* GPL HEADER END
*/
/*
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2013, 2016, Intel Corporation.
*/
/*
* lustre/lfsck/lfsck_lib.c
* Author: Fan, Yong <fan.yong@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_LFSCK
-#include <libcfs/list.h>
+#include <linux/kthread.h>
+#include <linux/sched.h>
+#include <linux/list.h>
#include <lu_object.h>
#include <dt_object.h>
#include <md_object.h>
#include "lfsck_internal.h"
+#define LFSCK_CHECKPOINT_SKIP 1
+
/* define lfsck thread key */
LU_KEY_INIT(lfsck, struct lfsck_thread_info);
struct lfsck_thread_info *info = data;
lu_buf_free(&info->lti_linkea_buf);
+ lu_buf_free(&info->lti_linkea_buf2);
+ lu_buf_free(&info->lti_big_buf);
OBD_FREE_PTR(info);
}
LU_CONTEXT_KEY_DEFINE(lfsck, LCT_MD_THREAD | LCT_DT_THREAD);
LU_KEY_INIT_GENERIC(lfsck);
-static CFS_LIST_HEAD(lfsck_instance_list);
+static struct list_head lfsck_instance_list;
+static struct list_head lfsck_ost_orphan_list;
+static struct list_head lfsck_mdt_orphan_list;
static DEFINE_SPINLOCK(lfsck_instance_lock);
-const char *lfsck_status_names[] = {
- "init",
- "scanning-phase1",
- "scanning-phase2",
- "completed",
- "failed",
- "stopped",
- "paused",
- "crashed",
- NULL
-};
-
const char *lfsck_flags_names[] = {
"scanned-once",
"inconsistent",
"upgrade",
+ "incomplete",
+ "crashed_lastid",
NULL
};
const char *lfsck_param_names[] = {
+ NULL,
"failout",
"dryrun",
+ "all_targets",
+ "broadcast",
+ "orphan",
+ "create_ostobj",
+ "create_mdtobj",
+ NULL,
+ "delay_create_ostobj",
NULL
};
-static inline mdsno_t lfsck_dev_idx(struct dt_device *dev)
+enum lfsck_verify_lpf_types {
+ LVLT_BY_BOOKMARK = 0,
+ LVLT_BY_NAMEENTRY = 1,
+};
+
+static inline void
+lfsck_reset_ltd_status(struct lfsck_tgt_desc *ltd, enum lfsck_type type)
+{
+ if (type == LFSCK_TYPE_LAYOUT) {
+ ltd->ltd_layout_status = LS_MAX;
+ ltd->ltd_layout_repaired = 0;
+ } else {
+ ltd->ltd_namespace_status = LS_MAX;
+ ltd->ltd_namespace_repaired = 0;
+ }
+}
+
+static int lfsck_tgt_descs_init(struct lfsck_tgt_descs *ltds)
+{
+ spin_lock_init(<ds->ltd_lock);
+ init_rwsem(<ds->ltd_rw_sem);
+ INIT_LIST_HEAD(<ds->ltd_orphan);
+ ltds->ltd_tgts_bitmap = CFS_ALLOCATE_BITMAP(BITS_PER_LONG);
+ if (ltds->ltd_tgts_bitmap == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void lfsck_tgt_descs_fini(struct lfsck_tgt_descs *ltds)
{
- return dev->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
+ struct lfsck_tgt_desc *ltd;
+ struct lfsck_tgt_desc *next;
+ int idx;
+
+ down_write(<ds->ltd_rw_sem);
+
+ list_for_each_entry_safe(ltd, next, <ds->ltd_orphan,
+ ltd_orphan_list) {
+ list_del_init(<d->ltd_orphan_list);
+ lfsck_tgt_put(ltd);
+ }
+
+ if (unlikely(ltds->ltd_tgts_bitmap == NULL)) {
+ up_write(<ds->ltd_rw_sem);
+
+ return;
+ }
+
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_ltd2tgt(ltds, idx);
+ if (likely(ltd != NULL)) {
+ LASSERT(list_empty(<d->ltd_layout_list));
+ LASSERT(list_empty(<d->ltd_layout_phase_list));
+ LASSERT(list_empty(<d->ltd_namespace_list));
+ LASSERT(list_empty(<d->ltd_namespace_phase_list));
+
+ ltds->ltd_tgtnr--;
+ cfs_bitmap_clear(ltds->ltd_tgts_bitmap, idx);
+ lfsck_assign_tgt(ltds, NULL, idx);
+ lfsck_tgt_put(ltd);
+ }
+ }
+
+ LASSERTF(ltds->ltd_tgtnr == 0, "tgt count unmatched: %d\n",
+ ltds->ltd_tgtnr);
+
+ for (idx = 0; idx < TGT_PTRS; idx++) {
+ if (ltds->ltd_tgts_idx[idx] != NULL) {
+ OBD_FREE_PTR(ltds->ltd_tgts_idx[idx]);
+ ltds->ltd_tgts_idx[idx] = NULL;
+ }
+ }
+
+ CFS_FREE_BITMAP(ltds->ltd_tgts_bitmap);
+ ltds->ltd_tgts_bitmap = NULL;
+ up_write(<ds->ltd_rw_sem);
}
-static inline void lfsck_component_get(struct lfsck_component *com)
+static int __lfsck_add_target(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_tgt_desc *ltd,
+ bool for_ost, bool locked)
{
- atomic_inc(&com->lc_ref);
+ struct lfsck_tgt_descs *ltds;
+ __u32 index = ltd->ltd_index;
+ int rc = 0;
+ ENTRY;
+
+ if (for_ost)
+ ltds = &lfsck->li_ost_descs;
+ else
+ ltds = &lfsck->li_mdt_descs;
+
+ if (!locked)
+ down_write(<ds->ltd_rw_sem);
+
+ LASSERT(ltds->ltd_tgts_bitmap != NULL);
+
+ if (index >= ltds->ltd_tgts_bitmap->size) {
+ __u32 newsize = max((__u32)ltds->ltd_tgts_bitmap->size,
+ (__u32)BITS_PER_LONG);
+ struct cfs_bitmap *old_bitmap = ltds->ltd_tgts_bitmap;
+ struct cfs_bitmap *new_bitmap;
+
+ while (newsize < index + 1)
+ newsize <<= 1;
+
+ new_bitmap = CFS_ALLOCATE_BITMAP(newsize);
+ if (new_bitmap == NULL)
+ GOTO(unlock, rc = -ENOMEM);
+
+ if (ltds->ltd_tgtnr > 0)
+ cfs_bitmap_copy(new_bitmap, old_bitmap);
+ ltds->ltd_tgts_bitmap = new_bitmap;
+ CFS_FREE_BITMAP(old_bitmap);
+ }
+
+ if (cfs_bitmap_check(ltds->ltd_tgts_bitmap, index)) {
+ CERROR("%s: the device %s (%u) is registered already\n",
+ lfsck_lfsck2name(lfsck),
+ ltd->ltd_tgt->dd_lu_dev.ld_obd->obd_name, index);
+ GOTO(unlock, rc = -EEXIST);
+ }
+
+ if (ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK] == NULL) {
+ OBD_ALLOC_PTR(ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK]);
+ if (ltds->ltd_tgts_idx[index / TGT_PTRS_PER_BLOCK] == NULL)
+ GOTO(unlock, rc = -ENOMEM);
+ }
+
+ lfsck_assign_tgt(ltds, ltd, index);
+ cfs_bitmap_set(ltds->ltd_tgts_bitmap, index);
+ ltds->ltd_tgtnr++;
+
+ GOTO(unlock, rc = 0);
+
+unlock:
+ if (!locked)
+ up_write(<ds->ltd_rw_sem);
+
+ return rc;
}
-static inline void lfsck_component_put(const struct lu_env *env,
- struct lfsck_component *com)
+static int lfsck_add_target_from_orphan(const struct lu_env *env,
+ struct lfsck_instance *lfsck)
{
- if (atomic_dec_and_test(&com->lc_ref)) {
- if (com->lc_obj != NULL)
- lu_object_put(env, &com->lc_obj->do_lu);
- if (com->lc_file_ram != NULL)
- OBD_FREE(com->lc_file_ram, com->lc_file_size);
- if (com->lc_file_disk != NULL)
- OBD_FREE(com->lc_file_disk, com->lc_file_size);
- OBD_FREE_PTR(com);
+ struct lfsck_tgt_descs *ltds = &lfsck->li_ost_descs;
+ struct lfsck_tgt_desc *ltd;
+ struct lfsck_tgt_desc *next;
+ struct list_head *head = &lfsck_ost_orphan_list;
+ int rc;
+ bool for_ost = true;
+
+again:
+ spin_lock(&lfsck_instance_lock);
+ list_for_each_entry_safe(ltd, next, head, ltd_orphan_list) {
+ if (ltd->ltd_key == lfsck->li_bottom)
+ list_move_tail(<d->ltd_orphan_list,
+ <ds->ltd_orphan);
+ }
+ spin_unlock(&lfsck_instance_lock);
+
+ down_write(<ds->ltd_rw_sem);
+ while (!list_empty(<ds->ltd_orphan)) {
+ ltd = list_entry(ltds->ltd_orphan.next,
+ struct lfsck_tgt_desc,
+ ltd_orphan_list);
+ list_del_init(<d->ltd_orphan_list);
+ rc = __lfsck_add_target(env, lfsck, ltd, for_ost, true);
+ /* Do not hold the semaphore for too long time. */
+ up_write(<ds->ltd_rw_sem);
+ if (rc != 0)
+ return rc;
+
+ down_write(<ds->ltd_rw_sem);
}
+ up_write(<ds->ltd_rw_sem);
+
+ if (for_ost) {
+ ltds = &lfsck->li_mdt_descs;
+ head = &lfsck_mdt_orphan_list;
+ for_ost = false;
+ goto again;
+ }
+
+ return 0;
}
static inline struct lfsck_component *
-__lfsck_component_find(struct lfsck_instance *lfsck, __u16 type, cfs_list_t *list)
+__lfsck_component_find(struct lfsck_instance *lfsck, __u16 type,
+ struct list_head *list)
{
struct lfsck_component *com;
- cfs_list_for_each_entry(com, list, lc_link) {
+ list_for_each_entry(com, list, lc_link) {
if (com->lc_type == type)
return com;
}
return NULL;
}
-static struct lfsck_component *
+struct lfsck_component *
lfsck_component_find(struct lfsck_instance *lfsck, __u16 type)
{
struct lfsck_component *com;
void 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);
+ if (!list_empty(&com->lc_link))
+ list_del_init(&com->lc_link);
+ if (!list_empty(&com->lc_link_dir))
+ list_del_init(&com->lc_link_dir);
lfsck_component_put(env, com);
}
-static void lfsck_instance_cleanup(const struct lu_env *env,
- struct lfsck_instance *lfsck)
+int lfsck_fid_alloc(const struct lu_env *env, struct lfsck_instance *lfsck,
+ struct lu_fid *fid, bool locked)
{
- struct ptlrpc_thread *thread = &lfsck->li_thread;
- struct lfsck_component *com;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ int rc = 0;
ENTRY;
- LASSERT(list_empty(&lfsck->li_link));
- LASSERT(thread_is_init(thread) || thread_is_stopped(thread));
-
- if (lfsck->li_obj_oit != NULL) {
- lu_object_put(env, &lfsck->li_obj_oit->do_lu);
- lfsck->li_obj_oit = NULL;
- }
-
- LASSERT(lfsck->li_obj_dir == NULL);
-
- while (!cfs_list_empty(&lfsck->li_list_scan)) {
- com = cfs_list_entry(lfsck->li_list_scan.next,
- struct lfsck_component,
- lc_link);
- lfsck_component_cleanup(env, com);
- }
-
- LASSERT(cfs_list_empty(&lfsck->li_list_dir));
+ if (!locked)
+ mutex_lock(&lfsck->li_mutex);
- while (!cfs_list_empty(&lfsck->li_list_double_scan)) {
- com = cfs_list_entry(lfsck->li_list_double_scan.next,
- struct lfsck_component,
- lc_link);
- lfsck_component_cleanup(env, com);
+ rc = seq_client_alloc_fid(env, lfsck->li_seq, fid);
+ if (rc >= 0) {
+ bk->lb_last_fid = *fid;
+ /* We do not care about whether the subsequent sub-operations
+ * failed or not. The worst case is that one FID is lost that
+ * is not a big issue for the LFSCK since it is relative rare
+ * for LFSCK create. */
+ rc = lfsck_bookmark_store(env, lfsck);
}
- while (!cfs_list_empty(&lfsck->li_list_idle)) {
- com = cfs_list_entry(lfsck->li_list_idle.next,
- struct lfsck_component,
- lc_link);
- lfsck_component_cleanup(env, com);
- }
+ if (!locked)
+ mutex_unlock(&lfsck->li_mutex);
- if (lfsck->li_bookmark_obj != NULL) {
- lu_object_put(env, &lfsck->li_bookmark_obj->do_lu);
- lfsck->li_bookmark_obj = NULL;
- }
+ RETURN(rc);
+}
- if (lfsck->li_los != NULL) {
- local_oid_storage_fini(env, lfsck->li_los);
- lfsck->li_los = NULL;
+static int __lfsck_ibits_lock(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct dt_object *obj, struct ldlm_res_id *resid,
+ struct lustre_handle *lh, __u64 bits,
+ enum ldlm_mode mode)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ union ldlm_policy_data *policy = &info->lti_policy;
+ __u64 flags = LDLM_FL_ATOMIC_CB;
+ int rc;
+
+ LASSERT(lfsck->li_namespace != NULL);
+
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = bits;
+ if (dt_object_remote(obj)) {
+ struct ldlm_enqueue_info *einfo = &info->lti_einfo;
+
+ memset(einfo, 0, sizeof(*einfo));
+ einfo->ei_type = LDLM_IBITS;
+ einfo->ei_mode = mode;
+ einfo->ei_cb_bl = ldlm_blocking_ast;
+ einfo->ei_cb_cp = ldlm_completion_ast;
+ einfo->ei_res_id = resid;
+
+ rc = dt_object_lock(env, obj, lh, einfo, policy);
+ } else {
+ rc = ldlm_cli_enqueue_local(lfsck->li_namespace, resid,
+ LDLM_IBITS, policy, mode,
+ &flags, ldlm_blocking_ast,
+ ldlm_completion_ast, NULL, NULL,
+ 0, LVB_T_NONE, NULL, lh);
}
- if (lfsck->li_local_root != NULL) {
- lu_object_put(env, &lfsck->li_local_root->do_lu);
- lfsck->li_local_root = NULL;
+ if (rc == ELDLM_OK) {
+ rc = 0;
+ } else {
+ memset(lh, 0, sizeof(*lh));
+ rc = -EIO;
}
- OBD_FREE_PTR(lfsck);
-}
-
-static inline void lfsck_instance_get(struct lfsck_instance *lfsck)
-{
- atomic_inc(&lfsck->li_ref);
+ return rc;
}
-static inline void lfsck_instance_put(const struct lu_env *env,
- struct lfsck_instance *lfsck)
+/**
+ * Request the specified ibits lock for the given object.
+ *
+ * Before the LFSCK modifying on the namespace visible object,
+ * it needs to acquire related ibits ldlm lock.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ * \param[in] obj pointer to the dt_object to be locked
+ * \param[out] lh pointer to the lock handle
+ * \param[in] bits the bits for the ldlm lock to be acquired
+ * \param[in] mode the mode for the ldlm lock to be acquired
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int lfsck_ibits_lock(const struct lu_env *env, struct lfsck_instance *lfsck,
+ struct dt_object *obj, struct lustre_handle *lh,
+ __u64 bits, enum ldlm_mode mode)
{
- if (atomic_dec_and_test(&lfsck->li_ref))
- lfsck_instance_cleanup(env, lfsck);
-}
+ struct ldlm_res_id *resid = &lfsck_env_info(env)->lti_resid;
-static inline struct lfsck_instance *lfsck_instance_find(struct dt_device *key,
- bool ref, bool unlink)
-{
- struct lfsck_instance *lfsck;
+ LASSERT(!lustre_handle_is_used(lh));
- spin_lock(&lfsck_instance_lock);
- cfs_list_for_each_entry(lfsck, &lfsck_instance_list, li_link) {
- if (lfsck->li_bottom == key) {
- if (ref)
- lfsck_instance_get(lfsck);
- if (unlink)
- list_del_init(&lfsck->li_link);
- spin_unlock(&lfsck_instance_lock);
- return lfsck;
- }
- }
- spin_unlock(&lfsck_instance_lock);
- return NULL;
+ fid_build_reg_res_name(lfsck_dto2fid(obj), resid);
+ return __lfsck_ibits_lock(env, lfsck, obj, resid, lh, bits, mode);
}
-static inline int lfsck_instance_add(struct lfsck_instance *lfsck)
+/**
+ * Release the the specified ibits lock.
+ *
+ * If the lock has been acquired before, release it
+ * and cleanup the handle. Otherwise, do nothing.
+ *
+ * \param[in] lh pointer to the lock handle
+ * \param[in] mode the mode for the ldlm lock to be released
+ */
+void lfsck_ibits_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
{
- struct lfsck_instance *tmp;
-
- spin_lock(&lfsck_instance_lock);
- cfs_list_for_each_entry(tmp, &lfsck_instance_list, li_link) {
- if (lfsck->li_bottom == tmp->li_bottom) {
- spin_unlock(&lfsck_instance_lock);
- return -EEXIST;
- }
+ if (lustre_handle_is_used(lh)) {
+ ldlm_lock_decref(lh, mode);
+ memset(lh, 0, sizeof(*lh));
}
-
- cfs_list_add_tail(&lfsck->li_link, &lfsck_instance_list);
- spin_unlock(&lfsck_instance_lock);
- return 0;
}
-int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
- const char *prefix)
+/**
+ * Request compound ibits locks for the given <obj, name> pairs.
+ *
+ * Before the LFSCK modifying on the namespace visible object, it needs to
+ * acquire related ibits ldlm lock. Usually, we can use lfsck_ibits_lock for
+ * the lock purpose. But the simple lfsck_ibits_lock for directory-based
+ * modificationis (such as insert name entry to the directory) may be too
+ * coarse-grained and not efficient.
+ *
+ * The lfsck_lock() will request compound ibits locks on the specified
+ * <obj, name> pairs: the PDO (Parallel Directory Operations) ibits (UPDATE)
+ * lock on the directory object, and the regular ibits lock on the name hash.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ * \param[in] obj pointer to the dt_object to be locked
+ * \param[in] name used for building the PDO lock resource
+ * \param[out] llh pointer to the lfsck_lock_handle
+ * \param[in] bits the bits for the ldlm lock to be acquired
+ * \param[in] mode the mode for the ldlm lock to be acquired
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int lfsck_lock(const struct lu_env *env, struct lfsck_instance *lfsck,
+ struct dt_object *obj, const char *name,
+ struct lfsck_lock_handle *llh, __u64 bits, enum ldlm_mode mode)
{
- int save = *len;
- int flag;
- int rc;
- int i;
+ struct ldlm_res_id *resid = &lfsck_env_info(env)->lti_resid;
+ int rc;
+
+ LASSERT(S_ISDIR(lfsck_object_type(obj)));
+ LASSERT(name != NULL);
+ LASSERT(name[0] != 0);
+ LASSERT(!lustre_handle_is_used(&llh->llh_pdo_lh));
+ LASSERT(!lustre_handle_is_used(&llh->llh_reg_lh));
+
+ switch (mode) {
+ case LCK_EX:
+ llh->llh_pdo_mode = LCK_EX;
+ break;
+ case LCK_PW:
+ llh->llh_pdo_mode = LCK_CW;
+ break;
+ case LCK_PR:
+ llh->llh_pdo_mode = LCK_CR;
+ break;
+ default:
+ CDEBUG(D_LFSCK, "%s: unexpected PDO lock mode %u on the obj "
+ DFID"\n", lfsck_lfsck2name(lfsck), mode,
+ PFID(lfsck_dto2fid(obj)));
+ LBUG();
+ }
- rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
- if (rc <= 0)
- return -ENOSPC;
+ fid_build_reg_res_name(lfsck_dto2fid(obj), resid);
+ rc = __lfsck_ibits_lock(env, lfsck, obj, resid, &llh->llh_pdo_lh,
+ MDS_INODELOCK_UPDATE, llh->llh_pdo_mode);
+ if (rc != 0)
+ return rc;
- *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;
+ llh->llh_reg_mode = mode;
+ resid->name[LUSTRE_RES_ID_HSH_OFF] = full_name_hash(name, strlen(name));
+ LASSERT(resid->name[LUSTRE_RES_ID_HSH_OFF] != 0);
+ rc = __lfsck_ibits_lock(env, lfsck, obj, resid, &llh->llh_reg_lh,
+ bits, llh->llh_reg_mode);
+ if (rc != 0)
+ lfsck_ibits_unlock(&llh->llh_pdo_lh, llh->llh_pdo_mode);
- *buf += rc;
- *len -= rc;
- }
- }
- return save - *len;
+ return rc;
}
-int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix)
+/**
+ * Release the the compound ibits locks.
+ *
+ * \param[in] llh pointer to the lfsck_lock_handle to be released
+ */
+void lfsck_unlock(struct lfsck_lock_handle *llh)
{
- 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;
+ lfsck_ibits_unlock(&llh->llh_reg_lh, llh->llh_reg_mode);
+ lfsck_ibits_unlock(&llh->llh_pdo_lh, llh->llh_pdo_mode);
}
-int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
- const char *prefix)
+int lfsck_find_mdt_idx_by_fid(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ const struct lu_fid *fid)
{
- int rc;
+ struct seq_server_site *ss = lfsck_dev_site(lfsck);
+ struct lu_seq_range *range = &lfsck_env_info(env)->lti_range;
+ 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 (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE)) {
+ /* "ROOT" is always on the MDT0. */
+ if (lu_fid_eq(fid, &lfsck->li_global_root_fid))
+ return 0;
+
+ return lfsck_dev_idx(lfsck);
}
- if (rc <= 0)
- return -ENOSPC;
- *buf += rc;
- *len -= rc;
+ fld_range_set_mdt(range);
+ rc = fld_server_lookup(env, ss->ss_server_fld, fid_seq(fid), range);
+ if (rc == 0)
+ rc = range->lsr_index;
+
return rc;
}
-void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
- struct lfsck_position *pos, bool init)
+const char dot[] = ".";
+const char dotdot[] = "..";
+static const char dotlustre[] = ".lustre";
+static const char lostfound[] = "lost+found";
+
+/**
+ * Remove the name entry from the .lustre/lost+found directory.
+ *
+ * No need to care about the object referenced by the name entry,
+ * either the name entry is invalid or redundant, or the referenced
+ * object has been processed or will be handled by others.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ * \param[in] name the name for the name entry to be removed
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int lfsck_lpf_remove_name_entry(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ const char *name)
{
- const struct dt_it_ops *iops = &lfsck->li_obj_oit->do_index_ops->dio_it;
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct dt_device *dev = lfsck_obj2dev(parent);
+ struct thandle *th;
+ struct lfsck_lock_handle *llh = &lfsck_env_info(env)->lti_llh;
+ int rc;
+ ENTRY;
- if (unlikely(lfsck->li_di_oit == NULL)) {
- memset(pos, 0, sizeof(*pos));
- return;
- }
+ rc = lfsck_lock(env, lfsck, parent, name, llh,
+ MDS_INODELOCK_UPDATE, LCK_PW);
+ if (rc != 0)
+ RETURN(rc);
- pos->lp_oit_cookie = iops->store(env, lfsck->li_di_oit);
- if (!lfsck->li_current_oit_processed && !init)
- pos->lp_oit_cookie--;
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ GOTO(unlock, rc = PTR_ERR(th));
- LASSERT(pos->lp_oit_cookie > 0);
+ rc = dt_declare_delete(env, parent, (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- if (lfsck->li_di_dir != NULL) {
- struct dt_object *dto = lfsck->li_obj_dir;
+ rc = dt_declare_ref_del(env, parent, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
- lfsck->li_di_dir);
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- 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;
- }
-}
+ rc = dt_delete(env, parent, (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
-static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
-{
- lfsck->li_bookmark_ram.lb_speed_limit = limit;
- if (limit != LFSCK_SPEED_NO_LIMIT) {
- if (limit > CFS_HZ) {
- lfsck->li_sleep_rate = limit / CFS_HZ;
- lfsck->li_sleep_jif = 1;
- } else {
- lfsck->li_sleep_rate = 1;
- lfsck->li_sleep_jif = CFS_HZ / limit;
- }
- } else {
- lfsck->li_sleep_jif = 0;
- lfsck->li_sleep_rate = 0;
- }
-}
+ dt_write_lock(env, parent, 0);
+ rc = dt_ref_del(env, parent, th);
+ dt_write_unlock(env, parent);
-void lfsck_control_speed(struct lfsck_instance *lfsck)
-{
- struct ptlrpc_thread *thread = &lfsck->li_thread;
- struct l_wait_info lwi;
+ GOTO(stop, rc);
- if (lfsck->li_sleep_jif > 0 &&
- lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
- spin_lock(&lfsck->li_lock);
- if (likely(lfsck->li_sleep_jif > 0 &&
- lfsck->li_new_scanned >= lfsck->li_sleep_rate)) {
- lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
- LWI_ON_SIGNAL_NOOP, NULL);
- spin_unlock(&lfsck->li_lock);
+stop:
+ dt_trans_stop(env, dev, th);
- l_wait_event(thread->t_ctl_waitq,
- !thread_is_running(thread),
- &lwi);
- lfsck->li_new_scanned = 0;
- } else {
- spin_unlock(&lfsck->li_lock);
- }
- }
-}
+unlock:
+ lfsck_unlock(llh);
-static int lfsck_parent_fid(const struct lu_env *env, struct dt_object *obj,
- struct lu_fid *fid)
-{
- if (unlikely(!S_ISDIR(lfsck_object_type(obj)) ||
- !dt_try_as_dir(env, obj)))
- return -ENOTDIR;
+ CDEBUG(D_LFSCK, "%s: remove name entry "DFID"/%s: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(lfsck_dto2fid(parent)), name, rc);
- return dt_lookup(env, obj, (struct dt_rec *)fid,
- (const struct dt_key *)"..", BYPASS_CAPA);
+ return rc;
}
-static int lfsck_needs_scan_dir(const struct lu_env *env,
- struct lfsck_instance *lfsck,
- struct dt_object *obj)
+static int lfsck_create_lpf_local(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct dt_object *child,
+ struct lu_attr *la,
+ struct dt_object_format *dof,
+ const char *name)
{
- struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
- int depth = 0;
- int rc;
+ struct dt_insert_rec *rec = &lfsck_env_info(env)->lti_dt_rec;
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct dt_device *dev = lfsck_obj2dev(child);
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct dt_object *bk_obj = lfsck->li_bookmark_obj;
+ const struct lu_fid *cfid = lfsck_dto2fid(child);
+ struct thandle *th = NULL;
+ struct linkea_data ldata = { NULL };
+ struct lu_buf linkea_buf;
+ const struct lu_name *cname;
+ loff_t pos = 0;
+ int len = sizeof(struct lfsck_bookmark);
+ int rc;
+ ENTRY;
- if (!lfsck->li_master || !S_ISDIR(lfsck_object_type(obj)) ||
- cfs_list_empty(&lfsck->li_list_dir))
- RETURN(0);
+ cname = lfsck_name_get_const(env, name, strlen(name));
+ rc = linkea_links_new(&ldata, &lfsck_env_info(env)->lti_linkea_buf2,
+ cname, lfsck_dto2fid(parent));
+ if (rc != 0)
+ RETURN(rc);
- while (1) {
- /* XXX: Currently, we do not scan the "/REMOTE_PARENT_DIR",
- * which is the agent directory to manage the objects
- * which name entries reside on remote MDTs. Related
- * consistency verification will be processed in LFSCK
- * phase III. */
- if (lu_fid_eq(lfsck_dto2fid(obj), &lfsck->li_global_root_fid)) {
- if (depth > 0)
- lfsck_object_put(env, obj);
- return 1;
- }
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
- /* .lustre doesn't contain "real" user objects, no need lfsck */
- if (fid_is_dot_lustre(lfsck_dto2fid(obj))) {
- if (depth > 0)
- lfsck_object_put(env, obj);
- return 0;
- }
+ /* 1a. create child */
+ rc = dt_declare_create(env, child, la, NULL, dof, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- dt_read_lock(env, obj, MOR_TGT_CHILD);
- if (unlikely(lfsck_is_dead_obj(obj))) {
- dt_read_unlock(env, obj);
- if (depth > 0)
- lfsck_object_put(env, obj);
- return 0;
- }
+ if (!dt_try_as_dir(env, child))
+ GOTO(stop, rc = -ENOTDIR);
- rc = dt_xattr_get(env, obj,
- lfsck_buf_get(env, NULL, 0), XATTR_NAME_LINK,
- BYPASS_CAPA);
- dt_read_unlock(env, obj);
- if (rc >= 0) {
- if (depth > 0)
- lfsck_object_put(env, obj);
- return 1;
- }
+ /* 2a. increase child nlink */
+ rc = dt_declare_ref_add(env, child, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- if (rc < 0 && rc != -ENODATA) {
- if (depth > 0)
- lfsck_object_put(env, obj);
- return rc;
- }
+ /* 3a. insert dot into child dir */
+ rec->rec_type = S_IFDIR;
+ rec->rec_fid = cfid;
+ rc = dt_declare_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- rc = lfsck_parent_fid(env, obj, fid);
- if (depth > 0)
- lfsck_object_put(env, obj);
- if (rc != 0)
- return rc;
+ /* 4a. insert dotdot into child dir */
+ rec->rec_fid = &LU_LPF_FID;
+ rc = dt_declare_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- if (unlikely(lu_fid_eq(fid,
- lfsck_dto2fid(lfsck->li_local_root))))
- return 0;
+ /* 5a. insert linkEA for child */
+ lfsck_buf_init(&linkea_buf, ldata.ld_buf->lb_buf,
+ ldata.ld_leh->leh_len);
+ rc = dt_declare_xattr_set(env, child, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
- obj = lfsck_object_find(env, lfsck, fid);
- if (obj == NULL)
- return 0;
- else if (IS_ERR(obj))
- return PTR_ERR(obj);
+ /* 6a. insert name into parent dir */
+ rec->rec_type = S_IFDIR;
+ rec->rec_fid = cfid;
+ rc = dt_declare_insert(env, parent, (const struct dt_rec *)rec,
+ (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 7a. increase parent nlink */
+ rc = dt_declare_ref_add(env, parent, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 8a. update bookmark */
+ rc = dt_declare_record_write(env, bk_obj,
+ lfsck_buf_get(env, bk, len), 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, child, 0);
+ /* 1b. create child */
+ rc = dt_create(env, child, la, NULL, dof, th);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 2b. increase child nlink */
+ rc = dt_ref_add(env, child, th);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 3b. insert dot into child dir */
+ rec->rec_fid = cfid;
+ rc = dt_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th, 1);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 4b. insert dotdot into child dir */
+ rec->rec_fid = &LU_LPF_FID;
+ rc = dt_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th, 1);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 5b. insert linkEA for child. */
+ rc = dt_xattr_set(env, child, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ dt_write_unlock(env, child);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 6b. insert name into parent dir */
+ rec->rec_fid = cfid;
+ rc = dt_insert(env, parent, (const struct dt_rec *)rec,
+ (const struct dt_key *)name, th, 1);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, parent, 0);
+ /* 7b. increase parent nlink */
+ rc = dt_ref_add(env, parent, th);
+ dt_write_unlock(env, parent);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ bk->lb_lpf_fid = *cfid;
+ lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk, bk);
+
+ /* 8b. update bookmark */
+ rc = dt_record_write(env, bk_obj,
+ lfsck_buf_get(env, bk, len), &pos, th);
+
+ GOTO(stop, rc);
+
+unlock:
+ dt_write_unlock(env, child);
+
+stop:
+ dt_trans_stop(env, dev, th);
+
+ return rc;
+}
+
+static int lfsck_create_lpf_remote(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct dt_object *child,
+ struct lu_attr *la,
+ struct dt_object_format *dof,
+ const char *name)
+{
+ struct dt_insert_rec *rec = &lfsck_env_info(env)->lti_dt_rec;
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct dt_object *bk_obj = lfsck->li_bookmark_obj;
+ const struct lu_fid *cfid = lfsck_dto2fid(child);
+ struct thandle *th = NULL;
+ struct linkea_data ldata = { NULL };
+ struct lu_buf linkea_buf;
+ const struct lu_name *cname;
+ struct dt_device *dev;
+ loff_t pos = 0;
+ int len = sizeof(struct lfsck_bookmark);
+ int rc;
+ ENTRY;
+
+ cname = lfsck_name_get_const(env, name, strlen(name));
+ rc = linkea_links_new(&ldata, &lfsck_env_info(env)->lti_linkea_buf2,
+ cname, lfsck_dto2fid(parent));
+ if (rc != 0)
+ RETURN(rc);
+
+ /* Create .lustre/lost+found/MDTxxxx. */
+
+ /* XXX: Currently, cross-MDT create operation needs to create the child
+ * object firstly, then insert name into the parent directory. For
+ * this case, the child object resides on current MDT (local), but
+ * the parent ".lustre/lost+found" may be on remote MDT. It is not
+ * easy to contain all the sub-modifications orderly within single
+ * transaction.
+ *
+ * To avoid more inconsistency, we split the create operation into
+ * two transactions:
+ *
+ * 1) create the child and update the lfsck_bookmark::lb_lpf_fid
+ * locally.
+ * 2) insert the name "MDTXXXX" in the parent ".lustre/lost+found"
+ * remotely.
+ *
+ * If 1) done, but 2) failed, then go ahead, the LFSCK will try to
+ * repair such inconsistency when LFSCK run next time. */
+
+ /* Transaction I: locally */
+
+ dev = lfsck_obj2dev(child);
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ /* 1a. create child */
+ rc = dt_declare_create(env, child, la, NULL, dof, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ if (!dt_try_as_dir(env, child))
+ GOTO(stop, rc = -ENOTDIR);
+
+ /* 2a. increase child nlink */
+ rc = dt_declare_ref_add(env, child, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 3a. insert dot into child dir */
+ rec->rec_type = S_IFDIR;
+ rec->rec_fid = cfid;
+ rc = dt_declare_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 4a. insert dotdot into child dir */
+ rec->rec_fid = &LU_LPF_FID;
+ rc = dt_declare_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 5a. insert linkEA for child */
+ lfsck_buf_init(&linkea_buf, ldata.ld_buf->lb_buf,
+ ldata.ld_leh->leh_len);
+ rc = dt_declare_xattr_set(env, child, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 6a. update bookmark */
+ rc = dt_declare_record_write(env, bk_obj,
+ lfsck_buf_get(env, bk, len), 0, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, child, 0);
+ /* 1b. create child */
+ rc = dt_create(env, child, la, NULL, dof, th);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 2b. increase child nlink */
+ rc = dt_ref_add(env, child, th);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 3b. insert dot into child dir */
+ rec->rec_type = S_IFDIR;
+ rec->rec_fid = cfid;
+ rc = dt_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dot, th, 1);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 4b. insert dotdot into child dir */
+ rec->rec_fid = &LU_LPF_FID;
+ rc = dt_insert(env, child, (const struct dt_rec *)rec,
+ (const struct dt_key *)dotdot, th, 1);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ /* 5b. insert linkEA for child */
+ rc = dt_xattr_set(env, child, &linkea_buf,
+ XATTR_NAME_LINK, 0, th);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ bk->lb_lpf_fid = *cfid;
+ lfsck_bookmark_cpu_to_le(&lfsck->li_bookmark_disk, bk);
+
+ /* 6b. update bookmark */
+ rc = dt_record_write(env, bk_obj,
+ lfsck_buf_get(env, bk, len), &pos, th);
+
+ dt_write_unlock(env, child);
+ dt_trans_stop(env, dev, th);
+ if (rc != 0)
+ RETURN(rc);
+
+ /* Transaction II: remotely */
+
+ dev = lfsck_obj2dev(parent);
+ th = dt_trans_create(env, dev);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ th->th_sync = 1;
+ /* 5a. insert name into parent dir */
+ rec->rec_fid = cfid;
+ rc = dt_declare_insert(env, parent, (const struct dt_rec *)rec,
+ (const struct dt_key *)name, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 6a. increase parent nlink */
+ rc = dt_declare_ref_add(env, parent, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dev, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ /* 5b. insert name into parent dir */
+ rc = dt_insert(env, parent, (const struct dt_rec *)rec,
+ (const struct dt_key *)name, th, 1);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, parent, 0);
+ /* 6b. increase parent nlink */
+ rc = dt_ref_add(env, parent, th);
+ dt_write_unlock(env, parent);
+
+ GOTO(stop, rc);
+
+unlock:
+ dt_write_unlock(env, child);
+stop:
+ dt_trans_stop(env, dev, th);
+
+ if (rc != 0 && dev == lfsck_obj2dev(parent))
+ CDEBUG(D_LFSCK, "%s: partially created the object "DFID
+ "for orphans, but failed to insert the name %s "
+ "to the .lustre/lost+found/. Such inconsistency "
+ "will be repaired when LFSCK run next time: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(cfid), name, rc);
+
+ return rc;
+}
+
+/**
+ * Create the MDTxxxx directory under /ROOT/.lustre/lost+found/
+ *
+ * The /ROOT/.lustre/lost+found/MDTxxxx/ directory is used for holding
+ * orphans and other uncertain inconsistent objects found during the
+ * LFSCK. Such directory will be created by the LFSCK engine on the
+ * local MDT before the LFSCK scanning.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int lfsck_create_lpf(const struct lu_env *env,
+ struct lfsck_instance *lfsck)
+{
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_fid *cfid = &info->lti_fid2;
+ struct lu_attr *la = &info->lti_la;
+ struct dt_object_format *dof = &info->lti_dof;
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct dt_object *child = NULL;
+ struct lfsck_lock_handle *llh = &info->lti_llh;
+ char name[8];
+ int node = lfsck_dev_idx(lfsck);
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(lfsck->li_master);
+ LASSERT(parent != NULL);
+ LASSERT(lfsck->li_lpf_obj == NULL);
+
+ snprintf(name, 8, "MDT%04x", node);
+ rc = lfsck_lock(env, lfsck, parent, name, llh,
+ MDS_INODELOCK_UPDATE, LCK_PW);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (fid_is_zero(&bk->lb_lpf_fid)) {
+ /* There is corner case that: in former LFSCK scanning we have
+ * created the .lustre/lost+found/MDTxxxx but failed to update
+ * the lfsck_bookmark::lb_lpf_fid successfully. So need lookup
+ * it from MDT0 firstly. */
+ rc = dt_lookup(env, parent, (struct dt_rec *)cfid,
+ (const struct dt_key *)name);
+ if (rc != 0 && rc != -ENOENT)
+ GOTO(unlock, rc);
+
+ if (rc == 0) {
+ bk->lb_lpf_fid = *cfid;
+ rc = lfsck_bookmark_store(env, lfsck);
+ } else {
+ rc = lfsck_fid_alloc(env, lfsck, cfid, true);
+ }
+ if (rc != 0)
+ GOTO(unlock, rc);
+ } else {
+ *cfid = bk->lb_lpf_fid;
+ }
+
+ child = lfsck_object_find_bottom_new(env, lfsck, cfid);
+ if (IS_ERR(child))
+ GOTO(unlock, rc = PTR_ERR(child));
+
+ if (dt_object_exists(child) != 0) {
+ if (unlikely(!dt_try_as_dir(env, child)))
+ rc = -ENOTDIR;
+ else
+ lfsck->li_lpf_obj = child;
+
+ GOTO(unlock, rc);
+ }
+
+ memset(la, 0, sizeof(*la));
+ la->la_atime = la->la_mtime = la->la_ctime = cfs_time_current_sec();
+ la->la_mode = S_IFDIR | S_IRWXU;
+ la->la_valid = LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE |
+ LA_UID | LA_GID;
+ memset(dof, 0, sizeof(*dof));
+ dof->dof_type = dt_mode_to_dft(S_IFDIR);
+
+ if (node == 0)
+ rc = lfsck_create_lpf_local(env, lfsck, child, la, dof, name);
+ else
+ rc = lfsck_create_lpf_remote(env, lfsck, child, la, dof, name);
+ if (rc == 0)
+ lfsck->li_lpf_obj = child;
+
+ GOTO(unlock, rc);
+
+unlock:
+ lfsck_unlock(llh);
+ if (rc != 0 && child != NULL && !IS_ERR(child))
+ lfsck_object_put(env, child);
+
+ return rc;
+}
+
+/**
+ * Scan .lustre/lost+found for bad name entries and remove them.
+ *
+ * The valid name entry should be "MDTxxxx", the "xxxx" is the MDT device
+ * index in the system. Any other formatted name is invalid and should be
+ * removed.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int lfsck_scan_lpf_bad_entries(const struct lu_env *env,
+ struct lfsck_instance *lfsck)
+{
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct lu_dirent *ent =
+ (struct lu_dirent *)lfsck_env_info(env)->lti_key;
+ const struct dt_it_ops *iops = &parent->do_index_ops->dio_it;
+ struct dt_it *it;
+ int rc;
+ ENTRY;
+
+ it = iops->init(env, parent, LUDA_64BITHASH);
+ if (IS_ERR(it))
+ RETURN(PTR_ERR(it));
+
+ rc = iops->load(env, it, 0);
+ if (rc == 0)
+ rc = iops->next(env, it);
+ else if (rc > 0)
+ rc = 0;
+
+ while (rc == 0) {
+ int off = 3;
+
+ rc = iops->rec(env, it, (struct dt_rec *)ent, LUDA_64BITHASH);
+ if (rc != 0)
+ break;
+
+ ent->lde_namelen = le16_to_cpu(ent->lde_namelen);
+ if (name_is_dot_or_dotdot(ent->lde_name, ent->lde_namelen))
+ goto next;
+
+ /* name length must be strlen("MDTxxxx") */
+ if (ent->lde_namelen != 7)
+ goto remove;
+
+ if (memcmp(ent->lde_name, "MDT", off) != 0)
+ goto remove;
+
+ while (off < 7 && isxdigit(ent->lde_name[off]))
+ off++;
+
+ if (off != 7) {
+
+remove:
+ rc = lfsck_lpf_remove_name_entry(env, lfsck,
+ ent->lde_name);
+ if (rc != 0)
+ break;
+ }
+
+next:
+ rc = iops->next(env, it);
+ }
+
+ iops->put(env, it);
+ iops->fini(env, it);
+
+ RETURN(rc > 0 ? 0 : rc);
+}
+
+static int lfsck_update_lpf_entry(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct dt_object *parent,
+ struct dt_object *child,
+ const char *name,
+ enum lfsck_verify_lpf_types type)
+{
+ int rc;
+
+ if (type == LVLT_BY_BOOKMARK) {
+ rc = lfsck_update_name_entry(env, lfsck, parent, name,
+ lfsck_dto2fid(child), S_IFDIR);
+ } else /* if (type == LVLT_BY_NAMEENTRY) */ {
+ lfsck->li_bookmark_ram.lb_lpf_fid = *lfsck_dto2fid(child);
+ rc = lfsck_bookmark_store(env, lfsck);
+
+ CDEBUG(D_LFSCK, "%s: update LPF fid "DFID
+ " in the bookmark file: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
+ PFID(lfsck_dto2fid(child)), rc);
+ }
+
+ return rc;
+}
+
+/**
+ * Check whether the @child back references the @parent.
+ *
+ * Two cases:
+ * 1) The child's FID is stored in the bookmark file. If the child back
+ * references the parent (LU_LPF_FID object) via its ".." entry, then
+ * insert the name (MDTxxxx) to the .lustre/lost+found; otherwise, if
+ * the child back references another parent2, then:
+ * 1.1) If the parent2 recognizes the child, then update the bookmark file;
+ * 1.2) Otherwise, the LFSCK cannot know whether there will be parent3 that
+ * references the child. So keep them there. As the LFSCK processing,
+ * the parent3 may be found, then when the LFSCK run next time, the
+ * inconsistency can be repaired.
+ *
+ * 2) The child's FID is stored in the .lustre/lost+found/ sub-directory name
+ * entry (MDTxxxx). If the child back references the parent (LU_LPF_FID obj)
+ * via its ".." entry, then update the bookmark file, otherwise, if the child
+ * back references another parent2, then:
+ * 2.1) If the parent2 recognizes the child, then remove the sub-directory
+ * from .lustre/lost+found/;
+ * 2.2) Otherwise, if the parent2 does not recognizes the child, trust the
+ * sub-directory name entry and update the child;
+ * 2.3) Otherwise, if we do not know whether the parent2 recognizes the child
+ * or not, then keep them there.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ * \param[in] child pointer to the lost+found sub-directory object
+ * \param[in] name the name for lost+found sub-directory object
+ * \param[out] fid pointer to the buffer to hold the FID of the object
+ * (called it as parent2) that is referenced via the
+ * child's dotdot entry; it also can be the FID that
+ * is referenced by the name entry under the parent2.
+ * \param[in] type to indicate where the child's FID is stored in
+ *
+ * \retval positive number for uncertain inconsistency
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int lfsck_verify_lpf_pairs(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct dt_object *child, const char *name,
+ struct lu_fid *fid,
+ enum lfsck_verify_lpf_types type)
+{
+ struct dt_object *parent = lfsck->li_lpf_root_obj;
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ char *name2 = info->lti_key;
+ struct lu_fid *fid2 = &info->lti_fid3;
+ struct dt_object *parent2 = NULL;
+ struct lustre_handle lh = { 0 };
+ int rc;
+ ENTRY;
+
+ fid_zero(fid);
+ rc = dt_lookup(env, child, (struct dt_rec *)fid,
+ (const struct dt_key *)dotdot);
+ if (rc != 0)
+ GOTO(linkea, rc);
+
+ if (!fid_is_sane(fid))
+ GOTO(linkea, rc = -EINVAL);
+
+ if (lu_fid_eq(fid, &LU_LPF_FID)) {
+ const struct lu_name *cname;
+
+ if (lfsck->li_lpf_obj == NULL) {
+ lu_object_get(&child->do_lu);
+ lfsck->li_lpf_obj = child;
+ }
+
+ cname = lfsck_name_get_const(env, name, strlen(name));
+ rc = lfsck_verify_linkea(env, child, cname, &LU_LPF_FID);
+ if (rc == 0)
+ rc = lfsck_update_lpf_entry(env, lfsck, parent, child,
+ name, type);
+
+ GOTO(out_done, rc);
+ }
+
+ parent2 = lfsck_object_find_bottom(env, lfsck, fid);
+ if (IS_ERR(parent2))
+ GOTO(linkea, parent2);
+
+ if (!dt_object_exists(parent2)) {
+ lfsck_object_put(env, parent2);
+
+ GOTO(linkea, parent2 = ERR_PTR(-ENOENT));
+ }
+
+ if (!dt_try_as_dir(env, parent2)) {
+ lfsck_object_put(env, parent2);
+
+ GOTO(linkea, parent2 = ERR_PTR(-ENOTDIR));
+ }
+
+linkea:
+ /* To prevent rename/unlink race */
+ rc = lfsck_ibits_lock(env, lfsck, child, &lh,
+ MDS_INODELOCK_UPDATE, LCK_PR);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ dt_read_lock(env, child, 0);
+ rc = lfsck_links_get_first(env, child, name2, fid2);
+ if (rc != 0) {
+ dt_read_unlock(env, child);
+ lfsck_ibits_unlock(&lh, LCK_PR);
+
+ GOTO(out_put, rc = 1);
+ }
+
+ /* It is almost impossible that the bookmark file (or the name entry)
+ * and the linkEA hit the same data corruption. Trust the linkEA. */
+ if (lu_fid_eq(fid2, &LU_LPF_FID) && strcmp(name, name2) == 0) {
+ dt_read_unlock(env, child);
+ lfsck_ibits_unlock(&lh, LCK_PR);
+
+ *fid = *fid2;
+ if (lfsck->li_lpf_obj == NULL) {
+ lu_object_get(&child->do_lu);
+ lfsck->li_lpf_obj = child;
+ }
+
+ /* Update the child's dotdot entry */
+ rc = lfsck_update_name_entry(env, lfsck, child, dotdot,
+ &LU_LPF_FID, S_IFDIR);
+ if (rc == 0)
+ rc = lfsck_update_lpf_entry(env, lfsck, parent, child,
+ name, type);
+
+ GOTO(out_put, rc);
+ }
+
+ if (parent2 == NULL || IS_ERR(parent2)) {
+ dt_read_unlock(env, child);
+ lfsck_ibits_unlock(&lh, LCK_PR);
+
+ GOTO(out_done, rc = 1);
+ }
+
+ rc = dt_lookup(env, parent2, (struct dt_rec *)fid,
+ (const struct dt_key *)name2);
+ dt_read_unlock(env, child);
+ lfsck_ibits_unlock(&lh, LCK_PR);
+ if (rc != 0 && rc != -ENOENT)
+ GOTO(out_put, rc);
+
+ if (rc == -ENOENT || !lu_fid_eq(fid, lfsck_dto2fid(child))) {
+ if (type == LVLT_BY_BOOKMARK)
+ GOTO(out_put, rc = 1);
+
+ /* Trust the name entry, update the child's dotdot entry. */
+ rc = lfsck_update_name_entry(env, lfsck, child, dotdot,
+ &LU_LPF_FID, S_IFDIR);
+
+ GOTO(out_put, rc);
+ }
+
+ if (type == LVLT_BY_BOOKMARK) {
+ /* Invalid FID record in the bookmark file, reset it. */
+ fid_zero(&lfsck->li_bookmark_ram.lb_lpf_fid);
+ rc = lfsck_bookmark_store(env, lfsck);
+
+ CDEBUG(D_LFSCK, "%s: reset invalid LPF fid "DFID
+ " in the bookmark file: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(lfsck_dto2fid(child)), rc);
+ } else /* if (type == LVLT_BY_NAMEENTRY) */ {
+ /* The name entry is wrong, remove it. */
+ rc = lfsck_lpf_remove_name_entry(env, lfsck, name);
+ }
+
+ GOTO(out_put, rc);
+
+out_put:
+ if (parent2 != NULL && !IS_ERR(parent2))
+ lfsck_object_put(env, parent2);
+
+out_done:
+ return rc;
+}
+
+/**
+ * Verify the /ROOT/.lustre/lost+found/ directory.
+ *
+ * /ROOT/.lustre/lost+found/ is a special directory to hold the objects that
+ * the LFSCK does not exactly know how to handle, such as orphans. So before
+ * the LFSCK scanning the system, the consistency of such directory needs to
+ * be verified firstly to allow the users to use it during the LFSCK.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] lfsck pointer to the lfsck instance
+ *
+ * \retval positive number for uncertain inconsistency
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int lfsck_verify_lpf(const struct lu_env *env, struct lfsck_instance *lfsck)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lu_fid *pfid = &info->lti_fid;
+ struct lu_fid *cfid = &info->lti_fid2;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct dt_object *parent;
+ /* child1's FID is in the bookmark file. */
+ struct dt_object *child1 = NULL;
+ /* child2's FID is in the name entry MDTxxxx. */
+ struct dt_object *child2 = NULL;
+ const struct lu_name *cname;
+ char name[8];
+ int node = lfsck_dev_idx(lfsck);
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(lfsck->li_master);
+
+ if (lfsck->li_lpf_root_obj != NULL)
+ RETURN(0);
+
+ if (node == 0) {
+ parent = lfsck_object_find_by_dev(env, lfsck->li_bottom,
+ &LU_LPF_FID);
+ } else {
+ struct lfsck_tgt_desc *ltd;
+
+ ltd = lfsck_tgt_get(&lfsck->li_mdt_descs, 0);
+ if (unlikely(ltd == NULL))
+ RETURN(-ENXIO);
+
+ parent = lfsck_object_find_by_dev(env, ltd->ltd_tgt,
+ &LU_LPF_FID);
+ lfsck_tgt_put(ltd);
+ }
+
+ if (IS_ERR(parent))
+ RETURN(PTR_ERR(parent));
+
+ LASSERT(dt_object_exists(parent));
+
+ if (unlikely(!dt_try_as_dir(env, parent))) {
+ lfsck_object_put(env, parent);
+
+ GOTO(put, rc = -ENOTDIR);
+ }
+
+ lfsck->li_lpf_root_obj = parent;
+ if (node == 0) {
+ rc = lfsck_scan_lpf_bad_entries(env, lfsck);
+ if (rc != 0)
+ CDEBUG(D_LFSCK, "%s: scan .lustre/lost+found/ "
+ "for bad sub-directories: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+ }
+
+ /* child2 */
+ snprintf(name, 8, "MDT%04x", node);
+ rc = dt_lookup(env, parent, (struct dt_rec *)cfid,
+ (const struct dt_key *)name);
+ if (rc == -ENOENT) {
+ rc = 0;
+ goto find_child1;
+ }
+
+ if (rc != 0)
+ GOTO(put, rc);
+
+ /* Invalid FID in the name entry, remove the name entry. */
+ if (!fid_is_norm(cfid)) {
+ rc = lfsck_lpf_remove_name_entry(env, lfsck, name);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ goto find_child1;
+ }
+
+ child2 = lfsck_object_find_bottom(env, lfsck, cfid);
+ if (IS_ERR(child2))
+ GOTO(put, rc = PTR_ERR(child2));
+
+ if (unlikely(!dt_object_exists(child2) ||
+ dt_object_remote(child2)) ||
+ !S_ISDIR(lfsck_object_type(child2))) {
+ rc = lfsck_lpf_remove_name_entry(env, lfsck, name);
+ if (rc != 0)
+ GOTO(put, rc);
+
+ goto find_child1;
+ }
+
+ if (unlikely(!dt_try_as_dir(env, child2))) {
+ lfsck_object_put(env, child2);
+ child2 = NULL;
+ rc = -ENOTDIR;
+ }
+
+find_child1:
+ if (fid_is_zero(&bk->lb_lpf_fid))
+ goto check_child2;
+
+ if (likely(lu_fid_eq(cfid, &bk->lb_lpf_fid))) {
+ if (lfsck->li_lpf_obj == NULL) {
+ lu_object_get(&child2->do_lu);
+ lfsck->li_lpf_obj = child2;
+ }
+
+ cname = lfsck_name_get_const(env, name, strlen(name));
+ rc = lfsck_verify_linkea(env, child2, cname, &LU_LPF_FID);
+
+ GOTO(put, rc);
+ }
+
+ if (unlikely(!fid_is_norm(&bk->lb_lpf_fid))) {
+ struct lu_fid tfid = bk->lb_lpf_fid;
+
+ /* Invalid FID record in the bookmark file, reset it. */
+ fid_zero(&bk->lb_lpf_fid);
+ rc = lfsck_bookmark_store(env, lfsck);
+
+ CDEBUG(D_LFSCK, "%s: reset invalid LPF fid "DFID
+ " in the bookmark file: rc = %d\n",
+ lfsck_lfsck2name(lfsck), PFID(&tfid), rc);
+
+ if (rc != 0)
+ GOTO(put, rc);
+
+ goto check_child2;
+ }
+
+ child1 = lfsck_object_find_bottom(env, lfsck, &bk->lb_lpf_fid);
+ if (IS_ERR(child1)) {
+ child1 = NULL;
+ goto check_child2;
+ }
+
+ if (unlikely(!dt_object_exists(child1) ||
+ dt_object_remote(child1)) ||
+ !S_ISDIR(lfsck_object_type(child1))) {
+ /* Invalid FID record in the bookmark file, reset it. */
+ fid_zero(&bk->lb_lpf_fid);
+ rc = lfsck_bookmark_store(env, lfsck);
+
+ CDEBUG(D_LFSCK, "%s: reset invalid LPF fid "DFID
+ " in the bookmark file: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
+ PFID(lfsck_dto2fid(child1)), rc);
+
+ if (rc != 0)
+ GOTO(put, rc);
+
+ lfsck_object_put(env, child1);
+ child1 = NULL;
+ goto check_child2;
+ }
+
+ if (unlikely(!dt_try_as_dir(env, child1))) {
+ lfsck_object_put(env, child1);
+ child1 = NULL;
+ rc = -ENOTDIR;
+ goto check_child2;
+ }
+
+ rc = lfsck_verify_lpf_pairs(env, lfsck, child1, name, pfid,
+ LVLT_BY_BOOKMARK);
+ if (lu_fid_eq(pfid, &LU_LPF_FID))
+ GOTO(put, rc);
+
+check_child2:
+ if (child2 != NULL)
+ rc = lfsck_verify_lpf_pairs(env, lfsck, child2, name,
+ pfid, LVLT_BY_NAMEENTRY);
+
+ GOTO(put, rc);
+
+put:
+ if (lfsck->li_lpf_obj != NULL) {
+ if (unlikely(!dt_try_as_dir(env, lfsck->li_lpf_obj))) {
+ lfsck_object_put(env, lfsck->li_lpf_obj);
+ lfsck->li_lpf_obj = NULL;
+ rc = -ENOTDIR;
+ }
+ } else if (rc == 0) {
+ rc = lfsck_create_lpf(env, lfsck);
+ }
+
+ if (child2 != NULL && !IS_ERR(child2))
+ lfsck_object_put(env, child2);
+ if (child1 != NULL && !IS_ERR(child1))
+ lfsck_object_put(env, child1);
+
+ return rc;
+}
+
+static int lfsck_fid_init(struct lfsck_instance *lfsck)
+{
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ struct seq_server_site *ss = lfsck_dev_site(lfsck);
+ char *prefix;
+ int rc = 0;
+ ENTRY;
+
+ if (unlikely(ss == NULL))
+ RETURN(-ENXIO);
+
+ OBD_ALLOC_PTR(lfsck->li_seq);
+ if (lfsck->li_seq == NULL)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC(prefix, MAX_OBD_NAME + 7);
+ if (prefix == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ snprintf(prefix, MAX_OBD_NAME + 7, "lfsck-%s", lfsck_lfsck2name(lfsck));
+ rc = seq_client_init(lfsck->li_seq, NULL, LUSTRE_SEQ_METADATA, prefix,
+ ss->ss_server_seq);
+ OBD_FREE(prefix, MAX_OBD_NAME + 7);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ if (fid_is_sane(&bk->lb_last_fid))
+ lfsck->li_seq->lcs_fid = bk->lb_last_fid;
+
+ RETURN(0);
+
+out:
+ OBD_FREE_PTR(lfsck->li_seq);
+ lfsck->li_seq = NULL;
+
+ return rc;
+}
+
+static void lfsck_fid_fini(struct lfsck_instance *lfsck)
+{
+ if (lfsck->li_seq != NULL) {
+ seq_client_fini(lfsck->li_seq);
+ OBD_FREE_PTR(lfsck->li_seq);
+ lfsck->li_seq = NULL;
+ }
+}
+
+void lfsck_instance_cleanup(const struct lu_env *env,
+ struct lfsck_instance *lfsck)
+{
+ struct ptlrpc_thread *thread = &lfsck->li_thread;
+ struct lfsck_component *com;
+ struct lfsck_component *next;
+ struct lfsck_lmv_unit *llu;
+ struct lfsck_lmv_unit *llu_next;
+ struct lfsck_lmv *llmv;
+ ENTRY;
+
+ LASSERT(list_empty(&lfsck->li_link));
+ LASSERT(thread_is_init(thread) || thread_is_stopped(thread));
+
+ if (lfsck->li_obj_oit != NULL) {
+ lfsck_object_put(env, lfsck->li_obj_oit);
+ lfsck->li_obj_oit = NULL;
+ }
+
+ LASSERT(lfsck->li_obj_dir == NULL);
+ LASSERT(lfsck->li_lmv == NULL);
+
+ list_for_each_entry_safe(llu, llu_next, &lfsck->li_list_lmv, llu_link) {
+ llmv = &llu->llu_lmv;
+
+ LASSERTF(atomic_read(&llmv->ll_ref) == 1,
+ "still in using: %u\n",
+ atomic_read(&llmv->ll_ref));
+
+ lfsck_lmv_put(env, llmv);
+ }
+
+ list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
+ lfsck_component_cleanup(env, com);
+ }
+
+ LASSERT(list_empty(&lfsck->li_list_dir));
+
+ list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan,
+ lc_link) {
+ lfsck_component_cleanup(env, com);
+ }
+
+ list_for_each_entry_safe(com, next, &lfsck->li_list_idle, lc_link) {
+ lfsck_component_cleanup(env, com);
+ }
+
+ lfsck_tgt_descs_fini(&lfsck->li_ost_descs);
+ lfsck_tgt_descs_fini(&lfsck->li_mdt_descs);
+
+ if (lfsck->li_lfsck_dir != NULL) {
+ lfsck_object_put(env, lfsck->li_lfsck_dir);
+ lfsck->li_lfsck_dir = NULL;
+ }
+
+ if (lfsck->li_bookmark_obj != NULL) {
+ lfsck_object_put(env, lfsck->li_bookmark_obj);
+ lfsck->li_bookmark_obj = NULL;
+ }
+
+ if (lfsck->li_lpf_obj != NULL) {
+ lfsck_object_put(env, lfsck->li_lpf_obj);
+ lfsck->li_lpf_obj = NULL;
+ }
+
+ if (lfsck->li_lpf_root_obj != NULL) {
+ lfsck_object_put(env, lfsck->li_lpf_root_obj);
+ lfsck->li_lpf_root_obj = NULL;
+ }
+
+ if (lfsck->li_los != NULL) {
+ local_oid_storage_fini(env, lfsck->li_los);
+ lfsck->li_los = NULL;
+ }
+
+ lfsck_fid_fini(lfsck);
+
+ OBD_FREE_PTR(lfsck);
+}
+
+static inline struct lfsck_instance *
+__lfsck_instance_find(struct dt_device *key, bool ref, bool unlink)
+{
+ struct lfsck_instance *lfsck;
+
+ list_for_each_entry(lfsck, &lfsck_instance_list, li_link) {
+ if (lfsck->li_bottom == key) {
+ if (ref)
+ lfsck_instance_get(lfsck);
+ if (unlink)
+ list_del_init(&lfsck->li_link);
+
+ return lfsck;
+ }
+ }
+
+ return NULL;
+}
+
+struct lfsck_instance *lfsck_instance_find(struct dt_device *key, bool ref,
+ bool unlink)
+{
+ struct lfsck_instance *lfsck;
+
+ spin_lock(&lfsck_instance_lock);
+ lfsck = __lfsck_instance_find(key, ref, unlink);
+ spin_unlock(&lfsck_instance_lock);
+
+ return lfsck;
+}
- if (!dt_object_exists(obj)) {
- lfsck_object_put(env, obj);
- return 0;
+static inline int lfsck_instance_add(struct lfsck_instance *lfsck)
+{
+ struct lfsck_instance *tmp;
+
+ spin_lock(&lfsck_instance_lock);
+ list_for_each_entry(tmp, &lfsck_instance_list, li_link) {
+ if (lfsck->li_bottom == tmp->li_bottom) {
+ spin_unlock(&lfsck_instance_lock);
+ return -EEXIST;
}
+ }
- /* Currently, only client visible directory can be remote. */
- if (dt_object_remote(obj)) {
- lfsck_object_put(env, obj);
- return 1;
+ list_add_tail(&lfsck->li_link, &lfsck_instance_list);
+ spin_unlock(&lfsck_instance_lock);
+ return 0;
+}
+
+void lfsck_bits_dump(struct seq_file *m, int bits, const char *names[],
+ const char *prefix)
+{
+ int flag;
+ int i;
+ bool newline = (bits != 0 ? false : true);
+
+ seq_printf(m, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
+
+ for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
+ if (flag & bits) {
+ bits &= ~flag;
+ if (names[i] != NULL) {
+ if (bits == 0)
+ newline = true;
+
+ seq_printf(m, "%s%c", names[i],
+ newline ? '\n' : ',');
+ }
+ }
+ }
+
+ if (!newline)
+ seq_putc(m, '\n');
+}
+
+void lfsck_time_dump(struct seq_file *m, __u64 time, const char *name)
+{
+ if (time == 0) {
+ seq_printf(m, "%s_time: N/A\n", name);
+ seq_printf(m, "time_since_%s: N/A\n", name);
+ } else {
+ seq_printf(m, "%s_time: %llu\n", name, time);
+ seq_printf(m, "time_since_%s: %llu seconds\n",
+ name, cfs_time_current_sec() - time);
+ }
+}
+
+void lfsck_pos_dump(struct seq_file *m, struct lfsck_position *pos,
+ const char *prefix)
+{
+ if (fid_is_zero(&pos->lp_dir_parent)) {
+ if (pos->lp_oit_cookie == 0) {
+ seq_printf(m, "%s: N/A, N/A, N/A\n", prefix);
+ return;
+ }
+ seq_printf(m, "%s: %llu, N/A, N/A\n",
+ prefix, pos->lp_oit_cookie);
+ } else {
+ seq_printf(m, "%s: %llu, "DFID", %#llx\n",
+ prefix, pos->lp_oit_cookie,
+ PFID(&pos->lp_dir_parent), pos->lp_dir_cookie);
+ }
+}
+
+void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
+ struct lfsck_position *pos, bool init)
+{
+ const struct dt_it_ops *iops = &lfsck->li_obj_oit->do_index_ops->dio_it;
+
+ if (unlikely(lfsck->li_di_oit == NULL)) {
+ memset(pos, 0, sizeof(*pos));
+ return;
+ }
+
+ pos->lp_oit_cookie = iops->store(env, lfsck->li_di_oit);
+ if (!lfsck->li_current_oit_processed && !init)
+ pos->lp_oit_cookie--;
+
+ LASSERT(pos->lp_oit_cookie > 0);
+
+ if (lfsck->li_di_dir != NULL) {
+ struct dt_object *dto = lfsck->li_obj_dir;
+
+ pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
+ lfsck->li_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 = *lfsck_dto2fid(dto);
+ }
+ } else {
+ fid_zero(&pos->lp_dir_parent);
+ pos->lp_dir_cookie = 0;
+ }
+}
+
+bool __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
+{
+ bool dirty = false;
+
+ if (limit != LFSCK_SPEED_NO_LIMIT) {
+ if (limit > msecs_to_jiffies(MSEC_PER_SEC)) {
+ lfsck->li_sleep_rate = limit /
+ msecs_to_jiffies(MSEC_PER_SEC);
+ lfsck->li_sleep_jif = 1;
+ } else {
+ lfsck->li_sleep_rate = 1;
+ lfsck->li_sleep_jif = msecs_to_jiffies(MSEC_PER_SEC) /
+ limit;
+ }
+ } else {
+ lfsck->li_sleep_jif = 0;
+ lfsck->li_sleep_rate = 0;
+ }
+
+ if (lfsck->li_bookmark_ram.lb_speed_limit != limit) {
+ lfsck->li_bookmark_ram.lb_speed_limit = limit;
+ dirty = true;
+ }
+
+ return dirty;
+}
+
+void lfsck_control_speed(struct lfsck_instance *lfsck)
+{
+ struct ptlrpc_thread *thread = &lfsck->li_thread;
+ struct l_wait_info lwi;
+
+ if (lfsck->li_sleep_jif > 0 &&
+ lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
+ lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
+ LWI_ON_SIGNAL_NOOP, NULL);
+
+ l_wait_event(thread->t_ctl_waitq,
+ !thread_is_running(thread),
+ &lwi);
+ lfsck->li_new_scanned = 0;
+ }
+}
+
+void lfsck_control_speed_by_self(struct lfsck_component *com)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct ptlrpc_thread *thread = &lfsck->li_thread;
+ struct l_wait_info lwi;
+
+ if (lfsck->li_sleep_jif > 0 &&
+ com->lc_new_scanned >= lfsck->li_sleep_rate) {
+ lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
+ LWI_ON_SIGNAL_NOOP, NULL);
+
+ l_wait_event(thread->t_ctl_waitq,
+ !thread_is_running(thread),
+ &lwi);
+ com->lc_new_scanned = 0;
+ }
+}
+
+static struct lfsck_thread_args *
+lfsck_thread_args_init(struct lfsck_instance *lfsck,
+ struct lfsck_component *com,
+ struct lfsck_start_param *lsp)
+{
+ struct lfsck_thread_args *lta;
+ int rc;
+
+ OBD_ALLOC_PTR(lta);
+ if (lta == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ rc = lu_env_init(<a->lta_env, LCT_MD_THREAD | LCT_DT_THREAD);
+ if (rc != 0) {
+ OBD_FREE_PTR(lta);
+ return ERR_PTR(rc);
+ }
+
+ lta->lta_lfsck = lfsck_instance_get(lfsck);
+ if (com != NULL)
+ lta->lta_com = lfsck_component_get(com);
+
+ lta->lta_lsp = lsp;
+
+ return lta;
+}
+
+void lfsck_thread_args_fini(struct lfsck_thread_args *lta)
+{
+ if (lta->lta_com != NULL)
+ lfsck_component_put(<a->lta_env, lta->lta_com);
+ lfsck_instance_put(<a->lta_env, lta->lta_lfsck);
+ lu_env_fini(<a->lta_env);
+ OBD_FREE_PTR(lta);
+}
+
+struct lfsck_assistant_data *
+lfsck_assistant_data_init(struct lfsck_assistant_operations *lao,
+ const char *name)
+{
+ struct lfsck_assistant_data *lad;
+
+ OBD_ALLOC_PTR(lad);
+ if (lad != NULL) {
+ lad->lad_bitmap = CFS_ALLOCATE_BITMAP(BITS_PER_LONG);
+ if (lad->lad_bitmap == NULL) {
+ OBD_FREE_PTR(lad);
+ return NULL;
+ }
+
+ INIT_LIST_HEAD(&lad->lad_req_list);
+ spin_lock_init(&lad->lad_lock);
+ INIT_LIST_HEAD(&lad->lad_ost_list);
+ INIT_LIST_HEAD(&lad->lad_ost_phase1_list);
+ INIT_LIST_HEAD(&lad->lad_ost_phase2_list);
+ INIT_LIST_HEAD(&lad->lad_mdt_list);
+ INIT_LIST_HEAD(&lad->lad_mdt_phase1_list);
+ INIT_LIST_HEAD(&lad->lad_mdt_phase2_list);
+ init_waitqueue_head(&lad->lad_thread.t_ctl_waitq);
+ lad->lad_ops = lao;
+ lad->lad_name = name;
+ }
+
+ return lad;
+}
+
+struct lfsck_assistant_object *
+lfsck_assistant_object_init(const struct lu_env *env, const struct lu_fid *fid,
+ const struct lu_attr *attr, __u64 cookie,
+ bool is_dir)
+{
+ struct lfsck_assistant_object *lso;
+
+ OBD_ALLOC_PTR(lso);
+ if (lso == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ lso->lso_fid = *fid;
+ if (attr != NULL)
+ lso->lso_attr = *attr;
+
+ atomic_set(&lso->lso_ref, 1);
+ lso->lso_oit_cookie = cookie;
+ if (is_dir)
+ lso->lso_is_dir = 1;
+
+ return lso;
+}
+
+struct dt_object *
+lfsck_assistant_object_load(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_assistant_object *lso)
+{
+ struct dt_object *obj;
+
+ obj = lfsck_object_find_bottom(env, lfsck, &lso->lso_fid);
+ if (IS_ERR(obj))
+ return obj;
+
+ if (unlikely(!dt_object_exists(obj) || lfsck_is_dead_obj(obj))) {
+ lso->lso_dead = 1;
+ lfsck_object_put(env, obj);
+
+ return ERR_PTR(-ENOENT);
+ }
+
+ if (lso->lso_is_dir && unlikely(!dt_try_as_dir(env, obj))) {
+ lfsck_object_put(env, obj);
+
+ return ERR_PTR(-ENOTDIR);
+ }
+
+ return obj;
+}
+
+/**
+ * Generic LFSCK asynchronous communication interpretor function.
+ * The LFSCK RPC reply for both the event notification and status
+ * querying will be handled here.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] req pointer to the LFSCK request
+ * \param[in] args pointer to the lfsck_async_interpret_args
+ * \param[in] rc the result for handling the LFSCK request
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int lfsck_async_interpret_common(const struct lu_env *env,
+ struct ptlrpc_request *req,
+ void *args, int rc)
+{
+ struct lfsck_async_interpret_args *laia = args;
+ struct lfsck_component *com = laia->laia_com;
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct lfsck_tgt_descs *ltds = laia->laia_ltds;
+ struct lfsck_tgt_desc *ltd = laia->laia_ltd;
+ struct lfsck_request *lr = laia->laia_lr;
+
+ LASSERT(com->lc_lfsck->li_master);
+
+ switch (lr->lr_event) {
+ case LE_START:
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: fail to notify %s %x for %s "
+ "start: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck),
+ (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ ltd->ltd_index, lad->lad_name, rc);
+
+ if (com->lc_type == LFSCK_TYPE_LAYOUT) {
+ struct lfsck_layout *lo = com->lc_file_ram;
+
+ if (lr->lr_flags & LEF_TO_OST)
+ lfsck_lad_set_bitmap(env, com,
+ ltd->ltd_index);
+ else
+ lo->ll_flags |= LF_INCOMPLETE;
+ } else {
+ struct lfsck_namespace *ns = com->lc_file_ram;
+
+ /* If some MDT does not join the namespace
+ * LFSCK, then we cannot know whether there
+ * is some name entry on such MDT that with
+ * the referenced MDT-object on this MDT or
+ * not. So the namespace LFSCK on this MDT
+ * cannot handle orphan MDT-objects properly.
+ * So we mark the LFSCK as LF_INCOMPLETE and
+ * skip orphan MDT-objects handling. */
+ ns->ln_flags |= LF_INCOMPLETE;
+ }
+ break;
+ }
+
+ spin_lock(<ds->ltd_lock);
+ if (ltd->ltd_dead) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (com->lc_type == LFSCK_TYPE_LAYOUT) {
+ struct list_head *list;
+ struct list_head *phase_list;
+
+ if (ltd->ltd_layout_done) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (lr->lr_flags & LEF_TO_OST) {
+ list = &lad->lad_ost_list;
+ phase_list = &lad->lad_ost_phase1_list;
+ } else {
+ list = &lad->lad_mdt_list;
+ phase_list = &lad->lad_mdt_phase1_list;
+ }
+
+ if (list_empty(<d->ltd_layout_list))
+ list_add_tail(<d->ltd_layout_list, list);
+ if (list_empty(<d->ltd_layout_phase_list))
+ list_add_tail(<d->ltd_layout_phase_list,
+ phase_list);
+ } else {
+ if (ltd->ltd_namespace_done) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (list_empty(<d->ltd_namespace_list))
+ list_add_tail(<d->ltd_namespace_list,
+ &lad->lad_mdt_list);
+ if (list_empty(<d->ltd_namespace_phase_list))
+ list_add_tail(<d->ltd_namespace_phase_list,
+ &lad->lad_mdt_phase1_list);
+ }
+ spin_unlock(<ds->ltd_lock);
+ break;
+ case LE_STOP:
+ case LE_PHASE1_DONE:
+ case LE_PHASE2_DONE:
+ case LE_PEER_EXIT:
+ if (rc != 0 && rc != -EALREADY)
+ CDEBUG(D_LFSCK, "%s: fail to notify %s %x for %s: "
+ "event = %d, rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck),
+ (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ ltd->ltd_index, lad->lad_name, lr->lr_event, rc);
+ break;
+ case LE_QUERY: {
+ struct lfsck_reply *reply;
+ struct list_head *list;
+ struct list_head *phase_list;
+
+ if (com->lc_type == LFSCK_TYPE_LAYOUT) {
+ list = <d->ltd_layout_list;
+ phase_list = <d->ltd_layout_phase_list;
+ } else {
+ list = <d->ltd_namespace_list;
+ phase_list = <d->ltd_namespace_phase_list;
+ }
+
+ if (rc != 0) {
+ if (lr->lr_flags & LEF_QUERY_ALL) {
+ lfsck_reset_ltd_status(ltd, com->lc_type);
+ break;
+ }
+
+ spin_lock(<ds->ltd_lock);
+ list_del_init(phase_list);
+ list_del_init(list);
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ reply = req_capsule_server_get(&req->rq_pill,
+ &RMF_LFSCK_REPLY);
+ if (reply == NULL) {
+ rc = -EPROTO;
+ CDEBUG(D_LFSCK, "%s: invalid query reply for %s: "
+ "rc = %d\n", lfsck_lfsck2name(com->lc_lfsck),
+ lad->lad_name, rc);
+
+ if (lr->lr_flags & LEF_QUERY_ALL) {
+ lfsck_reset_ltd_status(ltd, com->lc_type);
+ break;
+ }
+
+ spin_lock(<ds->ltd_lock);
+ list_del_init(phase_list);
+ list_del_init(list);
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (lr->lr_flags & LEF_QUERY_ALL) {
+ if (com->lc_type == LFSCK_TYPE_LAYOUT) {
+ ltd->ltd_layout_status = reply->lr_status;
+ ltd->ltd_layout_repaired = reply->lr_repaired;
+ } else {
+ ltd->ltd_namespace_status = reply->lr_status;
+ ltd->ltd_namespace_repaired =
+ reply->lr_repaired;
+ }
+ break;
+ }
+
+ switch (reply->lr_status) {
+ case LS_SCANNING_PHASE1:
+ break;
+ case LS_SCANNING_PHASE2:
+ spin_lock(<ds->ltd_lock);
+ list_del_init(phase_list);
+ if (ltd->ltd_dead) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (com->lc_type == LFSCK_TYPE_LAYOUT) {
+ if (ltd->ltd_layout_done) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ if (lr->lr_flags & LEF_TO_OST)
+ list_add_tail(phase_list,
+ &lad->lad_ost_phase2_list);
+ else
+ list_add_tail(phase_list,
+ &lad->lad_mdt_phase2_list);
+ } else {
+ if (ltd->ltd_namespace_done) {
+ spin_unlock(<ds->ltd_lock);
+ break;
+ }
+
+ list_add_tail(phase_list,
+ &lad->lad_mdt_phase2_list);
+ }
+ spin_unlock(<ds->ltd_lock);
+ break;
+ default:
+ spin_lock(<ds->ltd_lock);
+ list_del_init(phase_list);
+ list_del_init(list);
+ spin_unlock(<ds->ltd_lock);
+ break;
}
+ break;
+ }
+ default:
+ CDEBUG(D_LFSCK, "%s: unexpected event: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), lr->lr_event);
+ break;
+ }
- depth++;
+ if (!laia->laia_shared) {
+ lfsck_tgt_put(ltd);
+ lfsck_component_put(env, com);
}
+
return 0;
}
-/* LFSCK wrap functions */
+static void lfsck_interpret(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct ptlrpc_request *req, void *args, int result)
+{
+ struct lfsck_async_interpret_args *laia = args;
+ struct lfsck_component *com;
+
+ LASSERT(laia->laia_com == NULL);
+ LASSERT(laia->laia_shared);
+
+ spin_lock(&lfsck->li_lock);
+ list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
+ laia->laia_com = com;
+ lfsck_async_interpret_common(env, req, laia, result);
+ }
+
+ list_for_each_entry(com, &lfsck->li_list_double_scan, lc_link) {
+ laia->laia_com = com;
+ lfsck_async_interpret_common(env, req, laia, result);
+ }
+ spin_unlock(&lfsck->li_lock);
+}
-void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck,
- bool new_checked)
+static int lfsck_stop_notify(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_tgt_descs *ltds,
+ struct lfsck_tgt_desc *ltd, __u16 type)
{
struct lfsck_component *com;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(lfsck->li_master);
+
+ spin_lock(&lfsck->li_lock);
+ com = __lfsck_component_find(lfsck, type, &lfsck->li_list_scan);
+ if (com == NULL)
+ com = __lfsck_component_find(lfsck, type,
+ &lfsck->li_list_double_scan);
+ if (com != NULL)
+ lfsck_component_get(com);
+ spin_unlock(&lfsck->li_lock);
+
+ if (com != NULL) {
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lfsck_async_interpret_args *laia = &info->lti_laia;
+ struct lfsck_request *lr = &info->lti_lr;
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct list_head *list;
+ struct list_head *phase_list;
+ struct ptlrpc_request_set *set;
+
+ set = ptlrpc_prep_set();
+ if (set == NULL) {
+ lfsck_component_put(env, com);
+
+ RETURN(-ENOMEM);
+ }
+
+ if (type == LFSCK_TYPE_LAYOUT) {
+ list = <d->ltd_layout_list;
+ phase_list = <d->ltd_layout_phase_list;
+ } else {
+ list = <d->ltd_namespace_list;
+ phase_list = <d->ltd_namespace_phase_list;
+ }
+
+ spin_lock(<ds->ltd_lock);
+ if (list_empty(list)) {
+ LASSERT(list_empty(phase_list));
+ spin_unlock(<ds->ltd_lock);
+ ptlrpc_set_destroy(set);
+
+ RETURN(0);
+ }
+
+ list_del_init(phase_list);
+ list_del_init(list);
+ spin_unlock(<ds->ltd_lock);
+
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_index = lfsck_dev_idx(lfsck);
+ lr->lr_event = LE_PEER_EXIT;
+ lr->lr_active = type;
+ lr->lr_status = LS_CO_PAUSED;
+ if (ltds == &lfsck->li_ost_descs)
+ lr->lr_flags = LEF_TO_OST;
+
+ memset(laia, 0, sizeof(*laia));
+ laia->laia_com = com;
+ laia->laia_ltds = ltds;
+ atomic_inc(<d->ltd_ref);
+ laia->laia_ltd = ltd;
+ laia->laia_lr = lr;
+
+ rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
+ lfsck_async_interpret_common,
+ laia, LFSCK_NOTIFY);
+ if (rc != 0) {
+ CDEBUG(D_LFSCK, "%s: fail to notify %s %x for "
+ "co-stop for %s: rc = %d\n",
+ lfsck_lfsck2name(lfsck),
+ (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ ltd->ltd_index, lad->lad_name, rc);
+ lfsck_tgt_put(ltd);
+ } else {
+ rc = ptlrpc_set_wait(set);
+ }
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
- com->lc_ops->lfsck_fail(env, com, new_checked);
+ ptlrpc_set_destroy(set);
+ lfsck_component_put(env, com);
}
+
+ RETURN(rc);
}
-int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck)
+static int lfsck_async_interpret(const struct lu_env *env,
+ struct ptlrpc_request *req,
+ void *args, int rc)
{
- struct lfsck_component *com;
- int rc;
+ struct lfsck_async_interpret_args *laia = args;
+ struct lfsck_instance *lfsck;
+
+ lfsck = container_of0(laia->laia_ltds, struct lfsck_instance,
+ li_mdt_descs);
+ lfsck_interpret(env, lfsck, req, laia, rc);
+ lfsck_tgt_put(laia->laia_ltd);
+ if (rc != 0 && laia->laia_result != -EALREADY)
+ laia->laia_result = rc;
+
+ return 0;
+}
+
+int lfsck_async_request(const struct lu_env *env, struct obd_export *exp,
+ struct lfsck_request *lr,
+ struct ptlrpc_request_set *set,
+ ptlrpc_interpterer_t interpreter,
+ void *args, int request)
+{
+ struct lfsck_async_interpret_args *laia;
+ struct ptlrpc_request *req;
+ struct lfsck_request *tmp;
+ struct req_format *format;
+ int rc;
+
+ switch (request) {
+ case LFSCK_NOTIFY:
+ format = &RQF_LFSCK_NOTIFY;
+ break;
+ case LFSCK_QUERY:
+ format = &RQF_LFSCK_QUERY;
+ break;
+ default:
+ CDEBUG(D_LFSCK, "%s: unknown async request %d: rc = %d\n",
+ exp->exp_obd->obd_name, request, -EINVAL);
+ return -EINVAL;
+ }
+
+ req = ptlrpc_request_alloc(class_exp2cliimp(exp), format);
+ if (req == NULL)
+ return -ENOMEM;
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, request);
+ if (rc != 0) {
+ ptlrpc_request_free(req);
+
+ return rc;
+ }
- if (likely(cfs_time_beforeq(cfs_time_current(),
- lfsck->li_time_next_checkpoint)))
- return 0;
+ tmp = req_capsule_client_get(&req->rq_pill, &RMF_LFSCK_REQUEST);
+ *tmp = *lr;
+ ptlrpc_request_set_replen(req);
- lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
- rc = com->lc_ops->lfsck_checkpoint(env, com, false);
- if (rc != 0)
- return rc;;
- }
+ laia = ptlrpc_req_async_args(req);
+ *laia = *(struct lfsck_async_interpret_args *)args;
+ if (laia->laia_com != NULL)
+ lfsck_component_get(laia->laia_com);
+ req->rq_interpret_reply = interpreter;
+ req->rq_allow_intr = 1;
+ ptlrpc_set_add_req(set, req);
- lfsck->li_time_last_checkpoint = cfs_time_current();
- lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
- cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
return 0;
}
-int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck)
+int lfsck_query_all(const struct lu_env *env, struct lfsck_component *com)
{
- struct dt_object *obj = NULL;
- struct lfsck_component *com;
- struct lfsck_component *next;
- struct lfsck_position *pos = NULL;
- const struct dt_it_ops *iops =
- &lfsck->li_obj_oit->do_index_ops->dio_it;
- struct dt_it *di;
- int rc;
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lfsck_request *lr = &info->lti_lr;
+ struct lfsck_async_interpret_args *laia = &info->lti_laia;
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_tgt_descs *ltds = &lfsck->li_mdt_descs;
+ struct lfsck_tgt_desc *ltd;
+ struct ptlrpc_request_set *set;
+ int idx;
+ int rc;
ENTRY;
- LASSERT(lfsck->li_obj_dir == NULL);
- LASSERT(lfsck->li_di_dir == NULL);
-
- lfsck->li_current_oit_processed = 0;
- cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
- com->lc_new_checked = 0;
- if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
- com->lc_journal = 0;
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = LE_QUERY;
+ lr->lr_active = com->lc_type;
+ lr->lr_flags = LEF_QUERY_ALL;
- rc = com->lc_ops->lfsck_prep(env, com);
- if (rc != 0)
- RETURN(rc);
+ memset(laia, 0, sizeof(*laia));
+ laia->laia_com = com;
+ laia->laia_lr = lr;
- if ((pos == NULL) ||
- (!lfsck_pos_is_zero(&com->lc_pos_start) &&
- lfsck_pos_is_eq(pos, &com->lc_pos_start) > 0))
- pos = &com->lc_pos_start;
- }
+ set = ptlrpc_prep_set();
+ if (set == NULL)
+ RETURN(-ENOMEM);
- /* Init otable-based iterator. */
- if (pos == NULL) {
- rc = iops->load(env, lfsck->li_di_oit, 0);
- if (rc > 0) {
- lfsck->li_oit_over = 1;
- rc = 0;
+again:
+ laia->laia_ltds = ltds;
+ down_read(<ds->ltd_rw_sem);
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_tgt_get(ltds, idx);
+ LASSERT(ltd != NULL);
+
+ laia->laia_ltd = ltd;
+ up_read(<ds->ltd_rw_sem);
+ rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
+ lfsck_async_interpret_common,
+ laia, LFSCK_QUERY);
+ if (rc != 0) {
+ struct lfsck_assistant_data *lad = com->lc_data;
+
+ CDEBUG(D_LFSCK, "%s: Fail to query %s %x for stat %s: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck),
+ (lr->lr_flags & LEF_TO_OST) ? "OST" : "MDT",
+ ltd->ltd_index, lad->lad_name, rc);
+ lfsck_reset_ltd_status(ltd, com->lc_type);
+ lfsck_tgt_put(ltd);
}
+ down_read(<ds->ltd_rw_sem);
+ }
+ up_read(<ds->ltd_rw_sem);
- GOTO(out, rc);
+ if (com->lc_type == LFSCK_TYPE_LAYOUT && !(lr->lr_flags & LEF_TO_OST)) {
+ ltds = &lfsck->li_ost_descs;
+ lr->lr_flags |= LEF_TO_OST;
+ goto again;
}
- rc = iops->load(env, lfsck->li_di_oit, pos->lp_oit_cookie);
- if (rc < 0)
- GOTO(out, rc);
- else if (rc > 0)
- lfsck->li_oit_over = 1;
+ rc = ptlrpc_set_wait(set);
+ ptlrpc_set_destroy(set);
- if (!lfsck->li_master || fid_is_zero(&pos->lp_dir_parent))
- GOTO(out, rc = 0);
+ RETURN(rc);
+}
- /* Find the directory for namespace-based traverse. */
- obj = lfsck_object_find(env, lfsck, &pos->lp_dir_parent);
- if (obj == NULL)
- GOTO(out, rc = 0);
- else if (IS_ERR(obj))
- RETURN(PTR_ERR(obj));
+int lfsck_start_assistant(const struct lu_env *env, struct lfsck_component *com,
+ struct lfsck_start_param *lsp)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct ptlrpc_thread *mthread = &lfsck->li_thread;
+ struct ptlrpc_thread *athread = &lad->lad_thread;
+ struct lfsck_thread_args *lta;
+ struct task_struct *task;
+ int rc;
+ ENTRY;
- /* XXX: Currently, skip remote object, the consistency for
- * remote object will be processed in LFSCK phase III. */
- if (!dt_object_exists(obj) || dt_object_remote(obj) ||
- unlikely(!S_ISDIR(lfsck_object_type(obj))))
- GOTO(out, rc = 0);
+ lad->lad_assistant_status = 0;
+ lad->lad_post_result = 0;
+ lad->lad_to_post = 0;
+ lad->lad_to_double_scan = 0;
+ lad->lad_in_double_scan = 0;
+ lad->lad_exit = 0;
+ lad->lad_advance_lock = false;
+ thread_set_flags(athread, 0);
+
+ lta = lfsck_thread_args_init(lfsck, com, lsp);
+ if (IS_ERR(lta))
+ RETURN(PTR_ERR(lta));
+
+ task = kthread_run(lfsck_assistant_engine, lta, lad->lad_name);
+ if (IS_ERR(task)) {
+ rc = PTR_ERR(task);
+ CERROR("%s: cannot start LFSCK assistant thread for %s: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck), lad->lad_name, rc);
+ lfsck_thread_args_fini(lta);
+ } else {
+ struct l_wait_info lwi = { 0 };
- if (unlikely(!dt_try_as_dir(env, obj)))
- GOTO(out, rc = -ENOTDIR);
+ l_wait_event(mthread->t_ctl_waitq,
+ thread_is_running(athread) ||
+ thread_is_stopped(athread),
