* GPL HEADER END
*/
/*
- * Copyright (c) 2012 Whamcloud, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* lustre/mdd/mdd_lfsck.c
#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 LFSCK_NAMEENTRY_DEAD 1 /* The object has been unlinked. */
+#define LFSCK_NAMEENTRY_REMOVED 2 /* The entry has been removed. */
+#define LFSCK_NAMEENTRY_RECREATED 3 /* The entry has been recreated. */
+
+const char lfsck_bookmark_name[] = "lfsck_bookmark";
+const char lfsck_namespace_name[] = "lfsck_namespace";
+
+static const char *lfsck_status_names[] = {
+ "init",
+ "scanning-phase1",
+ "scanning-phase2",
+ "completed",
+ "failed",
+ "stopped",
+ "paused",
+ "crashed",
+ NULL
+};
+
+static const char *lfsck_flags_names[] = {
+ "scanned-once",
+ "inconsistent",
+ "upgrade",
+ NULL
+};
+
+static const char *lfsck_param_names[] = {
+ "failout",
+ "dryrun",
+ NULL
+};
+
+/* 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);
+
+ return mdd2obd_dev(mdd)->obd_name;
+}
+
+static inline void mdd_lfsck_component_get(struct lfsck_component *com)
+{
+ atomic_inc(&com->lc_ref);
+}
+
+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 struct lfsck_component *
+mdd_lfsck_component_find(struct md_lfsck *lfsck, __u16 type)
+{
+ struct lfsck_component *com;
+
+ spin_lock(&lfsck->ml_lock);
+ com = __mdd_lfsck_component_find(lfsck, type, &lfsck->ml_list_scan);
+ if (com != NULL)
+ goto unlock;
+
+ com = __mdd_lfsck_component_find(lfsck, type,
+ &lfsck->ml_list_double_scan);
+ if (com != NULL)
+ goto unlock;
+
+ com = __mdd_lfsck_component_find(lfsck, type, &lfsck->ml_list_idle);
+
+unlock:
+ if (com != NULL)
+ mdd_lfsck_component_get(com);
+ spin_unlock(&lfsck->ml_lock);
+ return com;
+}
+
+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 int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
+ const char *prefix)
+{
+ int save = *len;
+ int flag;
+ int rc;
+ int i;
+
+ rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
+ if (rc <= 0)
+ return -ENOSPC;
+
+ *buf += rc;
+ *len -= rc;
+ for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
+ if (flag & bits) {
+ bits &= ~flag;
+ rc = snprintf(*buf, *len, "%s%c", names[i],
+ bits != 0 ? ',' : '\n');
+ if (rc <= 0)
+ return -ENOSPC;
+
+ *buf += rc;
+ *len -= rc;
+ }
+ }
+ return save - *len;
+}
+
+static int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix)
+{
+ int rc;
+
+ if (time != 0)
+ rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
+ cfs_time_current_sec() - time);
+ else
+ rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
+ if (rc <= 0)
+ return -ENOSPC;
+
+ *buf += rc;
+ *len -= rc;
+ return rc;
+}
+
+static int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
+ const char *prefix)
+{
+ int rc;
+
+ if (fid_is_zero(&pos->lp_dir_parent)) {
+ if (pos->lp_oit_cookie == 0)
+ rc = snprintf(*buf, *len, "%s: N/A, N/A, N/A\n",
+ prefix);
+ else
+ rc = snprintf(*buf, *len, "%s: "LPU64", N/A, N/A\n",
+ prefix, pos->lp_oit_cookie);
+ } else {
+ rc = snprintf(*buf, *len, "%s: "LPU64", "DFID", "LPU64"\n",
+ prefix, pos->lp_oit_cookie,
+ PFID(&pos->lp_dir_parent), pos->lp_dir_cookie);
+ }
+ if (rc <= 0)
+ return -ENOSPC;
+
+ *buf += rc;
+ *len -= rc;
+ return rc;
+}
+
+static void mdd_lfsck_pos_fill(const struct lu_env *env, struct md_lfsck *lfsck,
+ struct lfsck_position *pos, bool init)
+{
+ const struct dt_it_ops *iops = &lfsck->ml_obj_oit->do_index_ops->dio_it;
+
+ spin_lock(&lfsck->ml_lock);
+ 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);
+ if (!lfsck->ml_current_oit_processed && !init)
+ pos->lp_oit_cookie--;
+
+ LASSERT(pos->lp_oit_cookie > 0);
+
+ if (lfsck->ml_di_dir != NULL) {
+ struct dt_object *dto = lfsck->ml_obj_dir;
+
+ pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
+ lfsck->ml_di_dir);
+
+ if (pos->lp_dir_cookie >= MDS_DIR_END_OFF) {
+ fid_zero(&pos->lp_dir_parent);
+ pos->lp_dir_cookie = 0;
+ } else {
+ pos->lp_dir_parent = *lu_object_fid(&dto->do_lu);
+ }
+ } else {
+ fid_zero(&pos->lp_dir_parent);
+ pos->lp_dir_cookie = 0;
+ }
+ spin_unlock(&lfsck->ml_lock);
+}
+
+static inline void mdd_lfsck_pos_set_zero(struct lfsck_position *pos)
+{
+ memset(pos, 0, sizeof(*pos));
+}
+
+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 = 1;
+ } else {
+ lfsck->ml_sleep_rate = 1;
+ lfsck->ml_sleep_jif = CFS_HZ / limit;
+ }
+ } else {
+ lfsck->ml_sleep_jif = 0;
+ lfsck->ml_sleep_rate = 0;
+ }
+}
+
+static void mdd_lfsck_control_speed(struct md_lfsck *lfsck)
+{
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ struct l_wait_info lwi;
+
+ if (lfsck->ml_sleep_jif > 0 &&
+ lfsck->ml_new_scanned >= lfsck->ml_sleep_rate) {
+ spin_lock(&lfsck->ml_lock);
+ if (likely(lfsck->ml_sleep_jif > 0 &&
+ lfsck->ml_new_scanned >= lfsck->ml_sleep_rate)) {
+ lwi = LWI_TIMEOUT_INTR(lfsck->ml_sleep_jif, NULL,
+ LWI_ON_SIGNAL_NOOP, NULL);
+ spin_unlock(&lfsck->ml_lock);
+
+ l_wait_event(thread->t_ctl_waitq,
+ !thread_is_running(thread),
+ &lwi);
+ lfsck->ml_new_scanned = 0;
+ } else {
+ spin_unlock(&lfsck->ml_lock);
+ }
+ }
+}
+
+/* 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_V2;
+ mutex_lock(&lfsck->ml_mutex);
+ rc = mdd_lfsck_bookmark_store(env, lfsck);
+ mutex_unlock(&lfsck->ml_mutex);
+ return rc;
+}
+
+/* lfsck_namespace file ops */
+
+static void inline mdd_lfsck_position_to_cpu(struct lfsck_position *des,
+ struct lfsck_position *src)
+{
+ des->lp_oit_cookie = le64_to_cpu(src->lp_oit_cookie);
+ fid_le_to_cpu(&des->lp_dir_parent, &src->lp_dir_parent);
+ des->lp_dir_cookie = le64_to_cpu(src->lp_dir_cookie);
+}
+
+static void inline mdd_lfsck_position_to_le(struct lfsck_position *des,
+ struct lfsck_position *src)
+{
+ des->lp_oit_cookie = cpu_to_le64(src->lp_oit_cookie);
+ fid_cpu_to_le(&des->lp_dir_parent, &src->lp_dir_parent);
+ des->lp_dir_cookie = cpu_to_le64(src->lp_dir_cookie);
+}
+
+static void inline mdd_lfsck_namespace_to_cpu(struct lfsck_namespace *des,
+ struct lfsck_namespace *src)
+{
+ des->ln_magic = le32_to_cpu(src->ln_magic);
+ des->ln_status = le32_to_cpu(src->ln_status);
+ des->ln_flags = le32_to_cpu(src->ln_flags);
+ des->ln_success_count = le32_to_cpu(src->ln_success_count);
+ des->ln_run_time_phase1 = le32_to_cpu(src->ln_run_time_phase1);
+ des->ln_run_time_phase2 = le32_to_cpu(src->ln_run_time_phase2);
+ des->ln_time_last_complete = le64_to_cpu(src->ln_time_last_complete);
+ des->ln_time_latest_start = le64_to_cpu(src->ln_time_latest_start);
+ des->ln_time_last_checkpoint =
+ le64_to_cpu(src->ln_time_last_checkpoint);
+ mdd_lfsck_position_to_cpu(&des->ln_pos_latest_start,
+ &src->ln_pos_latest_start);
+ mdd_lfsck_position_to_cpu(&des->ln_pos_last_checkpoint,
+ &src->ln_pos_last_checkpoint);
+ mdd_lfsck_position_to_cpu(&des->ln_pos_first_inconsistent,
+ &src->ln_pos_first_inconsistent);
+ des->ln_items_checked = le64_to_cpu(src->ln_items_checked);
+ des->ln_items_repaired = le64_to_cpu(src->ln_items_repaired);
+ des->ln_items_failed = le64_to_cpu(src->ln_items_failed);
+ des->ln_dirs_checked = le64_to_cpu(src->ln_dirs_checked);
+ des->ln_mlinked_checked = le64_to_cpu(src->ln_mlinked_checked);
+ des->ln_objs_checked_phase2 = le64_to_cpu(src->ln_objs_checked_phase2);
+ des->ln_objs_repaired_phase2 =
+ le64_to_cpu(src->ln_objs_repaired_phase2);
+ des->ln_objs_failed_phase2 = le64_to_cpu(src->ln_objs_failed_phase2);
+ des->ln_objs_nlink_repaired = le64_to_cpu(src->ln_objs_nlink_repaired);
+ des->ln_objs_lost_found = le64_to_cpu(src->ln_objs_lost_found);
+ fid_le_to_cpu(&des->ln_fid_latest_scanned_phase2,
+ &src->ln_fid_latest_scanned_phase2);
+}
+
+static void inline mdd_lfsck_namespace_to_le(struct lfsck_namespace *des,
+ struct lfsck_namespace *src)
+{
+ des->ln_magic = cpu_to_le32(src->ln_magic);
+ des->ln_status = cpu_to_le32(src->ln_status);
+ des->ln_flags = cpu_to_le32(src->ln_flags);
+ des->ln_success_count = cpu_to_le32(src->ln_success_count);
+ des->ln_run_time_phase1 = cpu_to_le32(src->ln_run_time_phase1);
+ des->ln_run_time_phase2 = cpu_to_le32(src->ln_run_time_phase2);
+ des->ln_time_last_complete = cpu_to_le64(src->ln_time_last_complete);
+ des->ln_time_latest_start = cpu_to_le64(src->ln_time_latest_start);
+ des->ln_time_last_checkpoint =
+ cpu_to_le64(src->ln_time_last_checkpoint);
+ mdd_lfsck_position_to_le(&des->ln_pos_latest_start,
+ &src->ln_pos_latest_start);
+ mdd_lfsck_position_to_le(&des->ln_pos_last_checkpoint,
+ &src->ln_pos_last_checkpoint);
+ mdd_lfsck_position_to_le(&des->ln_pos_first_inconsistent,
+ &src->ln_pos_first_inconsistent);
+ des->ln_items_checked = cpu_to_le64(src->ln_items_checked);
+ des->ln_items_repaired = cpu_to_le64(src->ln_items_repaired);
+ des->ln_items_failed = cpu_to_le64(src->ln_items_failed);
+ des->ln_dirs_checked = cpu_to_le64(src->ln_dirs_checked);
+ des->ln_mlinked_checked = cpu_to_le64(src->ln_mlinked_checked);
+ des->ln_objs_checked_phase2 = cpu_to_le64(src->ln_objs_checked_phase2);
+ des->ln_objs_repaired_phase2 =
+ cpu_to_le64(src->ln_objs_repaired_phase2);
+ des->ln_objs_failed_phase2 = cpu_to_le64(src->ln_objs_failed_phase2);
+ des->ln_objs_nlink_repaired = cpu_to_le64(src->ln_objs_nlink_repaired);
+ des->ln_objs_lost_found = cpu_to_le64(src->ln_objs_lost_found);
+ fid_cpu_to_le(&des->ln_fid_latest_scanned_phase2,
+ &src->ln_fid_latest_scanned_phase2);
+}
+
+/**
+ * \retval +ve: the lfsck_namespace is broken, the caller should reset it.
+ * \retval 0: succeed.
+ * \retval -ve: failed cases.
+ */
+static int mdd_lfsck_namespace_load(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ int len = com->lc_file_size;
+ int rc;
+
+ rc = dt_xattr_get(env, com->lc_obj,
+ mdd_buf_get(env, com->lc_file_disk, len),
+ XATTR_NAME_LFSCK_NAMESPACE, BYPASS_CAPA);
+ if (rc == len) {
+ struct lfsck_namespace *ns = com->lc_file_ram;
+
+ mdd_lfsck_namespace_to_cpu(ns,
+ (struct lfsck_namespace *)com->lc_file_disk);
+ if (ns->ln_magic != LFSCK_NAMESPACE_MAGIC) {
+ CWARN("%.16s: invalid lfsck_namespace magic "
+ "0x%x != 0x%x\n",
+ mdd_lfsck2name(com->lc_lfsck),
+ ns->ln_magic, LFSCK_NAMESPACE_MAGIC);
+ rc = 1;
+ } else {
+ rc = 0;
+ }
+ } else if (rc != -ENODATA) {
+ CERROR("%.16s: fail to load lfsck_namespace, expected = %d, "
+ "rc = %d\n", mdd_lfsck2name(com->lc_lfsck), len, rc);
+ if (rc >= 0)
+ rc = 1;
+ }
+ return rc;
+}
+
+static int mdd_lfsck_namespace_store(const struct lu_env *env,
+ struct lfsck_component *com, bool init)
+{
+ struct dt_object *obj = com->lc_obj;
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct thandle *handle;
+ int len = com->lc_file_size;
+ int rc;
+ ENTRY;
+
+ mdd_lfsck_namespace_to_le((struct lfsck_namespace *)com->lc_file_disk,
+ (struct lfsck_namespace *)com->lc_file_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_namespace: %d\n,", mdd_lfsck2name(lfsck), rc);
+ RETURN(rc);
+ }
+
+ rc = dt_declare_xattr_set(env, obj,
+ mdd_buf_get(env, com->lc_file_disk, len),
+ XATTR_NAME_LFSCK_NAMESPACE, 0, handle);
+ if (rc != 0) {
+ CERROR("%.16s: fail to declare trans for storing "
+ "lfsck_namespace: %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_namespace: %d\n,", mdd_lfsck2name(lfsck), rc);
+ GOTO(out, rc);
+ }
+
+ rc = dt_xattr_set(env, obj,
+ mdd_buf_get(env, com->lc_file_disk, len),
+ XATTR_NAME_LFSCK_NAMESPACE,
+ init ? LU_XATTR_CREATE : LU_XATTR_REPLACE,
+ handle, BYPASS_CAPA);
+ if (rc != 0)
+ CERROR("%.16s: fail to store lfsck_namespace, len = %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_namespace_init(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ struct lfsck_namespace *ns = (struct lfsck_namespace *)com->lc_file_ram;
+ int rc;
+
+ memset(ns, 0, sizeof(*ns));
+ ns->ln_magic = LFSCK_NAMESPACE_MAGIC;
+ ns->ln_status = LS_INIT;
+ down_write(&com->lc_sem);
+ rc = mdd_lfsck_namespace_store(env, com, true);
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_lookup(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct lu_fid *fid,
+ __u8 *flags)
+{
+ struct lu_fid *key = &mdd_env_info(env)->mti_fid;
+ int rc;
+
+ fid_cpu_to_be(key, fid);
+ rc = dt_lookup(env, com->lc_obj, (struct dt_rec *)flags,
+ (const struct dt_key *)key, BYPASS_CAPA);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_delete(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct lu_fid *fid)
+{
+ struct mdd_device *mdd = mdd_lfsck2mdd(com->lc_lfsck);
+ struct lu_fid *key = &mdd_env_info(env)->mti_fid;
+ struct thandle *handle;
+ struct dt_object *obj = com->lc_obj;
+ int rc;
+ ENTRY;
+
+ handle = dt_trans_create(env, mdd->mdd_bottom);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ rc = dt_declare_delete(env, obj, (const struct dt_key *)fid, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_trans_start_local(env, mdd->mdd_bottom, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ fid_cpu_to_be(key, fid);
+ rc = dt_delete(env, obj, (const struct dt_key *)key, handle,
+ BYPASS_CAPA);
+
+ GOTO(out, rc);
+
+out:
+ dt_trans_stop(env, mdd->mdd_bottom, handle);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_update(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct lu_fid *fid,
+ __u8 flags, bool force)
+{
+ struct mdd_device *mdd = mdd_lfsck2mdd(com->lc_lfsck);
+ struct lu_fid *key = &mdd_env_info(env)->mti_fid;
+ struct thandle *handle;
+ struct dt_object *obj = com->lc_obj;
+ int rc;
+ bool exist = false;
+ __u8 tf;
+ ENTRY;
+
+ rc = mdd_lfsck_namespace_lookup(env, com, fid, &tf);
+ if (rc != 0 && rc != -ENOENT)
+ RETURN(rc);
+
+ if (rc == 0) {
+ if (!force || flags == tf)
+ RETURN(0);
+
+ exist = true;
+ handle = dt_trans_create(env, mdd->mdd_bottom);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ rc = dt_declare_delete(env, obj, (const struct dt_key *)fid,
+ handle);
+ if (rc != 0)
+ GOTO(out, rc);
+ } else {
+ handle = dt_trans_create(env, mdd->mdd_bottom);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+ }
+
+ rc = dt_declare_insert(env, obj, (const struct dt_rec *)&flags,
+ (const struct dt_key *)fid, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_trans_start_local(env, mdd->mdd_bottom, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ fid_cpu_to_be(key, fid);
+ if (exist) {
+ rc = dt_delete(env, obj, (const struct dt_key *)key, handle,
+ BYPASS_CAPA);
+ if (rc != 0) {
+ CERROR("%s: fail to insert "DFID", rc = %d\n",
+ mdd_lfsck2name(com->lc_lfsck), PFID(fid), rc);
+ GOTO(out, rc);
+ }
+ }
+
+ rc = dt_insert(env, obj, (const struct dt_rec *)&flags,
+ (const struct dt_key *)key, handle, BYPASS_CAPA, 1);
+
+ GOTO(out, rc);
+
+out:
+ dt_trans_stop(env, mdd->mdd_bottom, handle);
+ return rc;
+}
+
+/**
+ * \retval +ve repaired
+ * \retval 0 no need to repair
+ * \retval -ve error cases
+ */
+static int mdd_lfsck_namespace_double_scan_one(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct mdd_object *child,
+ __u8 flags)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct lu_attr *la = &info->mti_la;
+ struct lu_name *cname = &info->mti_name;
+ struct lu_fid *pfid = &info->mti_fid;
+ struct lu_fid *cfid = &info->mti_fid2;
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ struct linkea_data ldata = { 0 };
+ struct thandle *handle = NULL;
+ bool locked = false;
+ bool update = false;
+ int count;
+ int rc;
+ ENTRY;
+
+ if (com->lc_journal) {
+
+again:
+ LASSERT(!locked);
+
+ com->lc_journal = 1;
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(rc = PTR_ERR(handle));
+
+ rc = mdd_declare_links_add(env, child, handle, NULL);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ mdd_write_lock(env, child, MOR_TGT_CHILD);
+ locked = true;
+ }
+
+ if (unlikely(mdd_is_dead_obj(child)))
+ GOTO(stop, rc = 0);
+
+ rc = mdd_links_read(env, child, &ldata);
+ if (rc != 0) {
+ if ((bk->lb_param & LPF_DRYRUN) &&
+ (rc == -EINVAL || rc == -ENODATA))
+ rc = 1;
+
+ GOTO(stop, rc);
+ }
+
+ rc = mdd_la_get(env, child, la, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ ldata.ld_lee = LINKEA_FIRST_ENTRY(ldata);
+ count = ldata.ld_leh->leh_reccount;
+ while (count-- > 0) {
+ struct mdd_object *parent = NULL;
+ struct dt_object *dir;
+
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen, cname,
+ pfid);
+ if (!fid_is_sane(pfid))
+ goto shrink;
+
+ parent = mdd_object_find(env, mdd, pfid);
+ if (parent == NULL)
+ goto shrink;
+ else if (IS_ERR(parent))
+ GOTO(stop, rc = PTR_ERR(parent));
+
+ if (!mdd_object_exists(parent))
+ goto shrink;
+
+ /* XXX: Currently, skip remote object, the consistency for
+ * remote object will be processed in LFSCK phase III. */
+ if (mdd_object_remote(parent)) {
+ mdd_object_put(env, parent);
+ ldata.ld_lee = LINKEA_NEXT_ENTRY(ldata);
+ continue;
+ }
+
+ dir = mdd_object_child(parent);
+ if (unlikely(!dt_try_as_dir(env, dir)))
+ goto shrink;
+
+ /* To guarantee the 'name' is terminated with '0'. */
+ memcpy(info->mti_key, cname->ln_name, cname->ln_namelen);
+ info->mti_key[cname->ln_namelen] = 0;
+ cname->ln_name = info->mti_key;
+ rc = dt_lookup(env, dir, (struct dt_rec *)cfid,
+ (const struct dt_key *)cname->ln_name,
+ BYPASS_CAPA);
+ if (rc != 0 && rc != -ENOENT) {
+ mdd_object_put(env, parent);
+ GOTO(stop, rc);
+ }
+
+ if (rc == 0) {
+ if (lu_fid_eq(cfid, mdo2fid(child))) {
+ mdd_object_put(env, parent);
+ ldata.ld_lee = LINKEA_NEXT_ENTRY(ldata);
+ continue;
+ }
+
+ goto shrink;
+ }
+
+ if (ldata.ld_leh->leh_reccount > la->la_nlink)
+ goto shrink;
+
+ /* XXX: For the case of there is linkea entry, but without name
+ * entry pointing to the object, and the object link count
+ * isn't less than the count of name entries, then add the
+ * name entry back to namespace.
+ *
+ * It is out of LFSCK 1.5 scope, will implement it in the
+ * future. Keep the linkEA entry. */
+ mdd_object_put(env, parent);
+ ldata.ld_lee = LINKEA_NEXT_ENTRY(ldata);
+ continue;
+
+shrink:
+ if (parent != NULL)
+ mdd_object_put(env, parent);
+ if (bk->lb_param & LPF_DRYRUN)
+ RETURN(1);
+
+ CDEBUG(D_LFSCK, "Remove linkEA: "DFID"[%.*s], "DFID"\n",
+ PFID(mdo2fid(child)), cname->ln_namelen, cname->ln_name,
+ PFID(pfid));
+ linkea_del_buf(&ldata, cname);
+ update = true;
+ }
+
+ if (update) {
+ if (!com->lc_journal) {
+ com->lc_journal = 1;
+ goto again;
+ }
+
+ rc = mdd_links_write(env, child, &ldata, handle);
+ }
+
+ GOTO(stop, rc);
+
+stop:
+ if (locked)
+ mdd_write_unlock(env, child);
+
+ if (handle != NULL)
+ mdd_trans_stop(env, mdd, rc, handle);
+
+ if (rc == 0 && update) {
+ ns->ln_objs_nlink_repaired++;
+ rc = 1;
+ }
+ return rc;
+}
+
+/* namespace APIs */
+
+static int mdd_lfsck_namespace_reset(const struct lu_env *env,
+ struct lfsck_component *com, bool init)
+{
+ struct lfsck_namespace *ns = (struct lfsck_namespace *)com->lc_file_ram;
+ struct mdd_device *mdd = mdd_lfsck2mdd(com->lc_lfsck);
+ struct dt_object *dto, *root;
+ int rc;
+ ENTRY;
+
+ down_write(&com->lc_sem);
+ if (init) {
+ memset(ns, 0, sizeof(*ns));
+ } else {
+ __u32 count = ns->ln_success_count;
+ __u64 last_time = ns->ln_time_last_complete;
+
+ memset(ns, 0, sizeof(*ns));
+ ns->ln_success_count = count;
+ ns->ln_time_last_complete = last_time;
+ }
+ ns->ln_magic = LFSCK_NAMESPACE_MAGIC;
+ ns->ln_status = LS_INIT;
+
+ root = dt_locate(env, mdd->mdd_bottom, &mdd->mdd_local_root_fid);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out, rc = PTR_ERR(root));
+
+ rc = local_object_unlink(env, mdd->mdd_bottom, root,
+ lfsck_namespace_name);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ dto = local_index_find_or_create(env, mdd->mdd_los, root,
+ lfsck_namespace_name,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ &dt_lfsck_features);
+ if (IS_ERR(dto))
+ GOTO(out, rc = PTR_ERR(dto));
+
+ rc = dto->do_ops->do_index_try(env, dto, &dt_lfsck_features);
+ if (rc != 0)
+ GOTO(out, rc);
+ com->lc_obj = dto;
+
+ rc = mdd_lfsck_namespace_store(env, com, true);
+
+ GOTO(out, rc);
+out:
+ lu_object_put(env, &root->do_lu);
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static void
+mdd_lfsck_namespace_fail(const struct lu_env *env, struct lfsck_component *com,
+ bool new_checked)
+{
+ struct lfsck_namespace *ns = (struct lfsck_namespace *)com->lc_file_ram;
+
+ down_write(&com->lc_sem);
+ if (new_checked)
+ com->lc_new_checked++;
+ ns->ln_items_failed++;
+ if (mdd_lfsck_pos_is_zero(&ns->ln_pos_first_inconsistent))
+ mdd_lfsck_pos_fill(env, com->lc_lfsck,
+ &ns->ln_pos_first_inconsistent, false);
+ up_write(&com->lc_sem);
+}
+
+static int mdd_lfsck_namespace_checkpoint(const struct lu_env *env,
+ struct lfsck_component *com,
+ bool init)
+{
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ int rc;
+
+ if (com->lc_new_checked == 0 && !init)
+ return 0;
+
+ down_write(&com->lc_sem);
+
+ if (init) {
+ ns->ln_pos_latest_start = lfsck->ml_pos_current;
+ } else {
+ ns->ln_pos_last_checkpoint = lfsck->ml_pos_current;
+ ns->ln_run_time_phase1 += cfs_duration_sec(cfs_time_current() +
+ HALF_SEC - lfsck->ml_time_last_checkpoint);
+ ns->ln_time_last_checkpoint = cfs_time_current_sec();
+ ns->ln_items_checked += com->lc_new_checked;
+ com->lc_new_checked = 0;
+ }
+
+ rc = mdd_lfsck_namespace_store(env, com, false);
+
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_prep(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ struct lfsck_position *pos = &com->lc_pos_start;
+
+ if (ns->ln_status == LS_COMPLETED) {
+ int rc;
+
+ rc = mdd_lfsck_namespace_reset(env, com, false);
+ if (rc != 0)
+ return rc;
+ }
+
+ down_write(&com->lc_sem);
+
+ ns->ln_time_latest_start = cfs_time_current_sec();
+
+ spin_lock(&lfsck->ml_lock);
+ if (ns->ln_flags & LF_SCANNED_ONCE) {
+ if (!lfsck->ml_drop_dryrun ||
+ mdd_lfsck_pos_is_zero(&ns->ln_pos_first_inconsistent)) {
+ ns->ln_status = LS_SCANNING_PHASE2;
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_add_tail(&com->lc_link,
+ &lfsck->ml_list_double_scan);
+ if (!cfs_list_empty(&com->lc_link_dir))
+ cfs_list_del_init(&com->lc_link_dir);
+ mdd_lfsck_pos_set_zero(pos);
+ } else {
+ ns->ln_status = LS_SCANNING_PHASE1;
+ ns->ln_run_time_phase1 = 0;
+ ns->ln_run_time_phase2 = 0;
+ ns->ln_items_checked = 0;
+ ns->ln_items_repaired = 0;
+ ns->ln_items_failed = 0;
+ ns->ln_dirs_checked = 0;
+ ns->ln_mlinked_checked = 0;
+ ns->ln_objs_checked_phase2 = 0;
+ ns->ln_objs_repaired_phase2 = 0;
+ ns->ln_objs_failed_phase2 = 0;
+ ns->ln_objs_nlink_repaired = 0;
+ ns->ln_objs_lost_found = 0;
+ fid_zero(&ns->ln_fid_latest_scanned_phase2);
+ if (cfs_list_empty(&com->lc_link_dir))
+ cfs_list_add_tail(&com->lc_link_dir,
+ &lfsck->ml_list_dir);
+ *pos = ns->ln_pos_first_inconsistent;
+ }
+ } else {
+ ns->ln_status = LS_SCANNING_PHASE1;
+ if (cfs_list_empty(&com->lc_link_dir))
+ cfs_list_add_tail(&com->lc_link_dir,
+ &lfsck->ml_list_dir);
+ if (!lfsck->ml_drop_dryrun ||
+ mdd_lfsck_pos_is_zero(&ns->ln_pos_first_inconsistent)) {
+ *pos = ns->ln_pos_last_checkpoint;
+ pos->lp_oit_cookie++;
+ } else {
+ *pos = ns->ln_pos_first_inconsistent;
+ }
+ }
+ spin_unlock(&lfsck->ml_lock);
+
+ up_write(&com->lc_sem);
+ return 0;
+}
+
+static int mdd_lfsck_namespace_exec_oit(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct mdd_object *obj)
+{
+ down_write(&com->lc_sem);
+ com->lc_new_checked++;
+ if (S_ISDIR(mdd_object_type(obj)))
+ ((struct lfsck_namespace *)com->lc_file_ram)->ln_dirs_checked++;
+ up_write(&com->lc_sem);
+ return 0;
+}
+
+static int mdd_declare_lfsck_namespace_exec_dir(const struct lu_env *env,
+ struct mdd_object *obj,
+ struct thandle *handle)
+{
+ int rc;
+
+ /* For destroying all invalid linkEA entries. */
+ rc = mdo_declare_xattr_del(env, obj, XATTR_NAME_LINK, handle);
+ if (rc != 0)
+ return rc;
+
+ /* For insert new linkEA entry. */
+ rc = mdd_declare_links_add(env, obj, handle, NULL);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_check_exist(const struct lu_env *env,
+ struct md_lfsck *lfsck,
+ struct mdd_object *obj,
+ const char *name)
+{
+ struct dt_object *dir = lfsck->ml_obj_dir;
+ struct lu_fid *fid = &mdd_env_info(env)->mti_fid;
+ int rc;
+ ENTRY;
+
+ if (unlikely(mdd_is_dead_obj(obj)))
+ RETURN(LFSCK_NAMEENTRY_DEAD);
+
+ rc = dt_lookup(env, dir, (struct dt_rec *)fid,
+ (const struct dt_key *)name, BYPASS_CAPA);
+ if (rc == -ENOENT)
+ RETURN(LFSCK_NAMEENTRY_REMOVED);
+
+ if (rc < 0)
+ RETURN(rc);
+
+ if (!lu_fid_eq(fid, mdo2fid(obj)))
+ RETURN(LFSCK_NAMEENTRY_RECREATED);
+
+ RETURN(0);
+}
+
+static int mdd_lfsck_namespace_exec_dir(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct mdd_object *obj,
+ struct lu_dirent *ent)
+{
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct lu_attr *la = &info->mti_la;
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct linkea_data ldata = { 0 };
+ const struct lu_fid *pfid =
+ lu_object_fid(&lfsck->ml_obj_dir->do_lu);
+ const struct lu_fid *cfid = mdo2fid(obj);
+ const struct lu_name *cname;
+ struct thandle *handle = NULL;
+ bool repaired = false;
+ bool locked = false;
+ int count = 0;
+ int rc;
+ ENTRY;
+
+ cname = mdd_name_get_const(env, ent->lde_name, ent->lde_namelen);
+ down_write(&com->lc_sem);
+ com->lc_new_checked++;
+
+ if (ent->lde_attrs & LUDA_UPGRADE) {
+ ns->ln_flags |= LF_UPGRADE;
+ repaired = true;
+ } else if (ent->lde_attrs & LUDA_REPAIR) {
+ ns->ln_flags |= LF_INCONSISTENT;
+ repaired = true;
+ }
+
+ if (ent->lde_name[0] == '.' &&
+ (ent->lde_namelen == 1 ||
+ (ent->lde_namelen == 2 && ent->lde_name[1] == '.') ||
+ fid_is_dot_lustre(&ent->lde_fid)))
+ GOTO(out, rc = 0);
+
+ if (!(bk->lb_param & LPF_DRYRUN) &&
+ (com->lc_journal || repaired)) {
+
+again:
+ LASSERT(!locked);
+
+ com->lc_journal = 1;
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ GOTO(out, rc = PTR_ERR(handle));
+
+ rc = mdd_declare_lfsck_namespace_exec_dir(env, obj, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ locked = true;
+ }
+
+ rc = mdd_lfsck_namespace_check_exist(env, lfsck, obj, ent->lde_name);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = mdd_links_read(env, obj, &ldata);
+ if (rc == 0) {
+ count = ldata.ld_leh->leh_reccount;
+ rc = linkea_links_find(&ldata, cname, pfid);
+ if (rc == 0) {
+ /* For dir, if there are more than one linkea entries,
+ * then remove all the other redundant linkea entries.*/
+ if (unlikely(count > 1 &&
+ S_ISDIR(mdd_object_type(obj))))
+ goto unmatch;
+
+ goto record;
+ } else {
+
+unmatch:
+ ns->ln_flags |= LF_INCONSISTENT;
+ if (bk->lb_param & LPF_DRYRUN) {
+ repaired = true;
+ goto record;
+ }
+
+ /*For dir, remove the unmatched linkea entry directly.*/
+ if (S_ISDIR(mdd_object_type(obj))) {
+ if (!com->lc_journal)
+ goto again;
+
+ rc = mdo_xattr_del(env, obj, XATTR_NAME_LINK,
+ handle, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ goto nodata;
+ } else {
+ goto add;
+ }
+ }
+ } else if (unlikely(rc == -EINVAL)) {
+ ns->ln_flags |= LF_INCONSISTENT;
+ if (bk->lb_param & LPF_DRYRUN) {
+ count = 1;
+ repaired = true;
+ goto record;
+ }
+
+ if (!com->lc_journal)
+ goto again;
+
+ /* The magic crashed, we are not sure whether there are more
+ * corrupt data in the linkea, so remove all linkea entries. */
+ rc = mdo_xattr_del(env, obj, XATTR_NAME_LINK, handle,
+ BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ goto nodata;
+ } else if (rc == -ENODATA) {
+ ns->ln_flags |= LF_UPGRADE;
+ if (bk->lb_param & LPF_DRYRUN) {
+ count = 1;
+ repaired = true;
+ goto record;
+ }
+
+nodata:
+ rc = linkea_data_new(&ldata, &mdd_env_info(env)->mti_link_buf);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+add:
+ if (!com->lc_journal)
+ goto again;
+
+ rc = linkea_add_buf(&ldata, cname, pfid);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = mdd_links_write(env, obj, &ldata, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ count = ldata.ld_leh->leh_reccount;
+ repaired = true;
+ } else {
+ GOTO(stop, rc);
+ }
+
+record:
+ LASSERT(count > 0);
+
+ rc = mdd_la_get(env, obj, la, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ if ((count == 1) &&
+ (la->la_nlink == 1 || S_ISDIR(mdd_object_type(obj))))
+ /* Usually, it is for single linked object or dir, do nothing.*/
+ GOTO(stop, rc);
+
+ /* Following modification will be in another transaction. */
+ if (handle != NULL) {
+ LASSERT(mdd_write_locked(env, obj));
+
+ mdd_write_unlock(env, obj);
+ locked = false;
+
+ mdd_trans_stop(env, mdd, 0, handle);
+ handle = NULL;
+ }
+
+ ns->ln_mlinked_checked++;
+ rc = mdd_lfsck_namespace_update(env, com, cfid,
+ count != la->la_nlink ? LLF_UNMATCH_NLINKS : 0, false);
+
+ GOTO(out, rc);
+
+stop:
+ if (locked)
+ mdd_write_unlock(env, obj);
+
+ if (handle != NULL)
+ mdd_trans_stop(env, mdd, rc, handle);
+
+out:
+ if (rc < 0) {
+ ns->ln_items_failed++;
+ if (mdd_lfsck_pos_is_zero(&ns->ln_pos_first_inconsistent))
+ mdd_lfsck_pos_fill(env, lfsck,
+ &ns->ln_pos_first_inconsistent,
+ false);
+ if (!(bk->lb_param & LPF_FAILOUT))
+ rc = 0;
+ } else {
+ if (repaired)
+ ns->ln_items_repaired++;
+ else
+ com->lc_journal = 0;
+ rc = 0;
+ }
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static int mdd_lfsck_namespace_post(const struct lu_env *env,
+ struct lfsck_component *com,
+ int result, bool init)
+{
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ int rc;
+
+ down_write(&com->lc_sem);
+
+ spin_lock(&lfsck->ml_lock);
+ if (!init)
+ ns->ln_pos_last_checkpoint = lfsck->ml_pos_current;
+ if (result > 0) {
+ ns->ln_status = LS_SCANNING_PHASE2;
+ ns->ln_flags |= LF_SCANNED_ONCE;
+ ns->ln_flags &= ~LF_UPGRADE;
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_del_init(&com->lc_link_dir);
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_double_scan);
+ } else if (result == 0) {
+ if (lfsck->ml_paused) {
+ ns->ln_status = LS_PAUSED;
+ } else {
+ ns->ln_status = LS_STOPPED;
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_del_init(&com->lc_link_dir);
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_idle);
+ }
+ } else {
+ ns->ln_status = LS_FAILED;
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_del_init(&com->lc_link_dir);
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_idle);
+ }
+ spin_unlock(&lfsck->ml_lock);
+
+ if (!init) {
+ ns->ln_run_time_phase1 += cfs_duration_sec(cfs_time_current() +
+ HALF_SEC - lfsck->ml_time_last_checkpoint);
+ ns->ln_time_last_checkpoint = cfs_time_current_sec();
+ ns->ln_items_checked += com->lc_new_checked;
+ com->lc_new_checked = 0;
+ }
+
+ rc = mdd_lfsck_namespace_store(env, com, false);
+
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static int
+mdd_lfsck_namespace_dump(const struct lu_env *env, struct lfsck_component *com,
+ char *buf, int len)
+{
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ int save = len;
+ int ret = -ENOSPC;
+ int rc;
+
+ down_read(&com->lc_sem);
+ rc = snprintf(buf, len,
+ "name: lfsck_namespace\n"
+ "magic: 0x%x\n"
+ "version: %d\n"
+ "status: %s\n",
+ ns->ln_magic,
+ bk->lb_version,
+ lfsck_status_names[ns->ln_status]);
+ if (rc <= 0)
+ goto out;
+
+ buf += rc;
+ len -= rc;
+ rc = lfsck_bits_dump(&buf, &len, ns->ln_flags, lfsck_flags_names,
+ "flags");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_bits_dump(&buf, &len, bk->lb_param, lfsck_param_names,
+ "param");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_time_dump(&buf, &len, ns->ln_time_last_complete,
+ "time_since_last_completed");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_time_dump(&buf, &len, ns->ln_time_latest_start,
+ "time_since_latest_start");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_time_dump(&buf, &len, ns->ln_time_last_checkpoint,
+ "time_since_last_checkpoint");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_pos_dump(&buf, &len, &ns->ln_pos_latest_start,
+ "latest_start_position");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_pos_dump(&buf, &len, &ns->ln_pos_last_checkpoint,
+ "last_checkpoint_position");
+ if (rc < 0)
+ goto out;
+
+ rc = lfsck_pos_dump(&buf, &len, &ns->ln_pos_first_inconsistent,
+ "first_failure_position");
+ if (rc < 0)
+ goto out;
+
+ if (ns->ln_status == LS_SCANNING_PHASE1) {
+ struct lfsck_position pos;
+ cfs_duration_t duration = cfs_time_current() -
+ lfsck->ml_time_last_checkpoint;
+ __u64 checked = ns->ln_items_checked + com->lc_new_checked;
+ __u64 speed = checked;
+ __u64 new_checked = com->lc_new_checked * CFS_HZ;
+ __u32 rtime = ns->ln_run_time_phase1 +
+ cfs_duration_sec(duration + HALF_SEC);
+
+ if (duration != 0)
+ do_div(new_checked, duration);
+ if (rtime != 0)
+ do_div(speed, rtime);
+ rc = snprintf(buf, len,
+ "checked_phase1: "LPU64"\n"
+ "checked_phase2: "LPU64"\n"
+ "updated_phase1: "LPU64"\n"
+ "updated_phase2: "LPU64"\n"
+ "failed_phase1: "LPU64"\n"
+ "failed_phase2: "LPU64"\n"
+ "dirs: "LPU64"\n"
+ "M-linked: "LPU64"\n"
+ "nlinks_repaired: "LPU64"\n"
+ "lost_found: "LPU64"\n"
+ "success_count: %u\n"
+ "run_time_phase1: %u seconds\n"
+ "run_time_phase2: %u seconds\n"
+ "average_speed_phase1: "LPU64" items/sec\n"
+ "average_speed_phase2: N/A\n"
+ "real-time_speed_phase1: "LPU64" items/sec\n"
+ "real-time_speed_phase2: N/A\n",
+ checked,
+ ns->ln_objs_checked_phase2,
+ ns->ln_items_repaired,
+ ns->ln_objs_repaired_phase2,
+ ns->ln_items_failed,
+ ns->ln_objs_failed_phase2,
+ ns->ln_dirs_checked,
+ ns->ln_mlinked_checked,
+ ns->ln_objs_nlink_repaired,
+ ns->ln_objs_lost_found,
+ ns->ln_success_count,
+ rtime,
+ ns->ln_run_time_phase2,
+ speed,
+ new_checked);
+ if (rc <= 0)
+ goto out;
+
+ buf += rc;
+ len -= rc;
+ mdd_lfsck_pos_fill(env, lfsck, &pos, false);
+ rc = lfsck_pos_dump(&buf, &len, &pos, "current_position");
+ if (rc <= 0)
+ goto out;
+ } else if (ns->ln_status == LS_SCANNING_PHASE2) {
+ cfs_duration_t duration = cfs_time_current() -
+ lfsck->ml_time_last_checkpoint;
+ __u64 checked = ns->ln_objs_checked_phase2 +
+ com->lc_new_checked;
+ __u64 speed1 = ns->ln_items_checked;
+ __u64 speed2 = checked;
+ __u64 new_checked = com->lc_new_checked * CFS_HZ;
+ __u32 rtime = ns->ln_run_time_phase2 +
+ cfs_duration_sec(duration + HALF_SEC);
+
+ if (duration != 0)
+ do_div(new_checked, duration);
+ if (ns->ln_run_time_phase1 != 0)
+ do_div(speed1, ns->ln_run_time_phase1);
+ if (rtime != 0)
+ do_div(speed2, rtime);
+ rc = snprintf(buf, len,
+ "checked_phase1: "LPU64"\n"
+ "checked_phase2: "LPU64"\n"
+ "updated_phase1: "LPU64"\n"
+ "updated_phase2: "LPU64"\n"
+ "failed_phase1: "LPU64"\n"
+ "failed_phase2: "LPU64"\n"
+ "dirs: "LPU64"\n"
+ "M-linked: "LPU64"\n"
+ "nlinks_repaired: "LPU64"\n"
+ "lost_found: "LPU64"\n"
+ "success_count: %u\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: "LPU64" objs/sec\n"
+ "current_position: "DFID"\n",
+ ns->ln_items_checked,
+ checked,
+ ns->ln_items_repaired,
+ ns->ln_objs_repaired_phase2,
+ ns->ln_items_failed,
+ ns->ln_objs_failed_phase2,
+ ns->ln_dirs_checked,
+ ns->ln_mlinked_checked,
+ ns->ln_objs_nlink_repaired,
+ ns->ln_objs_lost_found,
+ ns->ln_success_count,
+ ns->ln_run_time_phase1,
+ rtime,
+ speed1,
+ speed2,
+ new_checked,
+ PFID(&ns->ln_fid_latest_scanned_phase2));
+ if (rc <= 0)
+ goto out;
+
+ buf += rc;
+ len -= rc;
+ } else {
+ __u64 speed1 = ns->ln_items_checked;
+ __u64 speed2 = ns->ln_objs_checked_phase2;
+
+ if (ns->ln_run_time_phase1 != 0)
+ do_div(speed1, ns->ln_run_time_phase1);
+ if (ns->ln_run_time_phase2 != 0)
+ do_div(speed2, ns->ln_run_time_phase2);
+ rc = snprintf(buf, len,
+ "checked_phase1: "LPU64"\n"
+ "checked_phase2: "LPU64"\n"
+ "updated_phase1: "LPU64"\n"
+ "updated_phase2: "LPU64"\n"
+ "failed_phase1: "LPU64"\n"
+ "failed_phase2: "LPU64"\n"
+ "dirs: "LPU64"\n"
+ "M-linked: "LPU64"\n"
+ "nlinks_repaired: "LPU64"\n"
+ "lost_found: "LPU64"\n"
+ "success_count: %u\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",
+ ns->ln_items_checked,
+ ns->ln_objs_checked_phase2,
+ ns->ln_items_repaired,
+ ns->ln_objs_repaired_phase2,
+ ns->ln_items_failed,
+ ns->ln_objs_failed_phase2,
+ ns->ln_dirs_checked,
+ ns->ln_mlinked_checked,
+ ns->ln_objs_nlink_repaired,
+ ns->ln_objs_lost_found,
+ ns->ln_success_count,
+ ns->ln_run_time_phase1,
+ ns->ln_run_time_phase2,
+ speed1,
+ speed2);
+ if (rc <= 0)
+ goto out;
+
+ buf += rc;
+ len -= rc;
+ }
+ ret = save - len;
+
+out:
+ up_read(&com->lc_sem);
+ return ret;
+}
+
+static int mdd_lfsck_namespace_double_scan(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ struct md_lfsck *lfsck = com->lc_lfsck;
+ struct ptlrpc_thread *thread = &lfsck->ml_thread;
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct lfsck_bookmark *bk = &lfsck->ml_bookmark_ram;
+ struct lfsck_namespace *ns =
+ (struct lfsck_namespace *)com->lc_file_ram;
+ struct dt_object *obj = com->lc_obj;
+ const struct dt_it_ops *iops = &obj->do_index_ops->dio_it;
+ struct mdd_object *target;
+ struct dt_it *di;
+ struct dt_key *key;
+ struct lu_fid fid;
+ int rc;
+ __u8 flags;
+ ENTRY;
+
+ lfsck->ml_new_scanned = 0;
+ lfsck->ml_time_last_checkpoint = cfs_time_current();
+ lfsck->ml_time_next_checkpoint = lfsck->ml_time_last_checkpoint +
+ cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
+
+ di = iops->init(env, obj, 0, BYPASS_CAPA);
+ if (IS_ERR(di))
+ RETURN(PTR_ERR(di));
+
+ fid_cpu_to_be(&fid, &ns->ln_fid_latest_scanned_phase2);
+ rc = iops->get(env, di, (const struct dt_key *)&fid);
+ if (rc < 0)
+ GOTO(fini, rc);
+
+ /* Skip the start one, which either has been processed or non-exist. */
+ rc = iops->next(env, di);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_DOUBLESCAN))
+ GOTO(put, rc = 0);
+
+ do {
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY3) &&
+ cfs_fail_val > 0) {
+ 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);
+ fid_be_to_cpu(&fid, (const struct lu_fid *)key);
+ target = mdd_object_find(env, mdd, &fid);
+ down_write(&com->lc_sem);
+ if (target == NULL) {
+ rc = 0;
+ goto checkpoint;
+ } else if (IS_ERR(target)) {
+ rc = PTR_ERR(target);
+ goto checkpoint;
+ }
+
+ /* XXX: Currently, skip remote object, the consistency for
+ * remote object will be processed in LFSCK phase III. */
+ if (!mdd_object_exists(target) || mdd_object_remote(target))
+ goto obj_put;
+
+ rc = iops->rec(env, di, (struct dt_rec *)&flags, 0);
+ if (rc == 0)
+ rc = mdd_lfsck_namespace_double_scan_one(env, com,
+ target, flags);
+
+obj_put:
+ mdd_object_put(env, target);
+
+checkpoint:
+ lfsck->ml_new_scanned++;
+ com->lc_new_checked++;
+ ns->ln_fid_latest_scanned_phase2 = fid;
+ if (rc > 0)
+ ns->ln_objs_repaired_phase2++;
+ else if (rc < 0)
+ ns->ln_objs_failed_phase2++;
+ up_write(&com->lc_sem);
+
+ if ((rc == 0) || ((rc > 0) && !(bk->lb_param & LPF_DRYRUN))) {
+ mdd_lfsck_namespace_delete(env, com, &fid);
+ } else if (rc < 0) {
+ flags |= LLF_REPAIR_FAILED;
+ mdd_lfsck_namespace_update(env, com, &fid, flags, true);
+ }
+
+ if (rc < 0 && bk->lb_param & LPF_FAILOUT)
+ GOTO(put, rc);
+
+ if (likely(cfs_time_beforeq(cfs_time_current(),
+ lfsck->ml_time_next_checkpoint)) ||
+ com->lc_new_checked == 0)
+ goto speed;
+
+ down_write(&com->lc_sem);
+ ns->ln_run_time_phase2 += cfs_duration_sec(cfs_time_current() +
+ HALF_SEC - lfsck->ml_time_last_checkpoint);
+ ns->ln_time_last_checkpoint = cfs_time_current_sec();
+ ns->ln_objs_checked_phase2 += com->lc_new_checked;
+ com->lc_new_checked = 0;
+ rc = mdd_lfsck_namespace_store(env, com, false);
+ up_write(&com->lc_sem);
+ if (rc != 0)
+ GOTO(put, 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);
+
+speed:
+ mdd_lfsck_control_speed(lfsck);
+ if (unlikely(!thread_is_running(thread)))
+ GOTO(put, rc = 0);
+
+ rc = iops->next(env, di);
+ } while (rc == 0);
+
+ GOTO(put, rc);
+
+put:
+ iops->put(env, di);
+
+fini:
+ iops->fini(env, di);
+ down_write(&com->lc_sem);
+
+ ns->ln_run_time_phase2 += cfs_duration_sec(cfs_time_current() +
+ HALF_SEC - lfsck->ml_time_last_checkpoint);
+ ns->ln_time_last_checkpoint = cfs_time_current_sec();
+ ns->ln_objs_checked_phase2 += com->lc_new_checked;
+ com->lc_new_checked = 0;
+
+ if (rc > 0) {
+ com->lc_journal = 0;
+ ns->ln_status = LS_COMPLETED;
+ if (!(bk->lb_param & LPF_DRYRUN))
+ ns->ln_flags &=
+ ~(LF_SCANNED_ONCE | LF_INCONSISTENT | LF_UPGRADE);
+ ns->ln_time_last_complete = ns->ln_time_last_checkpoint;
+ ns->ln_success_count++;
+ } else if (rc == 0) {
+ if (lfsck->ml_paused)
+ ns->ln_status = LS_PAUSED;
+ else
+ ns->ln_status = LS_STOPPED;
+ } else {
+ ns->ln_status = LS_FAILED;
+ }
+
+ if (ns->ln_status != LS_PAUSED) {
+ spin_lock(&lfsck->ml_lock);
+ cfs_list_del_init(&com->lc_link);
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_idle);
+ spin_unlock(&lfsck->ml_lock);
+ }
+
+ rc = mdd_lfsck_namespace_store(env, com, false);
+
+ up_write(&com->lc_sem);
+ return rc;
+}
+
+static struct lfsck_operations mdd_lfsck_namespace_ops = {
+ .lfsck_reset = mdd_lfsck_namespace_reset,
+ .lfsck_fail = mdd_lfsck_namespace_fail,
+ .lfsck_checkpoint = mdd_lfsck_namespace_checkpoint,
+ .lfsck_prep = mdd_lfsck_namespace_prep,
+ .lfsck_exec_oit = mdd_lfsck_namespace_exec_oit,
+ .lfsck_exec_dir = mdd_lfsck_namespace_exec_dir,
+ .lfsck_post = mdd_lfsck_namespace_post,
+ .lfsck_dump = mdd_lfsck_namespace_dump,
+ .lfsck_double_scan = mdd_lfsck_namespace_double_scan,
+};
+
+/* LFSCK component setup/cleanup functions */
+
+static int mdd_lfsck_namespace_setup(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ struct mdd_device *mdd = mdd_lfsck2mdd(lfsck);
+ struct lfsck_component *com;
+ struct lfsck_namespace *ns;
+ struct dt_object *obj, *root;
+ int rc;
+ ENTRY;
+
+ OBD_ALLOC_PTR(com);
+ if (com == NULL)
+ RETURN(-ENOMEM);
+
+ CFS_INIT_LIST_HEAD(&com->lc_link);
+ CFS_INIT_LIST_HEAD(&com->lc_link_dir);
+ init_rwsem(&com->lc_sem);
+ atomic_set(&com->lc_ref, 1);
+ com->lc_lfsck = lfsck;
+ com->lc_type = LT_NAMESPACE;
+ com->lc_ops = &mdd_lfsck_namespace_ops;
+ com->lc_file_size = sizeof(struct lfsck_namespace);
+ OBD_ALLOC(com->lc_file_ram, com->lc_file_size);
+ if (com->lc_file_ram == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ OBD_ALLOC(com->lc_file_disk, com->lc_file_size);
+ if (com->lc_file_disk == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ root = dt_locate(env, mdd->mdd_bottom, &mdd->mdd_local_root_fid);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out, rc = PTR_ERR(root));
+
+ obj = local_index_find_or_create(env, mdd->mdd_los, root,
+ lfsck_namespace_name,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ &dt_lfsck_features);
+ lu_object_put(env, &root->do_lu);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ com->lc_obj = obj;
+ rc = obj->do_ops->do_index_try(env, obj, &dt_lfsck_features);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = mdd_lfsck_namespace_load(env, com);
+ if (rc > 0)
+ rc = mdd_lfsck_namespace_reset(env, com, true);
+ else if (rc == -ENODATA)
+ rc = mdd_lfsck_namespace_init(env, com);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ ns = (struct lfsck_namespace *)com->lc_file_ram;
+ switch (ns->ln_status) {
+ case LS_INIT:
+ case LS_COMPLETED:
+ case LS_FAILED:
+ case LS_STOPPED:
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_idle);
+ break;
+ default:
+ CERROR("%s: unknown status: %u\n",
+ mdd_lfsck2name(lfsck), ns->ln_status);
+ /* fall through */
+ case LS_SCANNING_PHASE1:
+ case LS_SCANNING_PHASE2:
+ /* No need to store the status to disk right now.
+ * If the system crashed before the status stored,
+ * it will be loaded back when next time. */
+ ns->ln_status = LS_CRASHED;
+ /* fall through */
+ case LS_PAUSED:
+ case LS_CRASHED:
+ cfs_list_add_tail(&com->lc_link, &lfsck->ml_list_scan);
+ cfs_list_add_tail(&com->lc_link_dir, &lfsck->ml_list_dir);
+ break;
+ }
+
+ GOTO(out, rc = 0);
+
+out:
+ if (rc != 0)
+ mdd_lfsck_component_cleanup(env, com);
+ return rc;
+}
+
+/* helper functions for framework */
+
+static int object_needs_lfsck(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;
+ }
+
+ /* .lustre doesn't contain "real" user objects, no need lfsck */
+ if (fid_is_dot_lustre(mdo2fid(obj))) {
+ if (depth > 0)
+ mdd_object_put(env, obj);
+ return 0;
+ }
+
+ 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);
+
+ if (!mdd_object_exists(obj)) {
+ mdd_object_put(env, obj);
+ return 0;
+ }
+
+ /* Currently, only client visible directory can be remote. */
+ if (mdd_object_remote(obj)) {
+ mdd_object_put(env, obj);
+ return 1;
+ }
+
+ 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 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, new_checked);
+ }
+}
+
+static int mdd_lfsck_checkpoint(const struct lu_env *env,
+ struct md_lfsck *lfsck)
+{
+ 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, false);
+ 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);
+
+ lfsck->ml_current_oit_processed = 0;
+ 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);
+ if (rc > 0) {
+ lfsck->ml_oit_over = 1;
+ rc = 0;
+ }
+
+ GOTO(out, rc);
+ }
+
+ rc = iops->load(env, lfsck->ml_di_oit, pos->lp_oit_cookie);
+ if (rc < 0)
+ GOTO(out, rc);
+ else if (rc > 0)
+ lfsck->ml_oit_over = 1;
+
+ 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: Currently, skip remote object, the consistency for
+ * remote object will be processed in LFSCK phase III. */
+ 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));
+
+ LASSERT(pos->lp_dir_cookie < MDS_DIR_END_OFF);
+
+ rc = iops->load(env, di, pos->lp_dir_cookie);
+ if ((rc == 0) || (rc > 0 && pos->lp_dir_cookie > 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) {
+ cfs_list_for_each_entry_safe(com, next, &lfsck->ml_list_scan,
+ lc_link)
+ com->lc_ops->lfsck_post(env, com, rc, true);
- mdd = container_of0(lfsck, struct mdd_device, mdd_lfsck);
- return mdd->mdd_obd_dev->obd_name;
+ return rc;
+ }
+
+ rc = 0;
+ mdd_lfsck_pos_fill(env, lfsck, &lfsck->ml_pos_current, true);
+ 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;
}
-void mdd_lfsck_set_speed(struct md_lfsck *lfsck, __u32 limit)
+static int mdd_lfsck_exec_oit(const struct lu_env *env, struct md_lfsck *lfsck,
+ struct mdd_object *obj)
{
- cfs_spin_lock(&lfsck->ml_lock);
- lfsck->ml_speed_limit = limit;
- if (limit != LFSCK_SPEED_NO_LIMIT) {
- if (limit > CFS_HZ) {
- lfsck->ml_sleep_rate = limit / CFS_HZ;
- lfsck->ml_sleep_jif = 1;
- } else {
- lfsck->ml_sleep_rate = 1;
- lfsck->ml_sleep_jif = CFS_HZ / limit;
- }
- } else {
- lfsck->ml_sleep_jif = 0;
- lfsck->ml_sleep_rate = 0;
+ 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_needs_lfsck(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);
+ 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;
}
- cfs_spin_unlock(&lfsck->ml_lock);
+ return 0;
}
-static void mdd_lfsck_control_speed(struct md_lfsck *lfsck)
+static int mdd_lfsck_post(const struct lu_env *env, struct md_lfsck *lfsck,
+ int result)
{
- struct ptlrpc_thread *thread = &lfsck->ml_thread;
- struct l_wait_info lwi;
+ struct lfsck_component *com;
+ struct lfsck_component *next;
+ int rc;
- if (lfsck->ml_sleep_jif > 0 &&
- lfsck->ml_new_scanned >= lfsck->ml_sleep_rate) {
- cfs_spin_lock(&lfsck->ml_lock);
- if (likely(lfsck->ml_sleep_jif > 0 &&
- lfsck->ml_new_scanned >= lfsck->ml_sleep_rate)) {
- lwi = LWI_TIMEOUT_INTR(lfsck->ml_sleep_jif, NULL,
- LWI_ON_SIGNAL_NOOP, NULL);
- cfs_spin_unlock(&lfsck->ml_lock);
+ mdd_lfsck_pos_fill(env, lfsck, &lfsck->ml_pos_current, false);
+ cfs_list_for_each_entry_safe(com, next, &lfsck->ml_list_scan, lc_link) {
+ rc = com->lc_ops->lfsck_post(env, com, result, 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 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;
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY2) &&
+ cfs_fail_val > 0) {
+ 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);
- lfsck->ml_new_scanned = 0;
- } else {
- cfs_spin_unlock(&lfsck->ml_lock);
}
- }
+
+ 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, 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, true);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(PTR_ERR(child));
+ else
+ goto checkpoint;
+ }
+
+ /* XXX: Currently, skip remote object, the consistency for
+ * remote object will be processed in LFSCK phase III. */
+ 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);
+ 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);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_FATAL2)) {
+ spin_lock(&lfsck->ml_lock);
+ thread_set_flags(thread, SVC_STOPPING);
+ spin_unlock(&lfsck->ml_lock);
+ RETURN(-EINVAL);
+ }
+
+ 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);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DELAY1) &&
+ cfs_fail_val > 0) {
+ 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);
+ }
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CRASH))
+ RETURN(0);
+
+ lfsck->ml_current_oit_processed = 1;
+ lfsck->ml_new_scanned++;
+ rc = iops->rec(env, di, (struct dt_rec *)fid, 0);
+ if (rc != 0) {
+ mdd_lfsck_fail(env, lfsck, 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);
+ if (bk->lb_param & LPF_FAILOUT)
+ RETURN(PTR_ERR(target));
+ else
+ goto checkpoint;
+ }
+
+ /* XXX: Currently, skip remote object, the consistency for
+ * remote object will be processed in LFSCK phase III. */
+ 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);
+ if (rc != 0 && bk->lb_param & LPF_FAILOUT)
+ RETURN(rc);
+
+ /* Rate control. */
+ mdd_lfsck_control_speed(lfsck);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_FATAL1)) {
+ spin_lock(&lfsck->ml_lock);
+ thread_set_flags(thread, SVC_STOPPING);
+ spin_unlock(&lfsck->ml_lock);
+ RETURN(-EINVAL);
+ }
+
+ rc = iops->next(env, di);
+ if (unlikely(rc > 0))
+ lfsck->ml_oit_over = 1;
+ else if (likely(rc == 0))
+ lfsck->ml_current_oit_processed = 0;
+
+ 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);
- /* XXX: Prepare before wakeup the sponsor.
- * Each lfsck component should call iops->get() API with
- * every bookmark, then low layer module can decide the
- * start point for current iteration. */
+ 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());
- cfs_spin_lock(&lfsck->ml_lock);
+ spin_lock(&lfsck->ml_lock);
thread_set_flags(thread, SVC_RUNNING);
- cfs_spin_unlock(&lfsck->ml_lock);
+ spin_unlock(&lfsck->ml_lock);
cfs_waitq_broadcast(&thread->t_ctl_waitq);
- /* Call iops->load() to finish the choosing start point. */
- 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. */
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_CRASH))
+ 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 nunecessary 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);
noenv:
- cfs_spin_lock(&lfsck->ml_lock);
+ spin_lock(&lfsck->ml_lock);
thread_set_flags(thread, SVC_STOPPED);
cfs_waitq_broadcast(&thread->t_ctl_waitq);
- cfs_spin_unlock(&lfsck->ml_lock);
+ spin_unlock(&lfsck->ml_lock);
+ 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_dump(const struct lu_env *env, struct md_lfsck *lfsck,
+ __u16 type, char *buf, int len)
+{
+ struct lfsck_component *com;
+ int rc;
+
+ if (!lfsck->ml_initialized)
+ return -ENODEV;
+
+ com = mdd_lfsck_component_find(lfsck, type);
+ if (com == NULL)
+ return -ENOTSUPP;
+
+ rc = com->lc_ops->lfsck_dump(env, com, buf, len);
+ mdd_lfsck_component_put(env, com);
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;
- cfs_mutex_lock(&lfsck->ml_mutex);
- cfs_spin_lock(&lfsck->ml_lock);
- if (thread_is_running(thread)) {
- cfs_spin_unlock(&lfsck->ml_lock);
- cfs_mutex_unlock(&lfsck->ml_mutex);
+ 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) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AUTO)))
+ RETURN(0);
+
+ mutex_lock(&lfsck->ml_mutex);
+ spin_lock(&lfsck->ml_lock);
+ if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
+ spin_unlock(&lfsck->ml_lock);
+ mutex_unlock(&lfsck->ml_mutex);
RETURN(-EALREADY);
}
- cfs_spin_unlock(&lfsck->ml_lock);
- if (start->ls_valid & LSV_SPEED_LIMIT)
- mdd_lfsck_set_speed(lfsck, start->ls_speed_limit);
+ spin_unlock(&lfsck->ml_lock);
+
+ 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;
+ }
}
- /* 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 (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;
+ }
+ }
+
+ 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,
+ false);
+ 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);
- cfs_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 };
ENTRY;
- cfs_mutex_lock(&lfsck->ml_mutex);
- cfs_spin_lock(&lfsck->ml_lock);
+ if (!lfsck->ml_initialized)
+ RETURN(0);
+
+ mutex_lock(&lfsck->ml_mutex);
+ spin_lock(&lfsck->ml_lock);
if (thread_is_init(thread) || thread_is_stopped(thread)) {
- cfs_spin_unlock(&lfsck->ml_lock);
- cfs_mutex_unlock(&lfsck->ml_mutex);
+ spin_unlock(&lfsck->ml_lock);
+ mutex_unlock(&lfsck->ml_mutex);
RETURN(-EALREADY);
}
+ if (pause)
+ lfsck->ml_paused = 1;
thread_set_flags(thread, SVC_STOPPING);
- cfs_spin_unlock(&lfsck->ml_lock);
+ /* 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);
l_wait_event(thread->t_ctl_waitq,
thread_is_stopped(thread),
&lwi);
- cfs_mutex_unlock(&lfsck->ml_mutex);
+ mutex_unlock(&lfsck->ml_mutex);
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 };
int mdd_lfsck_setup(const struct lu_env *env, struct mdd_device *mdd)
{
- struct md_lfsck *lfsck = &mdd->mdd_lfsck;
- struct dt_object *obj;
- int rc;
+ struct md_lfsck *lfsck = &mdd->mdd_lfsck;
+ struct dt_object *obj;
+ struct lu_fid fid;
+ int rc;
- memset(lfsck, 0, sizeof(*lfsck));
- lfsck->ml_version = LFSCK_VERSION_V1;
- cfs_waitq_init(&lfsck->ml_thread.t_ctl_waitq);
- cfs_mutex_init(&lfsck->ml_mutex);
- cfs_spin_lock_init(&lfsck->ml_lock);
+ ENTRY;
- 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);
+ LASSERT(!lfsck->ml_initialized);
- lfsck->ml_bookmark_obj = obj;
+ 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_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);
- return rc;
+ if (rc == -ENOTSUPP)
+ RETURN(0);
+ GOTO(out, rc);
}
- lfsck->ml_it_obj = obj;
+ /* LFSCK bookmark */
+ fid_zero(&fid);
+ rc = mdd_local_file_create(env, mdd, &mdd->mdd_local_root_fid,
+ lfsck_bookmark_name,
+ S_IFREG | S_IRUGO | S_IWUSR, &fid);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ obj = dt_locate(env, mdd->mdd_bottom, &fid);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ LASSERT(lu_object_exists(&obj->do_lu));
+ lfsck->ml_bookmark_obj = obj;
+
+ rc = mdd_lfsck_bookmark_load(env, lfsck);
+ if (rc == -ENODATA)
+ rc = mdd_lfsck_bookmark_init(env, lfsck);
+ if (rc != 0)
+ GOTO(out, rc);
+ rc = mdd_lfsck_namespace_setup(env, lfsck);
+ if (rc < 0)
+ GOTO(out, rc);
+ /* XXX: LFSCK components initialization to be added here. */
+ RETURN(0);
+out:
+ lu_object_put(env, &lfsck->ml_obj_oit->do_lu);
+ lfsck->ml_obj_oit = NULL;
return 0;
}
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