* 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
};
/* How many objects under /lost+found failed to be processed. */
__u64 ln_local_lpf_failed;
+ /* How many striped directories (master) have been scanned. */
+ __u64 ln_striped_dirs_scanned;
+
+ /* How many striped directories (master) have been repaired. */
+ __u64 ln_striped_dirs_repaired;
+
+ /* How many striped directories (master) failed verification. */
+ __u64 ln_striped_dirs_failed;
+
+ /* How many striped directories (master) has been disabled. */
+ __u64 ln_striped_dirs_disabled;
+
+ /* How many striped directory's (master) have been skipped
+ * (for shards verification) because of lost master LMV EA. */
+ __u64 ln_striped_dirs_skipped;
+
+ /* How many striped directory's shards (slave) have been scanned. */
+ __u64 ln_striped_shards_scanned;
+
+ /* How many striped directory's shards (slave) have been repaired. */
+ __u64 ln_striped_shards_repaired;
+
+ /* How many striped directory's shards (slave) failed verification. */
+ __u64 ln_striped_shards_failed;
+
+ /* How many striped directory's shards (slave) have been skipped
+ * (for name hash verification) because do not know whether the slave
+ * LMV EA is valid or not. */
+ __u64 ln_striped_shards_skipped;
+
+ /* How many name entries under striped directory with bad name
+ * hash have been repaired. */
+ __u64 ln_name_hash_repaired;
+
/* The size of MDT targets bitmap with nbits. Such bitmap records
* the MDTs that contain non-verified MDT-objects. */
__u32 ln_bitmap_size;
__u32 ln_reserved_1;
/* For further using. 256-bytes aligned now. */
- __u64 ln_reserved[25];
+ __u64 ln_reserved[15];
};
enum lfsck_layout_inconsistency_type {
struct lfsck_component *com,
bool new_checked);
+ void (*lfsck_close_dir)(const struct lu_env *env,
+ struct lfsck_component *com);
+
+ int (*lfsck_open_dir)(const struct lu_env *env,
+ struct lfsck_component *com);
+
int (*lfsck_checkpoint)(const struct lu_env *env,
struct lfsck_component *com,
bool init);
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 {
#define OST_TGT(lfsck, index) LTD_TGT(&lfsck->li_ost_descs, index)
#define MDT_TGT(lfsck, index) LTD_TGT(&lfsck->li_mdt_descs, index)
+#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 list_head lc_link;
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;
__u16 lc_type;
};
+#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;
+ __u32 lslr_index; /* the index in name or in slave lmv */
+ __u32 lslr_hash_type;
+ __u32 lslr_flags;
+};
+
+struct lfsck_lmv {
+ struct lmv_mds_md_v1 ll_lmv;
+ atomic_t ll_ref;
+ int ll_stripes_allocated;
+ int ll_stripes_filled;
+ int ll_exit_value;
+ __u32 ll_max_stripe_count;
+ __u32 ll_max_filled_off;
+ __u32 ll_hash_type;
+ unsigned int ll_lmv_master:1,
+ ll_lmv_slave:1,
+ ll_lmv_verified:1,
+ ll_lmv_updated:1,
+ ll_inline:1,
+ ll_failed:1,
+ ll_ignore:1;
+ 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;
struct lfsck_position li_pos_current;
struct lfsck_position li_pos_checkpoint;
+ struct lfsck_lmv *li_lmv;
+
/* Obj for otable-based iteration */
struct dt_object *li_obj_oit;
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_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;
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;
/* There will be '\0' at the end of the name. */
char lti_key[sizeof(struct lu_dirent) + NAME_MAX + 1];
char lti_tmpbuf[LFSCK_TMPBUF_LEN];
+ char lti_tmpbuf2[LFSCK_TMPBUF_LEN];
struct lfsck_request lti_lr;
struct lfsck_async_interpret_args lti_laia;
struct lfsck_async_interpret_args lti_laia2;
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 dt_insert_rec lti_dt_rec;
struct lu_object_conf lti_conf;
struct lu_seq_range lti_range;
+ struct lmv_mds_md_v1 lti_lmv;
+ struct lmv_mds_md_v1 lti_lmv2;
+ struct lmv_mds_md_v1 lti_lmv3;
+ struct lmv_mds_md_v1 lti_lmv4;
};
/* lfsck_lib.c */
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);
/* 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,
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,
int lfsck_namespace_setup(const struct lu_env *env,
struct lfsck_instance *lfsck);
+/* lfsck_striped_dir.c */
+void lfsck_lmv_put(const struct lu_env *env, struct lfsck_lmv *llmv);
+int lfsck_read_stripe_lmv(const struct lu_env *env, struct dt_object *obj,
+ struct lmv_mds_md_v1 *lmv);
+int lfsck_shard_name_to_index(const struct lu_env *env, const char *name,
+ int namelen, __u16 type,
+ const struct lu_fid *fid);
+bool lfsck_is_valid_slave_name_entry(const struct lu_env *env,
+ struct lfsck_lmv *llmv,
+ const char *name, int namelen);
+int lfsck_namespace_check_name(const struct lu_env *env,
+ 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);
extern const char *lfsck_param_names[];
extern struct lu_context_key lfsck_thread_key;
+static inline bool name_is_dot_or_dotdot(const char *name, int namelen)
+{
+ return name[0] == '.' &&
+ (namelen == 1 || (namelen == 2 && name[1] == '.'));
+}
+
static inline struct dt_device *lfsck_obj2dt_dev(struct dt_object *obj)
{
return container_of0(obj->do_lu.lo_dev, struct dt_device, dd_lu_dev);
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;
+ return lu2dt(lu_object_find_slice(env, dt2lu_dev(dev), fid, NULL));
}
static inline struct dt_object *lfsck_object_find(const struct lu_env *env,
return lfsck_object_find_by_dev(env, lfsck->li_next, fid);
}
-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;
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 lfsck_tgt_desc *lfsck_tgt_get(struct lfsck_tgt_descs *ltds,
__u32 index)
{
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)
+ lu_object_put(env, &lsto->lsto_obj->do_lu);
+ }
+
if (com->lc_obj != NULL)
lu_object_put_nocache(env, &com->lc_obj->do_lu);
if (com->lc_file_ram != NULL)
return __lfsck_links_read(env, obj, ldata);
}
+static inline struct lfsck_lmv *lfsck_lmv_get(struct lfsck_lmv *llmv)
+{
+ if (llmv != NULL)
+ atomic_inc(&llmv->ll_ref);
+
+ 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_magic = le32_to_cpu(src->lmv_magic);
+ dst->lmv_stripe_count = le32_to_cpu(src->lmv_stripe_count);
+ dst->lmv_master_mdt_index = le32_to_cpu(src->lmv_master_mdt_index);
+ dst->lmv_hash_type = le32_to_cpu(src->lmv_hash_type);
+ dst->lmv_layout_version = le32_to_cpu(src->lmv_layout_version);
+}
+
+static inline void lfsck_lmv_header_cpu_to_le(struct lmv_mds_md_v1 *dst,
+ const struct lmv_mds_md_v1 *src)
+{
+ dst->lmv_magic = cpu_to_le32(src->lmv_magic);
+ dst->lmv_stripe_count = cpu_to_le32(src->lmv_stripe_count);
+ dst->lmv_master_mdt_index = cpu_to_le32(src->lmv_master_mdt_index);
+ dst->lmv_hash_type = cpu_to_le32(src->lmv_hash_type);
+ dst->lmv_layout_version = cpu_to_le32(src->lmv_layout_version);
+}
#endif /* _LFSCK_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff