struct lfsck_layout_slave_target {
/* link into lfsck_layout_slave_data::llsd_master_list. */
struct list_head llst_list;
+ /* The position for next record in the rbtree for iteration. */
+ struct lu_fid llst_fid;
+ /* Dummy hash for iteration against the rbtree. */
+ __u64 llst_hash;
__u64 llst_gen;
atomic_t llst_ref;
__u32 llst_index;
static inline struct lfsck_layout_slave_target *
lfsck_layout_llst_find_and_del(struct lfsck_layout_slave_data *llsd,
- __u32 index)
+ __u32 index, bool unlink)
{
struct lfsck_layout_slave_target *llst;
spin_lock(&llsd->llsd_lock);
list_for_each_entry(llst, &llsd->llsd_master_list, llst_list) {
if (llst->llst_index == index) {
- list_del_init(&llst->llst_list);
+ if (unlink)
+ list_del_init(&llst->llst_list);
+ else
+ atomic_inc(&llst->llst_ref);
spin_unlock(&llsd->llsd_lock);
return llst;
static int lfsck_layout_verify_header(struct lov_mds_md_v1 *lmm)
{
__u32 magic;
- __u32 patten;
+ __u32 pattern;
magic = le32_to_cpu(lmm->lmm_magic);
/* If magic crashed, keep it there. Sometime later, during OST-object
* orphan handling, if some OST-object(s) back-point to it, it can be
* verified and repaired. */
- if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
- return -EINVAL;
+ if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3) {
+ struct ost_id oi;
+ int rc;
+
+ lmm_oi_cpu_to_le(&oi, &lmm->lmm_oi);
+ if ((magic & LOV_MAGIC_MASK) == LOV_MAGIC_MAGIC)
+ rc = -EOPNOTSUPP;
+ else
+ rc = -EINVAL;
+
+ CDEBUG(D_LFSCK, "%s LOV EA magic %u on "DOSTID"\n",
+ rc == -EINVAL ? "Unknown" : "Unsupported",
+ magic, POSTID(&oi));
+
+ return rc;
+ }
- patten = le32_to_cpu(lmm->lmm_pattern);
+ pattern = le32_to_cpu(lmm->lmm_pattern);
/* XXX: currently, we only support LOV_PATTERN_RAID0. */
- if (patten != LOV_PATTERN_RAID0)
+ if (lov_pattern(pattern) != LOV_PATTERN_RAID0) {
+ struct ost_id oi;
+
+ lmm_oi_cpu_to_le(&oi, &lmm->lmm_oi);
+ CDEBUG(D_LFSCK, "Unsupported LOV EA pattern %u on "DOSTID"\n",
+ pattern, POSTID(&oi));
+
return -EOPNOTSUPP;
+ }
return 0;
}
#define LFSCK_RBTREE_BITMAP_SIZE PAGE_CACHE_SIZE
#define LFSCK_RBTREE_BITMAP_WIDTH (LFSCK_RBTREE_BITMAP_SIZE << 3)
-#define LFSCK_RBTREE_BITMAP_MASK (LFSCK_RBTREE_BITMAP_SIZE - 1)
+#define LFSCK_RBTREE_BITMAP_MASK (LFSCK_RBTREE_BITMAP_WIDTH - 1)
struct lfsck_rbtree_node {
struct rb_node lrn_node;
if (oid < lrn->lrn_first_oid)
return -1;
- if (oid >= lrn->lrn_first_oid + LFSCK_RBTREE_BITMAP_WIDTH)
+ if (oid - lrn->lrn_first_oid >= LFSCK_RBTREE_BITMAP_WIDTH)
return 1;
return 0;
}
-/* The caller should hold lock. */
+/* The caller should hold llsd->llsd_rb_lock. */
static struct lfsck_rbtree_node *
lfsck_rbtree_search(struct lfsck_layout_slave_data *llsd,
- const struct lu_fid *fid)
+ const struct lu_fid *fid, bool *exact)
{
- struct rb_node *node = llsd->llsd_rb_root.rb_node;
- struct lfsck_rbtree_node *lrn;
- int rc;
+ struct rb_node *node = llsd->llsd_rb_root.rb_node;
+ struct rb_node *prev = NULL;
+ struct lfsck_rbtree_node *lrn = NULL;
+ int rc = 0;
+
+ if (exact != NULL)
+ *exact = true;
while (node != NULL) {
+ prev = node;
lrn = rb_entry(node, struct lfsck_rbtree_node, lrn_node);
rc = lfsck_rbtree_cmp(lrn, fid_seq(fid), fid_oid(fid));
if (rc < 0)
return lrn;
}
- return NULL;
+ if (exact == NULL)
+ return NULL;
+
+ /* If there is no exactly matched one, then to the next valid one. */
+ *exact = false;
+
+ /* The rbtree is empty. */
+ if (rc == 0)
+ return NULL;
+
+ if (rc < 0)
+ return lrn;
+
+ node = rb_next(prev);
+
+ /* The end of the rbtree. */
+ if (node == NULL)
+ return NULL;
+
+ lrn = rb_entry(node, struct lfsck_rbtree_node, lrn_node);
+
+ return lrn;
}
static struct lfsck_rbtree_node *lfsck_rbtree_new(const struct lu_env *env,
lfsck_rbtree_insert(struct lfsck_layout_slave_data *llsd,
struct lfsck_rbtree_node *lrn)
{
- struct rb_node **pos = &(llsd->llsd_rb_root.rb_node);
+ struct rb_node **pos = &llsd->llsd_rb_root.rb_node;
struct rb_node *parent = NULL;
struct lfsck_rbtree_node *tmp;
int rc;
- while (*pos) {
+ while (*pos != NULL) {
parent = *pos;
- tmp = rb_entry(*pos, struct lfsck_rbtree_node, lrn_node);
+ tmp = rb_entry(parent, struct lfsck_rbtree_node, lrn_node);
rc = lfsck_rbtree_cmp(tmp, lrn->lrn_seq, lrn->lrn_first_oid);
if (rc < 0)
- pos = &((*pos)->rb_left);
+ pos = &(*pos)->rb_left;
else if (rc > 0)
- pos = &((*pos)->rb_right);
+ pos = &(*pos)->rb_right;
else
return tmp;
}
return lrn;
}
+extern const struct dt_index_operations lfsck_orphan_index_ops;
+
static int lfsck_rbtree_setup(const struct lu_env *env,
struct lfsck_component *com)
{
if (IS_ERR(obj))
RETURN(PTR_ERR(obj));
- /* XXX: Generate an in-RAM object to stand for the layout rbtree.
- * Scanning the layout rbtree will be via the iteration over
- * the object. In the future, the rbtree may be written onto
- * disk with the object.
+ /* Generate an in-RAM object to stand for the layout rbtree.
+ * Scanning the layout rbtree will be via the iteration over
+ * the object. In the future, the rbtree may be written onto
+ * disk with the object.
*
- * Mark the object to be as exist. */
+ * Mark the object to be as exist. */
obj->do_lu.lo_header->loh_attr |= LOHA_EXISTS;
+ obj->do_index_ops = &lfsck_orphan_index_ops;
llsd->llsd_rb_obj = obj;
llsd->llsd_rbtree_valid = 1;
dev->dd_record_fid_accessed = 1;
if (!llsd->llsd_rbtree_valid)
GOTO(unlock, rc = 0);
- lrn = lfsck_rbtree_search(llsd, fid);
+ lrn = lfsck_rbtree_search(llsd, fid, NULL);
if (lrn == NULL) {
struct lfsck_rbtree_node *tmp;
/* Any accessed object must be a known object. */
if (!test_and_set_bit(idx, lrn->lrn_known_bitmap))
atomic_inc(&lrn->lrn_known_count);
- if (accessed) {
- if (!test_and_set_bit(idx, lrn->lrn_accessed_bitmap))
- atomic_inc(&lrn->lrn_accessed_count);
- }
+ if (accessed && !test_and_set_bit(idx, lrn->lrn_accessed_bitmap))
+ atomic_inc(&lrn->lrn_accessed_count);
GOTO(unlock, rc = 0);
RETURN(rc);
}
- rc = dt_declare_record_write(env, obj, size, pos, handle);
+ rc = dt_declare_record_write(env, obj, lfsck_buf_get(env, lo, size),
+ pos, handle);
if (rc != 0) {
CERROR("%s: fail to declare trans for storing lfsck_layout(1): "
"rc = %d\n", lfsck_lfsck2name(lfsck), rc);
if (rc != 0)
GOTO(stop, rc);
- rc = dt_declare_record_write(env, obj, sizeof(lastid), pos, th);
+ rc = dt_declare_record_write(env, obj,
+ lfsck_buf_get(env, &lastid,
+ sizeof(lastid)),
+ pos, th);
if (rc != 0)
GOTO(stop, rc);
continue;
}
+ lastid = cpu_to_le64(lls->lls_lastid);
rc = dt_declare_record_write(env, lls->lls_lastid_obj,
- sizeof(lastid), pos, th);
+ lfsck_buf_get(env, &lastid,
+ sizeof(lastid)),
+ pos, th);
if (rc != 0)
goto stop;
if (rc != 0)
goto stop;
- lastid = cpu_to_le64(lls->lls_lastid);
dt_write_lock(env, lls->lls_lastid_obj, 0);
rc = dt_record_write(env, lls->lls_lastid_obj,
lfsck_buf_get(env, &lastid,
return rc;
}
+static void lfsck_layout_record_failure(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_layout *lo)
+{
+ lo->ll_objs_failed_phase1++;
+ if (unlikely(lo->ll_pos_first_inconsistent == 0))
+ lo->ll_pos_first_inconsistent =
+ lfsck->li_obj_oit->do_index_ops->dio_it.store(env,
+ lfsck->li_di_oit);
+}
+
static int lfsck_layout_master_async_interpret(const struct lu_env *env,
struct ptlrpc_request *req,
void *args, int rc)
struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
down_write(&com->lc_sem);
-
lo->ll_run_time_phase2 += cfs_duration_sec(cfs_time_current() +
HALF_SEC - lfsck->li_time_last_checkpoint);
lo->ll_time_last_checkpoint = cfs_time_current_sec();
lo->ll_status = LS_FAILED;
}
- if (lo->ll_status != LS_PAUSED) {
- 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);
- }
-
rc = lfsck_layout_store(env, com);
-
up_write(&com->lc_sem);
return rc;
return rc;
}
-static int lfsck_layout_scan_orphan(const struct lu_env *env,
- struct lfsck_component *com,
- struct lfsck_tgt_desc *ltd)
+/**
+ * Get the system default stripe size.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ * \param[out] size pointer to the default stripe size
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int lfsck_layout_get_def_stripesize(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ __u32 *size)
{
- /* XXX: To be extended in other patch. */
+ struct lov_user_md *lum = &lfsck_env_info(env)->lti_lum;
+ struct dt_object *root;
+ int rc;
- return 0;
+ root = dt_locate(env, lfsck->li_next, &lfsck->li_local_root_fid);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+
+ /* Get the default stripe size via xattr_get on the backend root. */
+ rc = dt_xattr_get(env, root, lfsck_buf_get(env, lum, sizeof(*lum)),
+ XATTR_NAME_LOV, BYPASS_CAPA);
+ if (rc > 0) {
+ /* The lum->lmm_stripe_size is LE mode. The *size also
+ * should be LE mode. So it is unnecessary to convert. */
+ *size = lum->lmm_stripe_size;
+ rc = 0;
+ } else if (unlikely(rc == 0)) {
+ rc = -EINVAL;
+ }
+
+ lfsck_object_put(env, root);
+
+ return rc;
}
-/* For the MDT-object with dangling reference, we need to re-create
- * the missed OST-object with the known FID/owner information. */
-static int lfsck_layout_recreate_ostobj(const struct lu_env *env,
- struct lfsck_component *com,
- struct lfsck_layout_req *llr,
- struct lu_attr *la)
+/**
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_refill_lovea(const struct lu_env *env,
+ struct thandle *handle,
+ struct dt_object *parent,
+ struct lu_fid *cfid,
+ struct lu_buf *buf,
+ struct lov_ost_data_v1 *slot,
+ int fl, __u32 ost_idx)
{
- struct lfsck_thread_info *info = lfsck_env_info(env);
- struct filter_fid *pfid = &info->lti_new_pfid;
- struct dt_allocation_hint *hint = &info->lti_hint;
- struct dt_object *parent = llr->llr_parent->llo_obj;
- struct dt_object *child = llr->llr_child;
- struct dt_device *dev = lfsck_obj2dt_dev(child);
- const struct lu_fid *tfid = lu_object_fid(&parent->do_lu);
- struct thandle *handle;
- struct lu_buf *buf;
- struct lustre_handle lh = { 0 };
- int rc;
- ENTRY;
+ struct ost_id *oi = &lfsck_env_info(env)->lti_oi;
+ struct lov_mds_md_v1 *lmm = buf->lb_buf;
+ int rc;
- CDEBUG(D_LFSCK, "Repair dangling reference for: parent "DFID
- ", child "DFID", OST-index %u, stripe-index %u, owner %u:%u\n",
- PFID(lfsck_dto2fid(parent)), PFID(lfsck_dto2fid(child)),
- llr->llr_ost_idx, llr->llr_lov_idx, la->la_uid, la->la_gid);
+ fid_to_ostid(cfid, oi);
+ ostid_cpu_to_le(oi, &slot->l_ost_oi);
+ slot->l_ost_gen = cpu_to_le32(0);
+ slot->l_ost_idx = cpu_to_le32(ost_idx);
- rc = lfsck_layout_lock(env, com, parent, &lh,
- MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
- if (rc != 0)
- RETURN(rc);
+ if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_HOLE) {
+ struct lov_ost_data_v1 *objs;
+ int i;
+ __u16 count;
- handle = dt_trans_create(env, dev);
- if (IS_ERR(handle))
- GOTO(unlock1, rc = PTR_ERR(handle));
+ count = le16_to_cpu(lmm->lmm_stripe_count);
+ if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1)
+ objs = &lmm->lmm_objects[0];
+ else
+ objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
+ for (i = 0; i < count; i++, objs++) {
+ if (objs != slot && lovea_slot_is_dummy(objs))
+ break;
+ }
- hint->dah_parent = NULL;
- hint->dah_mode = 0;
- pfid->ff_parent.f_seq = cpu_to_le64(tfid->f_seq);
- pfid->ff_parent.f_oid = cpu_to_le32(tfid->f_oid);
- pfid->ff_parent.f_ver = cpu_to_le32(llr->llr_lov_idx);
- buf = lfsck_buf_get(env, pfid, sizeof(struct filter_fid));
+ /* If the @slot is the last dummy slot to be refilled,
+ * then drop LOV_PATTERN_F_HOLE from lmm::lmm_pattern. */
+ if (i == count)
+ lmm->lmm_pattern &= ~cpu_to_le32(LOV_PATTERN_F_HOLE);
+ }
- rc = dt_declare_create(env, child, la, hint, NULL, handle);
- if (rc != 0)
- GOTO(stop, rc);
+ rc = dt_xattr_set(env, parent, buf, XATTR_NAME_LOV, fl, handle,
+ BYPASS_CAPA);
+ if (rc == 0)
+ rc = 1;
- rc = dt_declare_xattr_set(env, child, buf, XATTR_NAME_FID,
- LU_XATTR_CREATE, handle);
- if (rc != 0)
- GOTO(stop, rc);
+ return rc;
+}
- rc = dt_trans_start(env, dev, handle);
- if (rc != 0)
- GOTO(stop, rc);
+/**
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_extend_lovea(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct thandle *handle,
+ struct dt_object *parent,
+ struct lu_fid *cfid,
+ struct lu_buf *buf, int fl,
+ __u32 ost_idx, __u32 ea_off, bool reset)
+{
+ struct lov_mds_md_v1 *lmm = buf->lb_buf;
+ struct lov_ost_data_v1 *objs;
+ int rc;
+ __u16 count;
+ ENTRY;
- dt_read_lock(env, parent, 0);
- if (unlikely(lu_object_is_dying(parent->do_lu.lo_header)))
- GOTO(unlock2, rc = 1);
+ if (fl == LU_XATTR_CREATE || reset) {
+ __u32 pattern = LOV_PATTERN_RAID0;
- rc = dt_create(env, child, la, hint, NULL, handle);
- if (rc != 0)
- GOTO(unlock2, rc);
+ count = ea_off + 1;
+ LASSERT(buf->lb_len == lov_mds_md_size(count, LOV_MAGIC_V1));
- rc = dt_xattr_set(env, child, buf, XATTR_NAME_FID, LU_XATTR_CREATE,
- handle, BYPASS_CAPA);
+ if (ea_off != 0 || reset)
+ pattern |= LOV_PATTERN_F_HOLE;
- GOTO(unlock2, rc);
+ memset(lmm, 0, buf->lb_len);
+ lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1);
+ lmm->lmm_pattern = cpu_to_le32(pattern);
+ fid_to_lmm_oi(lfsck_dto2fid(parent), &lmm->lmm_oi);
+ lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
-unlock2:
- dt_read_unlock(env, parent);
+ rc = lfsck_layout_get_def_stripesize(env, lfsck,
+ &lmm->lmm_stripe_size);
+ if (rc != 0)
+ RETURN(rc);
-stop:
- rc = lfsck_layout_trans_stop(env, dev, handle, rc);
+ objs = &lmm->lmm_objects[ea_off];
+ } else {
+ __u32 magic = le32_to_cpu(lmm->lmm_magic);
+ int gap;
-unlock1:
- lfsck_layout_unlock(&lh);
+ count = le16_to_cpu(lmm->lmm_stripe_count);
+ if (magic == LOV_MAGIC_V1)
+ objs = &lmm->lmm_objects[count];
+ else
+ objs = &((struct lov_mds_md_v3 *)lmm)->
+ lmm_objects[count];
- return rc;
+ gap = ea_off - count;
+ if (gap >= 0)
+ count = ea_off + 1;
+ LASSERT(buf->lb_len == lov_mds_md_size(count, magic));
+
+ if (gap > 0) {
+ memset(objs, 0, gap * sizeof(*objs));
+ lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_HOLE);
+ }
+
+ lmm->lmm_layout_gen =
+ cpu_to_le16(le16_to_cpu(lmm->lmm_layout_gen) + 1);
+ objs += gap;
+ }
+
+ lmm->lmm_stripe_count = cpu_to_le16(count);
+ rc = lfsck_layout_refill_lovea(env, handle, parent, cfid, buf, objs,
+ fl, ost_idx);
+
+ RETURN(rc);
}
-/* If the OST-object does not recognize the MDT-object as its parent, and
- * there is no other MDT-object claims as its parent, then just trust the
- * given MDT-object as its parent. So update the OST-object filter_fid. */
-static int lfsck_layout_repair_unmatched_pair(const struct lu_env *env,
- struct lfsck_component *com,
- struct lfsck_layout_req *llr,
- const struct lu_attr *pla)
+/**
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_update_pfid(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *parent,
+ struct lu_fid *cfid,
+ struct dt_device *cdev, __u32 ea_off)
{
- struct lfsck_thread_info *info = lfsck_env_info(env);
- struct filter_fid *pfid = &info->lti_new_pfid;
- struct lu_attr *tla = &info->lti_la3;
- struct dt_object *parent = llr->llr_parent->llo_obj;
- struct dt_object *child = llr->llr_child;
- struct dt_device *dev = lfsck_obj2dt_dev(child);
- const struct lu_fid *tfid = lu_object_fid(&parent->do_lu);
- struct thandle *handle;
- struct lu_buf *buf;
- struct lustre_handle lh = { 0 };
- int rc;
+ struct filter_fid *pfid = &lfsck_env_info(env)->lti_new_pfid;
+ struct dt_object *child;
+ struct thandle *handle;
+ const struct lu_fid *tfid = lu_object_fid(&parent->do_lu);
+ struct lu_buf *buf;
+ int rc = 0;
ENTRY;
- CDEBUG(D_LFSCK, "Repair unmatched MDT-OST pair for: parent "DFID
- ", child "DFID", OST-index %u, stripe-index %u, owner %u:%u\n",
- PFID(lfsck_dto2fid(parent)), PFID(lfsck_dto2fid(child)),
- llr->llr_ost_idx, llr->llr_lov_idx, pla->la_uid, pla->la_gid);
-
- rc = lfsck_layout_lock(env, com, parent, &lh,
- MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
- if (rc != 0)
- RETURN(rc);
+ child = lfsck_object_find_by_dev(env, cdev, cfid);
+ if (IS_ERR(child))
+ RETURN(PTR_ERR(child));
- handle = dt_trans_create(env, dev);
+ handle = dt_trans_create(env, cdev);
if (IS_ERR(handle))
- GOTO(unlock1, rc = PTR_ERR(handle));
+ GOTO(out, rc = PTR_ERR(handle));
pfid->ff_parent.f_seq = cpu_to_le64(tfid->f_seq);
pfid->ff_parent.f_oid = cpu_to_le32(tfid->f_oid);
- /* The ff_parent->f_ver is not the real parent fid->f_ver. Instead,
- * it is the OST-object index in the parent MDT-object layout. */
- pfid->ff_parent.f_ver = cpu_to_le32(llr->llr_lov_idx);
+ /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
+ * MDT-object's FID::f_ver, instead it is the OST-object index in its
+ * parent MDT-object's layout EA. */
+ pfid->ff_parent.f_stripe_idx = cpu_to_le32(ea_off);
buf = lfsck_buf_get(env, pfid, sizeof(struct filter_fid));
rc = dt_declare_xattr_set(env, child, buf, XATTR_NAME_FID, 0, handle);
if (rc != 0)
GOTO(stop, rc);
- tla->la_valid = LA_UID | LA_GID;
- tla->la_uid = pla->la_uid;
- tla->la_gid = pla->la_gid;
- rc = dt_declare_attr_set(env, child, tla, handle);
- if (rc != 0)
- GOTO(stop, rc);
-
- rc = dt_trans_start(env, dev, handle);
+ rc = dt_trans_start(env, cdev, handle);
if (rc != 0)
GOTO(stop, rc);
- dt_write_lock(env, parent, 0);
- if (unlikely(lu_object_is_dying(parent->do_lu.lo_header)))
- GOTO(unlock2, rc = 1);
-
rc = dt_xattr_set(env, child, buf, XATTR_NAME_FID, 0, handle,
BYPASS_CAPA);
- if (rc != 0)
- GOTO(unlock2, rc);
- /* Get the latest parent's owner. */
- rc = dt_attr_get(env, parent, tla, BYPASS_CAPA);
- if (rc != 0)
- GOTO(unlock2, rc);
-
- tla->la_valid = LA_UID | LA_GID;
- rc = dt_attr_set(env, child, tla, handle, BYPASS_CAPA);
-
- GOTO(unlock2, rc);
-
-unlock2:
- dt_write_unlock(env, parent);
+ GOTO(stop, rc = (rc == 0 ? 1 : rc));
stop:
- rc = lfsck_layout_trans_stop(env, dev, handle, rc);
+ dt_trans_stop(env, cdev, handle);
-unlock1:
- lfsck_layout_unlock(&lh);
+out:
+ lu_object_put(env, &child->do_lu);
return rc;
}
-/* If there are more than one MDT-objects claim as the OST-object's parent,
- * and the OST-object only recognizes one of them, then we need to generate
- * new OST-object(s) with new fid(s) for the non-recognized MDT-object(s). */
-static int lfsck_layout_repair_multiple_references(const struct lu_env *env,
- struct lfsck_component *com,
- struct lfsck_layout_req *llr,
- struct lu_attr *la,
- struct lu_buf *buf)
+/**
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_recreate_parent(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_tgt_desc *ltd,
+ struct lu_orphan_rec *rec,
+ struct lu_fid *cfid,
+ const char *prefix,
+ const char *postfix,
+ __u32 ea_off)
{
struct lfsck_thread_info *info = lfsck_env_info(env);
- struct dt_allocation_hint *hint = &info->lti_hint;
+ char *name = info->lti_key;
+ struct lu_attr *la = &info->lti_la;
struct dt_object_format *dof = &info->lti_dof;
- struct dt_device *pdev = com->lc_lfsck->li_next;
- struct ost_id *oi = &info->lti_oi;
- struct dt_object *parent = llr->llr_parent->llo_obj;
- struct dt_device *cdev = lfsck_obj2dt_dev(llr->llr_child);
- struct dt_object *child = NULL;
- struct lu_device *d = &cdev->dd_lu_dev;
- struct lu_object *o = NULL;
- struct thandle *handle;
- struct lov_mds_md_v1 *lmm;
- struct lov_ost_data_v1 *objs;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lu_fid *pfid = &rec->lor_fid;
+ struct lu_fid *tfid = &info->lti_fid3;
+ struct dt_device *next = lfsck->li_next;
+ struct dt_object *pobj = NULL;
+ struct dt_object *cobj = NULL;
+ struct thandle *th = NULL;
+ struct lu_buf *pbuf = NULL;
+ struct lu_buf *ea_buf = &info->lti_big_buf;
struct lustre_handle lh = { 0 };
- __u32 magic;
- int rc;
+ int buflen = ea_buf->lb_len;
+ int idx = 0;
+ int rc = 0;
ENTRY;
- CDEBUG(D_LFSCK, "Repair multiple references for: parent "DFID
- ", OST-index %u, stripe-index %u, owner %u:%u\n",
- PFID(lfsck_dto2fid(parent)), llr->llr_ost_idx,
- llr->llr_lov_idx, la->la_uid, la->la_gid);
+ /* Create .lustre/lost+found/MDTxxxx when needed. */
+ if (unlikely(lfsck->li_lpf_obj == NULL)) {
+ rc = lfsck_create_lpf(env, lfsck);
+ if (rc != 0)
+ RETURN(rc);
+ }
- rc = lfsck_layout_lock(env, com, parent, &lh,
- MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
- if (rc != 0)
- RETURN(rc);
+ if (fid_is_zero(pfid)) {
+ struct filter_fid *ff = &info->lti_new_pfid;
- handle = dt_trans_create(env, pdev);
- if (IS_ERR(handle))
- GOTO(unlock1, rc = PTR_ERR(handle));
+ rc = lfsck_fid_alloc(env, lfsck, pfid, false);
+ if (rc != 0)
+ RETURN(rc);
- o = lu_object_anon(env, d, NULL);
- if (IS_ERR(o))
- GOTO(stop, rc = PTR_ERR(o));
+ ff->ff_parent.f_seq = cpu_to_le64(pfid->f_seq);
+ ff->ff_parent.f_oid = cpu_to_le32(pfid->f_oid);
+ /* Currently, the filter_fid::ff_parent::f_ver is not the
+ * real parent MDT-object's FID::f_ver, instead it is the
+ * OST-object index in its parent MDT-object's layout EA. */
+ ff->ff_parent.f_stripe_idx = cpu_to_le32(ea_off);
+ pbuf = lfsck_buf_get(env, ff, sizeof(struct filter_fid));
+ cobj = lfsck_object_find_by_dev(env, ltd->ltd_tgt, cfid);
+ if (IS_ERR(cobj))
+ RETURN(PTR_ERR(cobj));
+ }
- child = container_of(o, struct dt_object, do_lu);
+ CDEBUG(D_LFSCK, "Re-create the lost MDT-object: parent "
+ DFID", child "DFID", OST-index %u, stripe-index %u, "
+ "prefix %s, postfix %s\n",
+ PFID(pfid), PFID(cfid), ltd->ltd_index, ea_off, prefix, postfix);
+
+ pobj = lfsck_object_find_by_dev(env, lfsck->li_bottom, pfid);
+ if (IS_ERR(pobj))
+ GOTO(put, rc = PTR_ERR(pobj));
+
+ LASSERT(prefix != NULL);
+ LASSERT(postfix != NULL);
+
+ /** name rules:
+ *
+ * 1. Use the MDT-object's FID as the name with prefix and postfix.
