* GPL HEADER END
*/
/*
- * Copyright (c) 2013, Intel Corporation.
+ * Copyright (c) 2013, 2014, Intel Corporation.
*/
/*
* lustre/lfsck/lfsck_internal.h
#include <md_object.h>
#include <lustre_linkea.h>
-#define HALF_SEC (HZ >> 1)
+#define HALF_SEC msecs_to_jiffies(MSEC_PER_SEC >> 1)
#define LFSCK_CHECKPOINT_INTERVAL 60
enum lfsck_flags {
LNTF_CHECK_PARENT = 0x02,
LNTF_SKIP_NLINK = 0x04,
LNTF_CHECK_ORPHAN = 0x08,
+ LNTF_UNCERTAIN_LMV = 0x10,
+ LNTF_RECHECK_NAME_HASH = 0x20,
LNTF_ALL = 0xff
};
__u8 ll_ost_bitmap[0];
};
+struct lfsck_assistant_object {
+ struct lu_fid lso_fid;
+ __u64 lso_oit_cookie;
+ struct lu_attr lso_attr;
+ atomic_t lso_ref;
+ unsigned int lso_dead:1,
+ lso_is_dir:1;
+};
+
struct lfsck_component;
struct lfsck_tgt_descs;
struct lfsck_tgt_desc;
int (*lfsck_exec_dir)(const struct lu_env *env,
struct lfsck_component *com,
+ struct lfsck_assistant_object *lso,
struct lu_dirent *ent,
__u16 type);
unsigned int ltd_dead:1,
ltd_layout_done:1,
ltd_namespace_done:1,
- ltd_namespace_failed:1;
+ ltd_synced_failures:1;
};
struct lfsck_tgt_desc_idx {
__u32 ltd_tgtnr;
};
-#define LTD_TGT(ltd, index) \
- ((ltd)->ltd_tgts_idx[(index) / TGT_PTRS_PER_BLOCK]->\
- ldi_tgts[(index) % TGT_PTRS_PER_BLOCK])
+static inline struct lfsck_tgt_desc *
+lfsck_ltd2tgt(struct lfsck_tgt_descs *ltd, __u32 index)
+{
+ __u32 idx1 = index / TGT_PTRS_PER_BLOCK;
+ __u32 idx2 = index % TGT_PTRS_PER_BLOCK;
+ struct lfsck_tgt_desc *__tgt = NULL;
+
+ if (unlikely(idx1 >= TGT_PTRS))
+ CDEBUG(D_LFSCK, "The target idx %u is invalid.\n", index);
+ else if (likely(ltd->ltd_tgts_idx[idx1] != NULL))
+ __tgt = ltd->ltd_tgts_idx[idx1]->ldi_tgts[idx2];
-#define OST_TGT(lfsck, index) LTD_TGT(&lfsck->li_ost_descs, index)
-#define MDT_TGT(lfsck, index) LTD_TGT(&lfsck->li_mdt_descs, index)
+ return __tgt;
+}
+
+static inline void lfsck_assign_tgt(struct lfsck_tgt_descs *ltd,
+ struct lfsck_tgt_desc *tgt, __u32 index)
+{
+ __u32 idx1 = index / TGT_PTRS_PER_BLOCK;
+ __u32 idx2 = index % TGT_PTRS_PER_BLOCK;
+
+ if (likely(idx1 < TGT_PTRS && ltd->ltd_tgts_idx[idx1] != NULL))
+ ltd->ltd_tgts_idx[idx1]->ldi_tgts[idx2] = tgt;
+}
+
+#define LFSCK_STF_BITS 4
+/* If want to adjust the LFSCK_STF_COUNT, please change LFSCK_STF_BITS. */
+#define LFSCK_STF_COUNT (1 << LFSCK_STF_BITS)
+
+struct lfsck_sub_trace_obj {
+ struct dt_object *lsto_obj;
+ struct mutex lsto_mutex;
+};
struct lfsck_component {
/* into lfsck_instance::li_list_(scan,double_scan,idle} */
struct lfsck_position lc_pos_start;
struct lfsck_instance *lc_lfsck;
struct dt_object *lc_obj;
+ struct lfsck_sub_trace_obj lc_sub_trace_objs[LFSCK_STF_COUNT];
struct lfsck_operations *lc_ops;
void *lc_file_ram;
void *lc_file_disk;
#define LFSCK_LMV_MAX_STRIPES LMV_MAX_STRIPE_COUNT
#define LFSCK_LMV_DEF_STRIPES 4
+/* Warning: NOT change the lfsck_slave_lmv_flags members order,
+ * otherwise the lfsck_record_lmv() may be wrong. */
+enum lfsck_slave_lmv_flags {
+ LSLF_NONE = 0,
+ LSLF_BAD_INDEX2 = 1,
+ LSLF_NO_LMVEA = 2,
+ LSLF_DANGLING = 3,
+ LSLF_BAD_INDEX1 = 4,
+};
+
+/* When the namespace LFSCK scans a striped directory, it will record all
+ * the known shards' information in the structure "lfsck_slave_lmv_rec",
+ * including the shard's FID, index, slave LMV EA, and so on. Each shard
+ * will take one lfsck_slave_lmv_rec slot. After the 1st cycle scanning
+ * the striped directory, the LFSCK will get all the information about
+ * whether there are some inconsistency, and then it can repair them in
+ * the 2nd cycle scanning. */
struct lfsck_slave_lmv_rec {
struct lu_fid lslr_fid;
__u32 lslr_stripe_count;
struct lfsck_slave_lmv_rec *ll_lslr;
};
+/* If the namespace LFSCK finds that the master MDT-object of a striped
+ * directory lost its master LMV EA, it will re-generate the master LMV
+ * EA and notify the LFSCK instance on the MDT on which the striped dir
+ * master MDT-object resides to rescan the striped directory. To do that,
+ * the notify handler will insert a "lfsck_lmv_unit" structure into the
+ * lfsck::li_list_lmv. The LFSCK instance will scan such list from time
+ * to time to check whether needs to rescan some stirped directories. */
+struct lfsck_lmv_unit {
+ struct list_head llu_link;
+ struct lfsck_lmv llu_lmv;
+ struct dt_object *llu_obj;
+ struct lfsck_instance *llu_lfsck;
+};
+
+struct lfsck_rec_lmv_save {
+ struct lu_fid lrls_fid;
+ struct lmv_mds_md_v1 lrls_lmv;
+};
+
+/* Allow lfsck_record_lmv() to be called recursively at most three times. */
+#define LFSCK_REC_LMV_MAX_DEPTH 3
+
struct lfsck_instance {
struct mutex li_mutex;
spinlock_t li_lock;
/* For the components those are not scanning now. */
struct list_head li_list_idle;
+ /* For the lfsck_lmv_unit to be handled. */
+ struct list_head li_list_lmv;
+
atomic_t li_ref;
atomic_t li_double_scan_count;
struct ptlrpc_thread li_thread;
struct local_oid_storage *li_los;
struct lu_fid li_local_root_fid; /* backend root "/" */
struct lu_fid li_global_root_fid; /* /ROOT */
+ struct dt_object *li_lfsck_dir;
struct dt_object *li_bookmark_obj;
struct dt_object *li_lpf_obj;
+ struct dt_object *li_lpf_root_obj;
struct lu_client_seq *li_seq;
struct lfsck_bookmark li_bookmark_ram;
struct lfsck_bookmark li_bookmark_disk;
li_master:1, /* Master instance or not. */
li_current_oit_processed:1,
li_start_unplug:1;
+ struct lfsck_rec_lmv_save li_rec_lmv_save[LFSCK_REC_LMV_MAX_DEPTH];
};
struct lfsck_async_interpret_args {
};
struct lfsck_assistant_req {
- struct list_head lar_list;
+ struct list_head lar_list;
+ struct lfsck_assistant_object *lar_parent;
};
struct lfsck_namespace_req {
struct lfsck_assistant_req lnr_lar;
- struct dt_object *lnr_obj;
struct lfsck_lmv *lnr_lmv;
struct lu_fid lnr_fid;
- __u64 lnr_oit_cookie;
__u64 lnr_dir_cookie;
__u32 lnr_attr;
__u32 lnr_size;
char lnr_name[0];
};
+struct lfsck_layout_req {
+ struct lfsck_assistant_req llr_lar;
+ struct dt_object *llr_child;
+ __u32 llr_ost_idx;
+ __u32 llr_lov_idx; /* offset in LOV EA */
+};
+
struct lfsck_assistant_operations {
int (*la_handler_p1)(const struct lu_env *env,
struct lfsck_component *com,
lad_in_double_scan:1,
lad_exit:1,
lad_incomplete:1;
+ bool lad_advance_lock;
};
#define LFSCK_TMPBUF_LEN 64
+struct lfsck_lock_handle {
+ struct lustre_handle llh_pdo_lh;
+ struct lustre_handle llh_reg_lh;
+ ldlm_mode_t llh_pdo_mode;
+ ldlm_mode_t llh_reg_mode;
+};
+
struct lfsck_thread_info {
struct lu_name lti_name_const;
struct lu_name lti_name;
struct lu_fid lti_fid;
struct lu_fid lti_fid2;
struct lu_fid lti_fid3;
- struct lu_fid lti_fid4;
- struct lu_fid lti_fid5;
struct lu_attr lti_la;
struct lu_attr lti_la2;
- struct lu_attr lti_la3;
struct ost_id lti_oi;
union {
struct lustre_mdt_attrs lti_lma;
struct lfsck_start lti_start;
struct lfsck_stop lti_stop;
ldlm_policy_data_t lti_policy;
+ struct ldlm_enqueue_info lti_einfo;
struct ldlm_res_id lti_resid;
union {
struct filter_fid_old lti_old_pfid;
struct lmv_mds_md_v1 lti_lmv2;
struct lmv_mds_md_v1 lti_lmv3;
struct lmv_mds_md_v1 lti_lmv4;
+ struct lfsck_lock_handle lti_llh;
};
/* lfsck_lib.c */
struct dt_object *obj, struct lustre_handle *lh,
__u64 bits, ldlm_mode_t mode);
void lfsck_ibits_unlock(struct lustre_handle *lh, ldlm_mode_t mode);
+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, ldlm_mode_t mode);
+void lfsck_unlock(struct lfsck_lock_handle *llh);
int lfsck_find_mdt_idx_by_fid(const struct lu_env *env,
struct lfsck_instance *lfsck,
const struct lu_fid *fid);
-int lfsck_create_lpf(const struct lu_env *env, struct lfsck_instance *lfsck);
int lfsck_verify_lpf(const struct lu_env *env, struct lfsck_instance *lfsck);
struct lfsck_instance *lfsck_instance_find(struct dt_device *key, bool ref,
bool unlink);
struct lfsck_instance *lfsck);
int lfsck_bits_dump(struct seq_file *m, int bits, const char *names[],
const char *prefix);
-int lfsck_time_dump(struct seq_file *m, __u64 time, const char *prefix);
+int lfsck_time_dump(struct seq_file *m, __u64 time, const char *name);
int lfsck_pos_dump(struct seq_file *m, struct lfsck_position *pos,
const char *prefix);
void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
struct lfsck_assistant_data *
lfsck_assistant_data_init(struct lfsck_assistant_operations *lao,
const char *name);
+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 dt_object *
+lfsck_assistant_object_load(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ struct lfsck_assistant_object *lso);
int lfsck_async_interpret_common(const struct lu_env *env,
struct ptlrpc_request *req,
void *args, int rc);
/* lfsck_engine.c */
int lfsck_unpack_ent(struct lu_dirent *ent, __u64 *cookie, __u16 *type);
+void lfsck_close_dir(const struct lu_env *env,
+ struct lfsck_instance *lfsck, int result);
+int lfsck_open_dir(const struct lu_env *env,
+ struct lfsck_instance *lfsck, __u64 cookie);
int lfsck_master_engine(void *args);
int lfsck_assistant_engine(void *args);
struct lfsck_component *com,
const struct lu_fid *fid,
const __u8 flags, bool add);
+int lfsck_namespace_check_exist(const struct lu_env *env,
+ struct dt_object *dir,
+ struct dt_object *obj, const char *name);
int __lfsck_links_read(const struct lu_env *env, struct dt_object *obj,
struct linkea_data *ldata);
int lfsck_namespace_rebuild_linkea(const struct lu_env *env,
struct linkea_data *ldata);
int lfsck_namespace_repair_dangling(const struct lu_env *env,
struct lfsck_component *com,
+ struct dt_object *parent,
struct dt_object *child,
struct lfsck_namespace_req *lnr);
int lfsck_namespace_repair_dirent(const struct lu_env *env,
struct dt_object *child,
const char *name, const char *name2,
__u16 type, bool update, bool dec);
-int lfsck_verify_linkea(const struct lu_env *env, struct dt_device *dev,
- struct dt_object *obj, const struct lu_name *cname,
- const struct lu_fid *pfid);
+int lfsck_verify_linkea(const struct lu_env *env, struct dt_object *obj,
+ const struct lu_name *cname, const struct lu_fid *pfid);
int lfsck_links_get_first(const struct lu_env *env, struct dt_object *obj,
char *name, struct lu_fid *pfid);
-int lfsck_remove_name_entry(const struct lu_env *env,
- struct lfsck_instance *lfsck,
- struct dt_object *parent,
- const char *name, __u32 type);
int lfsck_update_name_entry(const struct lu_env *env,
struct lfsck_instance *lfsck,
- struct dt_object *parent, const char *name,
- const struct lu_fid *pfid, __u32 type);
+ struct dt_object *dir, const char *name,
+ const struct lu_fid *fid, __u32 type);
int lfsck_namespace_setup(const struct lu_env *env,
struct lfsck_instance *lfsck);
struct dt_object *parent,
struct dt_object *child,
const struct lu_name *cname);
+int lfsck_namespace_update_lmv(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *obj,
+ struct lmv_mds_md_v1 *lmv, bool locked);
int lfsck_namespace_verify_stripe_slave(const struct lu_env *env,
struct lfsck_component *com,
struct dt_object *obj,
struct lfsck_lmv *llmv);
+int lfsck_namespace_scan_shard(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *child);
+int lfsck_namespace_notify_lmv_master_local(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *obj);
+int lfsck_namespace_repair_bad_name_hash(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct dt_object *shard,
+ struct lfsck_lmv *llmv,
+ const char *name);
+int lfsck_namespace_striped_dir_rescan(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_namespace_req *lnr);
+int lfsck_namespace_handle_striped_master(const struct lu_env *env,
+ struct lfsck_component *com,
+ struct lfsck_namespace_req *lnr);
/* lfsck_layout.c */
int lfsck_layout_setup(const struct lu_env *env, struct lfsck_instance *lfsck);
(namelen == 1 || (namelen == 2 && name[1] == '.'));
}
-static inline struct dt_device *lfsck_obj2dt_dev(struct dt_object *obj)
+static inline struct dt_device *lfsck_obj2dev(struct dt_object *obj)
{
return container_of0(obj->do_lu.lo_dev, struct dt_device, dd_lu_dev);
}
lu_object_put(env, &obj->do_lu);
}
-static inline u32 lfsck_dev_idx(struct dt_device *dev)
+static inline struct seq_server_site
+*lfsck_dev_site(struct lfsck_instance *lfsck)
+{
+ return lu_site2seq(lfsck->li_bottom->dd_lu_dev.ld_site);
+}
+
+static inline u32 lfsck_dev_idx(struct lfsck_instance *lfsck)
{
- return dev->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
+ return lfsck_dev_site(lfsck)->ss_node_id;
}
static inline struct dt_object *
const struct lu_fid *fid)
{
struct lu_object_conf *conf = &lfsck_env_info(env)->lti_conf;
- struct dt_object *obj;
conf->loc_flags = LOC_F_NOWAIT;
- obj = lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, conf));
- if (unlikely(obj == NULL))
- return ERR_PTR(-ENOENT);
-
- return obj;
+ return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, conf));
}
static inline struct dt_object *
lfsck_object_find_by_dev(const struct lu_env *env, struct dt_device *dev,
const struct lu_fid *fid)
{
- struct dt_object *obj;
-
- obj = lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, NULL));
- if (unlikely(obj == NULL))
- return ERR_PTR(-ENOENT);
-
- return obj;
-}
-
-static inline struct dt_object *lfsck_object_find(const struct lu_env *env,
- struct lfsck_instance *lfsck,
- const struct lu_fid *fid)
-{
- return lfsck_object_find_by_dev(env, lfsck->li_next, fid);
+ return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, NULL));
}
-static inline struct dt_object *
-lfsck_object_find_bottom(const struct lu_env *env, struct lfsck_instance *lfsck,
- const struct lu_fid *fid)
+static inline struct dt_device *
+lfsck_find_dev_by_fid(const struct lu_env *env, struct lfsck_instance *lfsck,
+ const struct lu_fid *fid)
{
struct dt_device *dev;
int idx;
+ if (!lfsck->li_master)
+ return lfsck->li_bottom;
+
idx = lfsck_find_mdt_idx_by_fid(env, lfsck, fid);
if (idx < 0)
return ERR_PTR(idx);
- if (idx == lfsck_dev_idx(lfsck->li_bottom)) {
+ if (idx == lfsck_dev_idx(lfsck)) {
dev = lfsck->li_bottom;
} else {
struct lfsck_tgt_desc *ltd;
- ltd = LTD_TGT(&lfsck->li_mdt_descs, idx);
+ ltd = lfsck_ltd2tgt(&lfsck->li_mdt_descs, idx);
if (unlikely(ltd == NULL))
return ERR_PTR(-ENODEV);
dev = ltd->ltd_tgt;
}
+ return dev;
+}
+
+static inline struct dt_object *
+lfsck_object_find_bottom(const struct lu_env *env, struct lfsck_instance *lfsck,
+ const struct lu_fid *fid)
+{
+ struct dt_device *dev;
+
+ dev = lfsck_find_dev_by_fid(env, lfsck, fid);
+ if (IS_ERR(dev))
+ return (struct dt_object *)dev;
+
return lfsck_object_find_by_dev(env, dev, fid);
}
+static inline struct dt_object *
+lfsck_object_find_bottom_nowait(const struct lu_env *env,
+ struct lfsck_instance *lfsck,
+ const struct lu_fid *fid)
+{
+ struct dt_device *dev;
+
+ dev = lfsck_find_dev_by_fid(env, lfsck, fid);
+ if (IS_ERR(dev))
+ return (struct dt_object *)dev;
+
+ return lfsck_object_find_by_dev_nowait(env, dev, fid);
+}
+
+static inline struct dt_object *
+lfsck_object_locate(struct dt_device *dev, struct dt_object *obj)
+{
+ if (lfsck_obj2dev(obj) == dev) {
+ return obj;
+ } else {
+ struct lu_object *lo;
+
+ lo = lu_object_locate(obj->do_lu.lo_header,
+ dev->dd_lu_dev.ld_type);
+ if (unlikely(lo == NULL))
+ return ERR_PTR(-ENOENT);
+
+ return lu2dt(lo);
+ }
+}
+
static inline struct lfsck_tgt_desc *lfsck_tgt_get(struct lfsck_tgt_descs *ltds,
__u32 index)
{
struct lfsck_tgt_desc *ltd;
- ltd = LTD_TGT(ltds, index);
+ ltd = lfsck_ltd2tgt(ltds, index);
if (ltd != NULL)
atomic_inc(<d->ltd_ref);
struct lfsck_component *com)
{
if (atomic_dec_and_test(&com->lc_ref)) {
+ struct lfsck_sub_trace_obj *lsto;
+ int i;
+
+ for (i = 0, lsto = &com->lc_sub_trace_objs[0];
+ i < LFSCK_STF_COUNT; i++, lsto++) {
+ if (lsto->lsto_obj != NULL)
+ lfsck_object_put(env, lsto->lsto_obj);
+ }
+
if (com->lc_obj != NULL)
- lu_object_put_nocache(env, &com->lc_obj->do_lu);
+ lfsck_object_put(env, com->lc_obj);
if (com->lc_file_ram != NULL)
OBD_FREE(com->lc_file_ram, com->lc_file_size);
if (com->lc_file_disk != NULL)
return llmv;
}
+static inline int lfsck_sub_trace_file_fid2idx(const struct lu_fid *fid)
+{
+ return fid->f_oid & (LFSCK_STF_COUNT - 1);
+}
+
static inline void lfsck_lmv_header_le_to_cpu(struct lmv_mds_md_v1 *dst,
const struct lmv_mds_md_v1 *src)
{
dst->lmv_hash_type = cpu_to_le32(src->lmv_hash_type);
dst->lmv_layout_version = cpu_to_le32(src->lmv_layout_version);
}
+
+static inline struct lfsck_assistant_object *
+lfsck_assistant_object_get(struct lfsck_assistant_object *lso)
+{
+ atomic_inc(&lso->lso_ref);
+
+ return lso;
+}
+
+static inline void
+lfsck_assistant_object_put(const struct lu_env *env,
+ struct lfsck_assistant_object *lso)
+{
+ if (atomic_dec_and_test(&lso->lso_ref))
+ OBD_FREE_PTR(lso);
+}
#endif /* _LFSCK_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff