#include <lustre/lustre_idl.h>
#include <lustre_fid.h>
+#include <obd_support.h>
#include "mdd_internal.h"
+#include "mdd_lfsck.h"
+
+#define HALF_SEC (CFS_HZ >> 1)
+#define LFSCK_CHECKPOINT_INTERVAL 60
+#define MDS_DIR_DUMMY_START 0xffffffffffffffffULL
+
+const char lfsck_bookmark_name[] = "lfsck_bookmark";
+
+/* misc functions */
+
+static inline struct mdd_device *mdd_lfsck2mdd(struct md_lfsck *lfsck)
+{
+ return container_of0(lfsck, struct mdd_device, mdd_lfsck);
+}
static inline char *mdd_lfsck2name(struct md_lfsck *lfsck)
{
- struct mdd_device *mdd;
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
- mdd = container_of0(lfsck, struct mdd_device, mdd_lfsck);
return mdd2obd_dev(mdd)->obd_name;
}
-void mdd_lfsck_set_speed(struct md_lfsck *lfsck, __u32 limit)
+static inline void mdd_lfsck_component_put(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ if (atomic_dec_and_test(&com->lc_ref)) {
+ if (com->lc_obj != NULL)
+ lu_object_put(env, &com->lc_obj->do_lu);
+ if (com->lc_file_ram != NULL)
+ OBD_FREE(com->lc_file_ram, com->lc_file_size);
+ if (com->lc_file_disk != NULL)
+ OBD_FREE(com->lc_file_disk, com->lc_file_size);
+ OBD_FREE_PTR(com);
+ }
+}
+
+static inline struct lfsck_component *
+__mdd_lfsck_component_find(struct md_lfsck *lfsck, __u16 type, cfs_list_t *list)
{
+ struct lfsck_component *com;
+
+ cfs_list_for_each_entry(com, list, lc_link) {
+ if (com->lc_type == type)
+ return com;
+ }
+ return NULL;
+}
+
+static void mdd_lfsck_component_cleanup(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ if (!cfs_list_empty(&com->lc_link))
+ cfs_list_del_init(&com->lc_link);
+ if (!cfs_list_empty(&com->lc_link_dir))
+ cfs_list_del_init(&com->lc_link_dir);
+
+ mdd_lfsck_component_put(env, com);
+}
+
+static void mdd_lfsck_pos_fill(const struct lu_env *env, struct md_lfsck *lfsck,
+ struct lfsck_position *pos, bool oit_processed,
+ bool dir_processed)
+{
+ const struct dt_it_ops *iops = &lfsck->ml_obj_oit->do_index_ops->dio_it;
+
spin_lock(&lfsck->ml_lock);
- lfsck->ml_speed_limit = limit;
+ if (unlikely(lfsck->ml_di_oit == NULL)) {
+ spin_unlock(&lfsck->ml_lock);
+ memset(pos, 0, sizeof(*pos));
+ return;
+ }
+
+ pos->lp_oit_cookie = iops->store(env, lfsck->ml_di_oit);
+
+ LASSERT(pos->lp_oit_cookie > 0);
+
+ if (!oit_processed)
+ pos->lp_oit_cookie--;
+
+ if (lfsck->ml_di_dir != NULL) {
+ struct dt_object *dto = lfsck->ml_obj_dir;
+
+ pos->lp_dir_parent = *lu_object_fid(&dto->do_lu);
+ pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
+ lfsck->ml_di_dir);
+
+ LASSERT(pos->lp_dir_cookie != MDS_DIR_DUMMY_START);
+
+ if (pos->lp_dir_cookie == MDS_DIR_END_OFF)
+ LASSERT(dir_processed);
+
+ /* For the dir which just to be processed,
+ * lp_dir_cookie will become MDS_DIR_DUMMY_START,
+ * which can be correctly handled by mdd_lfsck_prep. */
+ if (!dir_processed)
+ pos->lp_dir_cookie--;
+ } else {
+ fid_zero(&pos->lp_dir_parent);
+ pos->lp_dir_cookie = 0;
+ }
+ spin_unlock(&lfsck->ml_lock);
+}
+
+static inline int mdd_lfsck_pos_is_zero(const struct lfsck_position *pos)
+{
+ return pos->lp_oit_cookie == 0 && fid_is_zero(&pos->lp_dir_parent);
+}
+
+static inline int mdd_lfsck_pos_is_eq(const struct lfsck_position *pos1,
+ const struct lfsck_position *pos2)
+{
+ if (pos1->lp_oit_cookie < pos2->lp_oit_cookie)
+ return -1;
+
+ if (pos1->lp_oit_cookie > pos2->lp_oit_cookie)
+ return 1;
+
+ if (fid_is_zero(&pos1->lp_dir_parent) &&
+ !fid_is_zero(&pos2->lp_dir_parent))
+ return -1;
+
+ if (!fid_is_zero(&pos1->lp_dir_parent) &&
+ fid_is_zero(&pos2->lp_dir_parent))
+ return 1;
+
+ if (fid_is_zero(&pos1->lp_dir_parent) &&
+ fid_is_zero(&pos2->lp_dir_parent))
+ return 0;
+
+ LASSERT(lu_fid_eq(&pos1->lp_dir_parent, &pos2->lp_dir_parent));
+
+ if (pos1->lp_dir_cookie < pos2->lp_dir_cookie)
+ return -1;
+
+ if (pos1->lp_dir_cookie > pos2->lp_dir_cookie)
+ return 1;
+
+ return 0;
+}
+
+static void mdd_lfsck_close_dir(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct dt_object *dir_obj = lfsck->ml_obj_dir;
+ const struct dt_it_ops *dir_iops = &dir_obj->do_index_ops->dio_it;
+ struct dt_it *dir_di = lfsck->ml_di_dir;
+
+ spin_lock(&lfsck->ml_lock);
+ lfsck->ml_di_dir = NULL;
+ spin_unlock(&lfsck->ml_lock);
+
+ dir_iops->put(env, dir_di);
+ dir_iops->fini(env, dir_di);
+ lfsck->ml_obj_dir = NULL;
+ lu_object_put(env, &dir_obj->do_lu);
+}
+
+static void __mdd_lfsck_set_speed(struct md_lfsck *lfsck, __u32 limit)
+{
+ lfsck->ml_bookmark_ram.lb_speed_limit = limit;
if (limit != LFSCK_SPEED_NO_LIMIT) {
if (limit > CFS_HZ) {
lfsck->ml_sleep_rate = limit / CFS_HZ;
lfsck->ml_sleep_jif = 0;
lfsck->ml_sleep_rate = 0;
}
- spin_unlock(&lfsck->ml_lock);
}
static void mdd_lfsck_control_speed(struct md_lfsck *lfsck)
}
}
+/* lfsck_bookmark file ops */
+
+static void inline mdd_lfsck_bookmark_to_cpu(struct lfsck_bookmark *des,
+ struct lfsck_bookmark *src)
+{
+ des->lb_magic = le32_to_cpu(src->lb_magic);
+ des->lb_version = le16_to_cpu(src->lb_version);
+ des->lb_param = le16_to_cpu(src->lb_param);
+ des->lb_speed_limit = le32_to_cpu(src->lb_speed_limit);
+}
+
+static void inline mdd_lfsck_bookmark_to_le(struct lfsck_bookmark *des,
+ struct lfsck_bookmark *src)
+{
+ des->lb_magic = cpu_to_le32(src->lb_magic);
+ des->lb_version = cpu_to_le16(src->lb_version);
+ des->lb_param = cpu_to_le16(src->lb_param);
+ des->lb_speed_limit = cpu_to_le32(src->lb_speed_limit);
+}
+
+static int mdd_lfsck_bookmark_load(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ loff_t pos = 0;
+ int len = sizeof(struct lfsck_bookmark);
+ int rc;
+
+ rc = dt_record_read(env, lfsck->ml_bookmark_obj,
+ mdd_buf_get(env, &lfsck->ml_bookmark_disk, len),
+ &pos);
+ if (rc == 0) {
+ struct lfsck_bookmark *bm = &lfsck->ml_bookmark_ram;
+
+ mdd_lfsck_bookmark_to_cpu(bm, &lfsck->ml_bookmark_disk);
+ if (bm->lb_magic != LFSCK_BOOKMARK_MAGIC) {
+ CWARN("%.16s: invalid lfsck_bookmark magic "
+ "0x%x != 0x%x\n", mdd_lfsck2name(lfsck),
+ bm->lb_magic, LFSCK_BOOKMARK_MAGIC);
+ /* Process it as new lfsck_bookmark. */
+ rc = -ENODATA;
+ }
+ } else {
+ if (rc == -EFAULT && pos == 0)
+ /* return -ENODATA for empty lfsck_bookmark. */
+ rc = -ENODATA;
+ else
+ CERROR("%.16s: fail to load lfsck_bookmark, "
+ "expected = %d, rc = %d\n",
+ mdd_lfsck2name(lfsck), len, rc);
+ }
+ return rc;
+}
+
+static int mdd_lfsck_bookmark_store(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct thandle *handle;
+ struct dt_object *obj = lfsck->ml_bookmark_obj;
+ loff_t pos = 0;
+ int len = sizeof(struct lfsck_bookmark);
+ int rc;
+ ENTRY;
+
+ mdd_lfsck_bookmark_to_le(&lfsck->ml_bookmark_disk,
+ &lfsck->ml_bookmark_ram);
+ handle = dt_trans_create(env, mdd->mdd_bottom);
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ CERROR("%.16s: fail to create trans for storing "
+ "lfsck_bookmark: %d\n,", mdd_lfsck2name(lfsck), rc);
+ RETURN(rc);
+ }
+
+ rc = dt_declare_record_write(env, obj, len, 0, handle);
+ if (rc != 0) {
+ CERROR("%.16s: fail to declare trans for storing "
+ "lfsck_bookmark: %d\n,", mdd_lfsck2name(lfsck), rc);
+ GOTO(out, rc);
+ }
+
+ rc = dt_trans_start_local(env, mdd->mdd_bottom, handle);
+ if (rc != 0) {
+ CERROR("%.16s: fail to start trans for storing "
+ "lfsck_bookmark: %d\n,", mdd_lfsck2name(lfsck), rc);
+ GOTO(out, rc);
+ }
+
+ rc = dt_record_write(env, obj,
+ mdd_buf_get(env, &lfsck->ml_bookmark_disk, len),
+ &pos, handle);
+ if (rc != 0)
+ CERROR("%.16s: fail to store lfsck_bookmark, expected = %d, "
+ "rc = %d\n", mdd_lfsck2name(lfsck), len, rc);
+
+ GOTO(out, rc);
+
+out:
+ dt_trans_stop(env, mdd->mdd_bottom, handle);
+ return rc;
+}
+
+static int mdd_lfsck_bookmark_init(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct lfsck_bookmark *mb = &lfsck->ml_bookmark_ram;
+ int rc;
+
+ memset(mb, 0, sizeof(mb));
+ mb->lb_magic = LFSCK_BOOKMARK_MAGIC;
+ mb->lb_version = LFSCK_VERSION_V1;
+ mutex_lock(&lfsck->ml_mutex);
+ rc = mdd_lfsck_bookmark_store(env, lfsck);
+ mutex_unlock(&lfsck->ml_mutex);
+ return rc;
+}
+
+/* helper functions for framework */
+
+static int object_is_client_visible(const struct lu_env *env,
+ struct mdd_device *mdd,
+ struct mdd_object *obj)
+{
+ struct lu_fid *fid = &mdd_env_info(env)->mti_fid;
+ int depth = 0;
+ int rc;
+
+ LASSERT(S_ISDIR(mdd_object_type(obj)));
+
+ while (1) {
+ if (mdd_is_root(mdd, mdo2fid(obj))) {
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ return 1;
+ }
+
+ mdd_read_lock(env, obj, MOR_TGT_CHILD);
+ if (unlikely(mdd_is_dead_obj(obj))) {
+ mdd_read_unlock(env, obj);
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ return 0;
+ }
+
+ rc = dt_xattr_get(env, mdd_object_child(obj),
+ mdd_buf_get(env, NULL, 0), XATTR_NAME_LINK,
+ BYPASS_CAPA);
+ mdd_read_unlock(env, obj);
+ if (rc >= 0) {
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ return 1;
+ }
+
+ if (rc < 0 && rc != -ENODATA) {
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ return rc;
+ }
+
+ rc = mdd_parent_fid(env, obj, fid);
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ if (rc != 0)
+ return rc;
+
+ if (unlikely(lu_fid_eq(fid, &mdd->mdd_local_root_fid)))
+ return 0;
+
+ obj = mdd_object_find(env, mdd, fid);
+ if (obj == NULL)
+ return 0;
+ else if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ /* XXX: need more processing for remote object in the future. */
+ if (!mdd_object_exists(obj) || mdd_object_remote(obj)) {
+ mdd_object_put(env, obj);
+ return 0;
+ }
+
+ depth++;
+ }
+ return 0;
+}
+
+static void mdd_lfsck_unpack_ent(struct lu_dirent *ent)
+{
+ fid_le_to_cpu(&ent->lde_fid, &ent->lde_fid);
+ ent->lde_hash = le64_to_cpu(ent->lde_hash);
+ ent->lde_reclen = le16_to_cpu(ent->lde_reclen);
+ ent->lde_namelen = le16_to_cpu(ent->lde_namelen);
+ ent->lde_attrs = le32_to_cpu(ent->lde_attrs);
+
+ /* Make sure the name is terminated with '0'.
+ * The data (type) after ent::lde_name maybe
+ * broken, but we do not care. */
+ ent->lde_name[ent->lde_namelen] = 0;
+}
+
+/* LFSCK wrap functions */
+
+static void mdd_lfsck_fail(const struct lu_env *env, struct md_lfsck *lfsck,
+ bool oit, bool new_checked)
+{
+ struct lfsck_component *com;
+
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ com->lc_ops->lfsck_fail(env, com, oit, new_checked);
+ }
+}
+
+static int mdd_lfsck_checkpoint(const struct lu_env *env,
+ struct md_lfsck *lfsck, bool oit)
+{
+ struct lfsck_component *com;
+ int rc;
+
+ if (likely(cfs_time_beforeq(cfs_time_current(),
+ lfsck->ml_time_next_checkpoint)))
+ return 0;
+
+ mdd_lfsck_pos_fill(env, lfsck, &lfsck->ml_pos_current, oit, !oit);
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_checkpoint(env, com, false);
+ if (rc != 0)
+ return rc;;
+ }
+
+ lfsck->ml_time_last_checkpoint = cfs_time_current();
+ lfsck->ml_time_next_checkpoint = lfsck->ml_time_last_checkpoint +
+ cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
+ return 0;
+}
+
+static int mdd_lfsck_prep(struct lu_env *env, struct md_lfsck *lfsck)
+{
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct mdd_object *obj = NULL;
+ struct dt_object *dt_obj;
+ struct lfsck_component *com;
+ struct lfsck_component *next;
+ struct lfsck_position *pos = NULL;
+ const struct dt_it_ops *iops =
+ &lfsck->ml_obj_oit->do_index_ops->dio_it;
+ struct dt_it *di;
+ int rc;
+ ENTRY;
+
+ LASSERT(lfsck->ml_obj_dir == NULL);
+ LASSERT(lfsck->ml_di_dir == NULL);
+
+ cfs_list_for_each_entry_safe(com, next, &lfsck->ml_list_scan, lc_link) {
+ com->lc_new_checked = 0;
+ if (lfsck->ml_bookmark_ram.lb_param & LPF_DRYRUN)
+ com->lc_journal = 0;
+
+ rc = com->lc_ops->lfsck_prep(env, com);
+ if (rc != 0)
+ RETURN(rc);
+
+ if ((pos == NULL) ||
+ (!mdd_lfsck_pos_is_zero(&com->lc_pos_start) &&
+ mdd_lfsck_pos_is_eq(pos, &com->lc_pos_start) > 0))
+ pos = &com->lc_pos_start;
+ }
+
+ /* Init otable-based iterator. */
+ if (pos == NULL) {
+ rc = iops->load(env, lfsck->ml_di_oit, 0);
+ GOTO(out, rc = (rc >= 0 ? 0 : rc));
+ }
+
+ rc = iops->load(env, lfsck->ml_di_oit, pos->lp_oit_cookie);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (fid_is_zero(&pos->lp_dir_parent))
+ GOTO(out, rc = 0);
+
+ /* Find the directory for namespace-based traverse. */
+ obj = mdd_object_find(env, mdd, &pos->lp_dir_parent);
+ if (obj == NULL)
+ GOTO(out, rc = 0);
+ else if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ /* XXX: need more processing for remote object in the future. */
+ if (!mdd_object_exists(obj) || mdd_object_remote(obj) ||
+ unlikely(!S_ISDIR(mdd_object_type(obj))))
+ GOTO(out, rc = 0);
+
+ if (unlikely(mdd_is_dead_obj(obj)))
+ GOTO(out, rc = 0);
+
+ dt_obj = mdd_object_child(obj);
+ if (unlikely(!dt_try_as_dir(env, dt_obj)))
+ GOTO(out, rc = -ENOTDIR);
+
+ /* Init the namespace-based directory traverse. */
+ iops = &dt_obj->do_index_ops->dio_it;
+ di = iops->init(env, dt_obj, lfsck->ml_args_dir, BYPASS_CAPA);
+ if (IS_ERR(di))
+ GOTO(out, rc = PTR_ERR(di));
+
+ rc = iops->load(env, di, pos->lp_dir_cookie);
+ if (rc == 0)
+ rc = iops->next(env, di);
+ else if (rc > 0)
+ rc = 0;
+
+ if (rc != 0) {
+ iops->put(env, di);
+ iops->fini(env, di);
+ GOTO(out, rc);
+ }
+
+ lfsck->ml_obj_dir = dt_obj;
+ spin_lock(&lfsck->ml_lock);
+ lfsck->ml_di_dir = di;
+ spin_unlock(&lfsck->ml_lock);
+ obj = NULL;
+
+ GOTO(out, rc = 0);
+
+out:
+ if (obj != NULL)
+ mdd_object_put(env, obj);
+
+ if (rc != 0)
+ return (rc > 0 ? 0 : rc);
+
+ mdd_lfsck_pos_fill(env, lfsck, &lfsck->ml_pos_current, false, false);
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_checkpoint(env, com, true);
+ if (rc != 0)
+ break;
+ }
+
+ lfsck->ml_time_last_checkpoint = cfs_time_current();
+ lfsck->ml_time_next_checkpoint = lfsck->ml_time_last_checkpoint +
+ cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
+ return rc;
+}
+
+static int mdd_lfsck_exec_oit(const struct lu_env *env, struct md_lfsck *lfsck,
+ struct mdd_object *obj)
+{
+ struct lfsck_component *com;
+ struct dt_object *dt_obj;
+ const struct dt_it_ops *iops;
+ struct dt_it *di;
+ int rc;
+ ENTRY;
+
+ LASSERT(lfsck->ml_obj_dir == NULL);
+
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_exec_oit(env, com, obj);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ if (!S_ISDIR(mdd_object_type(obj)) ||
+ cfs_list_empty(&lfsck->ml_list_dir))
+ RETURN(0);
+
+ rc = object_is_client_visible(env, mdd_lfsck2mdd(lfsck), obj);
+ if (rc <= 0)
+ GOTO(out, rc);
+
+ if (unlikely(mdd_is_dead_obj(obj)))
+ GOTO(out, rc = 0);
+
+ dt_obj = mdd_object_child(obj);
+ if (unlikely(!dt_try_as_dir(env, dt_obj)))
+ GOTO(out, rc = -ENOTDIR);
+
+ iops = &dt_obj->do_index_ops->dio_it;
+ di = iops->init(env, dt_obj, lfsck->ml_args_dir, BYPASS_CAPA);
+ if (IS_ERR(di))
+ GOTO(out, rc = PTR_ERR(di));
+
+ rc = iops->load(env, di, 0);
+ if (rc == 0)
+ rc = iops->next(env, di);
+ else if (rc > 0)
+ rc = 0;
+
+ if (rc != 0) {
+ iops->put(env, di);
+ iops->fini(env, di);
+ GOTO(out, rc);
+ }
+
+ mdd_object_get(obj);
+ lfsck->ml_obj_dir = dt_obj;
+ spin_lock(&lfsck->ml_lock);
+ lfsck->ml_di_dir = di;
+ spin_unlock(&lfsck->ml_lock);
+
+ GOTO(out, rc = 0);
+
+out:
+ if (rc < 0)
+ mdd_lfsck_fail(env, lfsck, false, false);
+ return (rc > 0 ? 0 : rc);
+}
+
+static int mdd_lfsck_exec_dir(const struct lu_env *env, struct md_lfsck *lfsck,
+ struct mdd_object *obj, struct lu_dirent *ent)
+{
+ struct lfsck_component *com;
+ int rc;
+
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_exec_dir(env, com, obj, ent);
+ if (rc != 0)
+ return rc;
+ }
+ return 0;
+}
+
+static int mdd_lfsck_post(const struct lu_env *env, struct md_lfsck *lfsck,
+ int result)
+{
+ struct lfsck_component *com;
+ struct lfsck_component *next;
+ int rc;
+
+ mdd_lfsck_pos_fill(env, lfsck, &lfsck->ml_pos_current, true, true);
+ cfs_list_for_each_entry_safe(com, next, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_post(env, com, result);
+ if (rc != 0)
+ return rc;
+ }
+
+ lfsck->ml_time_last_checkpoint = cfs_time_current();
+ lfsck->ml_time_next_checkpoint = lfsck->ml_time_last_checkpoint +
+ cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
+ return result;
+}
+
+static int mdd_lfsck_double_scan(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct lfsck_component *com;
+ struct lfsck_component *next;
+ int rc;
+
+ cfs_list_for_each_entry_safe(com, next, &lfsck->ml_list_double_scan,
+ lc_link) {
+ if (lfsck->ml_bookmark_ram.lb_param & LPF_DRYRUN)
+ com->lc_journal = 0;
+
+ rc = com->lc_ops->lfsck_double_scan(env, com);
+ if (rc != 0)
+ return rc;
+ }
+ return 0;
+}
+
+/* LFSCK engines */
+
+static int mdd_lfsck_dir_engine(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ const struct dt_it_ops *iops =
+ &lfsck->ml_obj_dir->do_index_ops->dio_it;
+ struct dt_it *di = lfsck->ml_di_dir;
+ struct lu_dirent *ent = &info->mti_ent;
+ struct lu_fid *fid = &info->mti_fid;
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ int rc;
+ ENTRY;
+
+ do {
+ struct mdd_object *child;
+
+ lfsck->ml_new_scanned++;
+ rc = iops->rec(env, di, (struct dt_rec *)ent,
+ lfsck->ml_args_dir);
+ if (rc != 0) {
+ mdd_lfsck_fail(env, lfsck, false, true);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+ else
+ goto checkpoint;
+ }
+
+ mdd_lfsck_unpack_ent(ent);
+ if (ent->lde_attrs & LUDA_IGNORE)
+ goto checkpoint;
+
+ *fid = ent->lde_fid;
+ child = mdd_object_find(env, mdd, fid);
+ if (child == NULL) {
+ goto checkpoint;
+ } else if (IS_ERR(child)) {
+ mdd_lfsck_fail(env, lfsck, false, true);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(PTR_ERR(child));
+ else
+ goto checkpoint;
+ }
+
+ /* XXX: need more processing for remote object in the future. */
+ if (mdd_object_exists(child) && !mdd_object_remote(child))
+ rc = mdd_lfsck_exec_dir(env, lfsck, child, ent);
+ mdd_object_put(env, child);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+
+checkpoint:
+ rc = mdd_lfsck_checkpoint(env, lfsck, false);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+
+ /* Rate control. */
+ mdd_lfsck_control_speed(lfsck);
+ if (unlikely(!thread_is_running(thread)))
+ RETURN(0);
+
+ rc = iops->next(env, di);
+ } while (rc == 0);
+
+ if (rc > 0 && !lfsck->ml_oit_over)
+ mdd_lfsck_close_dir(env, lfsck);
+
+ RETURN(rc);
+}
+
+static int mdd_lfsck_oit_engine(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ const struct dt_it_ops *iops =
+ &lfsck->ml_obj_oit->do_index_ops->dio_it;
+ struct dt_it *di = lfsck->ml_di_oit;
+ struct lu_fid *fid = &info->mti_fid;
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ int rc;
+ ENTRY;
+
+ do {
+ struct mdd_object *target;
+
+ if (lfsck->ml_di_dir != NULL) {
+ rc = mdd_lfsck_dir_engine(env, lfsck);
+ if (rc <= 0)
+ RETURN(rc);
+ }
+
+ if (unlikely(lfsck->ml_oit_over))
+ RETURN(1);
+
+ lfsck->ml_new_scanned++;
+ rc = iops->rec(env, di, (struct dt_rec *)fid, 0);
+ if (rc != 0) {
+ mdd_lfsck_fail(env, lfsck, true, true);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+ else
+ goto checkpoint;
+ }
+
+ target = mdd_object_find(env, mdd, fid);
+ if (target == NULL) {
+ goto checkpoint;
+ } else if (IS_ERR(target)) {
+ mdd_lfsck_fail(env, lfsck, true, true);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(PTR_ERR(target));
+ else
+ goto checkpoint;
+ }
+
+ /* XXX: In fact, low layer otable-based iteration should not
+ * return agent object. But before LU-2646 resolved, we
+ * need more processing for agent object. */
+ if (mdd_object_exists(target) && !mdd_object_remote(target))
+ rc = mdd_lfsck_exec_oit(env, lfsck, target);
+ mdd_object_put(env, target);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+
+checkpoint:
+ rc = mdd_lfsck_checkpoint(env, lfsck, true);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+
+ /* Rate control. */
+ mdd_lfsck_control_speed(lfsck);
+
+ rc = iops->next(env, di);
+ if (rc > 0)
+ lfsck->ml_oit_over = 1;
+
+ if (unlikely(!thread_is_running(thread)))
+ RETURN(0);
+ } while (rc == 0 || lfsck->ml_di_dir != NULL);
+
+ RETURN(rc);
+}
+
static int mdd_lfsck_main(void *args)
{
struct lu_env env;
- struct md_lfsck *lfsck = (struct md_lfsck *)args;
- struct ptlrpc_thread *thread = &lfsck->ml_thread;
- struct dt_object *obj = lfsck->ml_it_obj;
- const struct dt_it_ops *iops = &obj->do_index_ops->dio_it;
- struct dt_it *di;
- struct lu_fid *fid;
+ struct md_lfsck *lfsck = (struct md_lfsck *)args;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ struct dt_object *oit_obj = lfsck->ml_obj_oit;
+ const struct dt_it_ops *oit_iops = &oit_obj->do_index_ops->dio_it;
+ struct dt_it *oit_di;
int rc;
ENTRY;
GOTO(noenv, rc);
}
- di = iops->init(&env, obj, lfsck->ml_args, BYPASS_CAPA);
- if (IS_ERR(di)) {
- rc = PTR_ERR(di);
+ oit_di = oit_iops->init(&env, oit_obj, lfsck->ml_args_oit, BYPASS_CAPA);
+ if (IS_ERR(oit_di)) {
+ rc = PTR_ERR(oit_di);
CERROR("%s: LFSCK, fail to init iteration, rc = %d\n",
mdd_lfsck2name(lfsck), rc);
GOTO(fini_env, rc);
}
- CDEBUG(D_LFSCK, "LFSCK: flags = 0x%x, pid = %d\n",
- lfsck->ml_args, cfs_curproc_pid());
+ spin_lock(&lfsck->ml_lock);
+ lfsck->ml_di_oit = oit_di;
+ spin_unlock(&lfsck->ml_lock);
+ rc = mdd_lfsck_prep(&env, lfsck);
+ if (rc != 0)
+ GOTO(fini_oit, rc);
+
+ CDEBUG(D_LFSCK, "LFSCK entry: oit_flags = 0x%x, dir_flags = 0x%x, "
+ "oit_cookie = "LPU64", dir_cookie = "LPU64", parent = "DFID
+ ", pid = %d\n", lfsck->ml_args_oit, lfsck->ml_args_dir,
+ lfsck->ml_pos_current.lp_oit_cookie,
+ lfsck->ml_pos_current.lp_dir_cookie,
+ PFID(&lfsck->ml_pos_current.lp_dir_parent),
+ cfs_curproc_pid());
spin_lock(&lfsck->ml_lock);
thread_set_flags(thread, SVC_RUNNING);
spin_unlock(&lfsck->ml_lock);
cfs_waitq_broadcast(&thread->t_ctl_waitq);
- /* The call iops->load() will unplug low layer iteration. */
- rc = iops->load(&env, di, 0);
- if (rc != 0)
- GOTO(out, rc);
-
- CDEBUG(D_LFSCK, "LFSCK: iteration start: pos = %s\n",
- (char *)iops->key(&env, di));
+ if (!cfs_list_empty(&lfsck->ml_list_scan) ||
+ cfs_list_empty(&lfsck->ml_list_double_scan))
+ rc = mdd_lfsck_oit_engine(&env, lfsck);
+ else
+ rc = 1;
- lfsck->ml_new_scanned = 0;
- fid = &mdd_env_info(&env)->mti_fid;
- while (rc == 0) {
- iops->rec(&env, di, (struct dt_rec *)fid, 0);
+ CDEBUG(D_LFSCK, "LFSCK exit: oit_flags = 0x%x, dir_flags = 0x%x, "
+ "oit_cookie = "LPU64", dir_cookie = "LPU64", parent = "DFID
+ ", pid = %d, rc = %d\n", lfsck->ml_args_oit, lfsck->ml_args_dir,
+ lfsck->ml_pos_current.lp_oit_cookie,
+ lfsck->ml_pos_current.lp_dir_cookie,
+ PFID(&lfsck->ml_pos_current.lp_dir_parent),
+ cfs_curproc_pid(), rc);
- /* XXX: here, perform LFSCK when some LFSCK component(s)
- * introduced in the future. */
- lfsck->ml_new_scanned++;
+ if (lfsck->ml_paused && cfs_list_empty(&lfsck->ml_list_scan))
+ oit_iops->put(&env, oit_di);
- /* XXX: here, make checkpoint when some LFSCK component(s)
- * introduced in the future. */
+ rc = mdd_lfsck_post(&env, lfsck, rc);
+ if (lfsck->ml_di_dir != NULL)
+ mdd_lfsck_close_dir(&env, lfsck);
- /* Rate control. */
- mdd_lfsck_control_speed(lfsck);
- if (unlikely(!thread_is_running(thread)))
- GOTO(out, rc = 0);
+fini_oit:
+ spin_lock(&lfsck->ml_lock);
+ lfsck->ml_di_oit = NULL;
+ spin_unlock(&lfsck->ml_lock);
- rc = iops->next(&env, di);
+ oit_iops->fini(&env, oit_di);
+ if (rc == 1) {
+ if (!cfs_list_empty(&lfsck->ml_list_double_scan))
+ rc = mdd_lfsck_double_scan(&env, lfsck);
+ else
+ rc = 0;
}
- GOTO(out, rc);
-
-out:
- if (lfsck->ml_paused) {
- /* XXX: It is hack here: if the lfsck is still running when MDS
- * umounts, it should be restarted automatically after MDS
- * remounts up.
- *
- * To support that, we need to record the lfsck status in
- * the lfsck on-disk bookmark file. But now, there is not
- * lfsck component under the lfsck framework. To avoid to
- * introduce unnecessary bookmark incompatibility issues,
- * we write nothing to the lfsck bookmark file now.
- *
- * Instead, we will reuse dt_it_ops::put() method to notify
- * low layer iterator to process such case.
- *
- * It is just temporary solution, and will be replaced when
- * some lfsck component is introduced in the future. */
- iops->put(&env, di);
- CDEBUG(D_LFSCK, "LFSCK: iteration pasued: pos = %s, rc = %d\n",
- (char *)iops->key(&env, di), rc);
- } else {
- CDEBUG(D_LFSCK, "LFSCK: iteration stop: pos = %s, rc = %d\n",
- (char *)iops->key(&env, di), rc);
- }
- iops->fini(&env, di);
+ /* XXX: Purge the pinned objects in the future. */
fini_env:
lu_env_fini(&env);
return rc;
}
+/* external interfaces */
+
+int mdd_lfsck_set_speed(const struct lu_env *env, struct md_lfsck *lfsck,
+ __u32 limit)
+{
+ int rc;
+
+ mutex_lock(&lfsck->ml_mutex);
+ __mdd_lfsck_set_speed(lfsck, limit);
+ rc = mdd_lfsck_bookmark_store(env, lfsck);
+ mutex_unlock(&lfsck->ml_mutex);
+ return rc;
+}
+
int mdd_lfsck_start(const struct lu_env *env, struct md_lfsck *lfsck,
struct lfsck_start *start)
{
- struct ptlrpc_thread *thread = &lfsck->ml_thread;
- struct l_wait_info lwi = { 0 };
- int rc = 0;
- __u16 valid = 0;
- __u16 flags = 0;
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ struct lfsck_component *com;
+ struct l_wait_info lwi = { 0 };
+ bool dirty = false;
+ int rc = 0;
+ __u16 valid = 0;
+ __u16 flags = 0;
ENTRY;
- if (lfsck->ml_it_obj == NULL)
+ if (lfsck->ml_obj_oit == NULL)
RETURN(-ENOTSUPP);
+ /* start == NULL means auto trigger paused LFSCK. */
+ if (start == NULL && cfs_list_empty(&lfsck->ml_list_scan))
+ RETURN(0);
+
mutex_lock(&lfsck->ml_mutex);
spin_lock(&lfsck->ml_lock);
- if (thread_is_running(thread)) {
+ if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
spin_unlock(&lfsck->ml_lock);
mutex_unlock(&lfsck->ml_mutex);
RETURN(-EALREADY);
}
spin_unlock(&lfsck->ml_lock);
- if (start->ls_valid & LSV_SPEED_LIMIT)
- mdd_lfsck_set_speed(lfsck, start->ls_speed_limit);
+
+ lfsck->ml_paused = 0;
+ lfsck->ml_oit_over = 0;
+ lfsck->ml_drop_dryrun = 0;
+ lfsck->ml_new_scanned = 0;
+
+ /* For auto trigger. */
+ if (start == NULL)
+ goto trigger;
+
+ start->ls_version = bk->lb_version;
+ if (start->ls_valid & LSV_SPEED_LIMIT) {
+ __mdd_lfsck_set_speed(lfsck, start->ls_speed_limit);
+ dirty = true;
+ }
if (start->ls_valid & LSV_ERROR_HANDLE) {
valid |= DOIV_ERROR_HANDLE;
if (start->ls_flags & LPF_FAILOUT)
flags |= DOIF_FAILOUT;
+
+ if ((start->ls_flags & LPF_FAILOUT) &&
+ !(bk->lb_param & LPF_FAILOUT)) {
+ bk->lb_param |= LPF_FAILOUT;
+ dirty = true;
+ } else if (!(start->ls_flags & LPF_FAILOUT) &&
+ (bk->lb_param & LPF_FAILOUT)) {
+ bk->lb_param &= ~LPF_FAILOUT;
+ dirty = true;
+ }
+ }
+
+ if (start->ls_valid & LSV_DRYRUN) {
+ if ((start->ls_flags & LPF_DRYRUN) &&
+ !(bk->lb_param & LPF_DRYRUN)) {
+ bk->lb_param |= LPF_DRYRUN;
+ dirty = true;
+ } else if (!(start->ls_flags & LPF_DRYRUN) &&
+ (bk->lb_param & LPF_DRYRUN)) {
+ bk->lb_param &= ~LPF_DRYRUN;
+ lfsck->ml_drop_dryrun = 1;
+ dirty = true;
+ }
}
- /* XXX: 1. low layer does not care 'dryrun'.
- * 2. will process 'ls_active' when introduces LFSCK for layout
- * consistency, DNE consistency, and so on in the future. */
- start->ls_active = 0;
+ if (dirty) {
+ rc = mdd_lfsck_bookmark_store(env, lfsck);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
if (start->ls_flags & LPF_RESET)
flags |= DOIF_RESET;
- if (start->ls_active != 0)
+ if (start->ls_active != 0) {
+ struct lfsck_component *next;
+ __u16 type = 1;
+
+ if (start->ls_active == LFSCK_TYPES_ALL)
+ start->ls_active = LFSCK_TYPES_SUPPORTED;
+
+ if (start->ls_active & ~LFSCK_TYPES_SUPPORTED) {
+ start->ls_active &= ~LFSCK_TYPES_SUPPORTED;
+ GOTO(out, rc = -ENOTSUPP);
+ }
+
+ cfs_list_for_each_entry_safe(com, next,
+ &lfsck->ml_list_scan, lc_link) {
+ if (!(com->lc_type & start->ls_active)) {
+ rc = com->lc_ops->lfsck_post(env, com, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+ }
+
+ while (start->ls_active != 0) {
+ if (type & start->ls_active) {
+ com = __mdd_lfsck_component_find(lfsck, type,
+ &lfsck->ml_list_idle);
+ if (com != NULL) {
+ /* The component status will be updated
+ * when its prep() is called later by
+ * the LFSCK main engine. */
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_add_tail(&com->lc_link,
+ &lfsck->ml_list_scan);
+ }
+ start->ls_active &= ~type;
+ }
+ type <<= 1;
+ }
+ }
+
+ cfs_list_for_each_entry(com, &lfsck->ml_list_scan, lc_link) {
+ start->ls_active |= com->lc_type;
+ if (flags & DOIF_RESET) {
+ rc = com->lc_ops->lfsck_reset(env, com, false);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+ }
+
+trigger:
+ lfsck->ml_args_dir = LUDA_64BITHASH | LUDA_VERIFY;
+ if (bk->lb_param & LPF_DRYRUN)
+ lfsck->ml_args_dir |= LUDA_VERIFY_DRYRUN;
+
+ if (bk->lb_param & LPF_FAILOUT) {
+ valid |= DOIV_ERROR_HANDLE;
+ flags |= DOIF_FAILOUT;
+ }
+
+ if (!cfs_list_empty(&lfsck->ml_list_scan))
flags |= DOIF_OUTUSED;
- lfsck->ml_args = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid;
+ lfsck->ml_args_oit = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid;
thread_set_flags(thread, 0);
rc = cfs_create_thread(mdd_lfsck_main, lfsck, 0);
if (rc < 0)
thread_is_running(thread) ||
thread_is_stopped(thread),
&lwi);
- mutex_unlock(&lfsck->ml_mutex);
- RETURN(rc < 0 ? rc : 0);
+ GOTO(out, rc = 0);
+
+out:
+ mutex_unlock(&lfsck->ml_mutex);
+ return (rc < 0 ? rc : 0);
}
-int mdd_lfsck_stop(const struct lu_env *env, struct md_lfsck *lfsck)
+int mdd_lfsck_stop(const struct lu_env *env, struct md_lfsck *lfsck,
+ bool pause)
{
struct ptlrpc_thread *thread = &lfsck->ml_thread;
struct l_wait_info lwi = { 0 };
RETURN(-EALREADY);
}
+ if (pause)
+ lfsck->ml_paused = 1;
thread_set_flags(thread, SVC_STOPPING);
+ /* The LFSCK thread may be sleeping on low layer wait queue,
+ * wake it up. */
+ if (likely(lfsck->ml_di_oit != NULL))
+ lfsck->ml_obj_oit->do_index_ops->dio_it.put(env,
+ lfsck->ml_di_oit);
spin_unlock(&lfsck->ml_lock);
cfs_waitq_broadcast(&thread->t_ctl_waitq);
RETURN(0);
}
-const char lfsck_bookmark_name[] = "lfsck_bookmark";
-
static const struct lu_fid lfsck_it_fid = { .f_seq = FID_SEQ_LOCAL_FILE,
.f_oid = OTABLE_IT_OID,
.f_ver = 0 };
struct md_lfsck *lfsck = &mdd->mdd_lfsck;
struct dt_object *obj;
int rc;
+ ENTRY;
- memset(lfsck, 0, sizeof(*lfsck));
- lfsck->ml_version = LFSCK_VERSION_V1;
- cfs_waitq_init(&lfsck->ml_thread.t_ctl_waitq);
+ LASSERT(!lfsck->ml_initialized);
+
+ lfsck->ml_initialized = 1;
mutex_init(&lfsck->ml_mutex);
spin_lock_init(&lfsck->ml_lock);
+ CFS_INIT_LIST_HEAD(&lfsck->ml_list_scan);
+ CFS_INIT_LIST_HEAD(&lfsck->ml_list_dir);
+ CFS_INIT_LIST_HEAD(&lfsck->ml_list_double_scan);
+ CFS_INIT_LIST_HEAD(&lfsck->ml_list_idle);
+ cfs_waitq_init(&lfsck->ml_thread.t_ctl_waitq);
- obj = dt_store_open(env, mdd->mdd_child, "", lfsck_bookmark_name,
- &mdd_env_info(env)->mti_fid);
- if (IS_ERR(obj))
- return PTR_ERR(obj);
-
- lfsck->ml_bookmark_obj = obj;
-
- obj = dt_locate(env, mdd->mdd_child, &lfsck_it_fid);
+ obj = dt_locate(env, mdd->mdd_bottom, &lfsck_it_fid);
if (IS_ERR(obj))
- return PTR_ERR(obj);
+ RETURN(PTR_ERR(obj));
+ lfsck->ml_obj_oit = obj;
rc = obj->do_ops->do_index_try(env, obj, &dt_otable_features);
if (rc != 0) {
- lu_object_put(env, &obj->do_lu);
if (rc == -ENOTSUPP)
rc = 0;
- return rc;
+
+ RETURN(rc);
}
- lfsck->ml_it_obj = obj;
+ obj = dt_store_open(env, mdd->mdd_bottom, "", lfsck_bookmark_name,
+ &mdd_env_info(env)->mti_fid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
- return 0;
+ lfsck->ml_bookmark_obj = obj;
+ rc = mdd_lfsck_bookmark_load(env, lfsck);
+ if (rc == -ENODATA)
+ rc = mdd_lfsck_bookmark_init(env, lfsck);
+
+ /* XXX: LFSCK components initialization to be added here. */
+
+ RETURN(rc);
}
void mdd_lfsck_cleanup(const struct lu_env *env, struct mdd_device *mdd)
{
- struct md_lfsck *lfsck = &mdd->mdd_lfsck;
+ struct md_lfsck *lfsck = &mdd->mdd_lfsck;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ struct lfsck_component *com;
- if (lfsck->ml_it_obj != NULL) {
- lfsck->ml_paused = 1;
- mdd_lfsck_stop(env, lfsck);
- lu_object_put(env, &lfsck->ml_it_obj->do_lu);
- lfsck->ml_it_obj = NULL;
+ if (!lfsck->ml_initialized)
+ return;
+
+ LASSERT(thread_is_init(thread) || thread_is_stopped(thread));
+
+ if (lfsck->ml_obj_oit != NULL) {
+ lu_object_put(env, &lfsck->ml_obj_oit->do_lu);
+ lfsck->ml_obj_oit = NULL;
}
+ LASSERT(lfsck->ml_obj_dir == NULL);
+
if (lfsck->ml_bookmark_obj != NULL) {
lu_object_put(env, &lfsck->ml_bookmark_obj->do_lu);
lfsck->ml_bookmark_obj = NULL;
}
+
+ while (!cfs_list_empty(&lfsck->ml_list_scan)) {
+ com = cfs_list_entry(lfsck->ml_list_scan.next,
+ struct lfsck_component,
+ lc_link);
+ mdd_lfsck_component_cleanup(env, com);
+ }
+
+ LASSERT(cfs_list_empty(&lfsck->ml_list_dir));
+
+ while (!cfs_list_empty(&lfsck->ml_list_double_scan)) {
+ com = cfs_list_entry(lfsck->ml_list_double_scan.next,
+ struct lfsck_component,
+ lc_link);
+ mdd_lfsck_component_cleanup(env, com);
+ }
+
+ while (!cfs_list_empty(&lfsck->ml_list_idle)) {
+ com = cfs_list_entry(lfsck->ml_list_idle.next,
+ struct lfsck_component,
+ lc_link);
+ mdd_lfsck_component_cleanup(env, com);
+ }
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff