*
* Author: Alex Zhuravlev <bzzz@whamcloud.com>
* Author: Mike Pershin <tappro@whamcloud.com>
+ * Author: Di Wang <di.wang@intel.com>
*/
#ifndef EXPORT_SYMTAB
return NULL;
}
+/**
+ * Lookup an existing OI by the given name.
+ */
+static int
+osd_oi_lookup(const struct lu_env *env, struct osd_device *o,
+ uint64_t parent, const char *name, struct osd_oi *oi)
+{
+ struct zpl_direntry *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
+ int rc;
+
+ rc = -zap_lookup(o->od_objset.os, parent, name, 8, 1, (void *)zde);
+ if (rc)
+ return rc;
+
+ strncpy(oi->oi_name, name, OSD_OI_NAME_SIZE - 1);
+ oi->oi_zapid = zde->zde_dnode;
+
+ return rc;
+}
+
+/**
+ * Create a new OI with the given name.
+ */
+static int
+osd_oi_create(const struct lu_env *env, struct osd_device *o,
+ uint64_t parent, const char *name, uint64_t *child)
+{
+ struct zpl_direntry *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
+ struct lu_attr *la = &osd_oti_get(env)->oti_la;
+ dmu_buf_t *db;
+ dmu_tx_t *tx;
+ int rc;
+
+ /* verify it doesn't already exist */
+ rc = -zap_lookup(o->od_objset.os, parent, name, 8, 1, (void *)zde);
+ if (rc == 0)
+ return -EEXIST;
+
+ /* create fid-to-dnode index */
+ tx = dmu_tx_create(o->od_objset.os);
+ if (tx == NULL)
+ return -ENOMEM;
+
+ dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, 1, NULL);
+ dmu_tx_hold_bonus(tx, parent);
+ dmu_tx_hold_zap(tx, parent, TRUE, name);
+ LASSERT(tx->tx_objset->os_sa);
+ dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
+
+ rc = -dmu_tx_assign(tx, TXG_WAIT);
+ if (rc) {
+ dmu_tx_abort(tx);
+ return rc;
+ }
+
+ la->la_valid = LA_MODE | LA_UID | LA_GID;
+ la->la_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;
+ la->la_uid = la->la_gid = 0;
+ __osd_zap_create(env, &o->od_objset, &db, tx, la, oi_tag, 0);
+
+ zde->zde_dnode = db->db_object;
+ zde->zde_pad = 0;
+ zde->zde_type = IFTODT(S_IFDIR);
+
+ rc = -zap_add(o->od_objset.os, parent, name, 8, 1, (void *)zde, tx);
+
+ dmu_tx_commit(tx);
+
+ *child = db->db_object;
+ sa_buf_rele(db, oi_tag);
+
+ return rc;
+}
+
+static int
+osd_oi_find_or_create(const struct lu_env *env, struct osd_device *o,
+ uint64_t parent, const char *name, uint64_t *child)
+{
+ struct osd_oi oi;
+ int rc;
+
+ rc = osd_oi_lookup(env, o, parent, name, &oi);
+ if (rc == 0)
+ *child = oi.oi_zapid;
+ else if (rc == -ENOENT)
+ rc = osd_oi_create(env, o, parent, name, child);
+
+ return rc;
+}
+
+/**
+ * Lookup the target index/flags of the fid, so it will know where
+ * the object is located (tgt index) and it is MDT or OST object.
+ */
+int osd_fld_lookup(const struct lu_env *env, struct osd_device *osd,
+ const struct lu_fid *fid, struct lu_seq_range *range)
+{
+ struct seq_server_site *ss = osd_seq_site(osd);
+ int rc;
+
+ if (fid_is_idif(fid)) {
+ range->lsr_flags = LU_SEQ_RANGE_OST;
+ range->lsr_index = fid_idif_ost_idx(fid);
+ return 0;
+ }
+
+ if (!fid_is_norm(fid)) {
+ range->lsr_flags = LU_SEQ_RANGE_MDT;
+ if (ss != NULL)
+ range->lsr_index = ss->ss_node_id;
+ return 0;
+ }
+
+ LASSERT(ss != NULL);
+ range->lsr_flags = -1;
+ rc = fld_server_lookup(env, ss->ss_server_fld, fid_seq(fid), range);
+ if (rc != 0) {
+ CERROR("%s can not find "DFID": rc = %d\n",
+ osd2lu_dev(osd)->ld_obd->obd_name, PFID(fid), rc);
+ }
+ return rc;
+}
+
+int fid_is_on_ost(const struct lu_env *env, struct osd_device *osd,
+ const struct lu_fid *fid)
+{
+ struct lu_seq_range *range = &osd_oti_get(env)->oti_seq_range;
+ int rc;
+ ENTRY;
+
+ if (fid_is_idif(fid))
+ RETURN(1);
+
+ rc = osd_fld_lookup(env, osd, fid, range);
+ if (rc != 0) {
+ CERROR("%s: Can not lookup fld for "DFID"\n",
+ osd2lu_dev(osd)->ld_obd->obd_name, PFID(fid));
+ RETURN(rc);
+ }
+
+ CDEBUG(D_INFO, "fid "DFID" range "DRANGE"\n", PFID(fid),
+ PRANGE(range));
+
+ if (range->lsr_flags == LU_SEQ_RANGE_OST)
+ RETURN(1);
+
+ RETURN(0);
+}
+
+static struct osd_seq *osd_seq_find_locked(struct osd_seq_list *seq_list,
+ obd_seq seq)
+{
+ struct osd_seq *osd_seq;
+
+ cfs_list_for_each_entry(osd_seq, &seq_list->osl_seq_list, os_seq_list) {
+ if (osd_seq->os_seq == seq)
+ return osd_seq;
+ }
+ return NULL;
+}
+
+static struct osd_seq *osd_seq_find(struct osd_seq_list *seq_list,
+ obd_seq seq)
+{
+ struct osd_seq *osd_seq;
+
+ read_lock(&seq_list->osl_seq_list_lock);
+ osd_seq = osd_seq_find_locked(seq_list, seq);
+ read_unlock(&seq_list->osl_seq_list_lock);
+
+ return osd_seq;
+}
+
+static struct osd_seq *osd_find_or_add_seq(const struct lu_env *env,
+ struct osd_device *osd, obd_seq seq)
+{
+ struct osd_seq_list *seq_list = &osd->od_seq_list;
+ struct osd_seq *osd_seq;
+ char *key = osd_oti_get(env)->oti_buf;
+ char *seq_name = osd_oti_get(env)->oti_str;
+ struct osd_oi oi;
+ uint64_t sdb, odb;
+ int i;
+ int rc = 0;
+ ENTRY;
+
+ osd_seq = osd_seq_find(seq_list, seq);
+ if (osd_seq != NULL)
+ RETURN(osd_seq);
+
+ down(&seq_list->osl_seq_init_sem);
+ /* Check again, in case some one else already add it
+ * to the list */
+ osd_seq = osd_seq_find(seq_list, seq);
+ if (osd_seq != NULL)
+ GOTO(out, rc = 0);
+
+ OBD_ALLOC_PTR(osd_seq);
+ if (osd_seq == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ CFS_INIT_LIST_HEAD(&osd_seq->os_seq_list);
+ osd_seq->os_seq = seq;
+
+ /* Init subdir count to be 32, but each seq can have
+ * different subdir count */
+ osd_seq->os_subdir_count = OSD_OST_MAP_SIZE;
+ OBD_ALLOC(osd_seq->os_compat_dirs,
+ sizeof(uint64_t) * osd_seq->os_subdir_count);
+ if (osd_seq->os_compat_dirs == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = osd_oi_lookup(env, osd, osd->od_root, "O", &oi);
+ if (rc != 0) {
+ CERROR("%s: Can not find O: rc = %d\n", osd_name(osd), rc);
+ GOTO(out, rc);
+ }
+
+ sprintf(seq_name, (fid_seq_is_rsvd(seq) ||
+ fid_seq_is_mdt0(seq)) ? LPU64 : LPX64i,
+ fid_seq_is_idif(seq) ? 0 : seq);
+
+ rc = osd_oi_create(env, osd, oi.oi_zapid, seq_name, &odb);
+ if (rc != 0) {
+ CERROR("%s: Can not create %s : rc = %d\n",
+ osd_name(osd), seq_name, rc);
+ GOTO(out, rc);
+ }
+
+ if (seq == 0)
+ osd->od_ost_compat_grp0 = odb;
+
+ for (i = 0; i < OSD_OST_MAP_SIZE; i++) {
+ sprintf(key, "d%d", i);
+ rc = osd_oi_find_or_create(env, osd, odb, key, &sdb);
+ if (rc)
+ GOTO(out, osd_seq = ERR_PTR(rc));
+ osd_seq->os_compat_dirs[i] = sdb;
+ }
+
+ write_lock(&seq_list->osl_seq_list_lock);
+ cfs_list_add(&osd_seq->os_seq_list, &seq_list->osl_seq_list);
+ write_unlock(&seq_list->osl_seq_list_lock);
+out:
+ up(&seq_list->osl_seq_init_sem);
+ if (rc != 0) {
+ if (osd_seq != NULL && osd_seq->os_compat_dirs != NULL)
+ OBD_FREE(osd_seq->os_compat_dirs,
+ sizeof(uint64_t) * osd_seq->os_subdir_count);
+ if (osd_seq != NULL)
+ OBD_FREE_PTR(osd_seq);
+ osd_seq = ERR_PTR(rc);
+ }
+ RETURN(osd_seq);
+}
+
/*
* objects w/o a natural reference (unlike a file on a MDS)
* are put under a special hierarchy /O/<seq>/d0..dXX
osd_get_idx_for_ost_obj(const struct lu_env *env, struct osd_device *osd,
const struct lu_fid *fid, char *buf)
{
+ struct osd_seq *osd_seq;
unsigned long b;
int rc;
+ osd_seq = osd_find_or_add_seq(env, osd, fid_seq(fid));
+ if (IS_ERR(osd_seq)) {
+ CERROR("%s: Can not find seq group "DFID"\n", osd_name(osd),
+ PFID(fid));
+ return PTR_ERR(osd_seq);
+ }
rc = fid_ostid_pack(fid, &osd_oti_get(env)->oti_ostid);
LASSERT(rc == 0); /* we should not get here with IGIF */
b = osd_oti_get(env)->oti_ostid.oi_id % OSD_OST_MAP_SIZE;
- LASSERT(osd->od_ost_compat_dirs[b]);
+ LASSERT(osd_seq->os_compat_dirs[b]);
sprintf(buf, LPU64, osd_oti_get(env)->oti_ostid.oi_id);
- return osd->od_ost_compat_dirs[b];
+ return osd_seq->os_compat_dirs[b];
}
/* XXX: f_ver is not counted, but may differ too */
LASSERT(fid);
LASSERT(buf);
- if (fid_is_idif(fid)) {
+ if (fid_is_on_ost(env, osd, fid) == 1) {
zapid = osd_get_idx_for_ost_obj(env, osd, fid, buf);
} else if (fid_is_last_id(fid)) {
zapid = osd->od_ost_compat_grp0;
}
/**
- * Lookup an existing OI by the given name.
- */
-static int
-osd_oi_lookup(const struct lu_env *env, struct osd_device *o,
- uint64_t parent, const char *name, struct osd_oi *oi)
-{
- struct zpl_direntry *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
- int rc;
-
- rc = -zap_lookup(o->od_objset.os, parent, name, 8, 1, (void *)zde);
- if (rc)
- return rc;
-
- strncpy(oi->oi_name, name, OSD_OI_NAME_SIZE - 1);
- oi->oi_zapid = zde->zde_dnode;
-
- return rc;
-}
-
-/**
- * Create a new OI with the given name.
- */
-static int
-osd_oi_create(const struct lu_env *env, struct osd_device *o,
- uint64_t parent, const char *name, uint64_t *child)
-{
- struct zpl_direntry *zde = &osd_oti_get(env)->oti_zde.lzd_reg;
- struct lu_attr *la = &osd_oti_get(env)->oti_la;
- dmu_buf_t *db;
- dmu_tx_t *tx;
- int rc;
-
- /* verify it doesn't already exist */
- rc = -zap_lookup(o->od_objset.os, parent, name, 8, 1, (void *)zde);
- if (rc == 0)
- return -EEXIST;
-
- /* create fid-to-dnode index */
- tx = dmu_tx_create(o->od_objset.os);
- if (tx == NULL)
- return -ENOMEM;
-
- dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, 1, NULL);
- dmu_tx_hold_bonus(tx, parent);
- dmu_tx_hold_zap(tx, parent, TRUE, name);
- LASSERT(tx->tx_objset->os_sa);
- dmu_tx_hold_sa_create(tx, ZFS_SA_BASE_ATTR_SIZE);
-
- rc = -dmu_tx_assign(tx, TXG_WAIT);
- if (rc) {
- dmu_tx_abort(tx);
- return rc;
- }
-
- la->la_valid = LA_MODE | LA_UID | LA_GID;
- la->la_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;
- la->la_uid = la->la_gid = 0;
- __osd_zap_create(env, &o->od_objset, &db, tx, la, oi_tag, 0);
-
- zde->zde_dnode = db->db_object;
- zde->zde_pad = 0;
- zde->zde_type = IFTODT(S_IFDIR);
-
- rc = -zap_add(o->od_objset.os, parent, name, 8, 1, (void *)zde, tx);
-
- dmu_tx_commit(tx);
-
- *child = db->db_object;
- sa_buf_rele(db, oi_tag);
-
- return rc;
-}
-
-static int
-osd_oi_find_or_create(const struct lu_env *env, struct osd_device *o,
- uint64_t parent, const char *name, uint64_t *child)
-{
- struct osd_oi oi;
- int rc;
-
- rc = osd_oi_lookup(env, o, parent, name, &oi);
- if (rc == 0) {
- *child = oi.oi_zapid;
- } else if (rc == -ENOENT) {
- rc = osd_oi_create(env, o, parent, name, child);
- }
-
- return rc;
-}
-
-/**
* Close an entry in a specific slot.
*/
static void
RETURN(0);
}
+static void osd_ost_seq_init(const struct lu_env *env, struct osd_device *osd)
+{
+ struct osd_seq_list *osl = &osd->od_seq_list;
+
+ CFS_INIT_LIST_HEAD(&osl->osl_seq_list);
+ rwlock_init(&osl->osl_seq_list_lock);
+ sema_init(&osl->osl_seq_init_sem, 1);
+}
+
+static void osd_ost_seq_fini(const struct lu_env *env, struct osd_device *osd)
+{
+ struct osd_seq_list *osl = &osd->od_seq_list;
+ struct osd_seq *osd_seq, *tmp;
+
+ write_lock(&osl->osl_seq_list_lock);
+ cfs_list_for_each_entry_safe(osd_seq, tmp, &osl->osl_seq_list,
+ os_seq_list) {
+ cfs_list_del(&osd_seq->os_seq_list);
+ OBD_FREE(osd_seq->os_compat_dirs,
+ sizeof(uint64_t) * osd_seq->os_subdir_count);
+ OBD_FREE(osd_seq, sizeof(*osd_seq));
+ }
+ write_unlock(&osl->osl_seq_list_lock);
+
+ return;
+}
+
/**
* Create /O subdirectory to map legacy OST objects for compatibility.
*/
static int
osd_oi_init_compat(const struct lu_env *env, struct osd_device *o)
{
- char *key = osd_oti_get(env)->oti_buf;
uint64_t odb, sdb;
- int i, rc;
+ int rc;
ENTRY;
rc = osd_oi_find_or_create(env, o, o->od_root, "O", &sdb);
if (rc)
RETURN(rc);
- /* create /O/0 subdirectory to map legacy OST objects */
- rc = osd_oi_find_or_create(env, o, sdb, "0", &odb);
- if (rc)
- RETURN(rc);
-
- o->od_ost_compat_grp0 = odb;
-
- for (i = 0; i < OSD_OST_MAP_SIZE; i++) {
- sprintf(key, "d%d", i);
- rc = osd_oi_find_or_create(env, o, odb, key, &sdb);
- if (rc)
- RETURN(rc);
-
- o->od_ost_compat_dirs[i] = sdb;
- }
-
+ osd_ost_seq_init(env, o);
/* Create on-disk indexes to maintain per-UID/GID inode usage.
* Those new indexes are created in the top-level ZAP outside the
* namespace in order not to confuse ZPL which might interpret those
{
ENTRY;
+ osd_ost_seq_fini(env, o);
+
if (o->od_oi_table != NULL) {
(void) osd_oi_close_table(env, o);
OBD_FREE(o->od_oi_table,
git://git.whamcloud.com / fs / lustre-release.git / commitdiff