if (IS_ERR(task)) { + rc = PTR_ERR(task); + CERROR("%s: cannot start LFSCK thread: rc = %d\n", lfsck_lfsck2name(lfsck), rc); + lfsck_thread_args_fini(lta); + + GOTO(out, rc); + } + + l_wait_event(thread->t_ctl_waitq, + thread_is_running(thread) || + thread_is_stopped(thread), + &lwi); + if (start == NULL || !(start->ls_flags & LPF_BROADCAST)) { + lfsck->li_start_unplug = 1; + wake_up_all(&thread->t_ctl_waitq); + + GOTO(out, rc = 0); + } + + /* release lfsck::li_mutex to avoid deadlock. */ + mutex_unlock(&lfsck->li_mutex); + rc = lfsck_start_all(env, lfsck, start); + if (rc != 0) { + spin_lock(&lfsck->li_lock); + if (thread_is_stopped(thread)) { + spin_unlock(&lfsck->li_lock); + } else { + lfsck->li_status = LS_FAILED; + lfsck->li_flags = 0; + thread_set_flags(thread, SVC_STOPPING); + spin_unlock(&lfsck->li_lock); + + lfsck->li_start_unplug = 1; + wake_up_all(&thread->t_ctl_waitq); + l_wait_event(thread->t_ctl_waitq, + thread_is_stopped(thread), + &lwi); + } } else { - rc = 0; - l_wait_event(thread->t_ctl_waitq, - thread_is_running(thread) || - thread_is_stopped(thread), - &lwi); + lfsck->li_start_unplug = 1; + wake_up_all(&thread->t_ctl_waitq); } - GOTO(out, rc); + GOTO(put, rc); out: mutex_unlock(&lfsck->li_mutex); + put: lfsck_instance_put(env, lfsck); - return (rc < 0 ? rc : 0); + + return rc < 0 ? rc : 0; } EXPORT_SYMBOL(lfsck_start); -int lfsck_stop(const struct lu_env *env, struct dt_device *key, bool pause) +int lfsck_stop(const struct lu_env *env, struct dt_device *key, + struct lfsck_stop *stop) { struct lfsck_instance *lfsck; struct ptlrpc_thread *thread; struct l_wait_info lwi = { 0 }; + int rc = 0; + int rc1 = 0; ENTRY; lfsck = lfsck_instance_find(key, true, false); if (unlikely(lfsck == NULL)) - RETURN(-ENODEV); + RETURN(-ENXIO); thread = &lfsck->li_thread; + /* release lfsck::li_mutex to avoid deadlock. */ + if (stop != NULL && stop->ls_flags & LPF_BROADCAST) { + if (!lfsck->li_master) { + CERROR("%s: only allow to specify '-A' via MDS\n", + lfsck_lfsck2name(lfsck)); + + GOTO(out, rc = -EPERM); + } + + rc1 = lfsck_stop_all(env, lfsck, stop); + } + mutex_lock(&lfsck->li_mutex); spin_lock(&lfsck->li_lock); + /* no error if LFSCK is already stopped, or was never started */ if (thread_is_init(thread) || thread_is_stopped(thread)) { spin_unlock(&lfsck->li_lock); - mutex_unlock(&lfsck->li_mutex); - lfsck_instance_put(env, lfsck); - RETURN(-EALREADY); + GOTO(out, rc = 0); + } + + if (stop != NULL) { + lfsck->li_status = stop->ls_status; + lfsck->li_flags = stop->ls_flags; + } else { + lfsck->li_status = LS_STOPPED; + lfsck->li_flags = 0; } - if (pause) - lfsck->li_paused = 1; thread_set_flags(thread, SVC_STOPPING); spin_unlock(&lfsck->li_lock); @@ -1061,19 +2291,131 @@ int lfsck_stop(const struct lu_env *env, struct dt_device *key, bool pause) l_wait_event(thread->t_ctl_waitq, thread_is_stopped(thread), &lwi); + + GOTO(out, rc = 0); + +out: mutex_unlock(&lfsck->li_mutex); lfsck_instance_put(env, lfsck); - RETURN(0); + return rc != 0 ? rc : rc1; } EXPORT_SYMBOL(lfsck_stop); +int lfsck_in_notify(const struct lu_env *env, struct dt_device *key, + struct lfsck_request *lr) +{ + int rc = -EOPNOTSUPP; + ENTRY; + + switch (lr->lr_event) { + case LE_START: { + struct lfsck_start *start = &lfsck_env_info(env)->lti_start; + struct lfsck_start_param lsp; + + memset(start, 0, sizeof(*start)); + start->ls_valid = lr->lr_valid; + start->ls_speed_limit = lr->lr_speed; + start->ls_version = lr->lr_version; + start->ls_active = lr->lr_active; + start->ls_flags = lr->lr_param & ~LPF_BROADCAST; + start->ls_async_windows = lr->lr_async_windows; + + lsp.lsp_start = start; + lsp.lsp_index = lr->lr_index; + lsp.lsp_index_valid = 1; + rc = lfsck_start(env, key, &lsp); + break; + } + case LE_STOP: { + struct lfsck_stop *stop = &lfsck_env_info(env)->lti_stop; + + memset(stop, 0, sizeof(*stop)); + stop->ls_status = lr->lr_status; + stop->ls_flags = lr->lr_param & ~LPF_BROADCAST; + rc = lfsck_stop(env, key, stop); + break; + } + case LE_PHASE1_DONE: + case LE_PHASE2_DONE: + case LE_FID_ACCESSED: + case LE_PEER_EXIT: + case LE_CONDITIONAL_DESTROY: + case LE_PAIRS_VERIFY: { + struct lfsck_instance *lfsck; + struct lfsck_component *com; + + lfsck = lfsck_instance_find(key, true, false); + if (unlikely(lfsck == NULL)) + RETURN(-ENXIO); + + com = lfsck_component_find(lfsck, lr->lr_active); + if (likely(com != NULL)) { + rc = com->lc_ops->lfsck_in_notify(env, com, lr); + lfsck_component_put(env, com); + } + + lfsck_instance_put(env, lfsck); + break; + } + default: + break; + } + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_in_notify); + +int lfsck_query(const struct lu_env *env, struct dt_device *key, + struct lfsck_request *lr) +{ + struct lfsck_instance *lfsck; + struct lfsck_component *com; + int rc; + ENTRY; + + lfsck = lfsck_instance_find(key, true, false); + if (unlikely(lfsck == NULL)) + RETURN(-ENXIO); + + com = lfsck_component_find(lfsck, lr->lr_active); + if (likely(com != NULL)) { + rc = com->lc_ops->lfsck_query(env, com); + lfsck_component_put(env, com); + } else { + rc = -ENOTSUPP; + } + + lfsck_instance_put(env, lfsck); + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_query); + +int lfsck_register_namespace(const struct lu_env *env, struct dt_device *key, + struct ldlm_namespace *ns) +{ + struct lfsck_instance *lfsck; + int rc = -ENXIO; + + lfsck = lfsck_instance_find(key, true, false); + if (likely(lfsck != NULL)) { + lfsck->li_namespace = ns; + lfsck_instance_put(env, lfsck); + rc = 0; + } + + return rc; +} +EXPORT_SYMBOL(lfsck_register_namespace); + int lfsck_register(const struct lu_env *env, struct dt_device *key, - struct dt_device *next, bool master) + struct dt_device *next, struct obd_device *obd, + lfsck_out_notify notify, void *notify_data, bool master) { struct lfsck_instance *lfsck; struct dt_object *root = NULL; - struct dt_object *obj; + struct dt_object *obj = NULL; struct lu_fid *fid = &lfsck_env_info(env)->lti_fid; int rc; ENTRY; @@ -1094,14 +2436,26 @@ int lfsck_register(const struct lu_env *env, struct dt_device *key, CFS_INIT_LIST_HEAD(&lfsck->li_list_double_scan); CFS_INIT_LIST_HEAD(&lfsck->li_list_idle); atomic_set(&lfsck->li_ref, 1); + atomic_set(&lfsck->li_double_scan_count, 0); init_waitqueue_head(&lfsck->li_thread.t_ctl_waitq); + lfsck->li_out_notify = notify; + lfsck->li_out_notify_data = notify_data; lfsck->li_next = next; lfsck->li_bottom = key; + lfsck->li_obd = obd; + + rc = lfsck_tgt_descs_init(&lfsck->li_ost_descs); + if (rc != 0) + GOTO(out, rc); + + rc = lfsck_tgt_descs_init(&lfsck->li_mdt_descs); + if (rc != 0) + GOTO(out, rc); fid->f_seq = FID_SEQ_LOCAL_NAME; fid->f_oid = 1; fid->f_ver = 0; - rc = local_oid_storage_init(env, lfsck->li_bottom, fid, &lfsck->li_los); + rc = local_oid_storage_init(env, key, fid, &lfsck->li_los); if (rc != 0) GOTO(out, rc); @@ -1109,54 +2463,109 @@ int lfsck_register(const struct lu_env *env, struct dt_device *key, if (rc != 0) GOTO(out, rc); - root = dt_locate(env, lfsck->li_bottom, fid); + root = dt_locate(env, key, fid); if (IS_ERR(root)) GOTO(out, rc = PTR_ERR(root)); + if (unlikely(!dt_try_as_dir(env, root))) + GOTO(out, rc = -ENOTDIR); + lfsck->li_local_root_fid = *fid; - dt_try_as_dir(env, root); if (master) { lfsck->li_master = 1; - if (lfsck_dev_idx(lfsck->li_bottom) == 0) { + if (lfsck_dev_idx(key) == 0) { + struct lu_fid *pfid = &lfsck_env_info(env)->lti_fid2; + const struct lu_name *cname; + rc = dt_lookup(env, root, (struct dt_rec *)(&lfsck->li_global_root_fid), (const struct dt_key *)"ROOT", BYPASS_CAPA); if (rc != 0) GOTO(out, rc); + + obj = dt_locate(env, key, &lfsck->li_global_root_fid); + if (IS_ERR(obj)) + GOTO(out, rc = PTR_ERR(obj)); + + rc = dt_lookup(env, obj, (struct dt_rec *)fid, + (const struct dt_key *)dotlustre, BYPASS_CAPA); + if (rc != 0) + GOTO(out, rc); + + lu_object_put(env, &obj->do_lu); + obj = dt_locate(env, key, fid); + if (IS_ERR(obj)) + GOTO(out, rc = PTR_ERR(obj)); + + cname = lfsck_name_get_const(env, dotlustre, + strlen(dotlustre)); + rc = lfsck_verify_linkea(env, key, obj, cname, + &lfsck->li_global_root_fid); + if (rc != 0) + GOTO(out, rc); + + *pfid = *fid; + rc = dt_lookup(env, obj, (struct dt_rec *)fid, + (const struct dt_key *)lostfound, + BYPASS_CAPA); + if (rc != 0) + GOTO(out, rc); + + lu_object_put(env, &obj->do_lu); + obj = dt_locate(env, key, fid); + if (IS_ERR(obj)) + GOTO(out, rc = PTR_ERR(obj)); + + cname = lfsck_name_get_const(env, lostfound, + strlen(lostfound)); + rc = lfsck_verify_linkea(env, key, obj, cname, pfid); + if (rc != 0) + GOTO(out, rc); + + lu_object_put(env, &obj->do_lu); + obj = NULL; } } fid->f_seq = FID_SEQ_LOCAL_FILE; fid->f_oid = OTABLE_IT_OID; fid->f_ver = 0; - obj = dt_locate(env, lfsck->li_bottom, fid); + obj = dt_locate(env, key, fid); if (IS_ERR(obj)) GOTO(out, rc = PTR_ERR(obj)); + lu_object_get(&obj->do_lu); lfsck->li_obj_oit = obj; rc = obj->do_ops->do_index_try(env, obj, &dt_otable_features); - if (rc != 0) { - if (rc == -ENOTSUPP) - GOTO(add, rc = 0); - + if (rc != 0) GOTO(out, rc); - } rc = lfsck_bookmark_setup(env, lfsck); if (rc != 0) GOTO(out, rc); if (master) { + rc = lfsck_fid_init(lfsck); + if (rc < 0) + GOTO(out, rc); + rc = lfsck_namespace_setup(env, lfsck); if (rc < 0) GOTO(out, rc); } + rc = lfsck_layout_setup(env, lfsck); + if (rc < 0) + GOTO(out, rc); + /* XXX: more LFSCK components initialization to be added here. */ -add: rc = lfsck_instance_add(lfsck); + if (rc == 0) + rc = lfsck_add_target_from_orphan(env, lfsck); out: + if (obj != NULL && !IS_ERR(obj)) + lu_object_put(env, &obj->do_lu); if (root != NULL && !IS_ERR(root)) lu_object_put(env, &root->do_lu); if (rc != 0) @@ -1175,19 +2584,166 @@ void lfsck_degister(const struct lu_env *env, struct dt_device *key) } EXPORT_SYMBOL(lfsck_degister); +int lfsck_add_target(const struct lu_env *env, struct dt_device *key, + struct dt_device *tgt, struct obd_export *exp, + __u32 index, bool for_ost) +{ + struct lfsck_instance *lfsck; + struct lfsck_tgt_desc *ltd; + int rc; + ENTRY; + + OBD_ALLOC_PTR(ltd); + if (ltd == NULL) + RETURN(-ENOMEM); + + ltd->ltd_tgt = tgt; + ltd->ltd_key = key; + ltd->ltd_exp = exp; + INIT_LIST_HEAD(<d->ltd_orphan_list); + INIT_LIST_HEAD(<d->ltd_layout_list); + INIT_LIST_HEAD(<d->ltd_layout_phase_list); + atomic_set(<d->ltd_ref, 1); + ltd->ltd_index = index; + + spin_lock(&lfsck_instance_lock); + lfsck = __lfsck_instance_find(key, true, false); + if (lfsck == NULL) { + if (for_ost) + list_add_tail(<d->ltd_orphan_list, + &lfsck_ost_orphan_list); + else + list_add_tail(<d->ltd_orphan_list, + &lfsck_mdt_orphan_list); + spin_unlock(&lfsck_instance_lock); + + RETURN(0); + } + spin_unlock(&lfsck_instance_lock); + + rc = __lfsck_add_target(env, lfsck, ltd, for_ost, false); + if (rc != 0) + lfsck_tgt_put(ltd); + + lfsck_instance_put(env, lfsck); + + RETURN(rc); +} +EXPORT_SYMBOL(lfsck_add_target); + +void lfsck_del_target(const struct lu_env *env, struct dt_device *key, + struct dt_device *tgt, __u32 index, bool for_ost) +{ + struct lfsck_instance *lfsck; + struct lfsck_tgt_descs *ltds; + struct lfsck_tgt_desc *ltd = NULL; + struct list_head *head; + + if (for_ost) + head = &lfsck_ost_orphan_list; + else + head = &lfsck_mdt_orphan_list; + + spin_lock(&lfsck_instance_lock); + list_for_each_entry(ltd, head, ltd_orphan_list) { + if (ltd->ltd_tgt == tgt) { + list_del_init(<d->ltd_orphan_list); + spin_unlock(&lfsck_instance_lock); + lfsck_tgt_put(ltd); + + return; + } + } + + lfsck = __lfsck_instance_find(key, true, false); + spin_unlock(&lfsck_instance_lock); + if (unlikely(lfsck == NULL)) + return; + + if (for_ost) + ltds = &lfsck->li_ost_descs; + else + ltds = &lfsck->li_mdt_descs; + + down_write(<ds->ltd_rw_sem); + LASSERT(ltds->ltd_tgts_bitmap != NULL); + + if (unlikely(index >= ltds->ltd_tgts_bitmap->size)) + goto unlock; + + ltd = LTD_TGT(ltds, index); + if (unlikely(ltd == NULL)) + goto unlock; + + LASSERT(ltds->ltd_tgtnr > 0); + + ltds->ltd_tgtnr--; + cfs_bitmap_clear(ltds->ltd_tgts_bitmap, index); + LTD_TGT(ltds, index) = NULL; + +unlock: + if (ltd == NULL) { + if (for_ost) + head = &lfsck->li_ost_descs.ltd_orphan; + else + head = &lfsck->li_ost_descs.ltd_orphan; + + list_for_each_entry(ltd, head, ltd_orphan_list) { + if (ltd->ltd_tgt == tgt) { + list_del_init(<d->ltd_orphan_list); + break; + } + } + } + + up_write(<ds->ltd_rw_sem); + if (ltd != NULL) { + spin_lock(<ds->ltd_lock); + ltd->ltd_dead = 1; + spin_unlock(<ds->ltd_lock); + lfsck_stop_notify(env, lfsck, ltds, ltd, LFSCK_TYPE_LAYOUT); + lfsck_tgt_put(ltd); + } + + lfsck_instance_put(env, lfsck); +} +EXPORT_SYMBOL(lfsck_del_target); + static int __init lfsck_init(void) { int rc; + INIT_LIST_HEAD(&lfsck_ost_orphan_list); + INIT_LIST_HEAD(&lfsck_mdt_orphan_list); lfsck_key_init_generic(&lfsck_thread_key, NULL); rc = lu_context_key_register(&lfsck_thread_key); + if (rc == 0) { + tgt_register_lfsck_in_notify(lfsck_in_notify); + tgt_register_lfsck_query(lfsck_query); + } + return rc; } static void __exit lfsck_exit(void) { + struct lfsck_tgt_desc *ltd; + struct lfsck_tgt_desc *next; + LASSERT(cfs_list_empty(&lfsck_instance_list)); + list_for_each_entry_safe(ltd, next, &lfsck_ost_orphan_list, + ltd_orphan_list) { + list_del_init(<d->ltd_orphan_list); + lfsck_tgt_put(ltd); + } + + list_for_each_entry_safe(ltd, next, &lfsck_mdt_orphan_list, + ltd_orphan_list) { + list_del_init(<d->ltd_orphan_list); + lfsck_tgt_put(ltd); + } + lu_context_key_degister(&lfsck_thread_key); }