+ *
+ * 1.1 prefix "C-": More than one OST-objects claim the same
+ * MDT-object and the same slot in the layout EA.
+ * It may be created for dangling referenced MDT
+ * object or may be not.
+ * 1.2 prefix "N-": The orphan OST-object does not know which one
+ * is the real parent, so the LFSCK assign a new
+ * FID as its parent.
+ * 1.3 prefix "R-": The orphan OST-object know its parent FID but
+ * does not know the position in the namespace.
+ *
+ * 2. If there is name conflict, append more index for new name. */
+ sprintf(name, "%s"DFID"%s", prefix, PFID(pfid), postfix);
+ do {
+ rc = dt_lookup(env, lfsck->li_lpf_obj, (struct dt_rec *)tfid,
+ (const struct dt_key *)name, BYPASS_CAPA);
+ if (rc != 0 && rc != -ENOENT)
+ GOTO(put, rc);
+
+ if (unlikely(rc == 0)) {
+ CWARN("%s: The name %s under lost+found has been used "
+ "by the "DFID". Try to increase the FID version "
+ "for the new file name.\n",
+ lfsck_lfsck2name(lfsck), name, PFID(tfid));
+ sprintf(name, "%s"DFID"%s-%d", prefix, PFID(pfid),
+ postfix, ++idx);
+ }
+ } while (rc == 0);
+
+ memset(la, 0, sizeof(*la));
+ la->la_uid = rec->lor_uid;
+ la->la_gid = rec->lor_gid;
+ la->la_mode = S_IFREG | S_IRUSR;
+ la->la_valid = LA_MODE | LA_UID | LA_GID;
+
+ memset(dof, 0, sizeof(*dof));
+ dof->dof_type = dt_mode_to_dft(S_IFREG);
+
+ rc = lov_mds_md_size(ea_off + 1, LOV_MAGIC_V1);
+ if (buflen < rc) {
+ lu_buf_realloc(ea_buf, rc);
+ buflen = ea_buf->lb_len;
+ if (ea_buf->lb_buf == NULL)
+ GOTO(put, rc = -ENOMEM);
+ } else {
+ ea_buf->lb_len = rc;
+ }
+
+ /* Hold update lock on the .lustre/lost+found/MDTxxxx/.
+ *
+ * XXX: Currently, we do not grab the PDO lock as normal create cases,
+ * because creating MDT-object for orphan OST-object is rare, we
+ * do not much care about the performance. It can be improved in
+ * the future when needed. */
+ rc = lfsck_layout_lock(env, com, lfsck->li_lpf_obj, &lh,
+ MDS_INODELOCK_UPDATE);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ th = dt_trans_create(env, next);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
+
+ /* 1a. Update OST-object's parent information remotely.
+ *
+ * If other subsequent modifications failed, then next LFSCK scanning
+ * will process the OST-object as orphan again with known parent FID. */
+ if (cobj != NULL) {
+ rc = dt_declare_xattr_set(env, cobj, pbuf, XATTR_NAME_FID, 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+ }
+
+ /* 2a. Create the MDT-object locally. */
+ rc = dt_declare_create(env, pobj, la, NULL, dof, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 3a. Add layout EA for the MDT-object. */
+ rc = dt_declare_xattr_set(env, pobj, ea_buf, XATTR_NAME_LOV,
+ LU_XATTR_CREATE, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 4a. Insert the MDT-object to .lustre/lost+found/MDTxxxx/ */
+ rc = dt_declare_insert(env, lfsck->li_lpf_obj,
+ (const struct dt_rec *)pfid,
+ (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start(env, next, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 1b. Update OST-object's parent information remotely. */
+ if (cobj != NULL) {
+ rc = dt_xattr_set(env, cobj, pbuf, XATTR_NAME_FID, 0, th,
+ BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(stop, rc);
+ }
+
+ dt_write_lock(env, pobj, 0);
+ /* 2b. Create the MDT-object locally. */
+ rc = dt_create(env, pobj, la, NULL, dof, th);
+ if (rc == 0)
+ /* 3b. Add layout EA for the MDT-object. */
+ rc = lfsck_layout_extend_lovea(env, lfsck, th, pobj, cfid,
+ ea_buf, LU_XATTR_CREATE,
+ ltd->ltd_index, ea_off, false);
+ dt_write_unlock(env, pobj);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ /* 4b. Insert the MDT-object to .lustre/lost+found/MDTxxxx/ */
+ rc = dt_insert(env, lfsck->li_lpf_obj,
+ (const struct dt_rec *)pfid,
+ (const struct dt_key *)name, th, BYPASS_CAPA, 1);
+
+ GOTO(stop, rc);
+
+stop:
+ dt_trans_stop(env, next, th);
+
+unlock:
+ lfsck_layout_unlock(&lh);
+
+put:
+ if (cobj != NULL && !IS_ERR(cobj))
+ lu_object_put(env, &cobj->do_lu);
+ if (pobj != NULL && !IS_ERR(pobj))
+ lu_object_put(env, &pobj->do_lu);
+ ea_buf->lb_len = buflen;
+
+ return rc >= 0 ? 1 : rc;
+}
+
+static int lfsck_layout_master_conditional_destroy(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct lu_fid *fid,
+ __u32 index)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lfsck_request *lr = &info->lti_lr;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_tgt_desc *ltd;
+ struct ptlrpc_request *req;
+ struct lfsck_request *tmp;
+ struct obd_export *exp;
+ int rc = 0;
+ ENTRY;
+
+ ltd = lfsck_tgt_get(&lfsck->li_ost_descs, index);
+ if (unlikely(ltd == NULL))
+ RETURN(-ENXIO);
+
+ exp = ltd->ltd_exp;
+ if (!(exp_connect_flags(exp) & OBD_CONNECT_LFSCK))
+ GOTO(put, rc = -EOPNOTSUPP);
+
+ req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_LFSCK_NOTIFY);
+ if (req == NULL)
+ GOTO(put, rc = -ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, LFSCK_NOTIFY);
+ if (rc != 0) {
+ ptlrpc_request_free(req);
+
+ GOTO(put, rc);
+ }
+
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = LE_CONDITIONAL_DESTROY;
+ lr->lr_active = LT_LAYOUT;
+ lr->lr_fid = *fid;
+
+ tmp = req_capsule_client_get(&req->rq_pill, &RMF_LFSCK_REQUEST);
+ *tmp = *lr;
+ ptlrpc_request_set_replen(req);
+
+ rc = ptlrpc_queue_wait(req);
+ ptlrpc_req_finished(req);
+
+ GOTO(put, rc);
+
+put:
+ lfsck_tgt_put(ltd);
+
+ return rc;
+}
+
+static int lfsck_layout_slave_conditional_destroy(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_request *lr)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_attr *la = &info->lti_la;
+ ldlm_policy_data_t *policy = &info->lti_policy;
+ struct ldlm_res_id *resid = &info->lti_resid;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct dt_device *dev = lfsck->li_bottom;
+ struct lu_fid *fid = &lr->lr_fid;
+ struct dt_object *obj;
+ struct thandle *th = NULL;
+ struct lustre_handle lh = { 0 };
+ __u64 flags = 0;
+ int rc = 0;
+ ENTRY;
+
+ obj = lfsck_object_find_by_dev(env, dev, fid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ dt_read_lock(env, obj, 0);
+ if (dt_object_exists(obj) == 0) {
+ dt_read_unlock(env, obj);
+
+ GOTO(put, rc = -ENOENT);
+ }
+
+ /* Get obj's attr without lock firstly. */
+ rc = dt_attr_get(env, obj, la, BYPASS_CAPA);
+ dt_read_unlock(env, obj);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ if (likely(la->la_ctime != 0 || la->la_mode & S_ISUID))
+ GOTO(put, rc = -ETXTBSY);
+
+ /* Acquire extent lock on [0, EOF] to sync with all possible written. */
+ LASSERT(lfsck->li_namespace != NULL);
+
+ memset(policy, 0, sizeof(*policy));
+ policy->l_extent.end = OBD_OBJECT_EOF;
+ ost_fid_build_resid(fid, resid);
+ rc = ldlm_cli_enqueue_local(lfsck->li_namespace, resid, LDLM_EXTENT,
+ policy, LCK_EX, &flags, ldlm_blocking_ast,
+ ldlm_completion_ast, NULL, NULL, 0,
+ LVB_T_NONE, NULL, &lh);
+ if (rc != ELDLM_OK)
+ GOTO(put, rc = -EIO);
+
+ dt_write_lock(env, obj, 0);
+ /* Get obj's attr within lock again. */
+ rc = dt_attr_get(env, obj, la, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ if (la->la_ctime != 0)
+ GOTO(unlock, rc = -ETXTBSY);
+
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
+
+ rc = dt_declare_ref_del(env, obj, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_declare_destroy(env, obj, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_ref_del(env, obj, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_destroy(env, obj, th);
+ if (rc == 0)
+ CDEBUG(D_LFSCK, "Destroy the empty OST-object "DFID" which "
+ "was created for reparing dangling referenced case. "
+ "But the original missed OST-object is found now.\n",
+ PFID(fid));
+
+ GOTO(stop, rc);
+
+stop:
+ dt_trans_stop(env, dev, th);
+
+unlock:
+ dt_write_unlock(env, obj);
+ ldlm_lock_decref(&lh, LCK_EX);
+
+put:
+ lu_object_put(env, &obj->do_lu);
+
+ return rc;
+}
+
+/**
+ * Some OST-object has occupied the specified layout EA slot.
+ * Such OST-object may be generated by the LFSCK when repair
+ * dangling referenced MDT-object, which can be indicated by
+ * attr::la_ctime == 0 but without S_ISUID in la_mode. If it
+ * is true and such OST-object has not been modified yet, we
+ * will replace it with the orphan OST-object; otherwise the
+ * LFSCK will create new MDT-object to reference the orphan.
+ *
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_conflict_create(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_tgt_desc *ltd,
+ struct lu_orphan_rec *rec,
+ struct dt_object *parent,
+ struct lu_fid *cfid,
+ struct lu_buf *ea_buf,
+ struct lov_ost_data_v1 *slot,
+ __u32 ea_off, __u32 ori_len)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_fid *cfid2 = &info->lti_fid2;
+ struct ost_id *oi = &info->lti_oi;
+ char *postfix = info->lti_tmpbuf;
+ struct lov_mds_md_v1 *lmm = ea_buf->lb_buf;
+ struct dt_device *dev = com->lc_lfsck->li_bottom;
+ struct thandle *th = NULL;
+ struct lustre_handle lh = { 0 };
+ __u32 ost_idx2 = le32_to_cpu(slot->l_ost_idx);
+ int rc = 0;
+ ENTRY;
+
+ ostid_le_to_cpu(&slot->l_ost_oi, oi);
+ ostid_to_fid(cfid2, oi, ost_idx2);
+
+ CDEBUG(D_LFSCK, "Handle layout EA conflict: parent "DFID
+ ", cur-child "DFID" on the OST %u, orphan-child "
+ DFID" on the OST %u, stripe-index %u\n",
+ PFID(lfsck_dto2fid(parent)), PFID(cfid2), ost_idx2,
+ PFID(cfid), ltd->ltd_index, ea_off);
+
+ /* Hold layout lock on the parent to prevent others to access. */
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = lfsck_layout_master_conditional_destroy(env, com, cfid2, ost_idx2);
+
+ /* If the conflict OST-obejct is not created for fixing dangling
+ * referenced MDT-object in former LFSCK check/repair, or it has
+ * been modified by others, then we cannot destroy it. Re-create
+ * a new MDT-object for the orphan OST-object. */
+ if (rc == -ETXTBSY) {
+ /* No need the layout lock on the original parent. */
+ lfsck_layout_unlock(&lh);
+ ea_buf->lb_len = ori_len;
+
+ fid_zero(&rec->lor_fid);
+ snprintf(postfix, LFSCK_TMPBUF_LEN, "-"DFID"-%x",
+ PFID(lu_object_fid(&parent->do_lu)), ea_off);
+ rc = lfsck_layout_recreate_parent(env, com, ltd, rec, cfid,
+ "C-", postfix, ea_off);
+
+ RETURN(rc);
+ }
+
+ if (rc != 0 && rc != -ENOENT)
+ GOTO(unlock, rc);
+
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
+
+ rc = dt_declare_xattr_set(env, parent, ea_buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, 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, parent, 0);
+ lmm->lmm_layout_gen = cpu_to_le16(le16_to_cpu(lmm->lmm_layout_gen) + 1);
+ rc = lfsck_layout_refill_lovea(env, th, parent, cfid, ea_buf, slot,
+ LU_XATTR_REPLACE, ltd->ltd_index);
+ dt_write_unlock(env, parent);
+
+ GOTO(stop, rc);
+
+stop:
+ dt_trans_stop(env, dev, th);
+
+unlock:
+ lfsck_layout_unlock(&lh);
+
+out:
+ ea_buf->lb_len = ori_len;
+
+ return rc >= 0 ? 1 : rc;
+}
+
+/**
+ * \retval +1: repaired
+ * \retval 0: did nothing
+ * \retval -ve: on error
+ */
+static int lfsck_layout_recreate_lovea(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_tgt_desc *ltd,
+ struct lu_orphan_rec *rec,
+ struct dt_object *parent,
+ struct lu_fid *cfid,
+ __u32 ost_idx, __u32 ea_off)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_buf *buf = &info->lti_big_buf;
+ struct lu_fid *fid = &info->lti_fid2;
+ struct ost_id *oi = &info->lti_oi;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct dt_device *dt = lfsck->li_bottom;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct thandle *handle = NULL;
+ size_t buflen = buf->lb_len;
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ struct lustre_handle lh = { 0 };
+ __u32 magic;
+ int fl = 0;
+ int rc = 0;
+ int rc1;
+ int i;
+ __u16 count;
+ bool locked = false;
+ ENTRY;
+
+ CDEBUG(D_LFSCK, "Re-create the crashed layout EA: parent "
+ DFID", child "DFID", OST-index %u, stripe-index %u\n",
+ PFID(lfsck_dto2fid(parent)), PFID(cfid), ost_idx, ea_off);
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ RETURN(rc);
+
+again:
+ if (locked) {
+ dt_write_unlock(env, parent);
+ locked = false;
+ }
+
+ if (handle != NULL) {
+ dt_trans_stop(env, dt, handle);
+ handle = NULL;
+ }
+
+ if (rc < 0)
+ GOTO(unlock_layout, rc);
+
+ if (buf->lb_len < rc) {
+ lu_buf_realloc(buf, rc);
+ buflen = buf->lb_len;
+ if (buf->lb_buf == NULL)
+ GOTO(unlock_layout, rc = -ENOMEM);
+ }
+
+ if (!(bk->lb_param & LPF_DRYRUN)) {
+ handle = dt_trans_create(env, dt);
+ if (IS_ERR(handle))
+ GOTO(unlock_layout, rc = PTR_ERR(handle));
+
+ rc = dt_declare_xattr_set(env, parent, buf, XATTR_NAME_LOV,
+ fl, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dt, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+ }
+
+ dt_write_lock(env, parent, 0);
+ locked = true;
+ rc = dt_xattr_get(env, parent, buf, XATTR_NAME_LOV, BYPASS_CAPA);
+ if (rc == -ERANGE) {
+ rc = dt_xattr_get(env, parent, &LU_BUF_NULL, XATTR_NAME_LOV,
+ BYPASS_CAPA);
+ LASSERT(rc != 0);
+ goto again;
+ } else if (rc == -ENODATA || rc == 0) {
+ rc = lov_mds_md_size(ea_off + 1, LOV_MAGIC_V1);
+ /* If the declared is not big enough, re-try. */
+ if (buf->lb_len < rc)
+ goto again;
+
+ fl = LU_XATTR_CREATE;
+ } else if (rc < 0) {
+ GOTO(unlock_parent, rc);
+ } else if (unlikely(buf->lb_len == 0)) {
+ goto again;
+ } else {
+ fl = LU_XATTR_REPLACE;
+ }
+
+ if (fl == LU_XATTR_CREATE) {
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ LASSERT(buf->lb_len >= rc);
+
+ buf->lb_len = rc;
+ rc = lfsck_layout_extend_lovea(env, lfsck, handle, parent, cfid,
+ buf, fl, ost_idx, ea_off, false);
+
+ GOTO(unlock_parent, rc);
+ }
+
+ lmm = buf->lb_buf;
+ rc1 = lfsck_layout_verify_header(lmm);
+
+ /* If the LOV EA crashed, the rebuild it. */
+ if (rc1 == -EINVAL) {
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ LASSERT(buf->lb_len >= rc);
+
+ buf->lb_len = rc;
+ memset(lmm, 0, buf->lb_len);
+ rc = lfsck_layout_extend_lovea(env, lfsck, handle, parent, cfid,
+ buf, fl, ost_idx, ea_off, true);
+
+ GOTO(unlock_parent, rc);
+ }
+
+ /* For other unknown magic/pattern, keep the current LOV EA. */
+ if (rc1 != 0)
+ GOTO(unlock_parent, rc = rc1);
+
+ /* Currently, we only support LOV_MAGIC_V1/LOV_MAGIC_V3 which has
+ * been verified in lfsck_layout_verify_header() already. If some
+ * new magic introduced in the future, then layout LFSCK needs to
+ * be updated also. */
+ magic = le32_to_cpu(lmm->lmm_magic);
+ if (magic == LOV_MAGIC_V1) {
+ objs = &lmm->lmm_objects[0];
+ } else {
+ LASSERT(magic == LOV_MAGIC_V3);
+ objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
+ }
+
+ count = le16_to_cpu(lmm->lmm_stripe_count);
+ if (count == 0)
+ GOTO(unlock_parent, rc = -EINVAL);
+ LASSERT(count > 0);
+
+ /* Exceed the current end of MDT-object layout EA. Then extend it. */
+ if (count <= ea_off) {
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ rc = lov_mds_md_size(ea_off + 1, magic);
+ /* If the declared is not big enough, re-try. */
+ if (buf->lb_len < rc)
+ goto again;
+
+ buf->lb_len = rc;
+ rc = lfsck_layout_extend_lovea(env, lfsck, handle, parent, cfid,
+ buf, fl, ost_idx, ea_off, false);
+
+ GOTO(unlock_parent, rc);
+ }
+
+ LASSERTF(rc > 0, "invalid rc = %d\n", rc);
+
+ buf->lb_len = rc;
+ for (i = 0; i < count; i++, objs++) {
+ /* The MDT-object was created via lfsck_layout_recover_create()
+ * by others before, and we fill the dummy layout EA. */
+ if (lovea_slot_is_dummy(objs)) {
+ if (i != ea_off)
+ continue;
+
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ lmm->lmm_layout_gen =
+ cpu_to_le16(le16_to_cpu(lmm->lmm_layout_gen) + 1);
+ rc = lfsck_layout_refill_lovea(env, handle, parent,
+ cfid, buf, objs, fl,
+ ost_idx);
+ GOTO(unlock_parent, rc);
+ }
+
+ ostid_le_to_cpu(&objs->l_ost_oi, oi);
+ ostid_to_fid(fid, oi, le32_to_cpu(objs->l_ost_idx));
+ /* It should be rare case, the slot is there, but the LFSCK
+ * does not handle it during the first-phase cycle scanning. */
+ if (unlikely(lu_fid_eq(fid, cfid))) {
+ if (i == ea_off) {
+ GOTO(unlock_parent, rc = 0);
+ } else {
+ /* Rare case that the OST-object index
+ * does not match the parent MDT-object
+ * layout EA. We trust the later one. */
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ dt_write_unlock(env, parent);
+ if (handle != NULL)
+ dt_trans_stop(env, dt, handle);
+ lfsck_layout_unlock(&lh);
+ buf->lb_len = buflen;
+ rc = lfsck_layout_update_pfid(env, com, parent,
+ cfid, ltd->ltd_tgt, i);
+
+ RETURN(rc);
+ }
+ }
+ }
+
+ /* The MDT-object exists, but related layout EA slot is occupied
+ * by others. */
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ dt_write_unlock(env, parent);
+ if (handle != NULL)
+ dt_trans_stop(env, dt, handle);
+ lfsck_layout_unlock(&lh);
+ if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1)
+ objs = &lmm->lmm_objects[ea_off];
+ else
+ objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[ea_off];
+ rc = lfsck_layout_conflict_create(env, com, ltd, rec, parent, cfid,
+ buf, objs, ea_off, buflen);
+
+ RETURN(rc);
+
+unlock_parent:
+ if (locked)
+ dt_write_unlock(env, parent);
+
+stop:
+ if (handle != NULL)
+ dt_trans_stop(env, dt, handle);
+
+unlock_layout:
+ lfsck_layout_unlock(&lh);
+ buf->lb_len = buflen;
+
+ return rc;
+}
+
+static int lfsck_layout_scan_orphan_one(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_tgt_desc *ltd,
+ struct lu_orphan_rec *rec,
+ struct lu_fid *cfid)
+{
+ struct lfsck_layout *lo = com->lc_file_ram;
+ struct lu_fid *pfid = &rec->lor_fid;
+ struct dt_object *parent = NULL;
+ __u32 ea_off = pfid->f_stripe_idx;
+ int rc = 0;
+ ENTRY;
+
+ if (!fid_is_sane(cfid))
+ GOTO(out, rc = -EINVAL);
+
+ if (fid_is_zero(pfid)) {
+ rc = lfsck_layout_recreate_parent(env, com, ltd, rec, cfid,
+ "N-", "", ea_off);
+ GOTO(out, rc);
+ }
+
+ pfid->f_ver = 0;
+ if (!fid_is_sane(pfid))
+ GOTO(out, rc = -EINVAL);
+
+ parent = lfsck_object_find_by_dev(env, com->lc_lfsck->li_bottom, pfid);
+ if (IS_ERR(parent))
+ GOTO(out, rc = PTR_ERR(parent));
+
+ if (unlikely(dt_object_remote(parent) != 0))
+ GOTO(put, rc = -EXDEV);
+
+ if (dt_object_exists(parent) == 0) {
+ lu_object_put(env, &parent->do_lu);
+ rc = lfsck_layout_recreate_parent(env, com, ltd, rec, cfid,
+ "R-", "", ea_off);
+ GOTO(out, rc);
+ }
+
+ if (!S_ISREG(lu_object_attr(&parent->do_lu)))
+ GOTO(put, rc = -EISDIR);
+
+ rc = lfsck_layout_recreate_lovea(env, com, ltd, rec, parent, cfid,
+ ltd->ltd_index, ea_off);
+
+ GOTO(put, rc);
+
+put:
+ if (rc <= 0)
+ lu_object_put(env, &parent->do_lu);
+ else
+ /* The layout EA is changed, need to be reloaded next time. */
+ lu_object_put_nocache(env, &parent->do_lu);
+
+out:
+ down_write(&com->lc_sem);
+ com->lc_new_scanned++;
+ com->lc_new_checked++;
+ if (rc > 0) {
+ lo->ll_objs_repaired[LLIT_ORPHAN - 1]++;
+ rc = 0;
+ } else if (rc < 0) {
+ lo->ll_objs_failed_phase2++;
+ }
+ up_write(&com->lc_sem);
+
+ return rc;
+}
+
+static int lfsck_layout_scan_orphan(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_tgt_desc *ltd)
+{
+ struct lfsck_layout *lo = com->lc_file_ram;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct ost_id *oi = &info->lti_oi;
+ struct lu_fid *fid = &info->lti_fid;
+ struct dt_object *obj;
+ const struct dt_it_ops *iops;
+ struct dt_it *di;
+ int rc = 0;
+ ENTRY;
+
+ CDEBUG(D_LFSCK, "%s: start the orphan scanning for OST%04x\n",
+ lfsck_lfsck2name(lfsck), ltd->ltd_index);
+
+ ostid_set_seq(oi, FID_SEQ_IDIF);
+ ostid_set_id(oi, 0);
+ ostid_to_fid(fid, oi, ltd->ltd_index);
+ obj = lfsck_object_find_by_dev(env, ltd->ltd_tgt, fid);
+ if (unlikely(IS_ERR(obj)))
+ RETURN(PTR_ERR(obj));
+
+ rc = obj->do_ops->do_index_try(env, obj, &dt_lfsck_orphan_features);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ iops = &obj->do_index_ops->dio_it;
+ di = iops->init(env, obj, 0, BYPASS_CAPA);
+ if (IS_ERR(di))
+ GOTO(put, rc = PTR_ERR(di));
+
+ rc = iops->load(env, di, 0);
+ if (rc == -ESRCH) {
+ /* -ESRCH means that the orphan OST-objects rbtree has been
+ * cleanup because of the OSS server restart or other errors. */
+ lo->ll_flags |= LF_INCOMPLETE;
+ GOTO(fini, rc);
+ }
+
+ if (rc == 0)
+ rc = iops->next(env, di);
+ else if (rc > 0)
+ rc = 0;
+
+ if (rc < 0)
+ GOTO(fini, rc);
+
+ if (rc > 0)
+ GOTO(fini, rc = 0);
+
+ do {
+ struct dt_key *key;
+ struct lu_orphan_rec *rec = &info->lti_rec;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY3) &&
+ cfs_fail_val > 0) {
+ struct ptlrpc_thread *thread = &lfsck->li_thread;
+ struct l_wait_info lwi;
+
+ lwi = LWI_TIMEOUT(cfs_time_seconds(cfs_fail_val),
+ NULL, NULL);
+ l_wait_event(thread->t_ctl_waitq,
+ !thread_is_running(thread),
+ &lwi);
+ }
+
+ key = iops->key(env, di);
+ com->lc_fid_latest_scanned_phase2 = *(struct lu_fid *)key;
+ rc = iops->rec(env, di, (struct dt_rec *)rec, 0);
+ if (rc == 0)
+ rc = lfsck_layout_scan_orphan_one(env, com, ltd, rec,
+ &com->lc_fid_latest_scanned_phase2);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ GOTO(fini, rc);
+
+ lfsck_control_speed_by_self(com);
+ do {
+ rc = iops->next(env, di);
+ } while (rc < 0 && !(bk->lb_param & LPF_FAILOUT));
+ } while (rc == 0);
+
+ GOTO(fini, rc);
+
+fini:
+ iops->put(env, di);
+ iops->fini(env, di);
+put:
+ lu_object_put(env, &obj->do_lu);
+
+ CDEBUG(D_LFSCK, "%s: finish the orphan scanning for OST%04x, rc = %d\n",
+ lfsck_lfsck2name(lfsck), ltd->ltd_index, rc);
+
+ return rc > 0 ? 0 : rc;
+}
+
+/* For the MDT-object with dangling reference, we need to repare the
+ * inconsistency according to the LFSCK sponsor's requirement:
+ *
+ * 1) Keep the inconsistency there and report the inconsistency case,
+ * then give the chance to the application to find related issues,
+ * and the users can make the decision about how to handle it with
+ * more human knownledge. (by default)
+ *
+ * 2) Re-create the missed OST-object with the FID/owner information. */
+static int lfsck_layout_repair_dangling(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_layout_req *llr,
+ const struct lu_attr *pla)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct filter_fid *pfid = &info->lti_new_pfid;
+ struct dt_allocation_hint *hint = &info->lti_hint;
+ struct lu_attr *cla = &info->lti_la2;
+ struct dt_object *parent = llr->llr_parent->llo_obj;
+ struct dt_object *child = llr->llr_child;
+ struct dt_device *dev = lfsck_obj2dt_dev(child);
+ const struct lu_fid *tfid = lu_object_fid(&parent->do_lu);
+ struct thandle *handle;
+ struct lu_buf *buf;
+ struct lustre_handle lh = { 0 };
+ int rc;
+ bool create;
+ ENTRY;
+
+ if (com->lc_lfsck->li_bookmark_ram.lb_param & LPF_CREATE_OSTOBJ)
+ create = true;
+ else
+ create = false;
+
+ CDEBUG(D_LFSCK, "Found dangling reference for: parent "DFID
+ ", child "DFID", OST-index %u, stripe-index %u, owner %u:%u. %s",
+ PFID(lfsck_dto2fid(parent)), PFID(lfsck_dto2fid(child)),
+ llr->llr_ost_idx, llr->llr_lov_idx, pla->la_uid, pla->la_gid,
+ create ? "Create the lost OST-object as required.\n" :
+ "Keep the MDT-object there by default.\n");
+
+ if (!create)
+ RETURN(1);
+
+ memset(cla, 0, sizeof(*cla));
+ cla->la_uid = pla->la_uid;
+ cla->la_gid = pla->la_gid;
+ cla->la_mode = S_IFREG | 0666;
+ cla->la_valid = LA_TYPE | LA_MODE | LA_UID | LA_GID |
+ LA_ATIME | LA_MTIME | LA_CTIME;
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ RETURN(rc);
+
+ handle = dt_trans_create(env, dev);
+ if (IS_ERR(handle))
+ GOTO(unlock1, rc = PTR_ERR(handle));
+
+ hint->dah_parent = NULL;
+ hint->dah_mode = 0;
+ pfid->ff_parent.f_seq = cpu_to_le64(tfid->f_seq);
+ pfid->ff_parent.f_oid = cpu_to_le32(tfid->f_oid);
+ /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
+ * MDT-object's FID::f_ver, instead it is the OST-object index in its
+ * parent MDT-object's layout EA. */
+ pfid->ff_parent.f_stripe_idx = cpu_to_le32(llr->llr_lov_idx);
+ buf = lfsck_buf_get(env, pfid, sizeof(struct filter_fid));
+
+ rc = dt_declare_create(env, child, cla, hint, NULL, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_declare_xattr_set(env, child, buf, XATTR_NAME_FID,
+ LU_XATTR_CREATE, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start(env, dev, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_read_lock(env, parent, 0);
+ if (unlikely(lu_object_is_dying(parent->do_lu.lo_header)))
+ GOTO(unlock2, rc = 1);
+
+ rc = dt_create(env, child, cla, hint, NULL, handle);
+ if (rc != 0)
+ GOTO(unlock2, rc);
+
+ rc = dt_xattr_set(env, child, buf, XATTR_NAME_FID, LU_XATTR_CREATE,
+ handle, BYPASS_CAPA);
+
+ GOTO(unlock2, rc);
+
+unlock2:
+ dt_read_unlock(env, parent);
+
+stop:
+ rc = lfsck_layout_trans_stop(env, dev, handle, rc);
+
+unlock1:
+ lfsck_layout_unlock(&lh);
+
+ return rc;
+}
+
+/* If the OST-object does not recognize the MDT-object as its parent, and
+ * there is no other MDT-object claims as its parent, then just trust the
+ * given MDT-object as its parent. So update the OST-object filter_fid. */
+static int lfsck_layout_repair_unmatched_pair(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_layout_req *llr,
+ const struct lu_attr *pla)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct filter_fid *pfid = &info->lti_new_pfid;
+ struct lu_attr *tla = &info->lti_la3;
+ struct dt_object *parent = llr->llr_parent->llo_obj;
+ struct dt_object *child = llr->llr_child;
+ struct dt_device *dev = lfsck_obj2dt_dev(child);
+ const struct lu_fid *tfid = lu_object_fid(&parent->do_lu);
+ struct thandle *handle;
+ struct lu_buf *buf;
+ struct lustre_handle lh = { 0 };
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_LFSCK, "Repair unmatched MDT-OST pair for: parent "DFID
+ ", child "DFID", OST-index %u, stripe-index %u, owner %u:%u\n",
+ PFID(lfsck_dto2fid(parent)), PFID(lfsck_dto2fid(child)),
+ llr->llr_ost_idx, llr->llr_lov_idx, pla->la_uid, pla->la_gid);
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ RETURN(rc);
+
+ handle = dt_trans_create(env, dev);
+ if (IS_ERR(handle))
+ GOTO(unlock1, rc = PTR_ERR(handle));
+
+ pfid->ff_parent.f_seq = cpu_to_le64(tfid->f_seq);
+ pfid->ff_parent.f_oid = cpu_to_le32(tfid->f_oid);
+ /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
+ * MDT-object's FID::f_ver, instead it is the OST-object index in its
+ * parent MDT-object's layout EA. */
+ pfid->ff_parent.f_stripe_idx = cpu_to_le32(llr->llr_lov_idx);
+ buf = lfsck_buf_get(env, pfid, sizeof(struct filter_fid));
+
+ rc = dt_declare_xattr_set(env, child, buf, XATTR_NAME_FID, 0, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ tla->la_valid = LA_UID | LA_GID;
+ tla->la_uid = pla->la_uid;
+ tla->la_gid = pla->la_gid;
+ rc = dt_declare_attr_set(env, child, tla, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start(env, dev, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, parent, 0);
+ if (unlikely(lu_object_is_dying(parent->do_lu.lo_header)))
+ GOTO(unlock2, rc = 1);
+
+ rc = dt_xattr_set(env, child, buf, XATTR_NAME_FID, 0, handle,
+ BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(unlock2, rc);
+
+ /* Get the latest parent's owner. */
+ rc = dt_attr_get(env, parent, tla, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(unlock2, rc);
+
+ tla->la_valid = LA_UID | LA_GID;
+ rc = dt_attr_set(env, child, tla, handle, BYPASS_CAPA);
+
+ GOTO(unlock2, rc);
+
+unlock2:
+ dt_write_unlock(env, parent);
+
+stop:
+ rc = lfsck_layout_trans_stop(env, dev, handle, rc);
+
+unlock1:
+ lfsck_layout_unlock(&lh);
+
+ return rc;
+}
+
+/* If there are more than one MDT-objects claim as the OST-object's parent,
+ * and the OST-object only recognizes one of them, then we need to generate
+ * new OST-object(s) with new fid(s) for the non-recognized MDT-object(s). */
+static int lfsck_layout_repair_multiple_references(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_layout_req *llr,
+ struct lu_attr *la,
+ struct lu_buf *buf)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct dt_allocation_hint *hint = &info->lti_hint;
+ struct dt_object_format *dof = &info->lti_dof;
+ struct dt_device *pdev = com->lc_lfsck->li_next;
+ struct ost_id *oi = &info->lti_oi;
+ struct dt_object *parent = llr->llr_parent->llo_obj;
+ struct dt_device *cdev = lfsck_obj2dt_dev(llr->llr_child);
+ struct dt_object *child = NULL;
+ struct lu_device *d = &cdev->dd_lu_dev;
+ struct lu_object *o = NULL;
+ struct thandle *handle;
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ struct lustre_handle lh = { 0 };
+ __u32 magic;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_LFSCK, "Repair multiple references for: parent "DFID
+ ", OST-index %u, stripe-index %u, owner %u:%u\n",
+ PFID(lfsck_dto2fid(parent)), llr->llr_ost_idx,
+ llr->llr_lov_idx, la->la_uid, la->la_gid);
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ RETURN(rc);
+
+ handle = dt_trans_create(env, pdev);
+ if (IS_ERR(handle))
+ GOTO(unlock1, rc = PTR_ERR(handle));
+
+ o = lu_object_anon(env, d, NULL);
+ if (IS_ERR(o))
+ GOTO(stop, rc = PTR_ERR(o));
+
+ child = container_of(o, struct dt_object, do_lu);
o = lu_object_locate(o->lo_header, d->ld_type);
if (unlikely(o == NULL))
GOTO(stop, rc = -EINVAL);
GOTO(unlock2, rc = 0);
lmm = buf->lb_buf;
- rc = lfsck_layout_verify_header(lmm);
- if (rc != 0)
- GOTO(unlock2, rc);
-
/* Someone change layout during the LFSCK, no need to repair then. */
if (le16_to_cpu(lmm->lmm_layout_gen) != llr->llr_parent->llo_gen)
GOTO(unlock2, rc = 0);
* be updated also. */
magic = le32_to_cpu(lmm->lmm_magic);
if (magic == LOV_MAGIC_V1) {
- objs = &(lmm->lmm_objects[0]);
+ objs = &lmm->lmm_objects[0];
} else {
LASSERT(magic == LOV_MAGIC_V3);
objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
GOTO(out, rc);
lmm = buf->lb_buf;
- rc = lfsck_layout_verify_header(lmm);
- if (rc != 0)
- GOTO(out, rc);
-
- /* Currently, we only support LOV_MAGIC_V1/LOV_MAGIC_V3 which has
- * been verified in lfsck_layout_verify_header() already. If some
- * new magic introduced in the future, then layout LFSCK needs to
- * be updated also. */
magic = le32_to_cpu(lmm->lmm_magic);
if (magic == LOV_MAGIC_V1) {
- objs = &(lmm->lmm_objects[0]);
+ objs = &lmm->lmm_objects[0];
} else {
LASSERT(magic == LOV_MAGIC_V3);
objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
struct lu_fid *tfid = &info->lti_fid2;
struct ost_id *oi = &info->lti_oi;
+ if (lovea_slot_is_dummy(objs))
+ continue;
+
ostid_le_to_cpu(&objs->l_ost_oi, oi);
ostid_to_fid(tfid, oi, le32_to_cpu(objs->l_ost_idx));
if (lu_fid_eq(cfid, tfid)) {
fid_zero(pfid);
} else {
fid_le_to_cpu(pfid, &pea->ff_parent);
- /* OST-object does not save parent FID::f_ver, instead,
- * the OST-object index in the parent MDT-object layout
- * EA reuses the pfid->f_ver. */
- idx = pfid->f_ver;
+ /* Currently, the filter_fid::ff_parent::f_ver is not the
+ * real parent MDT-object's FID::f_ver, instead it is the
+ * OST-object index in its parent MDT-object's layout EA. */
+ idx = pfid->f_stripe_idx;
pfid->f_ver = 0;
}
switch (type) {
case LLIT_DANGLING:
- memset(cla, 0, sizeof(*cla));
- cla->la_uid = pla->la_uid;
- cla->la_gid = pla->la_gid;
- cla->la_mode = S_IFREG | 0666;
- cla->la_valid = LA_TYPE | LA_MODE | LA_UID | LA_GID |
- LA_ATIME | LA_MTIME | LA_CTIME;
- rc = lfsck_layout_recreate_ostobj(env, com, llr, cla);
+ rc = lfsck_layout_repair_dangling(env, com, llr, pla);
break;
case LLIT_UNMATCHED_PAIR:
rc = lfsck_layout_repair_unmatched_pair(env, com, llr, pla);
out:
down_write(&com->lc_sem);
if (rc < 0) {
- /* If cannot touch the target server,
- * mark the LFSCK as INCOMPLETE. */
- if (rc == -ENOTCONN || rc == -ESHUTDOWN || rc == -ETIMEDOUT ||
- rc == -EHOSTDOWN || rc == -EHOSTUNREACH) {
- CERROR("%s: Fail to take with OST %x: rc = %d.\n",
+ struct lfsck_layout_master_data *llmd = com->lc_data;
+
+ if (unlikely(llmd->llmd_exit)) {
+ rc = 0;
+ } else if (rc == -ENOTCONN || rc == -ESHUTDOWN ||
+ rc == -ETIMEDOUT || rc == -EHOSTDOWN ||
+ rc == -EHOSTUNREACH) {
+ /* If cannot touch the target server,
+ * mark the LFSCK as INCOMPLETE. */
+ CERROR("%s: Fail to talk with OST %x: rc = %d.\n",
lfsck_lfsck2name(lfsck), llr->llr_ost_idx, rc);
lo->ll_flags |= LF_INCOMPLETE;
lo->ll_objs_skipped++;
rc = 0;
} else {
- lo->ll_objs_failed_phase1++;
+ lfsck_layout_record_failure(env, lfsck, lo);
}
} else if (rc > 0) {
LASSERTF(type > LLIT_NONE && type <= LLIT_MAX,
"unknown type = %d\n", type);
lo->ll_objs_repaired[type - 1]++;
+ if (bk->lb_param & LPF_DRYRUN &&
+ unlikely(lo->ll_pos_first_inconsistent == 0))
+ lo->ll_pos_first_inconsistent =
+ lfsck->li_obj_oit->do_index_ops->dio_it.store(env,
+ lfsck->li_di_oit);
}
up_write(&com->lc_sem);
memset(lr, 0, sizeof(*lr));
lr->lr_event = LE_START;
lr->lr_valid = LSV_SPEED_LIMIT | LSV_ERROR_HANDLE | LSV_DRYRUN |
- LSV_ASYNC_WINDOWS;
+ LSV_ASYNC_WINDOWS | LSV_CREATE_OSTOBJ;
lr->lr_speed = bk->lb_speed_limit;
lr->lr_version = bk->lb_version;
lr->lr_param = bk->lb_param;
while (!list_empty(&llmd->llmd_req_list)) {
bool wakeup = false;
- if (unlikely(llmd->llmd_exit))
+ if (unlikely(llmd->llmd_exit ||
+ !thread_is_running(mthread)))
GOTO(cleanup1, rc = llmd->llmd_post_result);
llr = list_entry(llmd->llmd_req_list.next,
rc = lfsck_layout_assistant_handle_one(env, com, llr);
spin_lock(&llmd->llmd_lock);
list_del_init(&llr->llr_list);
- if (bk->lb_async_windows != 0 &&
- llmd->llmd_prefetched >= bk->lb_async_windows)
- wakeup = true;
-
llmd->llmd_prefetched--;
+ /* Wake up the main engine thread only when the list
+ * is empty or half of the prefetched items have been
+ * handled to avoid too frequent thread schedule. */
+ if (llmd->llmd_prefetched == 0 ||
+ (bk->lb_async_windows != 0 &&
+ bk->lb_async_windows / 2 ==
+ llmd->llmd_prefetched))
+ wakeup = true;
spin_unlock(&llmd->llmd_lock);
if (wakeup)
wake_up_all(&mthread->t_ctl_waitq);
GOTO(cleanup1, rc);
}
- /* Wakeup the master engine if it is waiting in checkpoint. */
- wake_up_all(&mthread->t_ctl_waitq);
-
l_wait_event(athread->t_ctl_waitq,
!lfsck_layout_req_empty(llmd) ||
llmd->llmd_exit ||
llmd->llmd_in_double_scan = 1;
wake_up_all(&mthread->t_ctl_waitq);
+ com->lc_new_checked = 0;
+ com->lc_new_scanned = 0;
+ com->lc_time_last_checkpoint = cfs_time_current();
+ com->lc_time_next_checkpoint =
+ com->lc_time_last_checkpoint +
+ cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
+
+ /* flush all async updating before handling orphan. */
+ dt_sync(env, lfsck->li_next);
+
while (llmd->llmd_in_double_scan) {
struct lfsck_tgt_descs *ltds =
&lfsck->li_ost_descs;
<d->ltd_layout_phase_list);
spin_unlock(<ds->ltd_lock);
- rc = lfsck_layout_scan_orphan(env, com,
- ltd);
- if (rc != 0 &&
- bk->lb_param & LPF_FAILOUT)
- GOTO(cleanup2, rc);
+ if (bk->lb_param & LPF_ALL_TGT) {
+ rc = lfsck_layout_scan_orphan(
+ env, com, ltd);
+ if (rc != 0 &&
+ bk->lb_param & LPF_FAILOUT)
+ GOTO(cleanup2, rc);
+ }
if (unlikely(llmd->llmd_exit ||
!thread_is_running(mthread)))
/* Under force exit case, some requests may be just freed without
* verification, those objects should be re-handled when next run.
* So not update the on-disk tracing file under such case. */
- if (!llmd->llmd_exit)
+ if (llmd->llmd_in_double_scan && !llmd->llmd_exit)
rc1 = lfsck_layout_double_scan_result(env, com, rc);
fini:
RETURN_EXIT;
}
+/*
+ * \ret -ENODATA: unrecognized stripe
+ * \ret = 0 : recognized stripe
+ * \ret < 0 : other failures
+ */
+static int lfsck_layout_master_check_pairs(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lu_fid *cfid,
+ struct lu_fid *pfid)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_buf *buf = &info->lti_big_buf;
+ struct ost_id *oi = &info->lti_oi;
+ struct dt_object *obj;
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ __u32 idx = pfid->f_stripe_idx;
+ __u32 magic;
+ int rc = 0;
+ int i;
+ __u16 count;
+ ENTRY;
+
+ pfid->f_ver = 0;
+ obj = lfsck_object_find_by_dev(env, com->lc_lfsck->li_bottom, pfid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ dt_read_lock(env, obj, 0);
+ if (unlikely(!dt_object_exists(obj)))
+ GOTO(unlock, rc = -ENOENT);
+
+ rc = lfsck_layout_get_lovea(env, obj, buf, NULL);
+ if (rc < 0)
+ GOTO(unlock, rc);
+
+ if (rc == 0)
+ GOTO(unlock, rc = -ENODATA);
+
+ lmm = buf->lb_buf;
+ rc = lfsck_layout_verify_header(lmm);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* Currently, we only support LOV_MAGIC_V1/LOV_MAGIC_V3 which has
+ * been verified in lfsck_layout_verify_header() already. If some
+ * new magic introduced in the future, then layout LFSCK needs to
+ * be updated also. */
+ magic = le32_to_cpu(lmm->lmm_magic);
+ if (magic == LOV_MAGIC_V1) {
+ objs = &lmm->lmm_objects[0];
+ } else {
+ LASSERT(magic == LOV_MAGIC_V3);
+ objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
+ }
+
+ fid_to_ostid(cfid, oi);
+ count = le16_to_cpu(lmm->lmm_stripe_count);
+ for (i = 0; i < count; i++, objs++) {
+ struct ost_id oi2;
+
+ ostid_le_to_cpu(&objs->l_ost_oi, &oi2);
+ if (memcmp(oi, &oi2, sizeof(*oi)) == 0)
+ GOTO(unlock, rc = (i != idx ? -ENODATA : 0));
+ }
+
+ GOTO(unlock, rc = -ENODATA);
+
+unlock:
+ dt_read_unlock(env, obj);
+ lu_object_put(env, &obj->do_lu);
+
+ return rc;
+}
+
+/*
+ * The LFSCK-on-OST will ask the LFSCK-on-MDT to check whether the given
+ * MDT-object/OST-object pairs match or not to aviod transfer MDT-object
+ * layout EA from MDT to OST. On one hand, the OST no need to understand
+ * the layout EA structure; on the other hand, it may cause trouble when
+ * transfer large layout EA from MDT to OST via normal OUT RPC.
+ *
+ * \ret > 0: unrecognized stripe
+ * \ret = 0: recognized stripe
+ * \ret < 0: other failures
+ */
+static int lfsck_layout_slave_check_pairs(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lu_fid *cfid,
+ struct lu_fid *pfid)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct obd_device *obd = lfsck->li_obd;
+ struct seq_server_site *ss =
+ lu_site2seq(lfsck->li_bottom->dd_lu_dev.ld_site);
+ struct obd_export *exp = NULL;
+ struct ptlrpc_request *req = NULL;
+ struct lfsck_request *lr;
+ struct lu_seq_range range = { 0 };
+ int rc = 0;
+ ENTRY;
+
+ if (unlikely(fid_is_idif(pfid)))
+ RETURN(1);
+
+ fld_range_set_any(&range);
+ rc = fld_server_lookup(env, ss->ss_server_fld, fid_seq(pfid), &range);
+ if (rc != 0)
+ RETURN(rc == -ENOENT ? 1 : rc);
+
+ if (unlikely(!fld_range_is_mdt(&range)))
+ RETURN(1);
+
+ exp = lustre_find_lwp_by_index(obd->obd_name, range.lsr_index);
+ if (unlikely(exp == NULL))
+ RETURN(1);
+
+ if (!(exp_connect_flags(exp) & OBD_CONNECT_LFSCK))
+ GOTO(out, rc = -EOPNOTSUPP);
+
+ req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_LFSCK_NOTIFY);
+ if (req == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, LFSCK_NOTIFY);
+ if (rc != 0) {
+ ptlrpc_request_free(req);
+
+ GOTO(out, rc);
+ }
+
+ lr = req_capsule_client_get(&req->rq_pill, &RMF_LFSCK_REQUEST);
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = LE_PAIRS_VERIFY;
+ lr->lr_active = LT_LAYOUT;
+ lr->lr_fid = *cfid; /* OST-object itself FID. */
+ lr->lr_fid2 = *pfid; /* The claimed parent FID. */
+
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
+ ptlrpc_req_finished(req);
+
+ if (rc == -ENOENT || rc == -ENODATA)
+ rc = 1;
+
+ GOTO(out, rc);
+
+out:
+ if (exp != NULL)
+ class_export_put(exp);
+
+ return rc;
+}
+
+static int lfsck_layout_slave_repair_pfid(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_request *lr)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct filter_fid *ff = &info->lti_new_pfid;
+ struct lu_buf *buf;
+ struct dt_device *dev = com->lc_lfsck->li_bottom;
+ struct dt_object *obj;
+ struct thandle *th = NULL;
+ int rc = 0;
+ ENTRY;
+
+ obj = lfsck_object_find_by_dev(env, dev, &lr->lr_fid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ fid_cpu_to_le(&ff->ff_parent, &lr->lr_fid2);
+ buf = lfsck_buf_get(env, ff, sizeof(*ff));
+ dt_write_lock(env, obj, 0);
+ if (unlikely(!dt_object_exists(obj)))
+ GOTO(unlock, rc = 0);
+
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
+
+ rc = dt_declare_xattr_set(env, obj, buf, XATTR_NAME_FID, 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_xattr_set(env, obj, buf, XATTR_NAME_FID, 0, th, BYPASS_CAPA);
+
+ GOTO(stop, rc);
+
+stop:
+ dt_trans_stop(env, dev, th);
+
+unlock:
+ dt_write_unlock(env, obj);
+ lu_object_put(env, &obj->do_lu);
+
+ return rc;
+}
+
/* layout APIs */
static int lfsck_layout_reset(const struct lu_env *env,
down_write(&com->lc_sem);
if (new_checked)
com->lc_new_checked++;
- lo->ll_objs_failed_phase1++;
- if (lo->ll_pos_first_inconsistent == 0) {
- struct lfsck_instance *lfsck = com->lc_lfsck;
-
- lo->ll_pos_first_inconsistent =
- lfsck->li_obj_oit->do_index_ops->dio_it.store(env,
- lfsck->li_di_oit);
- }
+ lfsck_layout_record_failure(env, com->lc_lfsck, lo);
up_write(&com->lc_sem);
}
int rc;
rc = lfsck_layout_reset(env, com, false);
+ if (rc == 0)
+ rc = lfsck_set_param(env, lfsck, start, true);
+
if (rc != 0)
return rc;
}
lo->ll_objs_repaired[i] = 0;
pos->lp_oit_cookie = lo->ll_pos_first_inconsistent;
+ fid_zero(&com->lc_fid_latest_scanned_phase2);
}
} else {
lo->ll_status = LS_SCANNING_PHASE1;
struct lfsck_start_param *lsp)
{
struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_layout *lo = com->lc_file_ram;
struct lfsck_start *start = lsp->lsp_start;
int rc;
rc = lfsck_layout_prep(env, com, start);
- if (rc != 0 || !lsp->lsp_index_valid)
+ if (rc != 0)
return rc;
+ if (lo->ll_flags & LF_CRASHED_LASTID &&
+ list_empty(&llsd->llsd_master_list)) {
+ LASSERT(lfsck->li_out_notify != NULL);
+
+ lfsck->li_out_notify(env, lfsck->li_out_notify_data,
+ LE_LASTID_REBUILDING);
+ }
+
+ if (!lsp->lsp_index_valid)
+ return 0;
+
rc = lfsck_layout_llst_add(llsd, lsp->lsp_index);
if (rc == 0 && start != NULL && start->ls_flags & LPF_ORPHAN) {
LASSERT(!llsd->llsd_rbtree_valid);
struct ptlrpc_thread *mthread = &lfsck->li_thread;
struct ptlrpc_thread *athread = &llmd->llmd_thread;
struct lfsck_thread_args *lta;
- long rc;
+ struct task_struct *task;
+ int rc;
ENTRY;
rc = lfsck_layout_prep(env, com, lsp->lsp_start);
if (IS_ERR(lta))
RETURN(PTR_ERR(lta));
- rc = PTR_ERR(kthread_run(lfsck_layout_assistant, lta, "lfsck_layout"));
- if (IS_ERR_VALUE(rc)) {
+ task = kthread_run(lfsck_layout_assistant, lta, "lfsck_layout");
+ if (IS_ERR(task)) {
+ rc = PTR_ERR(task);
CERROR("%s: Cannot start LFSCK layout assistant thread: "
- "rc = %ld\n", lfsck_lfsck2name(lfsck), rc);
+ "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
lfsck_thread_args_fini(lta);
} else {
struct l_wait_info lwi = { 0 };
* be updated also. */
magic = le32_to_cpu(lmm->lmm_magic);
if (magic == LOV_MAGIC_V1) {
- objs = &(lmm->lmm_objects[0]);
+ objs = &lmm->lmm_objects[0];
} else {
LASSERT(magic == LOV_MAGIC_V3);
objs = &((struct lov_mds_md_v3 *)lmm)->lmm_objects[0];
le32_to_cpu(objs->l_ost_idx);
bool wakeup = false;
+ if (unlikely(lovea_slot_is_dummy(objs)))
+ continue;
+
l_wait_event(mthread->t_ctl_waitq,
bk->lb_async_windows == 0 ||
llmd->llmd_prefetched < bk->lb_async_windows ||
ostid_to_fid(fid, oi, index);
tgt = lfsck_tgt_get(ltds, index);
if (unlikely(tgt == NULL)) {
- CERROR("%s: Cannot talk with OST %x which is not join "
+ CERROR("%s: Cannot talk with OST %x which did not join "
"the layout LFSCK.\n",
lfsck_lfsck2name(lfsck), index);
lo->ll_flags |= LF_INCOMPLETE;
down_write(&com->lc_sem);
com->lc_new_checked++;
if (rc < 0)
- lo->ll_objs_failed_phase1++;
+ lfsck_layout_record_failure(env, lfsck, lo);
up_write(&com->lc_sem);
if (cobj != NULL && !IS_ERR(cobj))
buf->lb_len = rc;
lmm = buf->lb_buf;
rc = lfsck_layout_verify_header(lmm);
+ /* If the LOV EA crashed, then it is possible to be rebuilt later
+ * when handle orphan OST-objects. */
if (rc != 0)
GOTO(out, rc);
down_write(&com->lc_sem);
com->lc_new_checked++;
if (rc < 0)
- lo->ll_objs_failed_phase1++;
+ lfsck_layout_record_failure(env, lfsck, lo);
up_write(&com->lc_sem);
}
buf->lb_len = buflen;
LASSERT(llsd != NULL);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY5) &&
+ cfs_fail_val == lfsck_dev_idx(lfsck->li_bottom)) {
+ struct l_wait_info lwi = LWI_TIMEOUT(cfs_time_seconds(1),
+ NULL, NULL);
+ struct ptlrpc_thread *thread = &lfsck->li_thread;
+
+ l_wait_event(thread->t_ctl_waitq,
+ !thread_is_running(thread),
+ &lwi);
+ }
+
lfsck_rbtree_update_bitmap(env, com, fid, false);
down_write(&com->lc_sem);
const struct dt_it_ops *iops;
cfs_duration_t duration = cfs_time_current() -
lfsck->li_time_last_checkpoint;
- __u64 checked = lo->ll_objs_checked_phase1 + com->lc_new_checked;
+ __u64 checked = lo->ll_objs_checked_phase1 +
+ com->lc_new_checked;
__u64 speed = checked;
__u64 new_checked = com->lc_new_checked * HZ;
__u32 rtime = lo->ll_run_time_phase1 +
buf += rc;
len -= rc;
+ } else if (lo->ll_status == LS_SCANNING_PHASE2) {
+ cfs_duration_t duration = cfs_time_current() -
+ lfsck->li_time_last_checkpoint;
+ __u64 checked = lo->ll_objs_checked_phase2 +
+ com->lc_new_checked;
+ __u64 speed1 = lo->ll_objs_checked_phase1;
+ __u64 speed2 = checked;
+ __u64 new_checked = com->lc_new_checked * HZ;
+ __u32 rtime = lo->ll_run_time_phase2 +
+ cfs_duration_sec(duration + HALF_SEC);
+
+ if (duration != 0)
+ do_div(new_checked, duration);
+ if (lo->ll_run_time_phase1 != 0)
+ do_div(speed1, lo->ll_run_time_phase1);
+ if (rtime != 0)
+ do_div(speed2, rtime);
+ rc = snprintf(buf, len,
+ "checked_phase1: "LPU64"\n"
+ "checked_phase2: "LPU64"\n"
+ "run_time_phase1: %u seconds\n"
+ "run_time_phase2: %u seconds\n"
+ "average_speed_phase1: "LPU64" items/sec\n"
+ "average_speed_phase2: "LPU64" items/sec\n"
+ "real-time_speed_phase1: N/A\n"
+ "real-time_speed_phase2: "LPU64" items/sec\n"
+ "current_position: "DFID"\n",
+ lo->ll_objs_checked_phase1,
+ checked,
+ lo->ll_run_time_phase1,
+ rtime,
+ speed1,
+ speed2,
+ new_checked,
+ PFID(&com->lc_fid_latest_scanned_phase2));
+ if (rc <= 0)
+ goto out;
+
+ buf += rc;
+ len -= rc;
} else {
- /* XXX: LS_SCANNING_PHASE2 will be handled in the future. */
__u64 speed1 = lo->ll_objs_checked_phase1;
__u64 speed2 = lo->ll_objs_checked_phase2;
bool fail = false;
ENTRY;
+ if (lr->lr_event == LE_PAIRS_VERIFY) {
+ int rc;
+
+ rc = lfsck_layout_master_check_pairs(env, com, &lr->lr_fid,
+ &lr->lr_fid2);
+
+ RETURN(rc);
+ }
+
if (lr->lr_event != LE_PHASE1_DONE &&
lr->lr_event != LE_PHASE2_DONE &&
lr->lr_event != LE_PEER_EXIT)
if (ltd == NULL) {
spin_unlock(<ds->ltd_lock);
- RETURN(-ENODEV);
+ RETURN(-ENXIO);
}
list_del_init(<d->ltd_layout_phase_list);
struct lfsck_instance *lfsck = com->lc_lfsck;
struct lfsck_layout_slave_data *llsd = com->lc_data;
struct lfsck_layout_slave_target *llst;
+ int rc;
ENTRY;
- if (lr->lr_event == LE_FID_ACCESSED) {
- lfsck_rbtree_update_bitmap(env, com, &lr->lr_fid, true);
+ switch (lr->lr_event) {
+ case LE_FID_ACCESSED:
+ lfsck_rbtree_update_bitmap(env, com, &lr->lr_fid, true);
+ RETURN(0);
+ case LE_CONDITIONAL_DESTROY:
+ rc = lfsck_layout_slave_conditional_destroy(env, com, lr);
+ RETURN(rc);
+ case LE_PAIRS_VERIFY: {
+ lr->lr_status = LPVS_INIT;
+ /* Firstly, if the MDT-object which is claimed via OST-object
+ * local stored PFID xattr recognizes the OST-object, then it
+ * must be that the client given PFID is wrong. */
+ rc = lfsck_layout_slave_check_pairs(env, com, &lr->lr_fid,
+ &lr->lr_fid3);
+ if (rc <= 0)
+ RETURN(0);
+
+ lr->lr_status = LPVS_INCONSISTENT;
+ /* The OST-object local stored PFID xattr is stale. We need to
+ * check whether the MDT-object that is claimed via the client
+ * given PFID information recognizes the OST-object or not. If
+ * matches, then need to update the OST-object's PFID xattr. */
+ rc = lfsck_layout_slave_check_pairs(env, com, &lr->lr_fid,
+ &lr->lr_fid2);
+ /* For rc < 0 case:
+ * We are not sure whether the client given PFID information
+ * is correct or not, do nothing to avoid improper fixing.
+ *
+ * For rc > 0 case:
+ * The client given PFID information is also invalid, we can
+ * NOT fix the OST-object inconsistency.
+ */
+ if (rc != 0)
+ RETURN(rc);
- RETURN(0);
- }
+ lr->lr_status = LPVS_INCONSISTENT_TOFIX;
+ rc = lfsck_layout_slave_repair_pfid(env, com, lr);
- if (lr->lr_event != LE_PHASE2_DONE && lr->lr_event != LE_PEER_EXIT)
+ RETURN(rc);
+ }
+ case LE_PHASE2_DONE:
+ case LE_PEER_EXIT:
+ break;
+ default:
RETURN(-EINVAL);
+ }
- llst = lfsck_layout_llst_find_and_del(llsd, lr->lr_index);
+ llst = lfsck_layout_llst_find_and_del(llsd, lr->lr_index, true);
if (llst == NULL)
- RETURN(-ENODEV);
+ RETURN(-ENXIO);
lfsck_layout_llst_put(llst);
if (list_empty(&llsd->llsd_master_list))
spin_lock(&lfsck->li_lock);
if (rc == 0 && !thread_is_running(&lfsck->li_thread)) {
spin_unlock(&lfsck->li_lock);
- llst = lfsck_layout_llst_find_and_del(llsd, lsp->lsp_index);
+ llst = lfsck_layout_llst_find_and_del(llsd, lsp->lsp_index,
+ true);
if (llst != NULL)
lfsck_layout_llst_put(llst);
spin_lock(&lfsck->li_lock);
return rc;
}
+
+struct lfsck_orphan_it {
+ struct lfsck_component *loi_com;
+ struct lfsck_rbtree_node *loi_lrn;
+ struct lfsck_layout_slave_target *loi_llst;
+ struct lu_fid loi_key;
+ struct lu_orphan_rec loi_rec;
+ __u64 loi_hash;
+ unsigned int loi_over:1;
+};
+
+static int lfsck_fid_match_idx(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ const struct lu_fid *fid, int idx)
+{
+ struct seq_server_site *ss;
+ struct lu_server_fld *sf;
+ struct lu_seq_range range = { 0 };
+ int rc;
+
+ /* All abnormal cases will be returned to MDT0. */
+ if (!fid_is_norm(fid)) {
+ if (idx == 0)
+ return 1;
+
+ return 0;
+ }
+
+ ss = lu_site2seq(lfsck->li_bottom->dd_lu_dev.ld_site);
+ if (unlikely(ss == NULL))
+ return -ENOTCONN;
+
+ sf = ss->ss_server_fld;
+ LASSERT(sf != NULL);
+
+ fld_range_set_any(&range);
+ rc = fld_server_lookup(env, sf, fid_seq(fid), &range);
+ if (rc != 0)
+ return rc;
+
+ if (!fld_range_is_mdt(&range))
+ return -EINVAL;
+
+ if (range.lsr_index == idx)
+ return 1;
+
+ return 0;
+}
+
+static void lfsck_layout_destroy_orphan(const struct lu_env *env,
+ struct dt_device *dev,
+ struct dt_object *obj)
+{
+ struct thandle *handle;
+ int rc;
+ ENTRY;
+
+ handle = dt_trans_create(env, dev);
+ if (IS_ERR(handle))
+ RETURN_EXIT;
+
+ rc = dt_declare_ref_del(env, obj, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_declare_destroy(env, obj, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, obj, 0);
+ rc = dt_ref_del(env, obj, handle);
+ if (rc == 0)
+ rc = dt_destroy(env, obj, handle);
+ dt_write_unlock(env, obj);
+
+ GOTO(stop, rc);
+
+stop:
+ dt_trans_stop(env, dev, handle);
+
+ RETURN_EXIT;
+}
+
+static int lfsck_orphan_index_lookup(const struct lu_env *env,
+ struct dt_object *dt,
+ struct dt_rec *rec,
+ const struct dt_key *key,
+ struct lustre_capa *capa)
+{
+ return -EOPNOTSUPP;
+}
+
+static int lfsck_orphan_index_declare_insert(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_rec *rec,
+ const struct dt_key *key,
+ struct thandle *handle)
+{
+ return -EOPNOTSUPP;
+}
+
+static int lfsck_orphan_index_insert(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_rec *rec,
+ const struct dt_key *key,
+ struct thandle *handle,
+ struct lustre_capa *capa,
+ int ignore_quota)
+{
+ return -EOPNOTSUPP;
+}
+
+static int lfsck_orphan_index_declare_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *handle)
+{
+ return -EOPNOTSUPP;
+}
+
+static int lfsck_orphan_index_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *handle,
+ struct lustre_capa *capa)
+{
+ return -EOPNOTSUPP;
+}
+
+static struct dt_it *lfsck_orphan_it_init(const struct lu_env *env,
+ struct dt_object *dt,
+ __u32 attr,
+ struct lustre_capa *capa)
+{
+ struct dt_device *dev = lu2dt_dev(dt->do_lu.lo_dev);
+ struct lfsck_instance *lfsck;
+ struct lfsck_component *com = NULL;
+ struct lfsck_layout_slave_data *llsd;
+ struct lfsck_orphan_it *it = NULL;
+ int rc = 0;
+ ENTRY;
+
+ lfsck = lfsck_instance_find(dev, true, false);
+ if (unlikely(lfsck == NULL))
+ RETURN(ERR_PTR(-ENXIO));
+
+ com = lfsck_component_find(lfsck, LT_LAYOUT);
+ if (unlikely(com == NULL))
+ GOTO(out, rc = -ENOENT);
+
+ llsd = com->lc_data;
+ if (!llsd->llsd_rbtree_valid)
+ GOTO(out, rc = -ESRCH);
+
+ OBD_ALLOC_PTR(it);
+ if (it == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ it->loi_llst = lfsck_layout_llst_find_and_del(llsd, attr, false);
+ if (it->loi_llst == NULL)
+ GOTO(out, rc = -ENXIO);
+
+ if (dev->dd_record_fid_accessed) {
+ /* The first iteration against the rbtree, scan the whole rbtree
+ * to remove the nodes which do NOT need to be handled. */
+ write_lock(&llsd->llsd_rb_lock);
+ if (dev->dd_record_fid_accessed) {
+ struct rb_node *node;
+ struct rb_node *next;
+ struct lfsck_rbtree_node *lrn;
+
+ /* No need to record the fid accessing anymore. */
+ dev->dd_record_fid_accessed = 0;
+
+ node = rb_first(&llsd->llsd_rb_root);
+ while (node != NULL) {
+ next = rb_next(node);
+ lrn = rb_entry(node, struct lfsck_rbtree_node,
+ lrn_node);
+ if (atomic_read(&lrn->lrn_known_count) <=
+ atomic_read(&lrn->lrn_accessed_count)) {
+ rb_erase(node, &llsd->llsd_rb_root);
+ lfsck_rbtree_free(lrn);
+ }
+ node = next;
+ }
+ }
+ write_unlock(&llsd->llsd_rb_lock);
+ }
+
+ /* read lock the rbtree when init, and unlock when fini */
+ read_lock(&llsd->llsd_rb_lock);
+ it->loi_com = com;
+ com = NULL;
+
+ GOTO(out, rc = 0);
+
+out:
+ if (com != NULL)
+ lfsck_component_put(env, com);
+ lfsck_instance_put(env, lfsck);
+ if (rc != 0) {
+ if (it != NULL)
+ OBD_FREE_PTR(it);
+
+ it = (struct lfsck_orphan_it *)ERR_PTR(rc);
+ }
+
+ return (struct dt_it *)it;
+}
+
+static void lfsck_orphan_it_fini(const struct lu_env *env,
+ struct dt_it *di)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+ struct lfsck_component *com = it->loi_com;
+ struct lfsck_layout_slave_data *llsd;
+ struct lfsck_layout_slave_target *llst;
+
+ if (com != NULL) {
+ llsd = com->lc_data;
+ read_unlock(&llsd->llsd_rb_lock);
+ llst = it->loi_llst;
+ LASSERT(llst != NULL);
+
+ /* Save the key and hash for iterate next. */
+ llst->llst_fid = it->loi_key;
+ llst->llst_hash = it->loi_hash;
+ lfsck_layout_llst_put(llst);
+ lfsck_component_put(env, com);
+ }
+ OBD_FREE_PTR(it);
+}
+
+/**
+ * \retval +1: the iteration finished
+ * \retval 0: on success, not finished
+ * \retval -ve: on error
+ */
+static int lfsck_orphan_it_next(const struct lu_env *env,
+ struct dt_it *di)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct filter_fid_old *pfid = &info->lti_old_pfid;
+ struct lu_attr *la = &info->lti_la;
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+ struct lu_fid *key = &it->loi_key;
+ struct lu_orphan_rec *rec = &it->loi_rec;
+ struct lfsck_component *com = it->loi_com;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct dt_object *obj;
+ struct lfsck_rbtree_node *lrn;
+ int pos;
+ int rc;
+ __u32 save;
+ __u32 idx = it->loi_llst->llst_index;
+ bool exact = false;
+ ENTRY;
+
+ if (it->loi_over)
+ RETURN(1);
+
+again0:
+ lrn = it->loi_lrn;
+ if (lrn == NULL) {
+ lrn = lfsck_rbtree_search(llsd, key, &exact);
+ if (lrn == NULL) {
+ it->loi_over = 1;
+ RETURN(1);
+ }
+
+ it->loi_lrn = lrn;
+ if (!exact) {
+ key->f_seq = lrn->lrn_seq;
+ key->f_oid = lrn->lrn_first_oid;
+ key->f_ver = 0;
+ }
+ } else {
+ key->f_oid++;
+ if (unlikely(key->f_oid == 0)) {
+ key->f_seq++;
+ it->loi_lrn = NULL;
+ goto again0;
+ }
+
+ if (key->f_oid >=
+ lrn->lrn_first_oid + LFSCK_RBTREE_BITMAP_WIDTH) {
+ it->loi_lrn = NULL;
+ goto again0;
+ }
+ }
+
+ if (unlikely(atomic_read(&lrn->lrn_known_count) <=
+ atomic_read(&lrn->lrn_accessed_count))) {
+ struct rb_node *next = rb_next(&lrn->lrn_node);
+
+ while (next != NULL) {
+ lrn = rb_entry(next, struct lfsck_rbtree_node,
+ lrn_node);
+ if (atomic_read(&lrn->lrn_known_count) >
+ atomic_read(&lrn->lrn_accessed_count))
+ break;
+ next = rb_next(next);
+ }
+
+ if (next == NULL) {
+ it->loi_over = 1;
+ RETURN(1);
+ }
+
+ it->loi_lrn = lrn;
+ key->f_seq = lrn->lrn_seq;
+ key->f_oid = lrn->lrn_first_oid;
+ key->f_ver = 0;
+ }
+
+ pos = key->f_oid - lrn->lrn_first_oid;
+
+again1:
+ pos = find_next_bit(lrn->lrn_known_bitmap,
+ LFSCK_RBTREE_BITMAP_WIDTH, pos);
+ if (pos >= LFSCK_RBTREE_BITMAP_WIDTH) {
+ key->f_oid = lrn->lrn_first_oid + pos;
+ if (unlikely(key->f_oid < lrn->lrn_first_oid)) {
+ key->f_seq++;
+ key->f_oid = 0;
+ }
+ it->loi_lrn = NULL;
+ goto again0;
+ }
+
+ if (test_bit(pos, lrn->lrn_accessed_bitmap)) {
+ pos++;
+ goto again1;
+ }
+
+ key->f_oid = lrn->lrn_first_oid + pos;
+ obj = lfsck_object_find(env, lfsck, key);
+ if (IS_ERR(obj)) {
+ rc = PTR_ERR(obj);
+ if (rc == -ENOENT) {
+ pos++;
+ goto again1;
+ }
+ RETURN(rc);
+ }
+
+ dt_read_lock(env, obj, 0);
+ if (!dt_object_exists(obj)) {
+ dt_read_unlock(env, obj);
+ lfsck_object_put(env, obj);
+ pos++;
+ goto again1;
+ }
+
+ rc = dt_attr_get(env, obj, la, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_xattr_get(env, obj, lfsck_buf_get(env, pfid, sizeof(*pfid)),
+ XATTR_NAME_FID, BYPASS_CAPA);
+ if (rc == -ENODATA) {
+ /* For the pre-created OST-object, update the bitmap to avoid
+ * others LFSCK (second phase) iteration to touch it again. */
+ if (la->la_ctime == 0) {
+ if (!test_and_set_bit(pos, lrn->lrn_accessed_bitmap))
+ atomic_inc(&lrn->lrn_accessed_count);
+
+ /* For the race between repairing dangling referenced
+ * MDT-object and unlink the file, it may left orphan
+ * OST-object there. Destroy it now! */
+ if (unlikely(!(la->la_mode & S_ISUID))) {
+ dt_read_unlock(env, obj);
+ lfsck_layout_destroy_orphan(env,
+ lfsck->li_bottom,
+ obj);
+ lfsck_object_put(env, obj);
+ pos++;
+ goto again1;
+ }
+ } else if (idx == 0) {
+ /* If the orphan OST-object has no parent information,
+ * regard it as referenced by the MDT-object on MDT0. */
+ fid_zero(&rec->lor_fid);
+ rec->lor_uid = la->la_uid;
+ rec->lor_gid = la->la_gid;
+ GOTO(out, rc = 0);
+ }
+
+ dt_read_unlock(env, obj);
+ lfsck_object_put(env, obj);
+ pos++;
+ goto again1;
+ }
+
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (rc != sizeof(struct filter_fid) &&
+ rc != sizeof(struct filter_fid_old))
+ GOTO(out, rc = -EINVAL);
+
+ fid_le_to_cpu(&rec->lor_fid, &pfid->ff_parent);
+ /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
+ * MDT-object's FID::f_ver, instead it is the OST-object index in its
+ * parent MDT-object's layout EA. */
+ save = rec->lor_fid.f_stripe_idx;
+ rec->lor_fid.f_ver = 0;
+ rc = lfsck_fid_match_idx(env, lfsck, &rec->lor_fid, idx);
+ /* If the orphan OST-object does not claim the MDT, then next.
+ *
+ * If we do not know whether it matches or not, then return it
+ * to the MDT for further check. */
+ if (rc == 0) {
+ dt_read_unlock(env, obj);
+ lfsck_object_put(env, obj);
+ pos++;
+ goto again1;
+ }
+
+ rec->lor_fid.f_stripe_idx = save;
+ rec->lor_uid = la->la_uid;
+ rec->lor_gid = la->la_gid;
+
+ CDEBUG(D_LFSCK, "%s: return orphan "DFID", PFID "DFID", owner %u:%u\n",
+ lfsck_lfsck2name(com->lc_lfsck), PFID(key), PFID(&rec->lor_fid),
+ rec->lor_uid, rec->lor_gid);
+
+ GOTO(out, rc = 0);
+
+out:
+ dt_read_unlock(env, obj);
+ lfsck_object_put(env, obj);
+ if (rc == 0)
+ it->loi_hash++;
+
+ return rc;
+}
+
+/**
+ * \retval +1: locate to the exactly position
+ * \retval 0: cannot locate to the exactly position,
+ * call next() to move to a valid position.
+ * \retval -ve: on error
+ */
+static int lfsck_orphan_it_get(const struct lu_env *env,
+ struct dt_it *di,
+ const struct dt_key *key)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+ int rc;
+
+ it->loi_key = *(struct lu_fid *)key;
+ rc = lfsck_orphan_it_next(env, di);
+ if (rc == 1)
+ return 0;
+
+ if (rc == 0)
+ return 1;
+
+ return rc;
+}
+
+static void lfsck_orphan_it_put(const struct lu_env *env,
+ struct dt_it *di)
+{
+}
+
+static struct dt_key *lfsck_orphan_it_key(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+
+ return (struct dt_key *)&it->loi_key;
+}
+
+static int lfsck_orphan_it_key_size(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ return sizeof(struct lu_fid);
+}
+
+static int lfsck_orphan_it_rec(const struct lu_env *env,
+ const struct dt_it *di,
+ struct dt_rec *rec,
+ __u32 attr)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+
+ *(struct lu_orphan_rec *)rec = it->loi_rec;
+
+ return 0;
+}
+
+static __u64 lfsck_orphan_it_store(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+
+ return it->loi_hash;
+}
+
+/**
+ * \retval +1: locate to the exactly position
+ * \retval 0: cannot locate to the exactly position,
+ * call next() to move to a valid position.
+ * \retval -ve: on error
+ */
+static int lfsck_orphan_it_load(const struct lu_env *env,
+ const struct dt_it *di,
+ __u64 hash)
+{
+ struct lfsck_orphan_it *it = (struct lfsck_orphan_it *)di;
+ struct lfsck_layout_slave_target *llst = it->loi_llst;
+ int rc;
+
+ LASSERT(llst != NULL);
+
+ if (hash != llst->llst_hash) {
+ CWARN("%s: the given hash "LPU64" for orphan iteration does "
+ "not match the one when fini "LPU64", to be reset.\n",
+ lfsck_lfsck2name(it->loi_com->lc_lfsck), hash,
+ llst->llst_hash);
+ fid_zero(&llst->llst_fid);
+ llst->llst_hash = 0;
+ }
+
+ it->loi_key = llst->llst_fid;
+ it->loi_hash = llst->llst_hash;
+ rc = lfsck_orphan_it_next(env, (struct dt_it *)di);
+ if (rc == 1)
+ return 0;
+
+ if (rc == 0)
+ return 1;
+
+ return rc;
+}
+
+static int lfsck_orphan_it_key_rec(const struct lu_env *env,
+ const struct dt_it *di,
+ void *key_rec)
+{
+ return 0;
+}
+
+const struct dt_index_operations lfsck_orphan_index_ops = {
+ .dio_lookup = lfsck_orphan_index_lookup,
+ .dio_declare_insert = lfsck_orphan_index_declare_insert,
+ .dio_insert = lfsck_orphan_index_insert,
+ .dio_declare_delete = lfsck_orphan_index_declare_delete,
+ .dio_delete = lfsck_orphan_index_delete,
+ .dio_it = {
+ .init = lfsck_orphan_it_init,
+ .fini = lfsck_orphan_it_fini,
+ .get = lfsck_orphan_it_get,
+ .put = lfsck_orphan_it_put,
+ .next = lfsck_orphan_it_next,
+ .key = lfsck_orphan_it_key,
+ .key_size = lfsck_orphan_it_key_size,
+ .rec = lfsck_orphan_it_rec,
+ .store = lfsck_orphan_it_store,
+ .load = lfsck_orphan_it_load,
+ .key_rec = lfsck_orphan_it_key_rec,
+ }
+};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff