#define DEBUG_SUBSYSTEM S_LFSCK
#include <linux/bitops.h>
+#include <linux/rbtree.h>
#include <lustre/lustre_idl.h>
#include <lu_object.h>
#include <dt_object.h>
-#include <lustre_linkea.h>
#include <lustre_fid.h>
#include <lustre_lib.h>
#include <lustre_net.h>
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;
struct list_head llsd_master_list;
spinlock_t llsd_lock;
__u64 llsd_touch_gen;
+ struct dt_object *llsd_rb_obj;
+ struct rb_root llsd_rb_root;
+ rwlock_t llsd_rb_lock;
+ unsigned int llsd_rbtree_valid:1;
};
struct lfsck_layout_object {
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_get_lovea(const struct lu_env *env,
- struct dt_object *obj,
- struct lu_buf *buf, ssize_t *buflen)
+ struct dt_object *obj, struct lu_buf *buf)
{
int rc;
return rc;
lu_buf_realloc(buf, rc);
- if (buflen != NULL)
- *buflen = buf->lb_len;
-
if (buf->lb_buf == NULL)
return -ENOMEM;
if (unlikely(buf->lb_buf == NULL)) {
lu_buf_alloc(buf, rc);
- if (buflen != NULL)
- *buflen = buf->lb_len;
-
if (buf->lb_buf == NULL)
return -ENOMEM;
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_le_to_cpu(&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_le_to_cpu(&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_WIDTH - 1)
+
+struct lfsck_rbtree_node {
+ struct rb_node lrn_node;
+ __u64 lrn_seq;
+ __u32 lrn_first_oid;
+ atomic_t lrn_known_count;
+ atomic_t lrn_accessed_count;
+ void *lrn_known_bitmap;
+ void *lrn_accessed_bitmap;
+};
+
+static inline int lfsck_rbtree_cmp(struct lfsck_rbtree_node *lrn,
+ __u64 seq, __u32 oid)
+{
+ if (seq < lrn->lrn_seq)
+ return -1;
+
+ if (seq > lrn->lrn_seq)
+ return 1;
+
+ if (oid < lrn->lrn_first_oid)
+ return -1;
+
+ if (oid - lrn->lrn_first_oid >= LFSCK_RBTREE_BITMAP_WIDTH)
+ return 1;
+
+ return 0;
+}
+
+/* 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, bool *exact)
+{
+ 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)
+ node = node->rb_left;
+ else if (rc > 0)
+ node = node->rb_right;
+ else
+ return lrn;
+ }
+
+ 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,
+ const struct lu_fid *fid)
+{
+ struct lfsck_rbtree_node *lrn;
+
+ OBD_ALLOC_PTR(lrn);
+ if (lrn == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ OBD_ALLOC(lrn->lrn_known_bitmap, LFSCK_RBTREE_BITMAP_SIZE);
+ if (lrn->lrn_known_bitmap == NULL) {
+ OBD_FREE_PTR(lrn);
+
+ return ERR_PTR(-ENOMEM);
+ }
+
+ OBD_ALLOC(lrn->lrn_accessed_bitmap, LFSCK_RBTREE_BITMAP_SIZE);
+ if (lrn->lrn_accessed_bitmap == NULL) {
+ OBD_FREE(lrn->lrn_known_bitmap, LFSCK_RBTREE_BITMAP_SIZE);
+ OBD_FREE_PTR(lrn);
+
+ return ERR_PTR(-ENOMEM);
+ }
+
+ RB_CLEAR_NODE(&lrn->lrn_node);
+ lrn->lrn_seq = fid_seq(fid);
+ lrn->lrn_first_oid = fid_oid(fid) & ~LFSCK_RBTREE_BITMAP_MASK;
+ atomic_set(&lrn->lrn_known_count, 0);
+ atomic_set(&lrn->lrn_accessed_count, 0);
+
+ return lrn;
+}
+
+static void lfsck_rbtree_free(struct lfsck_rbtree_node *lrn)
+{
+ OBD_FREE(lrn->lrn_accessed_bitmap, LFSCK_RBTREE_BITMAP_SIZE);
+ OBD_FREE(lrn->lrn_known_bitmap, LFSCK_RBTREE_BITMAP_SIZE);
+ OBD_FREE_PTR(lrn);
+}
+
+/* The caller should hold lock. */
+static struct lfsck_rbtree_node *
+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 *parent = NULL;
+ struct lfsck_rbtree_node *tmp;
+ int rc;
+
+ while (*pos != NULL) {
+ parent = *pos;
+ 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;
+ else if (rc > 0)
+ pos = &(*pos)->rb_right;
+ else
+ return tmp;
+ }
+
+ rb_link_node(&lrn->lrn_node, parent, pos);
+ rb_insert_color(&lrn->lrn_node, &llsd->llsd_rb_root);
+
+ 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)
+{
+ struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct dt_device *dev = lfsck->li_bottom;
+ struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct dt_object *obj;
+
+ fid->f_seq = FID_SEQ_LAYOUT_RBTREE;
+ fid->f_oid = lfsck_dev_idx(dev);
+ fid->f_ver = 0;
+ obj = dt_locate(env, dev, fid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ /* 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. */
+ 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;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK init OST-objects accessing bitmap\n",
+ lfsck_lfsck2name(lfsck));
return 0;
}
+static void lfsck_rbtree_cleanup(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct rb_node *node = rb_first(&llsd->llsd_rb_root);
+ struct rb_node *next;
+ struct lfsck_rbtree_node *lrn;
+
+ lfsck->li_bottom->dd_record_fid_accessed = 0;
+ /* Invalid the rbtree, then no others will use it. */
+ write_lock(&llsd->llsd_rb_lock);
+ llsd->llsd_rbtree_valid = 0;
+ write_unlock(&llsd->llsd_rb_lock);
+
+ while (node != NULL) {
+ next = rb_next(node);
+ lrn = rb_entry(node, struct lfsck_rbtree_node, lrn_node);
+ rb_erase(node, &llsd->llsd_rb_root);
+ lfsck_rbtree_free(lrn);
+ node = next;
+ }
+
+ if (llsd->llsd_rb_obj != NULL) {
+ lu_object_put(env, &llsd->llsd_rb_obj->do_lu);
+ llsd->llsd_rb_obj = NULL;
+ }
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fini OST-objects accessing bitmap\n",
+ lfsck_lfsck2name(lfsck));
+}
+
+static void lfsck_rbtree_update_bitmap(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct lu_fid *fid,
+ bool accessed)
+{
+ struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct lfsck_rbtree_node *lrn;
+ bool insert = false;
+ int idx;
+ int rc = 0;
+ ENTRY;
+
+ if (unlikely(!fid_is_sane(fid) || fid_is_last_id(fid)))
+ RETURN_EXIT;
+
+ if (!fid_is_idif(fid) && !fid_is_norm(fid))
+ RETURN_EXIT;
+
+ read_lock(&llsd->llsd_rb_lock);
+ if (!llsd->llsd_rbtree_valid)
+ GOTO(unlock, rc = 0);
+
+ lrn = lfsck_rbtree_search(llsd, fid, NULL);
+ if (lrn == NULL) {
+ struct lfsck_rbtree_node *tmp;
+
+ LASSERT(!insert);
+
+ read_unlock(&llsd->llsd_rb_lock);
+ tmp = lfsck_rbtree_new(env, fid);
+ if (IS_ERR(tmp))
+ GOTO(out, rc = PTR_ERR(tmp));
+
+ insert = true;
+ write_lock(&llsd->llsd_rb_lock);
+ if (!llsd->llsd_rbtree_valid) {
+ lfsck_rbtree_free(tmp);
+ GOTO(unlock, rc = 0);
+ }
+
+ lrn = lfsck_rbtree_insert(llsd, tmp);
+ if (lrn != tmp)
+ lfsck_rbtree_free(tmp);
+ }
+
+ idx = fid_oid(fid) & LFSCK_RBTREE_BITMAP_MASK;
+ /* 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 && !test_and_set_bit(idx, lrn->lrn_accessed_bitmap))
+ atomic_inc(&lrn->lrn_accessed_count);
+
+ GOTO(unlock, rc = 0);
+
+unlock:
+ if (insert)
+ write_unlock(&llsd->llsd_rb_lock);
+ else
+ read_unlock(&llsd->llsd_rb_lock);
+out:
+ if (rc != 0 && accessed) {
+ struct lfsck_layout *lo = com->lc_file_ram;
+
+ CDEBUG(D_LFSCK, "%s: fail to update OST-objects accessing "
+ "bitmap, and will cause incorrect LFSCK OST-object "
+ "handling, so disable it to cancel orphan handling "
+ "for related device. rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), rc);
+
+ lo->ll_flags |= LF_INCOMPLETE;
+ lfsck_rbtree_cleanup(env, com);
+ }
+}
+
static void lfsck_layout_le_to_cpu(struct lfsck_layout *des,
const struct lfsck_layout *src)
{
if (rc == 0) {
return -ENOENT;
} else if (rc < 0) {
- CWARN("%s: failed to load lfsck_layout: rc = %d\n",
- lfsck_lfsck2name(com->lc_lfsck), rc);
+ CDEBUG(D_LFSCK, "%s: failed to load lfsck_layout: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), rc);
return rc;
} else if (rc != size) {
- CWARN("%s: crashed lfsck_layout, to be reset: rc = %d\n",
- lfsck_lfsck2name(com->lc_lfsck), rc);
+ CDEBUG(D_LFSCK, "%s: lfsck_layout size %u != %u; reset it\n",
+ lfsck_lfsck2name(com->lc_lfsck), rc, (unsigned int)size);
return 1;
}
lfsck_layout_le_to_cpu(lo, com->lc_file_disk);
if (lo->ll_magic != LFSCK_LAYOUT_MAGIC) {
- CWARN("%s: invalid lfsck_layout magic %#x != %#x, "
- "to be reset\n", lfsck_lfsck2name(com->lc_lfsck),
- lo->ll_magic, LFSCK_LAYOUT_MAGIC);
+ CDEBUG(D_LFSCK, "%s: invalid lfsck_layout magic %#x != %#x, "
+ "to be reset\n", lfsck_lfsck2name(com->lc_lfsck),
+ lo->ll_magic, LFSCK_LAYOUT_MAGIC);
return 1;
}
lfsck_layout_cpu_to_le(lo, com->lc_file_ram);
handle = dt_trans_create(env, lfsck->li_bottom);
- if (IS_ERR(handle)) {
- rc = PTR_ERR(handle);
- CERROR("%s: fail to create trans for storing lfsck_layout: "
- "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
- RETURN(rc);
- }
+ if (IS_ERR(handle))
+ GOTO(log, rc = PTR_ERR(handle));
- rc = dt_declare_record_write(env, obj, size, pos, handle);
- if (rc != 0) {
- CERROR("%s: fail to declare trans for storing lfsck_layout(1): "
- "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
+ rc = dt_declare_record_write(env, obj, lfsck_buf_get(env, lo, size),
+ pos, handle);
+ if (rc != 0)
GOTO(out, rc);
- }
rc = dt_trans_start_local(env, lfsck->li_bottom, handle);
- if (rc != 0) {
- CERROR("%s: fail to start trans for storing lfsck_layout: "
- "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
+ if (rc != 0)
GOTO(out, rc);
- }
rc = dt_record_write(env, obj, lfsck_buf_get(env, lo, size), &pos,
handle);
- if (rc != 0)
- CERROR("%s: fail to store lfsck_layout(1): size = %d, "
- "rc = %d\n", lfsck_lfsck2name(lfsck), (int)size, rc);
GOTO(out, rc);
out:
dt_trans_stop(env, lfsck->li_bottom, handle);
+log:
+ if (rc != 0)
+ CDEBUG(D_LFSCK, "%s: fail to store lfsck_layout: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
return rc;
}
int rc;
ENTRY;
- CDEBUG(D_LFSCK, "To create LAST_ID for <seq> "LPX64"\n",
- fid_seq(lfsck_dto2fid(obj)));
-
if (bk->lb_param & LPF_DRYRUN)
return 0;
th = dt_trans_create(env, dt);
if (IS_ERR(th))
- RETURN(rc = PTR_ERR(th));
+ GOTO(log, rc = PTR_ERR(th));
rc = dt_declare_create(env, obj, la, NULL, dof, th);
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);
GOTO(stop, rc);
dt_write_lock(env, obj, 0);
- if (likely(!dt_object_exists(obj))) {
+ if (likely(dt_object_exists(obj) == 0)) {
rc = dt_create(env, obj, la, NULL, dof, th);
if (rc == 0)
rc = dt_record_write(env, obj,
stop:
dt_trans_stop(env, dt, th);
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK will create LAST_ID for <seq> "
+ LPX64": rc = %d\n",
+ lfsck_lfsck2name(lfsck), fid_seq(lfsck_dto2fid(obj)), rc);
+
return rc;
}
lfsck->li_out_notify(env, lfsck->li_out_notify_data,
LE_LASTID_REBUILDING);
lo->ll_flags |= LF_CRASHED_LASTID;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK finds crashed "
+ "LAST_ID file (1) for the sequence "LPX64
+ ", old value "LPU64", known value "LPU64"\n",
+ lfsck_lfsck2name(lfsck), lls->lls_seq,
+ lastid, lls->lls_lastid);
}
} else if (lastid >= lls->lls_lastid) {
lls->lls_lastid = lastid;
list_for_each_entry(lls, &llsd->llsd_seq_list, lls_list) {
loff_t pos = 0;
- /* XXX: Add the code back if we really found related
- * inconsistent cases in the future. */
-#if 0
- if (!lls->lls_dirty) {
- /* In OFD, before the pre-creation, the LAST_ID
- * file will be updated firstly, which may hide
- * some potential crashed cases. For example:
- *
- * The old obj1's ID is higher than old LAST_ID
- * but lower than the new LAST_ID, but the LFSCK
- * have not touch the obj1 until the OFD updated
- * the LAST_ID. So the LFSCK does not regard it
- * as crashed case. But when OFD does not create
- * successfully, it will set the LAST_ID as the
- * real created objects' ID, then LFSCK needs to
- * found related inconsistency. */
- rc = lfsck_layout_lastid_reload(env, com, lls);
- if (likely(!lls->lls_dirty))
- continue;
- }
-#endif
+ if (!lls->lls_dirty)
+ continue;
- CDEBUG(D_LFSCK, "To sync the LAST_ID for <seq> "LPX64
- " as <oid> "LPU64"\n", lls->lls_seq, lls->lls_lastid);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK will sync the LAST_ID for "
+ "<seq> "LPX64" as <oid> "LPU64"\n",
+ lfsck_lfsck2name(lfsck), lls->lls_seq, lls->lls_lastid);
if (bk->lb_param & LPF_DRYRUN) {
lls->lls_dirty = 0;
th = dt_trans_create(env, dt);
if (IS_ERR(th)) {
rc1 = PTR_ERR(th);
- CERROR("%s: (1) failed to store "LPX64": rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK failed to store "
+ "the LAST_ID for <seq> "LPX64"(1): rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck),
lls->lls_seq, rc1);
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,
dt_trans_stop(env, dt, th);
if (rc != 0) {
rc1 = rc;
- CERROR("%s: (2) failed to store "LPX64": rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK failed to store "
+ "the LAST_ID for <seq> "LPX64"(2): rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck),
lls->lls_seq, rc1);
}
RETURN(PTR_ERR(obj));
/* LAST_ID crashed, to be rebuilt */
- if (!dt_object_exists(obj)) {
+ if (dt_object_exists(obj) == 0) {
if (!(lo->ll_flags & LF_CRASHED_LASTID)) {
LASSERT(lfsck->li_out_notify != NULL);
LE_LASTID_REBUILDING);
lo->ll_flags |= LF_CRASHED_LASTID;
+ CDEBUG(D_LFSCK, "%s: layout LFSCK cannot find the "
+ "LAST_ID file for sequence "LPX64"\n",
+ lfsck_lfsck2name(lfsck), lls->lls_seq);
+
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY4) &&
cfs_fail_val > 0) {
struct l_wait_info lwi = LWI_TIMEOUT(
lfsck->li_out_notify(env, lfsck->li_out_notify_data,
LE_LASTID_REBUILDING);
lo->ll_flags |= LF_CRASHED_LASTID;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK finds invalid "
+ "LAST_ID file for the sequence "LPX64
+ ": rc = %d\n",
+ lfsck_lfsck2name(lfsck), lls->lls_seq, rc);
}
lls->lls_lastid = le64_to_cpu(lls->lls_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);
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK hit first non-repaired "
+ "inconsistency at the pos ["LPU64"]\n",
+ lfsck_lfsck2name(lfsck),
+ lo->ll_pos_first_inconsistent);
+ }
+}
+
static int lfsck_layout_master_async_interpret(const struct lu_env *env,
struct ptlrpc_request *req,
void *args, int rc)
if (rc != 0) {
struct lfsck_layout *lo = com->lc_file_ram;
+ CDEBUG(D_LFSCK, "%s: fail to notify %s %x for layout "
+ "start: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck),
+ (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ ltd->ltd_index, rc);
lo->ll_flags |= LF_INCOMPLETE;
- lfsck_tgt_put(ltd);
break;
}
spin_lock(<ds->ltd_lock);
if (ltd->ltd_dead || ltd->ltd_layout_done) {
spin_unlock(<ds->ltd_lock);
- lfsck_tgt_put(ltd);
break;
}
&llmd->llmd_mdt_phase1_list);
}
spin_unlock(<ds->ltd_lock);
- lfsck_tgt_put(ltd);
break;
case LE_STOP:
case LE_PHASE1_DONE:
case LE_PHASE2_DONE:
- if (rc != 0)
- CERROR("%s: fail to notify %s %x for layout: "
+ case LE_PEER_EXIT:
+ if (rc != 0 && rc != -EALREADY)
+ CDEBUG(D_LFSCK, "%s: fail to notify %s %x for layout: "
"event = %d, rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck),
(lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
list_del_init(<d->ltd_layout_phase_list);
list_del_init(<d->ltd_layout_list);
spin_unlock(<ds->ltd_lock);
- lfsck_tgt_put(ltd);
break;
}
&RMF_LFSCK_REPLY);
if (reply == NULL) {
rc = -EPROTO;
- CERROR("%s: invalid return value: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: invalid query reply: rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck), rc);
spin_lock(<ds->ltd_lock);
list_del_init(<d->ltd_layout_phase_list);
list_del_init(<d->ltd_layout_list);
spin_unlock(<ds->ltd_lock);
- lfsck_tgt_put(ltd);
break;
}
spin_unlock(<ds->ltd_lock);
break;
}
- lfsck_tgt_put(ltd);
break;
}
default:
- CERROR("%s: unexpected event: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK unexpected event: rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck), lr->lr_event);
break;
}
- lfsck_component_put(env, com);
+ if (!laia->laia_shared) {
+ lfsck_tgt_put(ltd);
+ lfsck_component_put(env, com);
+ }
return 0;
}
struct lfsck_tgt_descs *ltds;
struct lfsck_tgt_desc *ltd;
struct list_head *head;
- __u32 cnt = 0;
int rc = 0;
int rc1 = 0;
ENTRY;
memset(lr, 0, sizeof(*lr));
lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
lr->lr_event = LE_QUERY;
- lr->lr_active = LT_LAYOUT;
+ lr->lr_active = LFSCK_TYPE_LAYOUT;
laia->laia_com = com;
laia->laia_lr = lr;
+ laia->laia_shared = 0;
if (!list_empty(&llmd->llmd_mdt_phase1_list)) {
ltds = &lfsck->li_mdt_descs;
break;
ltd->ltd_layout_gen = llmd->llmd_touch_gen;
- list_del(<d->ltd_layout_phase_list);
- list_add_tail(<d->ltd_layout_phase_list, head);
+ list_move_tail(<d->ltd_layout_phase_list, head);
atomic_inc(<d->ltd_ref);
laia->laia_ltd = ltd;
spin_unlock(<ds->ltd_lock);
lfsck_layout_master_async_interpret,
laia, LFSCK_QUERY);
if (rc != 0) {
- CERROR("%s: fail to query %s %x for layout: rc = %d\n",
- lfsck_lfsck2name(lfsck),
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fail to query %s %x: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck),
(lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
ltd->ltd_index, rc);
lfsck_tgt_put(ltd);
rc1 = rc;
- } else {
- cnt++;
}
spin_lock(<ds->ltd_lock);
}
spin_unlock(<ds->ltd_lock);
- if (cnt > 0) {
- rc = ptlrpc_set_wait(set);
- if (rc < 0) {
- ptlrpc_set_destroy(set);
- RETURN(rc);
- }
- cnt = 0;
+ rc = ptlrpc_set_wait(set);
+ if (rc < 0) {
+ ptlrpc_set_destroy(set);
+ RETURN(rc);
}
if (!(lr->lr_flags & LEF_TO_OST) &&
static int lfsck_layout_master_notify_others(const struct lu_env *env,
struct lfsck_component *com,
- struct lfsck_request *lr,
- __u32 flags)
+ struct lfsck_request *lr)
{
struct lfsck_thread_info *info = lfsck_env_info(env);
struct lfsck_async_interpret_args *laia = &info->lti_laia;
struct lfsck_instance *lfsck = com->lc_lfsck;
struct lfsck_layout_master_data *llmd = com->lc_data;
struct lfsck_layout *lo = com->lc_file_ram;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
struct ptlrpc_request_set *set;
struct lfsck_tgt_descs *ltds;
struct lfsck_tgt_desc *ltd;
struct lfsck_tgt_desc *next;
struct list_head *head;
__u32 idx;
- __u32 cnt = 0;
int rc = 0;
ENTRY;
if (set == NULL)
RETURN(-ENOMEM);
- lr->lr_active = LT_LAYOUT;
+ lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
+ lr->lr_active = LFSCK_TYPE_LAYOUT;
laia->laia_com = com;
laia->laia_lr = lr;
- lr->lr_flags = 0;
+ laia->laia_shared = 0;
switch (lr->lr_event) {
case LE_START:
- /* Notify OSTs firstly, then other MDTs if needed. */
- lr->lr_flags |= LEF_TO_OST;
+ /* Notify OSTs firstly, then handle other MDTs if needed. */
ltds = &lfsck->li_ost_descs;
-
-lable1:
laia->laia_ltds = ltds;
down_read(<ds->ltd_rw_sem);
cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
lfsck_layout_master_async_interpret,
laia, LFSCK_NOTIFY);
if (rc != 0) {
- CERROR("%s: fail to notify %s %x for layout "
- "start: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fail to "
+ "notify %s %x for start: rc = %d\n",
lfsck_lfsck2name(lfsck),
(lr->lr_flags & LEF_TO_OST) ? "OST" :
"MDT", idx, rc);
lfsck_tgt_put(ltd);
lo->ll_flags |= LF_INCOMPLETE;
- } else {
- cnt++;
}
}
up_read(<ds->ltd_rw_sem);
/* Sync up */
- if (cnt > 0) {
- rc = ptlrpc_set_wait(set);
- if (rc < 0) {
- ptlrpc_set_destroy(set);
- RETURN(rc);
- }
- cnt = 0;
+ rc = ptlrpc_set_wait(set);
+ if (rc < 0) {
+ ptlrpc_set_destroy(set);
+ RETURN(rc);
}
- if (!(flags & LPF_ALL_MDT))
+ if (!(bk->lb_param & LPF_ALL_TGT))
break;
+ /* link other MDT targets locallly. */
ltds = &lfsck->li_mdt_descs;
- /* The sponsor broadcasts the request to other MDTs. */
- if (flags & LPF_BROADCAST) {
- flags &= ~LPF_ALL_MDT;
- lr->lr_flags &= ~LEF_TO_OST;
- goto lable1;
- }
-
- /* non-sponsors link other MDT targets locallly. */
spin_lock(<ds->ltd_lock);
cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
ltd = LTD_TGT(ltds, idx);
&llmd->llmd_mdt_phase1_list);
}
spin_unlock(<ds->ltd_lock);
-
break;
case LE_STOP:
- if (flags & LPF_BROADCAST)
- lr->lr_flags |= LEF_FORCE_STOP;
case LE_PHASE2_DONE:
- /* Notify other MDTs if needed, then the OSTs. */
- if (flags & LPF_ALL_MDT) {
- /* The sponsor broadcasts the request to other MDTs. */
- if (flags & LPF_BROADCAST) {
- lr->lr_flags &= ~LEF_TO_OST;
- head = &llmd->llmd_mdt_list;
- ltds = &lfsck->li_mdt_descs;
- goto lable3;
- }
-
- /* non-sponsors unlink other MDT targets locallly. */
+ case LE_PEER_EXIT: {
+ /* Handle other MDTs firstly if needed, then notify the OSTs. */
+ if (bk->lb_param & LPF_ALL_TGT) {
+ head = &llmd->llmd_mdt_list;
ltds = &lfsck->li_mdt_descs;
- spin_lock(<ds->ltd_lock);
- list_for_each_entry_safe(ltd, next,
- &llmd->llmd_mdt_list,
- ltd_layout_list) {
- list_del_init(<d->ltd_layout_phase_list);
- list_del_init(<d->ltd_layout_list);
+ if (lr->lr_event == LE_STOP) {
+ /* unlink other MDT targets locallly. */
+ spin_lock(<ds->ltd_lock);
+ list_for_each_entry_safe(ltd, next, head,
+ ltd_layout_list) {
+ list_del_init(<d->ltd_layout_phase_list);
+ list_del_init(<d->ltd_layout_list);
+ }
+ spin_unlock(<ds->ltd_lock);
+
+ lr->lr_flags |= LEF_TO_OST;
+ head = &llmd->llmd_ost_list;
+ ltds = &lfsck->li_ost_descs;
+ } else {
+ lr->lr_flags &= ~LEF_TO_OST;
}
- spin_unlock(<ds->ltd_lock);
+ } else {
+ lr->lr_flags |= LEF_TO_OST;
+ head = &llmd->llmd_ost_list;
+ ltds = &lfsck->li_ost_descs;
}
-lable2:
- lr->lr_flags |= LEF_TO_OST;
- head = &llmd->llmd_ost_list;
- ltds = &lfsck->li_ost_descs;
-
-lable3:
+again:
laia->laia_ltds = ltds;
spin_lock(<ds->ltd_lock);
while (!list_empty(head)) {
if (!list_empty(<d->ltd_layout_phase_list))
list_del_init(<d->ltd_layout_phase_list);
list_del_init(<d->ltd_layout_list);
+ atomic_inc(<d->ltd_ref);
laia->laia_ltd = ltd;
spin_unlock(<ds->ltd_lock);
rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
lfsck_layout_master_async_interpret,
laia, LFSCK_NOTIFY);
- if (rc != 0)
- CERROR("%s: fail to notify %s %x for layout "
- "stop/phase2: rc = %d\n",
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fail to "
+ "notify %s %x for stop/phase2_done/"
+ "peer_exit: rc = %d\n",
lfsck_lfsck2name(lfsck),
(lr->lr_flags & LEF_TO_OST) ? "OST" :
"MDT", ltd->ltd_index, rc);
- else
- cnt++;
+ lfsck_tgt_put(ltd);
+ }
spin_lock(<ds->ltd_lock);
}
spin_unlock(<ds->ltd_lock);
- if (!(flags & LPF_BROADCAST))
- break;
-
- /* Sync up */
- if (cnt > 0) {
- rc = ptlrpc_set_wait(set);
- if (rc < 0) {
- ptlrpc_set_destroy(set);
- RETURN(rc);
- }
- cnt = 0;
+ rc = ptlrpc_set_wait(set);
+ if (rc < 0) {
+ ptlrpc_set_destroy(set);
+ RETURN(rc);
}
- flags &= ~LPF_BROADCAST;
- goto lable2;
+ if (!(lr->lr_flags & LEF_TO_OST)) {
+ lr->lr_flags |= LEF_TO_OST;
+ head = &llmd->llmd_ost_list;
+ ltds = &lfsck->li_ost_descs;
+ goto again;
+ }
+ break;
+ }
case LE_PHASE1_DONE:
llmd->llmd_touch_gen++;
- lr->lr_flags &= ~LEF_TO_OST;
ltds = &lfsck->li_mdt_descs;
laia->laia_ltds = ltds;
spin_lock(<ds->ltd_lock);
break;
ltd->ltd_layout_gen = llmd->llmd_touch_gen;
- list_del_init(<d->ltd_layout_phase_list);
- list_add_tail(<d->ltd_layout_phase_list,
- &llmd->llmd_mdt_phase1_list);
+ list_move_tail(<d->ltd_layout_phase_list,
+ &llmd->llmd_mdt_phase1_list);
+ atomic_inc(<d->ltd_ref);
laia->laia_ltd = ltd;
spin_unlock(<ds->ltd_lock);
rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
lfsck_layout_master_async_interpret,
laia, LFSCK_NOTIFY);
- if (rc != 0)
- CERROR("%s: fail to notify MDT %x for layout "
- "phase1 done: rc = %d\n",
- lfsck_lfsck2name(lfsck),
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fail to "
+ "notify MDT %x for phase1_done: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck),
ltd->ltd_index, rc);
- else
- cnt++;
+ lfsck_tgt_put(ltd);
+ }
spin_lock(<ds->ltd_lock);
}
spin_unlock(<ds->ltd_lock);
break;
default:
- CERROR("%s: unexpected LFSCK event: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK unexpected event: rc = %d\n",
lfsck_lfsck2name(lfsck), lr->lr_event);
rc = -EINVAL;
break;
}
- if (cnt > 0)
- rc = ptlrpc_set_wait(set);
+ rc = ptlrpc_set_wait(set);
ptlrpc_set_destroy(set);
- if (rc == 0 && lr->lr_event == LE_START &&
- list_empty(&llmd->llmd_ost_list))
- rc = -ENODEV;
-
RETURN(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;
}
}
-static int lfsck_layout_scan_orphan(const struct lu_env *env,
- struct lfsck_component *com,
- struct lfsck_tgt_desc *ltd)
+static int lfsck_layout_trans_stop(const struct lu_env *env,
+ struct dt_device *dev,
+ struct thandle *handle, int result)
{
- /* XXX: To be extended in other patch. */
+ int rc;
- return 0;
+ handle->th_result = result;
+ rc = dt_trans_stop(env, dev, handle);
+ if (rc > 0)
+ rc = 0;
+ else if (rc == 0)
+ rc = 1;
+
+ return rc;
}
-static int lfsck_layout_assistant(void *args)
+/**
+ * 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)
+{
+ struct lov_user_md *lum = &lfsck_env_info(env)->lti_lum;
+ struct dt_object *root;
+ int rc;
+
+ 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;
+}
+
+/**
+ * \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 ost_id *oi = &lfsck_env_info(env)->lti_oi;
+ struct lov_mds_md_v1 *lmm = buf->lb_buf;
+ struct lu_buf ea_buf;
+ int rc;
+ __u32 magic;
+ __u16 count;
+
+ magic = le32_to_cpu(lmm->lmm_magic);
+ count = le16_to_cpu(lmm->lmm_stripe_count);
+
+ 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);
+
+ if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_HOLE) {
+ struct lov_ost_data_v1 *objs;
+ int i;
+
+ if (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;
+ }
+
+ /* 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);
+ }
+
+ lfsck_buf_init(&ea_buf, lmm, lov_mds_md_size(count, magic));
+ rc = dt_xattr_set(env, parent, &ea_buf, XATTR_NAME_LOV, fl, handle,
+ BYPASS_CAPA);
+ if (rc == 0)
+ rc = 1;
+
+ return 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;
+ bool hole = false;
+ ENTRY;
+
+ if (fl == LU_XATTR_CREATE || reset) {
+ __u32 pattern = LOV_PATTERN_RAID0;
+
+ count = ea_off + 1;
+ LASSERT(buf->lb_len >= lov_mds_md_size(count, LOV_MAGIC_V1));
+
+ if (ea_off != 0 || reset) {
+ pattern |= LOV_PATTERN_F_HOLE;
+ hole = true;
+ }
+
+ 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);
+
+ rc = lfsck_layout_get_def_stripesize(env, lfsck,
+ &lmm->lmm_stripe_size);
+ if (rc != 0)
+ RETURN(rc);
+
+ objs = &lmm->lmm_objects[ea_off];
+ } else {
+ __u32 magic = le32_to_cpu(lmm->lmm_magic);
+ int gap;
+
+ 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];
+
+ 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);
+ hole = true;
+ }
+
+ 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);
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant extend layout EA for "
+ DFID": parent "DFID", OST-index %u, stripe-index %u, fl %d, "
+ "reset %s, %s LOV EA hole: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(cfid), PFID(lfsck_dto2fid(parent)),
+ ost_idx, ea_off, fl, reset ? "yes" : "no",
+ hole ? "with" : "without", rc);
+
+ RETURN(rc);
+}
+
+/**
+ * \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 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;
+
+ child = lfsck_object_find_by_dev(env, cdev, cfid);
+ if (IS_ERR(child))
+ RETURN(PTR_ERR(child));
+
+ handle = dt_trans_create(env, cdev);
+ if (IS_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);
+ /* 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);
+
+ rc = dt_trans_start(env, cdev, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_xattr_set(env, child, buf, XATTR_NAME_FID, 0, handle,
+ BYPASS_CAPA);
+
+ GOTO(stop, rc = (rc == 0 ? 1 : rc));
+
+stop:
+ dt_trans_stop(env, cdev, handle);
+
+out:
+ lu_object_put(env, &child->do_lu);
+
+ return rc;
+}
+
+/**
+ * This function will create the MDT-object with the given (partial) LOV EA.
+ *
+ * Under some data corruption cases, the MDT-object of the file may be lost,
+ * but its OST-objects, or some of them are there. The layout LFSCK needs to
+ * re-create the MDT-object with the orphan OST-object(s) information.
+ *
+ * On the other hand, the LFSCK may has created some OST-object for repairing
+ * dangling LOV EA reference, but as the LFSCK processing, it may find that
+ * the old OST-object is there and should replace the former new created OST
+ * object. Unfortunately, some others have modified such newly created object.
+ * To keep the data (both new and old), the LFSCK will create MDT-object with
+ * new FID to reference the original OST-object.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] com pointer to the lfsck component
+ * \param[in] ltd pointer to target device descriptor
+ * \param[in] rec pointer to the record for the orphan OST-object
+ * \param[in] cfid pointer to FID for the orphan OST-object
+ * \param[in] infix additional information, such as the FID for original
+ * MDT-object and the stripe offset in the LOV EA
+ * \param[in] type the type for describing why the orphan MDT-object is
+ * created. The rules are as following:
+ *
+ * type "C": Multiple OST-objects claim the same MDT-object and the
+ * same slot in the layout EA. Then the LFSCK will create
+ * new MDT-object(s) to hold the conflict OST-object(s).
+ *
+ * type "N": The orphan OST-object does not know which one was the
+ * real parent MDT-object, so the LFSCK uses new FID for
+ * its parent MDT-object.
+ *
+ * type "R": The orphan OST-object knows its parent MDT-object FID,
+ * but does not know the position (the file name) in the
+ * namespace.
+ *
+ * The orphan name will be like:
+ * ${FID}-${infix}-${type}-${conflict_version}
+ *
+ * \param[in] ea_off the stripe offset in the LOV EA
+ *
+ * \retval positive on repaired something
+ * \retval 0 if needs to repair nothing
+ * \retval negative error number on failure
+ */
+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 *infix,
+ const char *type,
+ __u32 ea_off)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct dt_insert_rec *dtrec = &info->lti_dt_rec;
+ char *name = info->lti_key;
+ struct lu_attr *la = &info->lti_la;
+ struct dt_object_format *dof = &info->lti_dof;
+ 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 = { 0 };
+ struct lu_buf *ea_buf = &info->lti_big_buf;
+ struct lu_buf lov_buf;
+ struct lustre_handle lh = { 0 };
+ struct linkea_data ldata = { 0 };
+ struct lu_buf linkea_buf;
+ const struct lu_name *pname;
+ int size = 0;
+ int idx = 0;
+ int rc = 0;
+ ENTRY;
+
+ /* Create .lustre/lost+found/MDTxxxx when needed. */
+ if (unlikely(lfsck->li_lpf_obj == NULL)) {
+ rc = lfsck_create_lpf(env, lfsck);
+ if (rc != 0)
+ GOTO(log, rc);
+ }
+
+ if (fid_is_zero(pfid)) {
+ struct filter_fid *ff = &info->lti_new_pfid;
+
+ rc = lfsck_fid_alloc(env, lfsck, pfid, false);
+ if (rc != 0)
+ RETURN(rc);
+
+ 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);
+ lfsck_buf_init(&pbuf, ff, sizeof(struct filter_fid));
+ cobj = lfsck_object_find_by_dev(env, ltd->ltd_tgt, cfid);
+ if (IS_ERR(cobj))
+ GOTO(log, rc = PTR_ERR(cobj));
+ }
+
+ pobj = lfsck_object_find_by_dev(env, lfsck->li_bottom, pfid);
+ if (IS_ERR(pobj))
+ GOTO(put, rc = PTR_ERR(pobj));
+
+ LASSERT(infix != NULL);
+ LASSERT(type != NULL);
+
+ do {
+ snprintf(name, NAME_MAX, DFID"%s-%s-%d", PFID(pfid), infix,
+ type, idx++);
+ 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);
+ } while (rc == 0);
+
+ rc = linkea_data_new(&ldata,
+ &lfsck_env_info(env)->lti_linkea_buf);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ pname = lfsck_name_get_const(env, name, strlen(name));
+ rc = linkea_add_buf(&ldata, pname, lfsck_dto2fid(lfsck->li_lpf_obj));
+ if (rc != 0)
+ GOTO(put, rc);
+
+ 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);
+
+ size = lov_mds_md_size(ea_off + 1, LOV_MAGIC_V1);
+ if (ea_buf->lb_len < size) {
+ lu_buf_realloc(ea_buf, size);
+ if (ea_buf->lb_buf == NULL)
+ GOTO(put, rc = -ENOMEM);
+ }
+
+ /* 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. */
+ lfsck_buf_init(&lov_buf, ea_buf->lb_buf, size);
+ rc = dt_declare_xattr_set(env, pobj, &lov_buf, XATTR_NAME_LOV,
+ LU_XATTR_CREATE, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 4a. Insert the MDT-object to .lustre/lost+found/MDTxxxx/ */
+ dtrec->rec_fid = pfid;
+ dtrec->rec_type = S_IFREG;
+ rc = dt_declare_insert(env, lfsck->li_lpf_obj,
+ (const struct dt_rec *)dtrec,
+ (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 5a. insert linkEA for parent. */
+ lfsck_buf_init(&linkea_buf, ldata.ld_buf->lb_buf,
+ ldata.ld_leh->leh_len);
+ rc = dt_declare_xattr_set(env, pobj, &linkea_buf,
+ XATTR_NAME_LINK, 0, 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,
+ &lov_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 *)dtrec,
+ (const struct dt_key *)name, th, BYPASS_CAPA, 1);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 5b. insert linkEA for parent. */
+ rc = dt_xattr_set(env, pobj, &linkea_buf,
+ XATTR_NAME_LINK, 0, th, BYPASS_CAPA);
+
+ 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);
+
+log:
+ if (rc < 0)
+ CDEBUG(D_LFSCK, "%s layout LFSCK assistant failed to "
+ "recreate the lost MDT-object: parent "DFID
+ ", child "DFID", OST-index %u, stripe-index %u, "
+ "infix %s, type %s: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(pfid), PFID(cfid),
+ ltd->ltd_index, ea_off, infix, type, rc);
+
+ 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 = LFSCK_TYPE_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 ||
+ lfsck_is_dead_obj(obj)) {
+ 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, "%s: layout LFSCK destroyed the empty "
+ "OST-object "DFID" that was created for reparing "
+ "dangling referenced case. But the original missed "
+ "OST-object is found now.\n",
+ lfsck_lfsck2name(lfsck), 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)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_fid *cfid2 = &info->lti_fid2;
+ struct ost_id *oi = &info->lti_oi;
+ char *infix = 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);
+ rc = ostid_to_fid(cfid2, oi, ost_idx2);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ /* 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);
+
+ fid_zero(&rec->lor_fid);
+ snprintf(infix, LFSCK_TMPBUF_LEN, "-"DFID"-%x",
+ PFID(lu_object_fid(&parent->do_lu)), ea_off);
+ rc = lfsck_layout_recreate_parent(env, com, ltd, rec, cfid,
+ infix, "C", 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:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant replaced the conflict "
+ "OST-object "DFID" on the OST %x with the orphan "DFID" on "
+ "the OST %x: parent "DFID", stripe-index %u: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), PFID(cfid2), ost_idx2,
+ PFID(cfid), ltd->ltd_index, PFID(lfsck_dto2fid(parent)),
+ ea_off, rc);
+
+ 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 lovea_size;
+ 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;
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant failed to recreate "
+ "LOV EA for "DFID": parent "DFID", OST-index %u, "
+ "stripe-index %u: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(cfid),
+ PFID(lfsck_dto2fid(parent)), ost_idx, ea_off, rc);
+
+ 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);
+
+ lovea_size = rc;
+ if (buf->lb_len < lovea_size) {
+ lu_buf_realloc(buf, lovea_size);
+ 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) {
+ lovea_size = lov_mds_md_size(ea_off + 1, LOV_MAGIC_V1);
+ /* If the declared is not big enough, re-try. */
+ if (buf->lb_len < lovea_size) {
+ rc = lovea_size;
+ 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;
+ lovea_size = rc;
+ }
+
+ if (fl == LU_XATTR_CREATE) {
+ if (bk->lb_param & LPF_DRYRUN)
+ GOTO(unlock_parent, rc = 1);
+
+ LASSERT(buf->lb_len >= lovea_size);
+
+ 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 >= lovea_size);
+
+ 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);
+
+ lovea_size = lov_mds_md_size(ea_off + 1, magic);
+ /* If the declared is not big enough, re-try. */
+ if (buf->lb_len < lovea_size) {
+ rc = lovea_size;
+ goto again;
+ }
+
+ 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);
+
+ 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);
+
+ CDEBUG(D_LFSCK, "%s layout LFSCK assistant fill "
+ "dummy layout slot for "DFID": parent "DFID
+ ", OST-index %u, stripe-index %u: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(cfid),
+ PFID(lfsck_dto2fid(parent)), ost_idx, i, rc);
+
+ GOTO(unlock_parent, rc);
+ }
+
+ ostid_le_to_cpu(&objs->l_ost_oi, oi);
+ rc = ostid_to_fid(fid, oi, le32_to_cpu(objs->l_ost_idx));
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: the parent "DFID" contains "
+ "invalid layout EA at the slot %d, index %u\n",
+ lfsck_lfsck2name(lfsck),
+ PFID(lfsck_dto2fid(parent)), i,
+ le32_to_cpu(objs->l_ost_idx));
+
+ GOTO(unlock_parent, rc);
+ }
+
+ /* 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);
+ rc = lfsck_layout_update_pfid(env, com, parent,
+ cfid, ltd->ltd_tgt, i);
+
+ CDEBUG(D_LFSCK, "%s layout LFSCK assistant "
+ "updated OST-object's pfid for "DFID
+ ": parent "DFID", OST-index %u, "
+ "stripe-index %u: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(cfid),
+ PFID(lfsck_dto2fid(parent)),
+ ltd->ltd_index, i, rc);
+
+ 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);
+
+ 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);
+
+ 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: layout LFSCK assistant starts 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);
+ rc = ostid_to_fid(fid, oi, ltd->ltd_index);
+ if (rc != 0)
+ GOTO(log, rc);
+
+ obj = lfsck_object_find_by_dev(env, ltd->ltd_tgt, fid);
+ if (unlikely(IS_ERR(obj)))
+ GOTO(log, rc = 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);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant finished 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;
+
+ if (!create)
+ GOTO(log, rc = 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)
+ GOTO(log, 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(lfsck_is_dead_obj(parent)))
+ 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);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant found dangling "
+ "reference for: parent "DFID", child "DFID", OST-index %u, "
+ "stripe-index %u, owner %u/%u. %s: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), 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" :
+ "Keep the MDT-object there by default", rc);
+
+ 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;
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ GOTO(log, 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(lfsck_is_dead_obj(parent)))
+ 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);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant repaired unmatched "
+ "MDT-OST pair for: parent "DFID", child "DFID", OST-index %u, "
+ "stripe-index %u, owner %u/%u: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), PFID(lfsck_dto2fid(parent)),
+ PFID(lfsck_dto2fid(child)), llr->llr_ost_idx, llr->llr_lov_idx,
+ pla->la_uid, pla->la_gid, rc);
+
+ 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 };
+ struct lu_buf ea_buf;
+ __u32 magic;
+ int rc;
+ ENTRY;
+
+ rc = lfsck_layout_lock(env, com, parent, &lh,
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ GOTO(log, 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);
+
+ child = container_of(o, struct dt_object, do_lu);
+ la->la_valid = LA_UID | LA_GID;
+ hint->dah_parent = NULL;
+ hint->dah_mode = 0;
+ dof->dof_type = DFT_REGULAR;
+ rc = dt_declare_create(env, child, la, NULL, NULL, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_declare_xattr_set(env, parent, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start(env, pdev, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, parent, 0);
+ if (unlikely(lfsck_is_dead_obj(parent)))
+ GOTO(unlock2, rc = 0);
+
+ rc = dt_xattr_get(env, parent, buf, XATTR_NAME_LOV, BYPASS_CAPA);
+ if (unlikely(rc == 0 || rc == -ENODATA || rc == -ERANGE))
+ GOTO(unlock2, rc = 0);
+
+ lmm = buf->lb_buf;
+ /* 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);
+
+ rc = dt_create(env, child, la, hint, dof, handle);
+ if (rc != 0)
+ GOTO(unlock2, 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];
+ }
+
+ lmm->lmm_layout_gen = cpu_to_le16(llr->llr_parent->llo_gen + 1);
+ fid_to_ostid(lu_object_fid(&child->do_lu), oi);
+ ostid_cpu_to_le(oi, &objs[llr->llr_lov_idx].l_ost_oi);
+ objs[llr->llr_lov_idx].l_ost_gen = cpu_to_le32(0);
+ objs[llr->llr_lov_idx].l_ost_idx = cpu_to_le32(llr->llr_ost_idx);
+ lfsck_buf_init(&ea_buf, lmm,
+ lov_mds_md_size(le16_to_cpu(lmm->lmm_stripe_count),
+ magic));
+ rc = dt_xattr_set(env, parent, &ea_buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle, BYPASS_CAPA);
+
+ GOTO(unlock2, rc = (rc == 0 ? 1 : rc));
+
+unlock2:
+ dt_write_unlock(env, parent);
+
+stop:
+ if (child != NULL)
+ lu_object_put(env, &child->do_lu);
+
+ dt_trans_stop(env, pdev, handle);
+
+unlock1:
+ lfsck_layout_unlock(&lh);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant repaired multiple "
+ "references for: parent "DFID", OST-index %u, stripe-index %u, "
+ "owner %u/%u: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), PFID(lfsck_dto2fid(parent)),
+ llr->llr_ost_idx, llr->llr_lov_idx, la->la_uid, la->la_gid, rc);
+
+ return rc;
+}
+
+/* If the MDT-object and the OST-object have different owner information,
+ * then trust the MDT-object, because the normal chown/chgrp handle order
+ * is from MDT to OST, and it is possible that some chown/chgrp operation
+ * is partly done. */
+static int lfsck_layout_repair_owner(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_layout_req *llr,
+ struct lu_attr *pla)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ 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);
+ struct thandle *handle;
+ int rc;
+ ENTRY;
+
+ handle = dt_trans_create(env, dev);
+ if (IS_ERR(handle))
+ GOTO(log, rc = PTR_ERR(handle));
+
+ tla->la_uid = pla->la_uid;
+ tla->la_gid = pla->la_gid;
+ tla->la_valid = LA_UID | 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);
+
+ /* Use the dt_object lock to serialize with destroy and attr_set. */
+ dt_read_lock(env, parent, 0);
+ if (unlikely(lfsck_is_dead_obj(parent)))
+ GOTO(unlock, rc = 1);
+
+ /* Get the latest parent's owner. */
+ rc = dt_attr_get(env, parent, tla, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* Some others chown/chgrp during the LFSCK, needs to do nothing. */
+ if (unlikely(tla->la_uid != pla->la_uid ||
+ tla->la_gid != pla->la_gid))
+ GOTO(unlock, rc = 1);
+
+ tla->la_valid = LA_UID | LA_GID;
+ rc = dt_attr_set(env, child, tla, handle, BYPASS_CAPA);
+
+ GOTO(unlock, rc);
+
+unlock:
+ dt_read_unlock(env, parent);
+
+stop:
+ rc = lfsck_layout_trans_stop(env, dev, handle, rc);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant repaired inconsistent "
+ "file owner for: parent "DFID", child "DFID", OST-index %u, "
+ "stripe-index %u, owner %u/%u: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), PFID(lfsck_dto2fid(parent)),
+ PFID(lfsck_dto2fid(child)), llr->llr_ost_idx, llr->llr_lov_idx,
+ pla->la_uid, pla->la_gid, rc);
+
+ return rc;
+}
+
+/* Check whether the OST-object correctly back points to the
+ * MDT-object (@parent) via the XATTR_NAME_FID xattr (@pfid). */
+static int lfsck_layout_check_parent(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *parent,
+ const struct lu_fid *pfid,
+ const struct lu_fid *cfid,
+ const struct lu_attr *pla,
+ const struct lu_attr *cla,
+ struct lfsck_layout_req *llr,
+ struct lu_buf *lov_ea, __u32 idx)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_buf *buf = &info->lti_big_buf;
+ struct dt_object *tobj;
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ int rc;
+ int i;
+ __u32 magic;
+ __u16 count;
+ ENTRY;
+
+ if (fid_is_zero(pfid)) {
+ /* client never wrote. */
+ if (cla->la_size == 0 && cla->la_blocks == 0) {
+ if (unlikely(cla->la_uid != pla->la_uid ||
+ cla->la_gid != pla->la_gid))
+ RETURN (LLIT_INCONSISTENT_OWNER);
+
+ RETURN(0);
+ }
+
+ RETURN(LLIT_UNMATCHED_PAIR);
+ }
+
+ if (unlikely(!fid_is_sane(pfid)))
+ RETURN(LLIT_UNMATCHED_PAIR);
+
+ if (lu_fid_eq(pfid, lu_object_fid(&parent->do_lu))) {
+ if (llr->llr_lov_idx == idx)
+ RETURN(0);
+
+ RETURN(LLIT_UNMATCHED_PAIR);
+ }
+
+ tobj = lfsck_object_find(env, com->lc_lfsck, pfid);
+ if (IS_ERR(tobj))
+ RETURN(PTR_ERR(tobj));
+
+ dt_read_lock(env, tobj, 0);
+ if (dt_object_exists(tobj) == 0 ||
+ lfsck_is_dead_obj(tobj))
+ GOTO(out, rc = LLIT_UNMATCHED_PAIR);
+
+ if (!S_ISREG(lfsck_object_type(tobj)))
+ GOTO(out, rc = LLIT_UNMATCHED_PAIR);
+
+ /* Load the tobj's layout EA, in spite of it is a local MDT-object or
+ * remote one on another MDT. Then check whether the given OST-object
+ * is in such layout. If yes, it is multiple referenced, otherwise it
+ * is unmatched referenced case. */
+ rc = lfsck_layout_get_lovea(env, tobj, buf);
+ if (rc == 0 || rc == -ENOENT)
+ GOTO(out, rc = LLIT_UNMATCHED_PAIR);
+
+ if (rc < 0)
+ GOTO(out, rc);
+
+ lmm = buf->lb_buf;
+ 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);
+ for (i = 0; i < count; i++, objs++) {
+ struct lu_fid *tfid = &info->lti_fid2;
+ struct ost_id *oi = &info->lti_oi;
+ __u32 idx2;
+
+ if (lovea_slot_is_dummy(objs))
+ continue;
+
+ ostid_le_to_cpu(&objs->l_ost_oi, oi);
+ idx2 = le32_to_cpu(objs->l_ost_idx);
+ rc = ostid_to_fid(tfid, oi, idx2);
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: the parent "DFID" contains "
+ "invalid layout EA at the slot %d, index %u\n",
+ lfsck_lfsck2name(com->lc_lfsck),
+ PFID(pfid), i, idx2);
+
+ GOTO(out, rc = LLIT_UNMATCHED_PAIR);
+ }
+
+ if (lu_fid_eq(cfid, tfid)) {
+ *lov_ea = *buf;
+
+ GOTO(out, rc = LLIT_MULTIPLE_REFERENCED);
+ }
+ }
+
+ GOTO(out, rc = LLIT_UNMATCHED_PAIR);
+
+out:
+ dt_read_unlock(env, tobj);
+ lfsck_object_put(env, tobj);
+
+ return rc;
+}
+
+static int lfsck_layout_assistant_handle_one(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_layout_req *llr)
+{
+ struct lfsck_layout *lo = com->lc_file_ram;
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct filter_fid_old *pea = &info->lti_old_pfid;
+ struct lu_fid *pfid = &info->lti_fid;
+ struct lu_buf buf = { 0 };
+ struct dt_object *parent = llr->llr_parent->llo_obj;
+ struct dt_object *child = llr->llr_child;
+ struct lu_attr *pla = &info->lti_la;
+ struct lu_attr *cla = &info->lti_la2;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ enum lfsck_layout_inconsistency_type type = LLIT_NONE;
+ __u32 idx = 0;
+ int rc;
+ ENTRY;
+
+ if (unlikely(lfsck_is_dead_obj(parent)))
+ RETURN(0);
+
+ rc = dt_attr_get(env, parent, pla, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_attr_get(env, child, cla, BYPASS_CAPA);
+ if (rc == -ENOENT) {
+ if (unlikely(lfsck_is_dead_obj(parent)))
+ RETURN(0);
+
+ type = LLIT_DANGLING;
+ goto repair;
+ }
+
+ if (rc != 0)
+ GOTO(out, rc);
+
+ lfsck_buf_init(&buf, pea, sizeof(struct filter_fid_old));
+ rc = dt_xattr_get(env, child, &buf, XATTR_NAME_FID, BYPASS_CAPA);
+ if (unlikely(rc >= 0 && rc != sizeof(struct filter_fid_old) &&
+ rc != sizeof(struct filter_fid))) {
+ type = LLIT_UNMATCHED_PAIR;
+ goto repair;
+ }
+
+ if (rc < 0 && rc != -ENODATA)
+ GOTO(out, rc);
+
+ if (rc == -ENODATA) {
+ fid_zero(pfid);
+ } else {
+ fid_le_to_cpu(pfid, &pea->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. */
+ idx = pfid->f_stripe_idx;
+ pfid->f_ver = 0;
+ }
+
+ rc = lfsck_layout_check_parent(env, com, parent, pfid,
+ lu_object_fid(&child->do_lu),
+ pla, cla, llr, &buf, idx);
+ if (rc > 0) {
+ type = rc;
+ goto repair;
+ }
+
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (unlikely(cla->la_uid != pla->la_uid ||
+ cla->la_gid != pla->la_gid)) {
+ type = LLIT_INCONSISTENT_OWNER;
+ goto repair;
+ }
+
+repair:
+ if (bk->lb_param & LPF_DRYRUN) {
+ if (type != LLIT_NONE)
+ GOTO(out, rc = 1);
+ else
+ GOTO(out, rc = 0);
+ }
+
+ switch (type) {
+ case LLIT_DANGLING:
+ rc = lfsck_layout_repair_dangling(env, com, llr, pla);
+ break;
+ case LLIT_UNMATCHED_PAIR:
+ rc = lfsck_layout_repair_unmatched_pair(env, com, llr, pla);
+ break;
+ case LLIT_MULTIPLE_REFERENCED:
+ rc = lfsck_layout_repair_multiple_references(env, com, llr,
+ pla, &buf);
+ break;
+ case LLIT_INCONSISTENT_OWNER:
+ rc = lfsck_layout_repair_owner(env, com, llr, pla);
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+
+ GOTO(out, rc);
+
+out:
+ down_write(&com->lc_sem);
+ if (rc < 0) {
+ 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. */
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant 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 {
+ 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);
+
+ return rc;
+}
+
+static int lfsck_layout_assistant(void *args)
{
struct lfsck_thread_args *lta = args;
struct lu_env *env = <a->lta_env;
struct l_wait_info lwi = { 0 };
int rc = 0;
int rc1 = 0;
- __u32 flags;
ENTRY;
- if (lta->lta_lsp->lsp_start != NULL)
- flags = lta->lta_lsp->lsp_start->ls_flags;
- else
- flags = bk->lb_param;
memset(lr, 0, sizeof(*lr));
lr->lr_event = LE_START;
- lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
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;
lr->lr_async_windows = bk->lb_async_windows;
+ lr->lr_flags = LEF_TO_OST;
if (pos->lp_oit_cookie <= 1)
lr->lr_param |= LPF_RESET;
- rc = lfsck_layout_master_notify_others(env, com, lr, flags);
+ rc = lfsck_layout_master_notify_others(env, com, lr);
if (rc != 0) {
- CERROR("%s: fail to notify others for layout start: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant failed to notify "
+ "others for LFSCK start: rc = %d\n",
lfsck_lfsck2name(lfsck), rc);
GOTO(fini, rc);
}
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);
- /* XXX: To be extended in other patch.
- *
- * Compare the OST side attribute with local attribute,
- * and fix it if found inconsistency. */
-
- spin_lock(&llmd->llmd_lock);
llr = list_entry(llmd->llmd_req_list.next,
struct lfsck_layout_req,
llr_list);
+ /* Only the lfsck_layout_assistant thread itself can
+ * remove the "llr" from the head of the list, LFSCK
+ * engine thread only inserts other new "lld" at the
+ * end of the list. So it is safe to handle current
+ * "llr" without the spin_lock. */
+ 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);
lfsck_layout_req_fini(env, llr);
+ if (rc < 0 && bk->lb_param & LPF_FAILOUT)
+ 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 ||
LASSERT(llmd->llmd_post_result > 0);
memset(lr, 0, sizeof(*lr));
- lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
lr->lr_event = LE_PHASE1_DONE;
lr->lr_status = llmd->llmd_post_result;
- rc = lfsck_layout_master_notify_others(env, com, lr, 0);
+ rc = lfsck_layout_master_notify_others(env, com, lr);
if (rc != 0)
- CERROR("%s: failed to notify others "
- "for layout post: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant "
+ "failed to notify others for LFSCK "
+ "post: rc = %d\n",
lfsck_lfsck2name(lfsck), rc);
/* Wakeup the master engine to go ahead. */
llmd->llmd_in_double_scan = 1;
wake_up_all(&mthread->t_ctl_waitq);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant phase2 "
+ "scan start\n", lfsck_lfsck2name(lfsck));
+
+ 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)))
cleanup1:
/* Cleanup the unfinished requests. */
spin_lock(&llmd->llmd_lock);
+ if (rc < 0)
+ llmd->llmd_assistant_status = rc;
+
while (!list_empty(&llmd->llmd_req_list)) {
llr = list_entry(llmd->llmd_req_list.next,
struct lfsck_layout_req,
cleanup2:
memset(lr, 0, sizeof(*lr));
- lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
if (rc > 0) {
lr->lr_event = LE_PHASE2_DONE;
- flags = 0;
lr->lr_status = rc;
} else if (rc == 0) {
- lr->lr_event = LE_STOP;
- if (lfsck->li_status == LS_PAUSED ||
- lfsck->li_status == LS_CO_PAUSED) {
- flags = 0;
- lr->lr_status = LS_CO_PAUSED;
- } else if (lfsck->li_status == LS_STOPPED ||
- lfsck->li_status == LS_CO_STOPPED) {
- flags = lfsck->li_flags;
- if (flags & LPF_BROADCAST)
- lr->lr_status = LS_STOPPED;
- else
- lr->lr_status = LS_CO_STOPPED;
+ if (lfsck->li_flags & LPF_ALL_TGT) {
+ lr->lr_event = LE_STOP;
+ lr->lr_status = LS_STOPPED;
} else {
- LBUG();
+ lr->lr_event = LE_PEER_EXIT;
+ switch (lfsck->li_status) {
+ case LS_PAUSED:
+ case LS_CO_PAUSED:
+ lr->lr_status = LS_CO_PAUSED;
+ break;
+ case LS_STOPPED:
+ case LS_CO_STOPPED:
+ lr->lr_status = LS_CO_STOPPED;
+ break;
+ default:
+ CDEBUG(D_LFSCK, "%s: unknown status: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
+ lfsck->li_status);
+ lr->lr_status = LS_CO_FAILED;
+ break;
+ }
}
} else {
- lr->lr_event = LE_STOP;
- flags = 0;
- lr->lr_status = LS_CO_FAILED;
+ if (lfsck->li_flags & LPF_ALL_TGT) {
+ lr->lr_event = LE_STOP;
+ lr->lr_status = LS_FAILED;
+ } else {
+ lr->lr_event = LE_PEER_EXIT;
+ lr->lr_status = LS_CO_FAILED;
+ }
}
- rc1 = lfsck_layout_master_notify_others(env, com, lr, flags);
+ rc1 = lfsck_layout_master_notify_others(env, com, lr);
if (rc1 != 0) {
- CERROR("%s: failed to notify others for layout quit: rc = %d\n",
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant failed to "
+ "notify others for LFSCK quit: rc = %d\n",
lfsck_lfsck2name(lfsck), rc1);
rc = rc1;
}
+ /* flush all async updating before exit. */
+ dt_sync(env, lfsck->li_next);
+
/* 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)
- rc1 = lfsck_layout_double_scan_result(env, com, rc);
+ if (llmd->llmd_in_double_scan) {
+ struct lfsck_layout *lo = com->lc_file_ram;
+
+ if (!llmd->llmd_exit)
+ rc1 = lfsck_layout_double_scan_result(env, com, rc);
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK assistant phase2 scan "
+ "finished, status %d: rc = %d\n",
+ lfsck_lfsck2name(lfsck), lo->ll_status, rc1);
+ }
fini:
if (llmd->llmd_in_double_scan)
struct lfsck_component *com = llsaa->llsaa_com;
struct lfsck_layout_slave_target *llst = llsaa->llsaa_llst;
struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct lfsck_reply *lr = NULL;
bool done = false;
if (rc != 0) {
* the target finished the LFSCK prcoessing. */
done = true;
} else {
- struct lfsck_reply *lr;
-
lr = req_capsule_server_get(&req->rq_pill, &RMF_LFSCK_REPLY);
if (lr->lr_status != LS_SCANNING_PHASE1 &&
lr->lr_status != LS_SCANNING_PHASE2)
done = true;
}
- if (done)
+
+ if (done) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave gets the MDT %x "
+ "status %d\n", lfsck_lfsck2name(com->lc_lfsck),
+ llst->llst_index, lr != NULL ? lr->lr_status : rc);
+
lfsck_layout_llst_del(llsd, llst);
+ }
+
lfsck_layout_llst_put(llst);
lfsck_component_put(env, com);
class_export_put(exp);
struct lfsck_layout_slave_target *llst;
struct obd_export *exp;
struct ptlrpc_request_set *set;
- int cnt = 0;
int rc = 0;
int rc1 = 0;
ENTRY;
set = ptlrpc_prep_set();
if (set == NULL)
- RETURN(-ENOMEM);
+ GOTO(log, rc = -ENOMEM);
memset(lr, 0, sizeof(*lr));
lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
lr->lr_event = LE_QUERY;
- lr->lr_active = LT_LAYOUT;
+ lr->lr_active = LFSCK_TYPE_LAYOUT;
llsd->llsd_touch_gen++;
spin_lock(&llsd->llsd_lock);
break;
llst->llst_gen = llsd->llsd_touch_gen;
- list_del(&llst->llst_list);
- list_add_tail(&llst->llst_list,
- &llsd->llsd_master_list);
+ list_move_tail(&llst->llst_list,
+ &llsd->llsd_master_list);
atomic_inc(&llst->llst_ref);
spin_unlock(&llsd->llsd_lock);
rc = lfsck_layout_async_query(env, com, exp, llst, lr, set);
if (rc != 0) {
- CERROR("%s: slave fail to query %s for layout: "
- "rc = %d\n", lfsck_lfsck2name(lfsck),
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave fail to "
+ "query %s for layout: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
exp->exp_obd->obd_name, rc);
+
rc1 = rc;
lfsck_layout_llst_put(llst);
class_export_put(exp);
- } else {
- cnt++;
}
spin_lock(&llsd->llsd_lock);
}
- spin_unlock(&llsd->llsd_lock);
+ spin_unlock(&llsd->llsd_lock);
+
+ rc = ptlrpc_set_wait(set);
+ ptlrpc_set_destroy(set);
+
+ GOTO(log, rc = (rc1 != 0 ? rc1 : rc));
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave queries master: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), rc);
+
+ return rc;
+}
+
+static void
+lfsck_layout_slave_notify_master(const struct lu_env *env,
+ struct lfsck_component *com,
+ enum lfsck_events event, int result)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_layout_slave_data *llsd = com->lc_data;
+ struct lfsck_request *lr = &lfsck_env_info(env)->lti_lr;
+ struct lfsck_layout_slave_target *llst;
+ struct obd_export *exp;
+ struct ptlrpc_request_set *set;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave notifies master\n",
+ lfsck_lfsck2name(com->lc_lfsck));
+
+ set = ptlrpc_prep_set();
+ if (set == NULL)
+ RETURN_EXIT;
+
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = event;
+ lr->lr_flags = LEF_FROM_OST;
+ lr->lr_status = result;
+ lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
+ lr->lr_active = LFSCK_TYPE_LAYOUT;
+ llsd->llsd_touch_gen++;
+ spin_lock(&llsd->llsd_lock);
+ while (!list_empty(&llsd->llsd_master_list)) {
+ llst = list_entry(llsd->llsd_master_list.next,
+ struct lfsck_layout_slave_target,
+ llst_list);
+ if (llst->llst_gen == llsd->llsd_touch_gen)
+ break;
+
+ llst->llst_gen = llsd->llsd_touch_gen;
+ list_move_tail(&llst->llst_list,
+ &llsd->llsd_master_list);
+ atomic_inc(&llst->llst_ref);
+ spin_unlock(&llsd->llsd_lock);
+
+ exp = lustre_find_lwp_by_index(lfsck->li_obd->obd_name,
+ llst->llst_index);
+ if (exp == NULL) {
+ lfsck_layout_llst_del(llsd, llst);
+ lfsck_layout_llst_put(llst);
+ spin_lock(&llsd->llsd_lock);
+ continue;
+ }
+
+ rc = lfsck_layout_async_notify(env, exp, lr, set);
+ if (rc != 0)
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave fail to "
+ "notify %s for layout: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
+ exp->exp_obd->obd_name, rc);
+
+ lfsck_layout_llst_put(llst);
+ class_export_put(exp);
+ spin_lock(&llsd->llsd_lock);
+ }
+ spin_unlock(&llsd->llsd_lock);
+
+ ptlrpc_set_wait(set);
+ ptlrpc_set_destroy(set);
+
+ 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) == 0 ||
+ lfsck_is_dead_obj(obj)))
+ GOTO(unlock, rc = -ENOENT);
+
+ if (!S_ISREG(lfsck_object_type(obj)))
+ GOTO(unlock, rc = -ENODATA);
+
+ rc = lfsck_layout_get_lovea(env, obj, buf);
+ 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);
+ }
- if (cnt > 0)
- rc = ptlrpc_set_wait(set);
- ptlrpc_set_destroy(set);
+ 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 = LFSCK_TYPE_LAYOUT;
+ lr->lr_fid = *cfid; /* OST-object itself FID. */
+ lr->lr_fid2 = *pfid; /* The claimed parent FID. */
- RETURN(rc1 != 0 ? rc1 : rc);
+ 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 void
-lfsck_layout_slave_notify_master(const struct lu_env *env,
- struct lfsck_component *com,
- enum lfsck_events event, int result)
+static int lfsck_layout_slave_repair_pfid(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_request *lr)
{
- struct lfsck_instance *lfsck = com->lc_lfsck;
- struct lfsck_layout_slave_data *llsd = com->lc_data;
- struct lfsck_request *lr = &lfsck_env_info(env)->lti_lr;
- struct lfsck_layout_slave_target *llst;
- struct obd_export *exp;
- struct ptlrpc_request_set *set;
- int cnt = 0;
- int rc;
+ 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;
- set = ptlrpc_prep_set();
- if (set == NULL)
- RETURN_EXIT;
+ obj = lfsck_object_find_by_dev(env, dev, &lr->lr_fid);
+ if (IS_ERR(obj))
+ GOTO(log, rc = PTR_ERR(obj));
- memset(lr, 0, sizeof(*lr));
- lr->lr_event = event;
- lr->lr_flags = LEF_FROM_OST;
- lr->lr_status = result;
- lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
- lr->lr_active = LT_LAYOUT;
- llsd->llsd_touch_gen++;
- spin_lock(&llsd->llsd_lock);
- while (!list_empty(&llsd->llsd_master_list)) {
- llst = list_entry(llsd->llsd_master_list.next,
- struct lfsck_layout_slave_target,
- llst_list);
- if (llst->llst_gen == llsd->llsd_touch_gen)
- break;
+ 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) == 0 ||
+ lfsck_is_dead_obj(obj)))
+ GOTO(unlock, rc = 0);
- llst->llst_gen = llsd->llsd_touch_gen;
- list_del(&llst->llst_list);
- list_add_tail(&llst->llst_list,
- &llsd->llsd_master_list);
- atomic_inc(&llst->llst_ref);
- spin_unlock(&llsd->llsd_lock);
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
- exp = lustre_find_lwp_by_index(lfsck->li_obd->obd_name,
- llst->llst_index);
- if (exp == NULL) {
- lfsck_layout_llst_del(llsd, llst);
- lfsck_layout_llst_put(llst);
- spin_lock(&llsd->llsd_lock);
- continue;
- }
+ rc = dt_declare_xattr_set(env, obj, buf, XATTR_NAME_FID, 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- rc = lfsck_layout_async_notify(env, exp, lr, set);
- if (rc != 0)
- CERROR("%s: slave fail to notify %s for layout: "
- "rc = %d\n", lfsck_lfsck2name(lfsck),
- exp->exp_obd->obd_name, rc);
- else
- cnt++;
- lfsck_layout_llst_put(llst);
- class_export_put(exp);
- spin_lock(&llsd->llsd_lock);
- }
- spin_unlock(&llsd->llsd_lock);
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- if (cnt > 0)
- rc = ptlrpc_set_wait(set);
+ rc = dt_xattr_set(env, obj, buf, XATTR_NAME_FID, 0, th, BYPASS_CAPA);
- ptlrpc_set_destroy(set);
+ GOTO(stop, rc);
- RETURN_EXIT;
+stop:
+ dt_trans_stop(env, dev, th);
+
+unlock:
+ dt_write_unlock(env, obj);
+ lu_object_put(env, &obj->do_lu);
+
+log:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave repaired pfid for "DFID
+ ", parent "DFID": rc = %d\n", lfsck_lfsck2name(com->lc_lfsck),
+ PFID(&lr->lr_fid), PFID(&lr->lr_fid2), rc);
+
+ return rc;
}
/* layout APIs */
rc = lfsck_layout_store(env, com);
up_write(&com->lc_sem);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK reset: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), rc);
+
return rc;
}
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);
}
rc = lfsck_layout_store(env, com);
up_write(&com->lc_sem);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK master checkpoint at the pos ["
+ LPU64"]: rc = %d\n", lfsck_lfsck2name(lfsck),
+ lfsck->li_pos_current.lp_oit_cookie, rc);
+
return rc;
}
return 0;
down_write(&com->lc_sem);
-
if (init) {
lo->ll_pos_latest_start = lfsck->li_pos_current.lp_oit_cookie;
} else {
}
rc = lfsck_layout_store(env, com);
-
up_write(&com->lc_sem);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave checkpoint at the pos ["
+ LPU64"]: rc = %d\n", lfsck_lfsck2name(lfsck),
+ lfsck->li_pos_current.lp_oit_cookie, rc);
+
return rc;
}
static int lfsck_layout_prep(const struct lu_env *env,
- struct lfsck_component *com)
+ struct lfsck_component *com,
+ struct lfsck_start *start)
{
struct lfsck_instance *lfsck = com->lc_lfsck;
struct lfsck_layout *lo = com->lc_file_ram;
fid_zero(&pos->lp_dir_parent);
pos->lp_dir_cookie = 0;
if (lo->ll_status == LS_COMPLETED ||
- lo->ll_status == LS_PARTIAL) {
+ lo->ll_status == LS_PARTIAL ||
+ /* To handle orphan, must scan from the beginning. */
+ (start != NULL && start->ls_flags & LPF_ORPHAN)) {
int rc;
rc = lfsck_layout_reset(env, com, false);
- if (rc != 0)
+ if (rc == 0)
+ rc = lfsck_set_param(env, lfsck, start, true);
+
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK prep failed: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck), rc);
+
return rc;
+ }
}
down_write(&com->lc_sem);
-
lo->ll_time_latest_start = cfs_time_current_sec();
-
spin_lock(&lfsck->li_lock);
if (lo->ll_flags & LF_SCANNED_ONCE) {
if (!lfsck->li_drop_dryrun ||
lo->ll_pos_first_inconsistent == 0) {
lo->ll_status = LS_SCANNING_PHASE2;
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link,
- &lfsck->li_list_double_scan);
+ list_move_tail(&com->lc_link,
+ &lfsck->li_list_double_scan);
pos->lp_oit_cookie = 0;
} else {
int i;
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;
pos->lp_oit_cookie = lo->ll_pos_first_inconsistent;
}
spin_unlock(&lfsck->li_lock);
-
up_write(&com->lc_sem);
return 0;
struct lfsck_component *com,
struct lfsck_start_param *lsp)
{
- struct lfsck_layout *lo = com->lc_file_ram;
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;
- /* XXX: For a new scanning, generate OST-objects
- * bitmap for orphan detection. */
-
- rc = lfsck_layout_prep(env, com);
- if (rc != 0 || lo->ll_status != LS_SCANNING_PHASE1 ||
- !lsp->lsp_index_valid)
+ rc = lfsck_layout_prep(env, com, start);
+ 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);
+
+ write_lock(&llsd->llsd_rb_lock);
+ rc = lfsck_rbtree_setup(env, com);
+ write_unlock(&llsd->llsd_rb_lock);
+ }
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave prep done, start pos ["
+ LPU64"]\n", lfsck_lfsck2name(lfsck),
+ com->lc_pos_start.lp_oit_cookie);
return rc;
}
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);
+ rc = lfsck_layout_prep(env, com, lsp->lsp_start);
if (rc != 0)
RETURN(rc);
if (IS_ERR(lta))
RETURN(PTR_ERR(lta));
- rc = PTR_ERR(kthread_run(lfsck_layout_assistant, lta, "lfsck_layout"));
- if (IS_ERR_VALUE(rc)) {
- CERROR("%s: Cannot start LFSCK layout assistant thread: "
- "rc = %ld\n", lfsck_lfsck2name(lfsck), 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 = %d\n", lfsck_lfsck2name(lfsck), rc);
lfsck_thread_args_fini(lta);
} else {
struct l_wait_info lwi = { 0 };
rc = 0;
}
+ CDEBUG(D_LFSCK, "%s: layout LFSCK master prep done, start pos ["
+ LPU64"\n", lfsck_lfsck2name(lfsck),
+ com->lc_pos_start.lp_oit_cookie);
+
RETURN(rc);
}
struct ptlrpc_thread *mthread = &lfsck->li_thread;
struct ptlrpc_thread *athread = &llmd->llmd_thread;
struct l_wait_info lwi = { 0 };
- struct lu_buf *buf;
+ struct lu_buf buf;
int rc = 0;
int i;
+ __u32 magic;
__u16 count;
__u16 gen;
ENTRY;
- buf = lfsck_buf_get(env, &info->lti_pfid,
- sizeof(struct filter_fid_old));
+ lfsck_buf_init(&buf, &info->lti_old_pfid,
+ sizeof(struct filter_fid_old));
count = le16_to_cpu(lmm->lmm_stripe_count);
gen = le16_to_cpu(lmm->lmm_layout_gen);
- if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1)
- objs = &(lmm->lmm_objects[0]);
- else
+ /* 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];
+ }
for (i = 0; i < count; i++, objs++) {
struct lu_fid *fid = &info->lti_fid;
struct lfsck_layout_req *llr;
struct lfsck_tgt_desc *tgt = NULL;
struct dt_object *cobj = NULL;
- __u32 index =
- le32_to_cpu(objs->l_ost_idx);
+ __u32 index;
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 ||
thread_is_stopped(athread))
GOTO(out, rc = 0);
+ if (unlikely(lfsck_is_dead_obj(parent)))
+ GOTO(out, rc = 0);
+
ostid_le_to_cpu(&objs->l_ost_oi, oi);
- ostid_to_fid(fid, oi, index);
+ index = le32_to_cpu(objs->l_ost_idx);
+ rc = ostid_to_fid(fid, oi, index);
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: get invalid layout EA for "DFID
+ ": "DOSTID", idx:%u\n", lfsck_lfsck2name(lfsck),
+ PFID(lfsck_dto2fid(parent)), POSTID(oi), index);
+ goto next;
+ }
+
tgt = lfsck_tgt_get(ltds, index);
if (unlikely(tgt == NULL)) {
+ CDEBUG(D_LFSCK, "%s: cannot talk with OST %x which "
+ "did not join the layout LFSCK\n",
+ lfsck_lfsck2name(lfsck), index);
lo->ll_flags |= LF_INCOMPLETE;
goto next;
}
- cobj = lfsck_object_find_by_dev(env, tgt->ltd_tgt, fid);
+ /* There is potential deadlock race condition between object
+ * destroy and layout LFSCK. Consider the following scenario:
+ *
+ * 1) The LFSCK thread obtained the parent object firstly, at
+ * that time, the parent object has not been destroyed yet.
+ *
+ * 2) One RPC service thread destroyed the parent and all its
+ * children objects. Because the LFSCK is referencing the
+ * parent object, then the parent object will be marked as
+ * dying in RAM. On the other hand, the parent object is
+ * referencing all its children objects, then all children
+ * objects will be marked as dying in RAM also.
+ *
+ * 3) The LFSCK thread tries to find some child object with
+ * the parent object referenced. Then it will find that the
+ * child object is dying. According to the object visibility
+ * rules: the object with dying flag cannot be returned to
+ * others. So the LFSCK thread has to wait until the dying
+ * object has been purged from RAM, then it can allocate a
+ * new object (with the same FID) in RAM. Unfortunately, the
+ * LFSCK thread itself is referencing the parent object, and
+ * cause the parent object cannot be purged, then cause the
+ * child object cannot be purged also. So the LFSCK thread
+ * will fall into deadlock.
+ *
+ * We introduce non-blocked version lu_object_find() to allow
+ * the LFSCK thread to return failure immediately (instead of
+ * wait) when it finds dying (child) object, then the LFSCK
+ * thread can check whether the parent object is dying or not.
+ * So avoid above deadlock. LU-5395 */
+ cobj = lfsck_object_find_by_dev_nowait(env, tgt->ltd_tgt, fid);
if (IS_ERR(cobj)) {
+ if (lfsck_is_dead_obj(parent)) {
+ lfsck_tgt_put(tgt);
+
+ GOTO(out, rc = 0);
+ }
+
rc = PTR_ERR(cobj);
goto next;
}
if (rc != 0)
goto next;
- rc = dt_declare_xattr_get(env, cobj, buf, XATTR_NAME_FID,
+ rc = dt_declare_xattr_get(env, cobj, &buf, XATTR_NAME_FID,
BYPASS_CAPA);
if (rc != 0)
goto next;
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))
struct lov_mds_md_v1 *lmm = NULL;
struct dt_device *dev = lfsck->li_bottom;
struct lustre_handle lh = { 0 };
- ssize_t buflen = buf->lb_len;
+ struct lu_buf ea_buf = { 0 };
int rc = 0;
+ int size = 0;
bool locked = false;
bool stripe = false;
+ bool bad_oi = false;
ENTRY;
if (!S_ISREG(lfsck_object_type(obj)))
locked = true;
again:
- rc = lfsck_layout_get_lovea(env, obj, buf, &buflen);
+ if (dt_object_exists(obj) == 0 ||
+ lfsck_is_dead_obj(obj))
+ GOTO(out, rc = 0);
+
+ rc = lfsck_layout_get_lovea(env, obj, buf);
if (rc <= 0)
GOTO(out, rc);
- buf->lb_len = rc;
+ size = 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);
GOTO(out, stripe = true);
/* Inconsistent lmm_oi, should be repaired. */
- CDEBUG(D_LFSCK, "Repair bad lmm_oi for "DFID"\n",
- PFID(lfsck_dto2fid(obj)));
+ bad_oi = true;
+ lmm->lmm_oi = *oi;
if (bk->lb_param & LPF_DRYRUN) {
down_write(&com->lc_sem);
if (!lustre_handle_is_used(&lh)) {
dt_read_unlock(env, obj);
locked = false;
- buf->lb_len = buflen;
rc = lfsck_layout_lock(env, com, obj, &lh,
MDS_INODELOCK_LAYOUT |
MDS_INODELOCK_XATTR);
if (IS_ERR(handle))
GOTO(out, rc = PTR_ERR(handle));
- rc = dt_declare_xattr_set(env, obj, buf, XATTR_NAME_LOV,
+ lfsck_buf_init(&ea_buf, lmm, size);
+ rc = dt_declare_xattr_set(env, obj, &ea_buf, XATTR_NAME_LOV,
LU_XATTR_REPLACE, handle);
if (rc != 0)
GOTO(out, rc);
goto again;
}
- lmm->lmm_oi = *oi;
- rc = dt_xattr_set(env, obj, buf, XATTR_NAME_LOV,
+ rc = dt_xattr_set(env, obj, &ea_buf, XATTR_NAME_LOV,
LU_XATTR_REPLACE, handle, BYPASS_CAPA);
if (rc != 0)
GOTO(out, rc);
dt_trans_stop(env, dev, handle);
lfsck_layout_unlock(&lh);
+
+ if (bad_oi)
+ CDEBUG(D_LFSCK, "%s: layout LFSCK master %s bad lmm_oi for "
+ DFID": rc = %d\n", lfsck_lfsck2name(lfsck),
+ bk->lb_param & LPF_DRYRUN ? "found" : "repaired",
+ PFID(lfsck_dto2fid(obj)), rc);
+
if (stripe) {
rc = lfsck_layout_scan_stripes(env, com, obj, lmm);
} else {
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;
return rc;
}
int rc;
ENTRY;
- /* XXX: Update OST-objects bitmap for orphan detection. */
-
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);
if (fid_is_idif(fid))
seq = 0;
lls->lls_seq = seq;
rc = lfsck_layout_lastid_load(env, com, lls);
if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK failed to "
+ "load LAST_ID for "LPX64": rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), seq, rc);
lo->ll_objs_failed_phase1++;
OBD_FREE_PTR(lls);
GOTO(unlock, rc);
if (unlikely(fid_is_last_id(fid)))
GOTO(unlock, rc = 0);
- oid = fid_oid(fid);
+ if (fid_is_idif(fid))
+ oid = fid_idif_id(fid_seq(fid), fid_oid(fid), fid_ver(fid));
+ else
+ oid = fid_oid(fid);
+
if (oid > lls->lls_lastid_known)
lls->lls_lastid_known = oid;
if (!(lo->ll_flags & LF_CRASHED_LASTID)) {
/* OFD may create new objects during LFSCK scanning. */
rc = lfsck_layout_lastid_reload(env, com, lls);
- if (unlikely(rc != 0))
- CWARN("%s: failed to reload LAST_ID for "LPX64
- ": rc = %d\n",
+ if (unlikely(rc != 0)) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK failed to "
+ "reload LAST_ID for "LPX64": rc = %d\n",
lfsck_lfsck2name(com->lc_lfsck),
lls->lls_seq, rc);
- if (oid <= lls->lls_lastid)
+
+ GOTO(unlock, rc);
+ }
+
+ if (oid <= lls->lls_lastid ||
+ lo->ll_flags & LF_CRASHED_LASTID)
GOTO(unlock, rc = 0);
LASSERT(lfsck->li_out_notify != NULL);
lfsck->li_out_notify(env, lfsck->li_out_notify_data,
LE_LASTID_REBUILDING);
lo->ll_flags |= LF_CRASHED_LASTID;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK finds crashed "
+ "LAST_ID file (2) for the sequence "LPX64
+ ", old value "LPU64", known value "LPU64"\n",
+ lfsck_lfsck2name(lfsck), lls->lls_seq,
+ lls->lls_lastid, oid);
}
lls->lls_lastid = oid;
lo->ll_status = LS_SCANNING_PHASE2;
lo->ll_flags |= LF_SCANNED_ONCE;
lo->ll_flags &= ~LF_UPGRADE;
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_double_scan);
+ list_move_tail(&com->lc_link, &lfsck->li_list_double_scan);
} else if (result == 0) {
lo->ll_status = lfsck->li_status;
if (lo->ll_status == 0)
lo->ll_status = LS_STOPPED;
if (lo->ll_status != LS_PAUSED) {
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_idle);
+ list_move_tail(&com->lc_link, &lfsck->li_list_idle);
}
} else {
lo->ll_status = LS_FAILED;
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_idle);
+ list_move_tail(&com->lc_link, &lfsck->li_list_idle);
}
spin_unlock(&lfsck->li_lock);
rc = lfsck_layout_store(env, com);
up_write(&com->lc_sem);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK master post done: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+
RETURN(rc);
}
LASSERT(lfsck->li_out_notify != NULL);
down_write(&com->lc_sem);
-
spin_lock(&lfsck->li_lock);
if (!init)
lo->ll_pos_last_checkpoint =
if (lo->ll_flags & LF_CRASHED_LASTID) {
done = true;
lo->ll_flags &= ~LF_CRASHED_LASTID;
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK has rebuilt "
+ "crashed LAST_ID files successfully\n",
+ lfsck_lfsck2name(lfsck));
}
lo->ll_flags &= ~LF_UPGRADE;
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_double_scan);
+ list_move_tail(&com->lc_link, &lfsck->li_list_double_scan);
} else if (result == 0) {
lo->ll_status = lfsck->li_status;
if (lo->ll_status == 0)
lo->ll_status = LS_STOPPED;
- if (lo->ll_status != LS_PAUSED) {
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_idle);
- }
+ if (lo->ll_status != LS_PAUSED)
+ list_move_tail(&com->lc_link, &lfsck->li_list_idle);
} else {
lo->ll_status = LS_FAILED;
- list_del_init(&com->lc_link);
- list_add_tail(&com->lc_link, &lfsck->li_list_idle);
+ list_move_tail(&com->lc_link, &lfsck->li_list_idle);
}
spin_unlock(&lfsck->li_lock);
}
rc = lfsck_layout_store(env, com);
-
up_write(&com->lc_sem);
lfsck_layout_slave_notify_master(env, com, LE_PHASE1_DONE, result);
+ if (result <= 0)
+ lfsck_rbtree_cleanup(env, com);
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave post done: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+
return rc;
}
static int lfsck_layout_dump(const struct lu_env *env,
- struct lfsck_component *com, char *buf, int len)
+ struct lfsck_component *com, struct seq_file *m)
{
struct lfsck_instance *lfsck = com->lc_lfsck;
struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
struct lfsck_layout *lo = com->lc_file_ram;
- int save = len;
- int ret = -ENOSPC;
int rc;
down_read(&com->lc_sem);
- rc = snprintf(buf, len,
- "name: lfsck_layout\n"
+ seq_printf(m, "name: lfsck_layout\n"
"magic: %#x\n"
"version: %d\n"
"status: %s\n",
lo->ll_magic,
bk->lb_version,
lfsck_status2names(lo->ll_status));
- if (rc <= 0)
- goto out;
- buf += rc;
- len -= rc;
- rc = lfsck_bits_dump(&buf, &len, lo->ll_flags, lfsck_flags_names,
- "flags");
+ rc = lfsck_bits_dump(m, lo->ll_flags, lfsck_flags_names, "flags");
if (rc < 0)
goto out;
- rc = lfsck_bits_dump(&buf, &len, bk->lb_param, lfsck_param_names,
- "param");
+ rc = lfsck_bits_dump(m, bk->lb_param, lfsck_param_names, "param");
if (rc < 0)
goto out;
- rc = lfsck_time_dump(&buf, &len, lo->ll_time_last_complete,
+ rc = lfsck_time_dump(m, lo->ll_time_last_complete,
"time_since_last_completed");
if (rc < 0)
goto out;
- rc = lfsck_time_dump(&buf, &len, lo->ll_time_latest_start,
+ rc = lfsck_time_dump(m, lo->ll_time_latest_start,
"time_since_latest_start");
if (rc < 0)
goto out;
- rc = lfsck_time_dump(&buf, &len, lo->ll_time_last_checkpoint,
+ rc = lfsck_time_dump(m, lo->ll_time_last_checkpoint,
"time_since_last_checkpoint");
if (rc < 0)
goto out;
- rc = snprintf(buf, len,
- "latest_start_position: "LPU64"\n"
+ seq_printf(m, "latest_start_position: "LPU64"\n"
"last_checkpoint_position: "LPU64"\n"
"first_failure_position: "LPU64"\n",
lo->ll_pos_latest_start,
lo->ll_pos_last_checkpoint,
lo->ll_pos_first_inconsistent);
- if (rc <= 0)
- goto out;
-
- buf += rc;
- len -= rc;
- rc = snprintf(buf, len,
- "success_count: %u\n"
+ seq_printf(m, "success_count: %u\n"
"repaired_dangling: "LPU64"\n"
"repaired_unmatched_pair: "LPU64"\n"
"repaired_multiple_referenced: "LPU64"\n"
lo->ll_objs_skipped,
lo->ll_objs_failed_phase1,
lo->ll_objs_failed_phase2);
- if (rc <= 0)
- goto out;
-
- buf += rc;
- len -= rc;
if (lo->ll_status == LS_SCANNING_PHASE1) {
__u64 pos;
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 +
do_div(new_checked, duration);
if (rtime != 0)
do_div(speed, rtime);
- rc = snprintf(buf, len,
- "checked_phase1: "LPU64"\n"
+ seq_printf(m, "checked_phase1: "LPU64"\n"
"checked_phase2: "LPU64"\n"
"run_time_phase1: %u seconds\n"
"run_time_phase2: %u seconds\n"
lo->ll_run_time_phase2,
speed,
new_checked);
- if (rc <= 0)
- goto out;
-
- buf += rc;
- len -= rc;
LASSERT(lfsck->li_di_oit != NULL);
pos = iops->store(env, lfsck->li_di_oit);
if (!lfsck->li_current_oit_processed)
pos--;
- rc = snprintf(buf, len, "current_position: "LPU64"\n", pos);
+ seq_printf(m, "current_position: "LPU64"\n", pos);
+
+ } 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 = seq_printf(m, "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;
do_div(speed1, lo->ll_run_time_phase1);
if (lo->ll_run_time_phase2 != 0)
do_div(speed2, lo->ll_run_time_phase2);
- 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" objs/sec\n"
- "real-time_speed_phase1: N/A\n"
- "real-time_speed_phase2: N/A\n"
- "current_position: N/A\n",
- lo->ll_objs_checked_phase1,
- lo->ll_objs_checked_phase2,
- lo->ll_run_time_phase1,
- lo->ll_run_time_phase2,
- speed1,
- speed2);
- if (rc <= 0)
- goto out;
-
- buf += rc;
- len -= rc;
+ seq_printf(m, "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" objs/sec\n"
+ "real-time_speed_phase1: N/A\n"
+ "real-time_speed_phase2: N/A\n"
+ "current_position: N/A\n",
+ lo->ll_objs_checked_phase1,
+ lo->ll_objs_checked_phase2,
+ lo->ll_run_time_phase1,
+ lo->ll_run_time_phase2,
+ speed1,
+ speed2);
}
- ret = save - len;
-
out:
up_read(&com->lc_sem);
- return ret;
+ return rc;
}
static int lfsck_layout_master_double_scan(const struct lu_env *env,
int rc;
ENTRY;
- if (unlikely(lo->ll_status != LS_SCANNING_PHASE2))
+ if (unlikely(lo->ll_status != LS_SCANNING_PHASE2)) {
+ lfsck_rbtree_cleanup(env, com);
+ lfsck_layout_slave_notify_master(env, com, LE_PHASE2_DONE, 0);
RETURN(0);
+ }
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave phase2 scan start\n",
+ lfsck_lfsck2name(lfsck));
atomic_inc(&lfsck->li_double_scan_count);
done:
rc = lfsck_layout_double_scan_result(env, com, rc);
+ lfsck_rbtree_cleanup(env, com);
+ lfsck_layout_slave_notify_master(env, com, LE_PHASE2_DONE, rc);
if (atomic_dec_and_test(&lfsck->li_double_scan_count))
wake_up_all(&lfsck->li_thread.t_ctl_waitq);
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave phase2 scan finished, "
+ "status %d: rc = %d\n",
+ lfsck_lfsck2name(lfsck), lo->ll_status, rc);
+
return rc;
}
ltd_layout_list) {
list_del_init(<d->ltd_layout_list);
}
+ spin_unlock(<ds->ltd_lock);
+
+ ltds = &lfsck->li_mdt_descs;
+ spin_lock(<ds->ltd_lock);
list_for_each_entry_safe(ltd, next, &llmd->llmd_mdt_phase1_list,
ltd_layout_phase_list) {
list_del_init(<d->ltd_layout_phase_list);
LASSERT(llsd != NULL);
- com->lc_data = NULL;
-
list_for_each_entry_safe(lls, next, &llsd->llsd_seq_list,
lls_list) {
list_del_init(&lls->lls_list);
OBD_FREE_PTR(llst);
}
+ lfsck_rbtree_cleanup(env, com);
+ com->lc_data = NULL;
OBD_FREE_PTR(llsd);
}
&lwi);
}
+static void lfsck_layout_slave_quit(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ lfsck_rbtree_cleanup(env, com);
+}
+
static int lfsck_layout_master_in_notify(const struct lu_env *env,
struct lfsck_component *com,
struct lfsck_request *lr)
struct lfsck_layout_master_data *llmd = com->lc_data;
struct lfsck_tgt_descs *ltds;
struct lfsck_tgt_desc *ltd;
+ 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);
+ }
+
+ CDEBUG(D_LFSCK, "%s: layout LFSCK master handle notify %u "
+ "from %s %x, status %d\n", lfsck_lfsck2name(lfsck),
+ lr->lr_event, (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ lr->lr_index, lr->lr_status);
+
if (lr->lr_event != LE_PHASE1_DONE &&
lr->lr_event != LE_PHASE2_DONE &&
- lr->lr_event != LE_STOP)
+ lr->lr_event != LE_PEER_EXIT)
RETURN(-EINVAL);
if (lr->lr_flags & LEF_FROM_OST)
if (ltd == NULL) {
spin_unlock(<ds->ltd_lock);
- RETURN(-ENODEV);
+ RETURN(-ENXIO);
}
list_del_init(<d->ltd_layout_phase_list);
ltd->ltd_layout_done = 1;
list_del_init(<d->ltd_layout_list);
lo->ll_flags |= LF_INCOMPLETE;
+ fail = true;
break;
}
ltd->ltd_layout_done = 1;
list_del_init(<d->ltd_layout_list);
break;
- case LE_STOP:
+ case LE_PEER_EXIT:
+ fail = true;
ltd->ltd_layout_done = 1;
list_del_init(<d->ltd_layout_list);
- if (!(lr->lr_flags & LEF_FORCE_STOP))
+ if (!(lfsck->li_bookmark_ram.lb_param & LPF_FAILOUT))
lo->ll_flags |= LF_INCOMPLETE;
break;
default:
}
spin_unlock(<ds->ltd_lock);
- if (lr->lr_flags & LEF_FORCE_STOP) {
+ if (fail && lfsck->li_bookmark_ram.lb_param & LPF_FAILOUT) {
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;
+ stop->ls_flags = lr->lr_param & ~LPF_BROADCAST;
lfsck_stop(env, lfsck->li_bottom, stop);
} else if (lfsck_layout_master_to_orphan(llmd)) {
wake_up_all(&llmd->llmd_thread.t_ctl_waitq);
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_PHASE2_DONE &&
- lr->lr_event != LE_STOP)
+ 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);
+
+ lr->lr_status = LPVS_INCONSISTENT_TOFIX;
+ rc = lfsck_layout_slave_repair_pfid(env, com, lr);
+
+ RETURN(rc);
+ }
+ case LE_PHASE2_DONE:
+ case LE_PEER_EXIT:
+ CDEBUG(D_LFSCK, "%s: layout LFSCK slave handle notify %u "
+ "from MDT %x, status %d\n", lfsck_lfsck2name(lfsck),
+ lr->lr_event, lr->lr_index, lr->lr_status);
+ 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)) {
- switch (lr->lr_event) {
- case LE_PHASE2_DONE:
- wake_up_all(&lfsck->li_thread.t_ctl_waitq);
- break;
- case LE_STOP: {
- struct lfsck_stop *stop = &lfsck_env_info(env)->lti_stop;
+ if (list_empty(&llsd->llsd_master_list))
+ wake_up_all(&lfsck->li_thread.t_ctl_waitq);
- memset(stop, 0, sizeof(*stop));
- stop->ls_status = lr->lr_status;
- stop->ls_flags = lr->lr_param;
- lfsck_stop(env, lfsck->li_bottom, stop);
- break;
- }
- default:
- break;
- }
+ if (lr->lr_event == LE_PEER_EXIT &&
+ lfsck->li_bookmark_ram.lb_param & LPF_FAILOUT) {
+ 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;
+ lfsck_stop(env, lfsck->li_bottom, stop);
}
RETURN(0);
struct lfsck_instance *lfsck = com->lc_lfsck;
int rc;
- LASSERT(list_empty(<d->ltd_layout_list));
- LASSERT(list_empty(<d->ltd_layout_phase_list));
+ spin_lock(<ds->ltd_lock);
+ if (list_empty(<d->ltd_layout_list)) {
+ LASSERT(list_empty(<d->ltd_layout_phase_list));
+ spin_unlock(<ds->ltd_lock);
+
+ return 0;
+ }
+
+ list_del_init(<d->ltd_layout_phase_list);
+ list_del_init(<d->ltd_layout_list);
+ spin_unlock(<ds->ltd_lock);
memset(lr, 0, sizeof(*lr));
lr->lr_index = lfsck_dev_idx(lfsck->li_bottom);
- lr->lr_event = LE_STOP;
- lr->lr_active = LT_LAYOUT;
- if (ltds == &lfsck->li_ost_descs) {
+ lr->lr_event = LE_PEER_EXIT;
+ lr->lr_active = LFSCK_TYPE_LAYOUT;
+ lr->lr_status = LS_CO_PAUSED;
+ if (ltds == &lfsck->li_ost_descs)
lr->lr_flags = LEF_TO_OST;
- } else {
- if (ltd->ltd_index == lfsck_dev_idx(lfsck->li_bottom))
- return 0;
-
- lr->lr_flags = 0;
- }
- lr->lr_status = LS_CO_STOPPED;
laia->laia_com = com;
laia->laia_ltds = ltds;
+ atomic_inc(<d->ltd_ref);
laia->laia_ltd = ltd;
laia->laia_lr = lr;
+ laia->laia_shared = 0;
rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
lfsck_layout_master_async_interpret,
laia, LFSCK_NOTIFY);
- if (rc != 0)
- CERROR("%s: Fail to notify %s %x for co-stop: rc = %d\n",
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: layout LFSCK fail to notify %s %x "
+ "for co-stop: rc = %d\n",
lfsck_lfsck2name(lfsck),
(lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
ltd->ltd_index, rc);
+ lfsck_tgt_put(ltd);
+ }
return rc;
}
int rc = 0;
ENTRY;
- if (!lsp->lsp_index_valid || start == NULL ||
- !(start->ls_flags & LPF_ALL_MDT))
- RETURN(-EALREADY);
+ if (start == NULL || !(start->ls_flags & LPF_ORPHAN))
+ RETURN(0);
+
+ if (!lsp->lsp_index_valid)
+ RETURN(-EINVAL);
+
+ /* If someone is running the LFSCK without orphan handling,
+ * it will not maintain the object accessing rbtree. So we
+ * cannot join it for orphan handling. */
+ if (!llsd->llsd_rbtree_valid)
+ RETURN(-EBUSY);
spin_unlock(&lfsck->li_lock);
rc = lfsck_layout_llst_add(llsd, lsp->lsp_index);
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);
.lfsck_exec_oit = lfsck_layout_master_exec_oit,
.lfsck_exec_dir = lfsck_layout_exec_dir,
.lfsck_post = lfsck_layout_master_post,
+ .lfsck_interpret = lfsck_layout_master_async_interpret,
.lfsck_dump = lfsck_layout_dump,
.lfsck_double_scan = lfsck_layout_master_double_scan,
.lfsck_data_release = lfsck_layout_master_data_release,
.lfsck_dump = lfsck_layout_dump,
.lfsck_double_scan = lfsck_layout_slave_double_scan,
.lfsck_data_release = lfsck_layout_slave_data_release,
+ .lfsck_quit = lfsck_layout_slave_quit,
.lfsck_in_notify = lfsck_layout_slave_in_notify,
.lfsck_query = lfsck_layout_query,
.lfsck_join = lfsck_layout_slave_join,
init_rwsem(&com->lc_sem);
atomic_set(&com->lc_ref, 1);
com->lc_lfsck = lfsck;
- com->lc_type = LT_LAYOUT;
+ com->lc_type = LFSCK_TYPE_LAYOUT;
if (lfsck->li_master) {
struct lfsck_layout_master_data *llmd;
INIT_LIST_HEAD(&llsd->llsd_seq_list);
INIT_LIST_HEAD(&llsd->llsd_master_list);
spin_lock_init(&llsd->llsd_lock);
+ llsd->llsd_rb_root = RB_ROOT;
+ rwlock_init(&llsd->llsd_rb_lock);
com->lc_data = llsd;
}
com->lc_file_size = sizeof(*lo);
spin_unlock(&lfsck->li_lock);
break;
default:
- CERROR("%s: unknown lfsck_layout status: rc = %u\n",
+ CERROR("%s: unknown lfsck_layout status %d\n",
lfsck_lfsck2name(lfsck), lo->ll_status);
/* fall through */
case LS_SCANNING_PHASE1:
if (root != NULL && !IS_ERR(root))
lu_object_put(env, &root->do_lu);
- if (rc != 0)
+ if (rc != 0) {
lfsck_component_cleanup(env, com);
+ CERROR("%s: fail to init layout LFSCK component: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+ }
+
+ 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);
+
+ CDEBUG(D_LFSCK, "destroy orphan OST-object "DFID": rc = %d\n",
+ PFID(lfsck_dto2fid(obj)), rc);
+
+ 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, LFSCK_TYPE_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);
+
+ CDEBUG(D_LFSCK, "%s: init the orphan iteration: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+
+ 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) {
+ CDEBUG(D_LFSCK, "%s: fini the orphan iteration\n",
+ lfsck_lfsck2name(com->lc_lfsck));
+
+ 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) == 0 ||
+ lfsck_is_dead_obj(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) {
+ CDEBUG(D_LFSCK, "%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