+ &lwi);
+ if (unlikely(!thread_is_running(athread)))
+ rc = lad->lad_assistant_status;
+ else
+ rc = 0;
+ }
+
+ RETURN(rc);
+}
+
+int lfsck_checkpoint_generic(const struct lu_env *env,
+ struct lfsck_component *com)
+{
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct ptlrpc_thread *mthread = &com->lc_lfsck->li_thread;
+ struct ptlrpc_thread *athread = &lad->lad_thread;
+ struct l_wait_info lwi = { 0 };
+
+ l_wait_event(mthread->t_ctl_waitq,
+ list_empty(&lad->lad_req_list) ||
+ !thread_is_running(mthread) ||
+ thread_is_stopped(athread),
+ &lwi);
- /* Init the namespace-based directory traverse. */
- iops = &obj->do_index_ops->dio_it;
- di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
- if (IS_ERR(di))
- GOTO(out, rc = PTR_ERR(di));
+ if (!thread_is_running(mthread) || thread_is_stopped(athread))
+ return LFSCK_CHECKPOINT_SKIP;
- LASSERT(pos->lp_dir_cookie < MDS_DIR_END_OFF);
+ return 0;
+}
- 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;
+void lfsck_post_generic(const struct lu_env *env,
+ struct lfsck_component *com, int *result)
+{
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct ptlrpc_thread *athread = &lad->lad_thread;
+ struct ptlrpc_thread *mthread = &com->lc_lfsck->li_thread;
+ struct l_wait_info lwi = { 0 };
+
+ lad->lad_post_result = *result;
+ if (*result <= 0)
+ lad->lad_exit = 1;
+ lad->lad_to_post = 1;
+
+ CDEBUG(D_LFSCK, "%s: waiting for assistant to do %s post, rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), lad->lad_name, *result);
+
+ wake_up_all(&athread->t_ctl_waitq);
+ l_wait_event(mthread->t_ctl_waitq,
+ (*result > 0 && list_empty(&lad->lad_req_list)) ||
+ thread_is_stopped(athread),
+ &lwi);
- if (rc != 0) {
- iops->put(env, di);
- iops->fini(env, di);
- GOTO(out, rc);
- }
+ if (lad->lad_assistant_status < 0)
+ *result = lad->lad_assistant_status;
- lfsck->li_obj_dir = lfsck_object_get(obj);
- lfsck->li_cookie_dir = iops->store(env, di);
- spin_lock(&lfsck->li_lock);
- lfsck->li_di_dir = di;
- spin_unlock(&lfsck->li_lock);
+ CDEBUG(D_LFSCK, "%s: the assistant has done %s post, rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), lad->lad_name, *result);
+}
- GOTO(out, rc = 0);
+int lfsck_double_scan_generic(const struct lu_env *env,
+ struct lfsck_component *com, int status)
+{
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct ptlrpc_thread *mthread = &com->lc_lfsck->li_thread;
+ struct ptlrpc_thread *athread = &lad->lad_thread;
+ struct l_wait_info lwi = { 0 };
-out:
- if (obj != NULL)
- lfsck_object_put(env, obj);
+ if (status != LS_SCANNING_PHASE2)
+ lad->lad_exit = 1;
+ else
+ lad->lad_to_double_scan = 1;
- if (rc < 0) {
- cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan,
- lc_link)
- com->lc_ops->lfsck_post(env, com, rc, true);
+ CDEBUG(D_LFSCK, "%s: waiting for assistant to do %s double_scan, "
+ "status %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), lad->lad_name, status);
- return rc;
- }
+ wake_up_all(&athread->t_ctl_waitq);
+ l_wait_event(mthread->t_ctl_waitq,
+ lad->lad_in_double_scan ||
+ thread_is_stopped(athread),
+ &lwi);
- rc = 0;
- lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, true);
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
- rc = com->lc_ops->lfsck_checkpoint(env, com, true);
- if (rc != 0)
- break;
- }
+ CDEBUG(D_LFSCK, "%s: the assistant has done %s double_scan, "
+ "status %d\n", lfsck_lfsck2name(com->lc_lfsck), lad->lad_name,
+ lad->lad_assistant_status);
- lfsck->li_time_last_checkpoint = cfs_time_current();
- lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
- cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
- return rc;
+ if (lad->lad_assistant_status < 0)
+ return lad->lad_assistant_status;
+
+ return 0;
}
-int lfsck_exec_oit(const struct lu_env *env, struct lfsck_instance *lfsck,
- struct dt_object *obj)
+void lfsck_quit_generic(const struct lu_env *env,
+ struct lfsck_component *com)
{
- struct lfsck_component *com;
- const struct dt_it_ops *iops;
- struct dt_it *di;
- int rc;
+ struct lfsck_assistant_data *lad = com->lc_data;
+ struct ptlrpc_thread *mthread = &com->lc_lfsck->li_thread;
+ struct ptlrpc_thread *athread = &lad->lad_thread;
+ struct l_wait_info lwi = { 0 };
+
+ lad->lad_exit = 1;
+ wake_up_all(&athread->t_ctl_waitq);
+ l_wait_event(mthread->t_ctl_waitq,
+ thread_is_init(athread) ||
+ thread_is_stopped(athread),
+ &lwi);
+}
+
+int lfsck_load_one_trace_file(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *parent,
+ struct dt_object **child,
+ const struct dt_index_features *ft,
+ const char *name, bool reset)
+{
+ struct lfsck_instance *lfsck = com->lc_lfsck;
+ struct dt_object *obj;
+ int rc;
ENTRY;
- LASSERT(lfsck->li_obj_dir == NULL);
+ if (*child != NULL) {
+ struct dt_it *it;
+ const struct dt_it_ops *iops;
+ struct lu_fid *fid = &lfsck_env_info(env)->lti_fid3;
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
- rc = com->lc_ops->lfsck_exec_oit(env, com, obj);
- if (rc != 0)
- RETURN(rc);
- }
+ if (!reset)
+ RETURN(0);
- rc = lfsck_needs_scan_dir(env, lfsck, obj);
- if (rc <= 0)
- GOTO(out, rc);
+ obj = *child;
+ rc = obj->do_ops->do_index_try(env, obj, ft);
+ if (rc)
+ /* unlink by force */
+ goto unlink;
- if (unlikely(!dt_try_as_dir(env, obj)))
- GOTO(out, rc = -ENOTDIR);
+ iops = &obj->do_index_ops->dio_it;
+ it = iops->init(env, obj, 0);
+ if (IS_ERR(it))
+ /* unlink by force */
+ goto unlink;
- iops = &obj->do_index_ops->dio_it;
- di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
- if (IS_ERR(di))
- GOTO(out, rc = PTR_ERR(di));
+ fid_zero(fid);
+ rc = iops->get(env, it, (const struct dt_key *)fid);
+ if (rc >= 0) {
+ rc = iops->next(env, it);
+ iops->put(env, it);
+ }
+ iops->fini(env, it);
+ if (rc > 0)
+ /* "rc > 0" means the index file is empty. */
+ RETURN(0);
- rc = iops->load(env, di, 0);
- if (rc == 0)
- rc = iops->next(env, di);
- else if (rc > 0)
- rc = 0;
+unlink:
+ /* The old index is not empty, remove it firstly. */
+ rc = local_object_unlink(env, lfsck->li_bottom, parent, name);
- if (rc != 0) {
- iops->put(env, di);
- iops->fini(env, di);
- GOTO(out, rc);
+ CDEBUG(D_LFSCK, "%s: unlink lfsck sub trace file %s: rc = %d\n",
+ lfsck_lfsck2name(com->lc_lfsck), name, rc);
+
+ if (rc)
+ RETURN(rc);
+
+ lfsck_object_put(env, *child);
+ *child = NULL;
}
- lfsck->li_obj_dir = lfsck_object_get(obj);
- lfsck->li_cookie_dir = iops->store(env, di);
- spin_lock(&lfsck->li_lock);
- lfsck->li_di_dir = di;
- spin_unlock(&lfsck->li_lock);
+ obj = local_index_find_or_create(env, lfsck->li_los, parent, name,
+ S_IFREG | S_IRUGO | S_IWUSR, ft);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
- GOTO(out, rc = 0);
+ rc = obj->do_ops->do_index_try(env, obj, ft);
+ if (rc == 0)
+ *child = obj;
-out:
- if (rc < 0)
- lfsck_fail(env, lfsck, false);
- return (rc > 0 ? 0 : rc);
+ RETURN(rc);
}
-int lfsck_exec_dir(const struct lu_env *env, struct lfsck_instance *lfsck,
- struct dt_object *obj, struct lu_dirent *ent)
+int lfsck_load_sub_trace_files(const struct lu_env *env,
+ struct lfsck_component *com,
+ const struct dt_index_features *ft,
+ const char *prefix, bool reset)
{
- struct lfsck_component *com;
- int rc;
+ char *name = lfsck_env_info(env)->lti_key;
+ struct lfsck_sub_trace_obj *lsto;
+ int rc;
+ int i;
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
- rc = com->lc_ops->lfsck_exec_dir(env, com, obj, ent);
- if (rc != 0)
- return rc;
+ for (i = 0, rc = 0, lsto = &com->lc_sub_trace_objs[0];
+ i < LFSCK_STF_COUNT && rc == 0; i++, lsto++) {
+ snprintf(name, NAME_MAX, "%s_%02d", prefix, i);
+ rc = lfsck_load_one_trace_file(env, com,
+ com->lc_lfsck->li_lfsck_dir,
+ &lsto->lsto_obj, ft, name, reset);
}
- return 0;
+
+ return rc;
}
-int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck,
- int result)
+/* external interfaces */
+
+int lfsck_get_speed(struct seq_file *m, struct dt_device *key)
{
- struct lfsck_component *com;
- struct lfsck_component *next;
+ struct lu_env env;
+ struct lfsck_instance *lfsck;
int rc;
+ ENTRY;
- lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
- cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
- rc = com->lc_ops->lfsck_post(env, com, result, false);
- if (rc != 0)
- return rc;
+ rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
+ if (rc != 0)
+ RETURN(rc);
+
+ lfsck = lfsck_instance_find(key, true, false);
+ if (likely(lfsck != NULL)) {
+ seq_printf(m, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit);
+ lfsck_instance_put(&env, lfsck);
+ } else {
+ rc = -ENXIO;
}
- lfsck->li_time_last_checkpoint = cfs_time_current();
- lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
- cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
- return result;
+ lu_env_fini(&env);
+
+ RETURN(rc);
}
+EXPORT_SYMBOL(lfsck_get_speed);
-int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck)
+int lfsck_set_speed(struct dt_device *key, __u32 val)
{
- struct lfsck_component *com;
- struct lfsck_component *next;
+ struct lu_env env;
+ struct lfsck_instance *lfsck;
int rc;
+ ENTRY;
- cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan,
- lc_link) {
- if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
- com->lc_journal = 0;
+ rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
+ if (rc != 0)
+ RETURN(rc);
- rc = com->lc_ops->lfsck_double_scan(env, com);
- if (rc != 0)
- return rc;
+ lfsck = lfsck_instance_find(key, true, false);
+ if (likely(lfsck != NULL)) {
+ mutex_lock(&lfsck->li_mutex);
+ if (__lfsck_set_speed(lfsck, val))
+ rc = lfsck_bookmark_store(&env, lfsck);
+ mutex_unlock(&lfsck->li_mutex);
+ lfsck_instance_put(&env, lfsck);
+ } else {
+ rc = -ENXIO;
}
- return 0;
-}
-/* external interfaces */
+ lu_env_fini(&env);
-int lfsck_get_speed(struct dt_device *key, void *buf, int len)
+ RETURN(rc);
+}
+EXPORT_SYMBOL(lfsck_set_speed);
+
+int lfsck_get_windows(struct seq_file *m, struct dt_device *key)
{
struct lu_env env;
struct lfsck_instance *lfsck;
int rc;
ENTRY;
- lfsck = lfsck_instance_find(key, true, false);
- if (unlikely(lfsck == NULL))
- RETURN(-ENODEV);
-
rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
if (rc != 0)
- GOTO(out, rc);
+ RETURN(rc);
- rc = snprintf(buf, len, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit);
- lu_env_fini(&env);
+ lfsck = lfsck_instance_find(key, true, false);
+ if (likely(lfsck != NULL)) {
+ seq_printf(m, "%u\n", lfsck->li_bookmark_ram.lb_async_windows);
+ lfsck_instance_put(&env, lfsck);
+ } else {
+ rc = -ENXIO;
+ }
- GOTO(out, rc);
+ lu_env_fini(&env);
-out:
- lfsck_instance_put(&env, lfsck);
- return rc;
+ RETURN(rc);
}
-EXPORT_SYMBOL(lfsck_get_speed);
+EXPORT_SYMBOL(lfsck_get_windows);
-int lfsck_set_speed(struct dt_device *key, int val)
+int lfsck_set_windows(struct dt_device *key, int val)
{
struct lu_env env;
struct lfsck_instance *lfsck;
int rc;
ENTRY;
- lfsck = lfsck_instance_find(key, true, false);
- if (unlikely(lfsck == NULL))
- RETURN(-ENODEV);
-
rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
if (rc != 0)
- GOTO(out, rc);
+ RETURN(rc);
- mutex_lock(&lfsck->li_mutex);
- __lfsck_set_speed(lfsck, val);
- rc = lfsck_bookmark_store(&env, lfsck);
- mutex_unlock(&lfsck->li_mutex);
- lu_env_fini(&env);
+ lfsck = lfsck_instance_find(key, true, false);
+ if (likely(lfsck != NULL)) {
+ if (val < 1 || val > LFSCK_ASYNC_WIN_MAX) {
+ CWARN("%s: invalid async windows size that may "
+ "cause memory issues. The valid range is "
+ "[1 - %u].\n",
+ lfsck_lfsck2name(lfsck), LFSCK_ASYNC_WIN_MAX);
+ rc = -EINVAL;
+ } else if (lfsck->li_bookmark_ram.lb_async_windows != val) {
+ mutex_lock(&lfsck->li_mutex);
+ lfsck->li_bookmark_ram.lb_async_windows = val;
+ rc = lfsck_bookmark_store(&env, lfsck);
+ mutex_unlock(&lfsck->li_mutex);
+ }
+ lfsck_instance_put(&env, lfsck);
+ } else {
+ rc = -ENXIO;
+ }
- GOTO(out, rc);
+ lu_env_fini(&env);
-out:
- lfsck_instance_put(&env, lfsck);
- return rc;
+ RETURN(rc);
}
-EXPORT_SYMBOL(lfsck_set_speed);
+EXPORT_SYMBOL(lfsck_set_windows);
-int lfsck_dump(struct dt_device *key, void *buf, int len, __u16 type)
+int lfsck_dump(struct seq_file *m, struct dt_device *key, enum lfsck_type type)
{
struct lu_env env;
struct lfsck_instance *lfsck;
- struct lfsck_component *com = NULL;
+ struct lfsck_component *com;
int rc;
ENTRY;
+ rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
+ if (rc != 0)
+ RETURN(rc);
+
lfsck = lfsck_instance_find(key, true, false);
- if (unlikely(lfsck == NULL))
- RETURN(-ENODEV);
+ if (likely(lfsck != NULL)) {
+ com = lfsck_component_find(lfsck, type);
+ if (likely(com != NULL)) {
+ com->lc_ops->lfsck_dump(&env, com, m);
+ lfsck_component_put(&env, com);
+ } else {
+ rc = -ENOTSUPP;
+ }
- com = lfsck_component_find(lfsck, type);
- if (com == NULL)
- GOTO(out, rc = -ENOTSUPP);
+ lfsck_instance_put(&env, lfsck);
+ } else {
+ rc = -ENXIO;
+ }
+
+ lu_env_fini(&env);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(lfsck_dump);
+
+static int lfsck_stop_all(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_stop *stop)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lfsck_request *lr = &info->lti_lr;
+ struct lfsck_async_interpret_args *laia = &info->lti_laia;
+ struct ptlrpc_request_set *set;
+ struct lfsck_tgt_descs *ltds = &lfsck->li_mdt_descs;
+ struct lfsck_tgt_desc *ltd;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ __u32 idx;
+ int rc = 0;
+ int rc1 = 0;
+ ENTRY;
+
+ LASSERT(stop->ls_flags & LPF_BROADCAST);
+
+ set = ptlrpc_prep_set();
+ if (unlikely(set == NULL))
+ RETURN(-ENOMEM);
+
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = LE_STOP;
+ lr->lr_index = lfsck_dev_idx(lfsck);
+ lr->lr_status = stop->ls_status;
+ lr->lr_version = bk->lb_version;
+ lr->lr_active = LFSCK_TYPES_ALL;
+ lr->lr_param = stop->ls_flags;
+
+ memset(laia, 0, sizeof(*laia));
+ laia->laia_ltds = ltds;
+ laia->laia_lr = lr;
+ laia->laia_shared = 1;
+
+ down_read(<ds->ltd_rw_sem);
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_tgt_get(ltds, idx);
+ LASSERT(ltd != NULL);
+
+ laia->laia_ltd = ltd;
+ rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
+ lfsck_async_interpret, laia,
+ LFSCK_NOTIFY);
+ if (rc != 0) {
+ lfsck_interpret(env, lfsck, NULL, laia, rc);
+ lfsck_tgt_put(ltd);
+ CERROR("%s: cannot notify MDT %x for LFSCK stop: "
+ "rc = %d\n", lfsck_lfsck2name(lfsck), idx, rc);
+ rc1 = rc;
+ }
+ }
+ up_read(<ds->ltd_rw_sem);
+
+ rc = ptlrpc_set_wait(set);
+ ptlrpc_set_destroy(set);
+
+ if (rc == 0)
+ rc = laia->laia_result;
+
+ if (rc == -EALREADY)
+ rc = 0;
- rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
if (rc != 0)
- GOTO(out, rc);
+ CERROR("%s: fail to stop LFSCK on some MDTs: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
- rc = com->lc_ops->lfsck_dump(&env, com, buf, len);
- lu_env_fini(&env);
+ RETURN(rc != 0 ? rc : rc1);
+}
- GOTO(out, rc);
+static int lfsck_start_all(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_start *start)
+{
+ struct lfsck_thread_info *info = lfsck_env_info(env);
+ struct lfsck_request *lr = &info->lti_lr;
+ struct lfsck_async_interpret_args *laia = &info->lti_laia;
+ struct ptlrpc_request_set *set;
+ struct lfsck_tgt_descs *ltds = &lfsck->li_mdt_descs;
+ struct lfsck_tgt_desc *ltd;
+ struct lfsck_bookmark *bk = &lfsck->li_bookmark_ram;
+ __u32 idx;
+ int rc = 0;
+ ENTRY;
-out:
- if (com != NULL)
- lfsck_component_put(&env, com);
- lfsck_instance_put(&env, lfsck);
- return rc;
+ LASSERT(start->ls_flags & LPF_BROADCAST);
+
+ set = ptlrpc_prep_set();
+ if (unlikely(set == NULL))
+ RETURN(-ENOMEM);
+
+ memset(lr, 0, sizeof(*lr));
+ lr->lr_event = LE_START;
+ lr->lr_index = lfsck_dev_idx(lfsck);
+ lr->lr_speed = bk->lb_speed_limit;
+ lr->lr_version = bk->lb_version;
+ lr->lr_active = start->ls_active;
+ lr->lr_param = start->ls_flags;
+ lr->lr_async_windows = bk->lb_async_windows;
+ lr->lr_valid = LSV_SPEED_LIMIT | LSV_ERROR_HANDLE | LSV_DRYRUN |
+ LSV_ASYNC_WINDOWS | LSV_CREATE_OSTOBJ |
+ LSV_CREATE_MDTOBJ;
+
+ memset(laia, 0, sizeof(*laia));
+ laia->laia_ltds = ltds;
+ laia->laia_lr = lr;
+ laia->laia_shared = 1;
+
+ down_read(<ds->ltd_rw_sem);
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_tgt_get(ltds, idx);
+ LASSERT(ltd != NULL);
+
+ laia->laia_ltd = ltd;
+ ltd->ltd_layout_done = 0;
+ ltd->ltd_namespace_done = 0;
+ ltd->ltd_synced_failures = 0;
+ rc = lfsck_async_request(env, ltd->ltd_exp, lr, set,
+ lfsck_async_interpret, laia,
+ LFSCK_NOTIFY);
+ if (rc != 0) {
+ lfsck_interpret(env, lfsck, NULL, laia, rc);
+ lfsck_tgt_put(ltd);
+ CERROR("%s: cannot notify MDT %x for LFSCK "
+ "start, failout: rc = %d\n",
+ lfsck_lfsck2name(lfsck), idx, rc);
+ break;
+ }
+ }
+ up_read(<ds->ltd_rw_sem);
+
+ if (rc != 0) {
+ ptlrpc_set_destroy(set);
+
+ RETURN(rc);
+ }
+
+ rc = ptlrpc_set_wait(set);
+ ptlrpc_set_destroy(set);
+
+ if (rc == 0)
+ rc = laia->laia_result;
+
+ if (rc != 0) {
+ struct lfsck_stop *stop = &info->lti_stop;
+
+ CERROR("%s: cannot start LFSCK on some MDTs, "
+ "stop all: rc = %d\n",
+ lfsck_lfsck2name(lfsck), rc);
+ if (rc != -EALREADY) {
+ stop->ls_status = LS_FAILED;
+ stop->ls_flags = LPF_ALL_TGT | LPF_BROADCAST;
+ lfsck_stop_all(env, lfsck, stop);
+ }
+ }
+
+ RETURN(rc);
}
-EXPORT_SYMBOL(lfsck_dump);
int lfsck_start(const struct lu_env *env, struct dt_device *key,
struct lfsck_start_param *lsp)
{
- struct lfsck_start *start = lsp->lsp_start;
- struct lfsck_instance *lfsck;
- struct lfsck_bookmark *bk;
- struct ptlrpc_thread *thread;
- struct lfsck_component *com;
- struct l_wait_info lwi = { 0 };
- bool dirty = false;
- int rc = 0;
- __u16 valid = 0;
- __u16 flags = 0;
+ struct lfsck_start *start = lsp->lsp_start;
+ struct lfsck_instance *lfsck;
+ struct lfsck_bookmark *bk;
+ struct ptlrpc_thread *thread;
+ struct lfsck_component *com;
+ struct l_wait_info lwi = { 0 };
+ struct lfsck_thread_args *lta;
+ struct task_struct *task;
+ struct lfsck_tgt_descs *ltds;
+ struct lfsck_tgt_desc *ltd;
+ __u32 idx;
+ int rc = 0;
+ __u16 valid = 0;
+ __u16 flags = 0;
+ __u16 type = 1;
ENTRY;
lfsck = lfsck_instance_find(key, true, false);
if (unlikely(lfsck == NULL))
- RETURN(-ENODEV);
+ RETURN(-ENXIO);
+
+ /* System is not ready, try again later. */
+ if (unlikely(lfsck->li_namespace == NULL))
+ GOTO(put, rc = -EAGAIN);
/* start == NULL means auto trigger paused LFSCK. */
if ((start == NULL) &&
- (cfs_list_empty(&lfsck->li_list_scan) ||
+ (list_empty(&lfsck->li_list_scan) ||
OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AUTO)))
GOTO(put, rc = 0);
mutex_lock(&lfsck->li_mutex);
spin_lock(&lfsck->li_lock);
if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
- spin_unlock(&lfsck->li_lock);
- GOTO(out, rc = -EALREADY);
- }
-
- spin_unlock(&lfsck->li_lock);
+ rc = -EALREADY;
+ if (unlikely(start == NULL)) {
+ spin_unlock(&lfsck->li_lock);
+ GOTO(out, rc);
+ }
- lfsck->li_namespace = lsp->lsp_namespace;
- lfsck->li_paused = 0;
- lfsck->li_oit_over = 0;
- lfsck->li_drop_dryrun = 0;
- lfsck->li_new_scanned = 0;
+ while (start->ls_active != 0) {
+ if (!(type & start->ls_active)) {
+ type <<= 1;
+ continue;
+ }
- /* For auto trigger. */
- if (start == NULL)
- goto trigger;
+ com = __lfsck_component_find(lfsck, type,
+ &lfsck->li_list_scan);
+ if (com == NULL)
+ com = __lfsck_component_find(lfsck, type,
+ &lfsck->li_list_double_scan);
+ if (com == NULL) {
+ rc = -EOPNOTSUPP;
+ break;
+ }
- start->ls_version = bk->lb_version;
- if (start->ls_valid & LSV_SPEED_LIMIT) {
- __lfsck_set_speed(lfsck, start->ls_speed_limit);
- dirty = true;
+ if (com->lc_ops->lfsck_join != NULL) {
+ rc = com->lc_ops->lfsck_join( env, com, lsp);
+ if (rc != 0 && rc != -EALREADY)
+ break;
+ }
+ start->ls_active &= ~type;
+ type <<= 1;
+ }
+ spin_unlock(&lfsck->li_lock);
+ GOTO(out, rc);
}
+ spin_unlock(&lfsck->li_lock);
- if (start->ls_valid & LSV_ERROR_HANDLE) {
- valid |= DOIV_ERROR_HANDLE;
- if (start->ls_flags & LPF_FAILOUT)
- flags |= DOIF_FAILOUT;
+ lfsck->li_status = 0;
+ lfsck->li_oit_over = 0;
+ lfsck->li_start_unplug = 0;
+ lfsck->li_drop_dryrun = 0;
+ lfsck->li_new_scanned = 0;
- 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;
- }
- }
+ /* For auto trigger. */
+ if (start == NULL)
+ goto trigger;
- 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->li_drop_dryrun = 1;
- dirty = true;
- }
- }
+ if (start->ls_flags & LPF_BROADCAST && !lfsck->li_master) {
+ CERROR("%s: only allow to specify '-A | -o' via MDS\n",
+ lfsck_lfsck2name(lfsck));
- if (dirty) {
- rc = lfsck_bookmark_store(env, lfsck);
- if (rc != 0)
- GOTO(out, rc);
+ GOTO(out, rc = -EPERM);
}
- if (start->ls_flags & LPF_RESET)
- flags |= DOIF_RESET;
+ start->ls_version = bk->lb_version;
if (start->ls_active != 0) {
struct lfsck_component *next;
- __u16 type = 1;
if (start->ls_active == LFSCK_TYPES_ALL)
start->ls_active = LFSCK_TYPES_SUPPORTED;
GOTO(out, rc = -ENOTSUPP);
}
- cfs_list_for_each_entry_safe(com, next,
- &lfsck->li_list_scan, lc_link) {
+ list_for_each_entry_safe(com, next,
+ &lfsck->li_list_scan, lc_link) {
if (!(com->lc_type & start->ls_active)) {
rc = com->lc_ops->lfsck_post(env, com, 0,
false);
if (type & start->ls_active) {
com = __lfsck_component_find(lfsck, type,
&lfsck->li_list_idle);
- if (com != NULL) {
+ 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->li_list_scan);
- }
+ list_move_tail(&com->lc_link,
+ &lfsck->li_list_scan);
start->ls_active &= ~type;
}
type <<= 1;
}
}
- cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
+ if (list_empty(&lfsck->li_list_scan)) {
+ /* The speed limit will be used to control both the LFSCK and
+ * low layer scrub (if applied), need to be handled firstly. */
+ if (start->ls_valid & LSV_SPEED_LIMIT) {
+ if (__lfsck_set_speed(lfsck, start->ls_speed_limit)) {
+ rc = lfsck_bookmark_store(env, lfsck);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+ }
+
+ goto trigger;
+ }
+
+ if (start->ls_flags & LPF_RESET)
+ flags |= DOIF_RESET;
+
+ rc = lfsck_set_param(env, lfsck, start, !!(flags & DOIF_RESET));
+ if (rc != 0)
+ GOTO(out, rc);
+
+ list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
start->ls_active |= com->lc_type;
if (flags & DOIF_RESET) {
rc = com->lc_ops->lfsck_reset(env, com, false);
}
}
+ ltds = &lfsck->li_mdt_descs;
+ down_read(<ds->ltd_rw_sem);
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_ltd2tgt(ltds, idx);
+ LASSERT(ltd != NULL);
+
+ ltd->ltd_layout_done = 0;
+ ltd->ltd_namespace_done = 0;
+ ltd->ltd_synced_failures = 0;
+ lfsck_reset_ltd_status(ltd, LFSCK_TYPE_NAMESPACE);
+ lfsck_reset_ltd_status(ltd, LFSCK_TYPE_LAYOUT);
+ list_del_init(<d->ltd_layout_phase_list);
+ list_del_init(<d->ltd_layout_list);
+ list_del_init(<d->ltd_namespace_phase_list);
+ list_del_init(<d->ltd_namespace_list);
+ }
+ up_read(<ds->ltd_rw_sem);
+
+ ltds = &lfsck->li_ost_descs;
+ down_read(<ds->ltd_rw_sem);
+ cfs_foreach_bit(ltds->ltd_tgts_bitmap, idx) {
+ ltd = lfsck_ltd2tgt(ltds, idx);
+ LASSERT(ltd != NULL);
+
+ ltd->ltd_layout_done = 0;
+ ltd->ltd_synced_failures = 0;
+ lfsck_reset_ltd_status(ltd, LFSCK_TYPE_LAYOUT);
+ list_del_init(<d->ltd_layout_phase_list);
+ list_del_init(<d->ltd_layout_list);
+ }
+ up_read(<ds->ltd_rw_sem);
+
trigger:
- lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY;
+ lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY | LUDA_TYPE;
if (bk->lb_param & LPF_DRYRUN)
lfsck->li_args_dir |= LUDA_VERIFY_DRYRUN;
- if (bk->lb_param & LPF_FAILOUT) {
+ if (start != NULL && start->ls_valid & LSV_ERROR_HANDLE) {
valid |= DOIV_ERROR_HANDLE;
- flags |= DOIF_FAILOUT;
+ if (start->ls_flags & LPF_FAILOUT)
+ flags |= DOIF_FAILOUT;
}
- if (!cfs_list_empty(&lfsck->li_list_scan))
+ if (start != NULL && start->ls_valid & LSV_DRYRUN) {
+ valid |= DOIV_DRYRUN;
+ if (start->ls_flags & LPF_DRYRUN)
+ flags |= DOIF_DRYRUN;
+ }
+
+ if (!list_empty(&lfsck->li_list_scan))
flags |= DOIF_OUTUSED;
lfsck->li_args_oit = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid;
thread_set_flags(thread, 0);
- if (lfsck->li_master)
- rc = PTR_ERR(kthread_run(lfsck_master_engine, lfsck, "lfsck"));
- if (rc < 0)
- CERROR("%s: cannot start LFSCK thread, rc = %d\n",
+ lta = lfsck_thread_args_init(lfsck, NULL, lsp);
+ if (IS_ERR(lta))
+ GOTO(out, rc = PTR_ERR(lta));
+
+ __lfsck_set_speed(lfsck, bk->lb_speed_limit);
+ task = kthread_run(lfsck_master_engine, lta, "lfsck");
+ if (IS_ERR(task)) {
+ rc = PTR_ERR(task);
+ CERROR("%s: cannot start LFSCK thread: rc = %d\n",
lfsck_lfsck2name(lfsck), rc);
- else
- l_wait_event(thread->t_ctl_waitq,
- thread_is_running(thread) ||
- thread_is_stopped(thread),
- &lwi);
+ lfsck_thread_args_fini(lta);
- GOTO(out, rc = 0);
+ GOTO(out, rc);
+ }
+
+ l_wait_event(thread->t_ctl_waitq,
+ thread_is_running(thread) ||
+ thread_is_stopped(thread),
+ &lwi);
+ if (start == NULL || !(start->ls_flags & LPF_BROADCAST)) {
+ lfsck->li_start_unplug = 1;
+ wake_up_all(&thread->t_ctl_waitq);
+
+ GOTO(out, rc = 0);
+ }
+
+ /* release lfsck::li_mutex to avoid deadlock. */
+ mutex_unlock(&lfsck->li_mutex);
+ rc = lfsck_start_all(env, lfsck, start);
+ if (rc != 0) {
+ spin_lock(&lfsck->li_lock);
+ if (thread_is_stopped(thread)) {
+ spin_unlock(&lfsck->li_lock);
+ } else {
+ lfsck->li_status = LS_FAILED;
+ lfsck->li_flags = 0;
+ thread_set_flags(thread, SVC_STOPPING);
+ spin_unlock(&lfsck->li_lock);
+
+ lfsck->li_start_unplug = 1;
+ wake_up_all(&thread->t_ctl_waitq);
+ l_wait_event(thread->t_ctl_waitq,
+ thread_is_stopped(thread),
+ &lwi);
+ }
+ } else {
+ lfsck->li_start_unplug = 1;
+ wake_up_all(&thread->t_ctl_waitq);
+ }
+
+ GOTO(put, rc);
out:
mutex_unlock(&lfsck->li_mutex);
+
put:
lfsck_instance_put(env, lfsck);
- return (rc < 0 ? rc : 0);
+
+ return rc < 0 ? rc : 0;
}
EXPORT_SYMBOL(lfsck_start);
-int lfsck_stop(const struct lu_env *env, struct dt_device *key, bool pause)
+int lfsck_stop(const struct lu_env *env, struct dt_device *key,
+ struct lfsck_stop *stop)
{
struct lfsck_instance *lfsck;
struct ptlrpc_thread *thread;
struct l_wait_info lwi = { 0 };
+ int rc = 0;
+ int rc1 = 0;
ENTRY;
lfsck = lfsck_instance_find(key, true, false);
if (unlikely(lfsck == NULL))
- RETURN(-ENODEV);
+ RETURN(-ENXIO);
thread = &lfsck->li_thread;
+ /* release lfsck::li_mutex to avoid deadlock. */
+ if (stop != NULL && stop->ls_flags & LPF_BROADCAST) {
+ if (!lfsck->li_master) {
+ CERROR("%s: only allow to specify '-A' via MDS\n",
+ lfsck_lfsck2name(lfsck));
+
+ GOTO(out, rc = -EPERM);
+ }
+
+ rc1 = lfsck_stop_all(env, lfsck, stop);
+ }
+
mutex_lock(&lfsck->li_mutex);
spin_lock(&lfsck->li_lock);
+ /* no error if LFSCK is already stopped, or was never started */
if (thread_is_init(thread) || thread_is_stopped(thread)) {
spin_unlock(&lfsck->li_lock);
- mutex_unlock(&lfsck->li_mutex);
- lfsck_instance_put(env, lfsck);
- RETURN(-EALREADY);
+ GOTO(out, rc = 0);
+ }
+
+ if (stop != NULL) {
+ lfsck->li_status = stop->ls_status;
+ lfsck->li_flags = stop->ls_flags;
+ } else {
+ lfsck->li_status = LS_STOPPED;
+ lfsck->li_flags = 0;
}
- if (pause)
- lfsck->li_paused = 1;
thread_set_flags(thread, SVC_STOPPING);
+
+ if (lfsck->li_master) {
+ struct lfsck_component *com;
+ struct lfsck_assistant_data *lad;
+
+ list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
+ lad = com->lc_data;
+ spin_lock(&lad->lad_lock);
+ if (lad->lad_task != NULL)
+ force_sig(SIGINT, lad->lad_task);
+ spin_unlock(&lad->lad_lock);
+ }
+
+ list_for_each_entry(com, &lfsck->li_list_double_scan, lc_link) {
+ lad = com->lc_data;
+ spin_lock(&lad->lad_lock);
+ if (lad->lad_task != NULL)
+ force_sig(SIGINT, lad->lad_task);
+ spin_unlock(&lad->lad_lock);
+ }
+ }
+
spin_unlock(&lfsck->li_lock);
- cfs_waitq_broadcast(&thread->t_ctl_waitq);
+ wake_up_all(&thread->t_ctl_waitq);
l_wait_event(thread->t_ctl_waitq,
thread_is_stopped(thread),
&lwi);
+
+ GOTO(out, rc = 0);
+
+out:
mutex_unlock(&lfsck->li_mutex);
lfsck_instance_put(env, lfsck);
- RETURN(0);
+ return rc != 0 ? rc : rc1;
}
EXPORT_SYMBOL(lfsck_stop);
+int lfsck_in_notify(const struct lu_env *env, struct dt_device *key,
+ struct lfsck_request *lr, struct thandle *th)
+{
+ int rc = -EOPNOTSUPP;
+ ENTRY;
+
+ switch (lr->lr_event) {
+ case LE_START: {
+ struct lfsck_start *start = &lfsck_env_info(env)->lti_start;
+ struct lfsck_start_param lsp;
+
+ memset(start, 0, sizeof(*start));
+ start->ls_valid = lr->lr_valid;
+ start->ls_speed_limit = lr->lr_speed;
+ start->ls_version = lr->lr_version;
+ start->ls_active = lr->lr_active;
+ start->ls_flags = lr->lr_param & ~LPF_BROADCAST;
+ start->ls_async_windows = lr->lr_async_windows;
+
+ lsp.lsp_start = start;
+ lsp.lsp_index = lr->lr_index;
+ lsp.lsp_index_valid = 1;
+ rc = lfsck_start(env, key, &lsp);
+ break;
+ }
+ case LE_STOP: {
+ struct lfsck_stop *stop = &lfsck_env_info(env)->lti_stop;
+
+ memset(stop, 0, sizeof(*stop));
+ stop->ls_status = lr->lr_status;
+ stop->ls_flags = lr->lr_param & ~LPF_BROADCAST;
+ rc = lfsck_stop(env, key, stop);
+ break;
+ }
+ case LE_PHASE1_DONE:
+ case LE_PHASE2_DONE:
+ case LE_FID_ACCESSED:
+ case LE_PEER_EXIT:
+ case LE_CONDITIONAL_DESTROY:
+ case LE_SET_LMV_MASTER:
+ case LE_SET_LMV_SLAVE:
+ case LE_PAIRS_VERIFY: {
+ struct lfsck_instance *lfsck;
+ struct lfsck_component *com;
+
+ lfsck = lfsck_instance_find(key, true, false);
+ if (unlikely(lfsck == NULL))
+ RETURN(-ENXIO);
+
+ com = lfsck_component_find(lfsck, lr->lr_active);
+ if (likely(com != NULL)) {
+ rc = com->lc_ops->lfsck_in_notify(env, com, lr, th);
+ lfsck_component_put(env, com);
+ }
+
+ lfsck_instance_put(env, lfsck);
+ break;
+ }
+ default:
+ break;
+ }
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(lfsck_in_notify);
+
+int lfsck_query(const struct lu_env *env, struct dt_device *key,
+ struct lfsck_request *req, struct lfsck_reply *rep,
+ struct lfsck_query *que)
+{
+ struct lfsck_instance *lfsck;
+ struct lfsck_component *com;
+ int i;
+ int rc = 0;
+ __u16 type;
+ ENTRY;
+
+ lfsck = lfsck_instance_find(key, true, false);
+ if (unlikely(lfsck == NULL))
+ RETURN(-ENXIO);
+
+ if (que != NULL) {
+ if (que->lu_types == LFSCK_TYPES_ALL)
+ que->lu_types =
+ LFSCK_TYPES_SUPPORTED & ~LFSCK_TYPE_SCRUB;
+
+ if (que->lu_types & ~LFSCK_TYPES_SUPPORTED) {
+ que->lu_types &= ~LFSCK_TYPES_SUPPORTED;
+
+ GOTO(out, rc = -ENOTSUPP);
+ }
+
+ for (i = 0, type = 1 << i; i < LFSCK_TYPE_BITS;
+ i++, type = 1 << i) {
+ if (!(que->lu_types & type))
+ continue;
+
+again:
+ com = lfsck_component_find(lfsck, type);
+ if (unlikely(com == NULL))
+ GOTO(out, rc = -ENOTSUPP);
+
+ memset(que->lu_mdts_count[i], 0,
+ sizeof(__u32) * (LS_MAX + 1));
+ memset(que->lu_osts_count[i], 0,
+ sizeof(__u32) * (LS_MAX + 1));
+ que->lu_repaired[i] = 0;
+ rc = com->lc_ops->lfsck_query(env, com, req, rep,
+ que, i);
+ lfsck_component_put(env, com);
+ if (rc < 0)
+ GOTO(out, rc);
+ }
+
+ if (!(que->lu_flags & LPF_WAIT))
+ GOTO(out, rc);
+
+ for (i = 0, type = 1 << i; i < LFSCK_TYPE_BITS;
+ i++, type = 1 << i) {
+ if (!(que->lu_types & type))
+ continue;
+
+ if (que->lu_mdts_count[i][LS_SCANNING_PHASE1] != 0 ||
+ que->lu_mdts_count[i][LS_SCANNING_PHASE2] != 0 ||
+ que->lu_osts_count[i][LS_SCANNING_PHASE1] != 0 ||
+ que->lu_osts_count[i][LS_SCANNING_PHASE2] != 0) {
+ struct l_wait_info lwi;
+
+ /* If it is required to wait, then sleep
+ * 3 seconds and try to query again. */
+ lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(3),
+ NULL,
+ LWI_ON_SIGNAL_NOOP,
+ NULL);
+ rc = l_wait_event(lfsck->li_thread.t_ctl_waitq,
+ 0, &lwi);
+ if (rc == -ETIMEDOUT)
+ goto again;
+ }
+ }
+ } else {
+ com = lfsck_component_find(lfsck, req->lr_active);
+ if (likely(com != NULL)) {
+ rc = com->lc_ops->lfsck_query(env, com, req, rep,
+ que, -1);
+ lfsck_component_put(env, com);
+ } else {
+ rc = -ENOTSUPP;
+ }
+ }
+
+ GOTO(out, rc);
+
+out:
+ lfsck_instance_put(env, lfsck);
+ return rc;
+}
+EXPORT_SYMBOL(lfsck_query);
+
+int lfsck_register_namespace(const struct lu_env *env, struct dt_device *key,
+ struct ldlm_namespace *ns)
+{
+ struct lfsck_instance *lfsck;
+ int rc = -ENXIO;
+
+ lfsck = lfsck_instance_find(key, true, false);
+ if (likely(lfsck != NULL)) {
+ lfsck->li_namespace = ns;
+ lfsck_instance_put(env, lfsck);
+ rc = 0;
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(lfsck_register_namespace);
+
int lfsck_register(const struct lu_env *env, struct dt_device *key,
- struct dt_device *next, bool master)
+ struct dt_device *next, struct obd_device *obd,
+ lfsck_out_notify notify, void *notify_data, bool master)
{
struct lfsck_instance *lfsck;
- struct dt_object *root;
- struct dt_object *obj;
+ struct dt_object *root = NULL;
+ struct dt_object *obj = NULL;
struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
int rc;
ENTRY;
mutex_init(&lfsck->li_mutex);
spin_lock_init(&lfsck->li_lock);
- CFS_INIT_LIST_HEAD(&lfsck->li_link);
- CFS_INIT_LIST_HEAD(&lfsck->li_list_scan);
- CFS_INIT_LIST_HEAD(&lfsck->li_list_dir);
- CFS_INIT_LIST_HEAD(&lfsck->li_list_double_scan);
- CFS_INIT_LIST_HEAD(&lfsck->li_list_idle);
+ INIT_LIST_HEAD(&lfsck->li_link);
+ INIT_LIST_HEAD(&lfsck->li_list_scan);
+ INIT_LIST_HEAD(&lfsck->li_list_dir);
+ INIT_LIST_HEAD(&lfsck->li_list_double_scan);
+ INIT_LIST_HEAD(&lfsck->li_list_idle);
+ INIT_LIST_HEAD(&lfsck->li_list_lmv);
atomic_set(&lfsck->li_ref, 1);
- cfs_waitq_init(&lfsck->li_thread.t_ctl_waitq);
+ atomic_set(&lfsck->li_double_scan_count, 0);
+ init_waitqueue_head(&lfsck->li_thread.t_ctl_waitq);
+ lfsck->li_out_notify = notify;
+ lfsck->li_out_notify_data = notify_data;
lfsck->li_next = next;
lfsck->li_bottom = key;
+ lfsck->li_obd = obd;
+
+ rc = lfsck_tgt_descs_init(&lfsck->li_ost_descs);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = lfsck_tgt_descs_init(&lfsck->li_mdt_descs);
+ if (rc != 0)
+ GOTO(out, rc);
fid->f_seq = FID_SEQ_LOCAL_NAME;
fid->f_oid = 1;
fid->f_ver = 0;
- rc = local_oid_storage_init(env, lfsck->li_bottom, fid, &lfsck->li_los);
+ rc = local_oid_storage_init(env, key, fid, &lfsck->li_los);
if (rc != 0)
GOTO(out, rc);
if (rc != 0)
GOTO(out, rc);
- root = dt_locate(env, lfsck->li_bottom, fid);
+ root = dt_locate(env, key, fid);
if (IS_ERR(root))
GOTO(out, rc = PTR_ERR(root));
- lfsck->li_local_root = root;
- dt_try_as_dir(env, root);
+ if (unlikely(!dt_try_as_dir(env, root)))
+ GOTO(out, rc = -ENOTDIR);
+
+ lfsck->li_local_root_fid = *fid;
if (master) {
lfsck->li_master = 1;
- if (lfsck_dev_idx(lfsck->li_bottom) == 0) {
+ if (lfsck_dev_idx(lfsck) == 0) {
+ struct lu_fid *pfid = &lfsck_env_info(env)->lti_fid2;
+ const struct lu_name *cname;
+
rc = dt_lookup(env, root,
(struct dt_rec *)(&lfsck->li_global_root_fid),
- (const struct dt_key *)"ROOT", BYPASS_CAPA);
+ (const struct dt_key *)"ROOT");
+ if (rc != 0)
+ GOTO(out, rc);
+
+ obj = dt_locate(env, key, &lfsck->li_global_root_fid);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ if (unlikely(!dt_try_as_dir(env, obj)))
+ GOTO(out, rc = -ENOTDIR);
+
+ rc = dt_lookup(env, obj, (struct dt_rec *)fid,
+ (const struct dt_key *)dotlustre);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ lfsck_object_put(env, obj);
+ obj = dt_locate(env, key, fid);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ cname = lfsck_name_get_const(env, dotlustre,
+ strlen(dotlustre));
+ rc = lfsck_verify_linkea(env, obj, cname,
+ &lfsck->li_global_root_fid);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ if (unlikely(!dt_try_as_dir(env, obj)))
+ GOTO(out, rc = -ENOTDIR);
+
+ *pfid = *fid;
+ rc = dt_lookup(env, obj, (struct dt_rec *)fid,
+ (const struct dt_key *)lostfound);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ lfsck_object_put(env, obj);
+ obj = dt_locate(env, key, fid);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ cname = lfsck_name_get_const(env, lostfound,
+ strlen(lostfound));
+ rc = lfsck_verify_linkea(env, obj, cname, pfid);
if (rc != 0)
GOTO(out, rc);
+
+ lfsck_object_put(env, obj);
+ obj = NULL;
}
}
fid->f_seq = FID_SEQ_LOCAL_FILE;
fid->f_oid = OTABLE_IT_OID;
fid->f_ver = 0;
- obj = dt_locate(env, lfsck->li_bottom, fid);
+ obj = dt_locate(env, key, fid);
if (IS_ERR(obj))
GOTO(out, rc = PTR_ERR(obj));
- lfsck->li_obj_oit = obj;
rc = obj->do_ops->do_index_try(env, obj, &dt_otable_features);
- if (rc != 0) {
- if (rc == -ENOTSUPP)
- GOTO(add, rc = 0);
-
+ if (rc != 0)
GOTO(out, rc);
- }
+ lfsck->li_obj_oit = obj;
+ obj = local_file_find_or_create(env, lfsck->li_los, root, LFSCK_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
+
+ lu_object_get(&obj->do_lu);
+ lfsck->li_lfsck_dir = obj;
rc = lfsck_bookmark_setup(env, lfsck);
if (rc != 0)
GOTO(out, rc);
if (master) {
+ rc = lfsck_fid_init(lfsck);
+ if (rc < 0)
+ GOTO(out, rc);
+
rc = lfsck_namespace_setup(env, lfsck);
if (rc < 0)
GOTO(out, rc);
}
+ rc = lfsck_layout_setup(env, lfsck);
+ if (rc < 0)
+ GOTO(out, rc);
+
/* XXX: more LFSCK components initialization to be added here. */
-add:
rc = lfsck_instance_add(lfsck);
+ if (rc == 0)
+ rc = lfsck_add_target_from_orphan(env, lfsck);
out:
+ if (obj != NULL && !IS_ERR(obj))
+ lfsck_object_put(env, obj);
+ if (root != NULL && !IS_ERR(root))
+ lfsck_object_put(env, root);
if (rc != 0)
lfsck_instance_cleanup(env, lfsck);
return rc;
}
EXPORT_SYMBOL(lfsck_degister);
+int lfsck_add_target(const struct lu_env *env, struct dt_device *key,
+ struct dt_device *tgt, struct obd_export *exp,
+ __u32 index, bool for_ost)
+{
+ struct lfsck_instance *lfsck;
+ struct lfsck_tgt_desc *ltd;
+ int rc;
+ ENTRY;
+
+ OBD_ALLOC_PTR(ltd);
+ if (ltd == NULL)
+ RETURN(-ENOMEM);
+
+ ltd->ltd_tgt = tgt;
+ ltd->ltd_key = key;
+ ltd->ltd_exp = exp;
+ INIT_LIST_HEAD(<d->ltd_orphan_list);
+ INIT_LIST_HEAD(<d->ltd_layout_list);
+ INIT_LIST_HEAD(<d->ltd_layout_phase_list);
+ INIT_LIST_HEAD(<d->ltd_namespace_list);
+ INIT_LIST_HEAD(<d->ltd_namespace_phase_list);
+ atomic_set(<d->ltd_ref, 1);
+ ltd->ltd_index = index;
+
+ spin_lock(&lfsck_instance_lock);
+ lfsck = __lfsck_instance_find(key, true, false);
+ if (lfsck == NULL) {
+ if (for_ost)
+ list_add_tail(<d->ltd_orphan_list,
+ &lfsck_ost_orphan_list);
+ else
+ list_add_tail(<d->ltd_orphan_list,
+ &lfsck_mdt_orphan_list);
+ spin_unlock(&lfsck_instance_lock);
+
+ RETURN(0);
+ }
+ spin_unlock(&lfsck_instance_lock);
+
+ rc = __lfsck_add_target(env, lfsck, ltd, for_ost, false);
+ if (rc != 0)
+ lfsck_tgt_put(ltd);
+
+ lfsck_instance_put(env, lfsck);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(lfsck_add_target);
+
+void lfsck_del_target(const struct lu_env *env, struct dt_device *key,
+ struct dt_device *tgt, __u32 index, bool for_ost)
+{
+ struct lfsck_instance *lfsck;
+ struct lfsck_tgt_descs *ltds;
+ struct lfsck_tgt_desc *ltd;
+ struct list_head *head;
+
+ if (for_ost)
+ head = &lfsck_ost_orphan_list;
+ else
+ head = &lfsck_mdt_orphan_list;
+
+ spin_lock(&lfsck_instance_lock);
+ list_for_each_entry(ltd, head, ltd_orphan_list) {
+ if (ltd->ltd_tgt == tgt) {
+ list_del_init(<d->ltd_orphan_list);
+ spin_unlock(&lfsck_instance_lock);
+ lfsck_tgt_put(ltd);
+
+ return;
+ }
+ }
+
+ ltd = NULL;
+ lfsck = __lfsck_instance_find(key, true, false);
+ spin_unlock(&lfsck_instance_lock);
+ if (unlikely(lfsck == NULL))
+ return;
+
+ if (for_ost)
+ ltds = &lfsck->li_ost_descs;
+ else
+ ltds = &lfsck->li_mdt_descs;
+
+ down_write(<ds->ltd_rw_sem);
+ LASSERT(ltds->ltd_tgts_bitmap != NULL);
+
+ if (unlikely(index >= ltds->ltd_tgts_bitmap->size))
+ goto unlock;
+
+ ltd = lfsck_ltd2tgt(ltds, index);
+ if (unlikely(ltd == NULL))
+ goto unlock;
+
+ LASSERT(ltds->ltd_tgtnr > 0);
+
+ ltds->ltd_tgtnr--;
+ cfs_bitmap_clear(ltds->ltd_tgts_bitmap, index);
+ lfsck_assign_tgt(ltds, NULL, index);
+
+unlock:
+ if (ltd == NULL) {
+ if (for_ost)
+ head = &lfsck->li_ost_descs.ltd_orphan;
+ else
+ head = &lfsck->li_mdt_descs.ltd_orphan;
+
+ list_for_each_entry(ltd, head, ltd_orphan_list) {
+ if (ltd->ltd_tgt == tgt) {
+ list_del_init(<d->ltd_orphan_list);
+ break;
+ }
+ }
+ }
+
+ up_write(<ds->ltd_rw_sem);
+ if (ltd != NULL) {
+ spin_lock(<ds->ltd_lock);
+ ltd->ltd_dead = 1;
+ spin_unlock(<ds->ltd_lock);
+ lfsck_stop_notify(env, lfsck, ltds, ltd, LFSCK_TYPE_NAMESPACE);
+ lfsck_stop_notify(env, lfsck, ltds, ltd, LFSCK_TYPE_LAYOUT);
+ lfsck_tgt_put(ltd);
+ }
+
+ lfsck_instance_put(env, lfsck);
+}
+EXPORT_SYMBOL(lfsck_del_target);
+
static int __init lfsck_init(void)
{
int rc;
+ INIT_LIST_HEAD(&lfsck_instance_list);
+ INIT_LIST_HEAD(&lfsck_ost_orphan_list);
+ INIT_LIST_HEAD(&lfsck_mdt_orphan_list);
lfsck_key_init_generic(&lfsck_thread_key, NULL);
rc = lu_context_key_register(&lfsck_thread_key);
+ if (rc == 0) {
+ tgt_register_lfsck_in_notify(lfsck_in_notify);
+ tgt_register_lfsck_query(lfsck_query);
+ }
+
return rc;
}
static void __exit lfsck_exit(void)
{
- LASSERT(cfs_list_empty(&lfsck_instance_list));
+ struct lfsck_tgt_desc *ltd;
+ struct lfsck_tgt_desc *next;
+
+ LASSERT(list_empty(&lfsck_instance_list));
+
+ list_for_each_entry_safe(ltd, next, &lfsck_ost_orphan_list,
+ ltd_orphan_list) {
+ list_del_init(<d->ltd_orphan_list);
+ lfsck_tgt_put(ltd);
+ }
+
+ list_for_each_entry_safe(ltd, next, &lfsck_mdt_orphan_list,
+ ltd_orphan_list) {
+ list_del_init(<d->ltd_orphan_list);
+ lfsck_tgt_put(ltd);
+ }
lu_context_key_degister(&lfsck_thread_key);
}
-MODULE_AUTHOR("Intel Corporation <http://www.intel.com/>");
-MODULE_DESCRIPTION("LFSCK");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre File System Checker");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
-cfs_module(lfsck, LUSTRE_VERSION_STRING, lfsck_init, lfsck_exit);
+module_init(lfsck_init);
+module_exit(lfsck_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff