*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
- */
-/*
- * Copyright (c) 2012, 2013, Intel Corporation.
- * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Di Wang <di.wang@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_OSD
-#include <lustre_ver.h>
#include <libcfs/libcfs.h>
#include <obd_support.h>
#include <lustre_net.h>
#include <sys/sa_impl.h>
#include <sys/txg.h>
-static char *oi_tag = "osd_mount, oi";
-
#define OSD_OI_FID_NR (1UL << 7)
#define OSD_OI_FID_NR_MAX (1UL << OSD_OI_FID_OID_BITS_MAX)
unsigned int osd_oi_count = OSD_OI_FID_NR;
};
static const struct named_oid oids[] = {
- { LAST_RECV_OID, LAST_RCVD },
- { OFD_LAST_GROUP_OID, "LAST_GROUP" },
- { LLOG_CATALOGS_OID, "CATALOGS" },
- { MGS_CONFIGS_OID, NULL /*MOUNT_CONFIGS_DIR*/ },
- { FID_SEQ_SRV_OID, "seq_srv" },
- { FID_SEQ_CTL_OID, "seq_ctl" },
- { FLD_INDEX_OID, "fld" },
- { MDD_LOV_OBJ_OID, LOV_OBJID },
- { OFD_HEALTH_CHECK_OID, HEALTH_CHECK },
- { ACCT_USER_OID, "acct_usr_inode" },
- { ACCT_GROUP_OID, "acct_grp_inode" },
- { 0, NULL }
+ { .oid = LAST_RECV_OID, .name = LAST_RCVD },
+ { .oid = OFD_LAST_GROUP_OID, .name = "LAST_GROUP" },
+ { .oid = LLOG_CATALOGS_OID, .name = "CATALOGS" },
+ { .oid = MGS_CONFIGS_OID, /*MOUNT_CONFIGS_DIR*/ },
+ { .oid = FID_SEQ_SRV_OID, .name = "seq_srv" },
+ { .oid = FID_SEQ_CTL_OID, .name = "seq_ctl" },
+ { .oid = FLD_INDEX_OID, .name = "fld" },
+ { .oid = MDD_LOV_OBJ_OID, .name = LOV_OBJID },
+ { .oid = OFD_HEALTH_CHECK_OID, .name = HEALTH_CHECK },
+ { .oid = REPLY_DATA_OID, .name = REPLY_DATA },
+ { .oid = 0 }
};
static char *oid2name(const unsigned long oid)
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);
+ rc = -zap_lookup(o->od_os, parent, name, 8, 1, (void *)zde);
if (rc)
return rc;
- strncpy(oi->oi_name, name, OSD_OI_NAME_SIZE - 1);
+ rc = strlcpy(oi->oi_name, name, sizeof(oi->oi_name));
+ if (rc >= sizeof(oi->oi_name))
+ return -E2BIG;
+
oi->oi_zapid = zde->zde_dnode;
- return rc;
+ return 0;
}
/**
{
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;
+ sa_handle_t *sa_hdl = NULL;
dmu_tx_t *tx;
+ uint64_t oid;
int rc;
/* verify it doesn't already exist */
- rc = -zap_lookup(o->od_objset.os, parent, name, 8, 1, (void *)zde);
+ rc = -zap_lookup(o->od_os, parent, name, 8, 1, (void *)zde);
if (rc == 0)
return -EEXIST;
+ if (o->od_dt_dev.dd_rdonly)
+ return -EROFS;
+
/* create fid-to-dnode index */
- tx = dmu_tx_create(o->od_objset.os);
+ tx = dmu_tx_create(o->od_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);
return rc;
}
+ oid = osd_zap_create_flags(o->od_os, 0, ZAP_FLAG_HASH64,
+ DMU_OT_DIRECTORY_CONTENTS,
+ 14, /* == ZFS fzap_default_block_shift */
+ DN_MAX_INDBLKSHIFT,
+ 0, tx);
+
+ rc = -sa_handle_get(o->od_os, oid, NULL, SA_HDL_PRIVATE, &sa_hdl);
+ if (rc)
+ goto commit;
+ memset(la, 0, sizeof(*la));
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, parent, oi_tag, 0);
+ rc = __osd_attr_init(env, o, NULL, sa_hdl, tx, la, parent, NULL);
+ sa_handle_destroy(sa_hdl);
+ if (rc)
+ goto commit;
- zde->zde_dnode = db->db_object;
+ zde->zde_dnode = oid;
zde->zde_pad = 0;
zde->zde_type = IFTODT(S_IFDIR);
- rc = -zap_add(o->od_objset.os, parent, name, 8, 1, (void *)zde, tx);
+ rc = -zap_add(o->od_os, parent, name, 8, 1, (void *)zde, tx);
+commit:
+ if (rc)
+ dmu_object_free(o->od_os, oid, tx);
dmu_tx_commit(tx);
- *child = db->db_object;
- sa_buf_rele(db, oi_tag);
+ if (rc == 0)
+ *child = oid;
return rc;
}
* 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)
+ u64 seq, struct lu_seq_range *range)
{
struct seq_server_site *ss = osd_seq_site(osd);
- int rc;
- if (fid_is_idif(fid)) {
+ if (fid_seq_is_idif(seq)) {
fld_range_set_ost(range);
- range->lsr_index = fid_idif_ost_idx(fid);
+ range->lsr_index = idif_ost_idx(seq);
return 0;
}
- if (!fid_seq_in_fldb(fid_seq(fid))) {
+ if (!fid_seq_in_fldb(seq)) {
fld_range_set_mdt(range);
if (ss != NULL)
/* FIXME: If ss is NULL, it suppose not get lsr_index
LASSERT(ss != NULL);
fld_range_set_any(range);
- rc = fld_server_lookup(env, ss->ss_server_fld, fid_seq(fid), range);
- if (rc != 0)
- CERROR("%s: cannot find FLD range for "DFID": rc = %d\n",
- osd_name(osd), PFID(fid), rc);
- return rc;
+ /* OSD will only do local fld lookup */
+ return fld_local_lookup(env, ss->ss_server_fld, seq, range);
}
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;
+ 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 (unlikely(fid_is_local_file(fid) || fid_is_llog(fid)) ||
+ fid_is_name_llog(fid) || fid_is_quota(fid))
+ RETURN(0);
+
+ rc = osd_fld_lookup(env, osd, fid_seq(fid), range);
if (rc != 0) {
- CERROR("%s: Can not lookup fld for "DFID"\n",
- osd_name(osd), PFID(fid));
- RETURN(rc);
+ /* During upgrade, OST FLDB might not be loaded because
+ * OST FLDB is not created until 2.6, so if some DNE
+ * filesystem upgrade from 2.5 to 2.7/2.8, they will
+ * not be able to find the sequence from local FLDB
+ * cache see fld_index_init(). */
+ if (rc == -ENOENT && osd->od_is_ost)
+ RETURN(1);
+
+ if (rc != -ENOENT)
+ CERROR("%s: "DFID" lookup failed: rc = %d\n",
+ osd_name(osd), PFID(fid), rc);
+ RETURN(0);
}
- CDEBUG(D_INFO, "fid "DFID" range "DRANGE"\n", PFID(fid),
- PRANGE(range));
-
if (fld_range_is_ost(range))
RETURN(1);
}
static struct osd_seq *osd_seq_find_locked(struct osd_seq_list *seq_list,
- obd_seq seq)
+ u64 seq)
{
struct osd_seq *osd_seq;
- cfs_list_for_each_entry(osd_seq, &seq_list->osl_seq_list, os_seq_list) {
+ 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)
+static struct osd_seq *osd_seq_find(struct osd_seq_list *seq_list, u64 seq)
{
struct osd_seq *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_device *osd, u64 seq)
{
struct osd_seq_list *seq_list = &osd->od_seq_list;
struct osd_seq *osd_seq;
if (osd_seq == NULL)
GOTO(out, rc = -ENOMEM);
- CFS_INIT_LIST_HEAD(&osd_seq->os_seq_list);
+ INIT_LIST_HEAD(&osd_seq->os_seq_list);
osd_seq->os_seq = seq;
/* Init subdir count to be 32, but each seq can have
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);
- }
-
+ oi.oi_zapid = osd->od_O_id;
sprintf(seq_name, (fid_seq_is_rsvd(seq) ||
- fid_seq_is_mdt0(seq)) ? LPU64 : LPX64i,
+ fid_seq_is_mdt0(seq)) ? "%llu" : "%llx",
fid_seq_is_idif(seq) ? 0 : seq);
rc = osd_oi_find_or_create(env, osd, oi.oi_zapid, seq_name, &odb);
}
write_lock(&seq_list->osl_seq_list_lock);
- cfs_list_add(&osd_seq->os_seq_list, &seq_list->osl_seq_list);
+ 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);
*/
static uint64_t
osd_get_idx_for_ost_obj(const struct lu_env *env, struct osd_device *osd,
- const struct lu_fid *fid, char *buf)
+ const struct lu_fid *fid, char *buf, int bufsize)
{
struct osd_seq *osd_seq;
unsigned long b;
+ u64 id;
int rc;
osd_seq = osd_find_or_add_seq(env, osd, fid_seq(fid));
return PTR_ERR(osd_seq);
}
- rc = fid_to_ostid(fid, &osd_oti_get(env)->oti_ostid);
- LASSERT(rc == 0); /* we should not get here with IGIF */
- b = ostid_id(&osd_oti_get(env)->oti_ostid) % OSD_OST_MAP_SIZE;
+ if (fid_is_last_id(fid)) {
+ id = 0;
+ } else {
+ rc = fid_to_ostid(fid, &osd_oti_get(env)->oti_ostid);
+ LASSERT(rc == 0); /* we should not get here with IGIF */
+ id = ostid_id(&osd_oti_get(env)->oti_ostid);
+ }
+
+ b = id % OSD_OST_MAP_SIZE;
LASSERT(osd_seq->os_compat_dirs[b]);
- sprintf(buf, LPU64, ostid_id(&osd_oti_get(env)->oti_ostid));
+ if (buf)
+ snprintf(buf, bufsize, "%llu", id);
return osd_seq->os_compat_dirs[b];
}
*/
static uint64_t
osd_get_idx_for_fid(struct osd_device *osd, const struct lu_fid *fid,
- char *buf)
+ char *buf, dnode_t **zdn)
{
struct osd_oi *oi;
LASSERT(osd->od_oi_table != NULL);
oi = osd->od_oi_table[fid_seq(fid) & (osd->od_oi_count - 1)];
- osd_fid2str(buf, fid);
+ if (buf)
+ osd_fid2str(buf, fid);
+ if (zdn)
+ *zdn = oi->oi_dn;
return oi->oi_zapid;
}
uint64_t osd_get_name_n_idx(const struct lu_env *env, struct osd_device *osd,
- const struct lu_fid *fid, char *buf)
+ const struct lu_fid *fid, char *buf, int bufsize,
+ dnode_t **zdn)
{
uint64_t zapid;
LASSERT(fid);
- LASSERT(buf);
+ LASSERT(!fid_is_acct(fid));
+
+ if (zdn != NULL)
+ *zdn = NULL;
if (fid_is_on_ost(env, osd, fid) == 1 || fid_seq(fid) == FID_SEQ_ECHO) {
- zapid = osd_get_idx_for_ost_obj(env, osd, fid, buf);
+ zapid = osd_get_idx_for_ost_obj(env, osd, fid, buf, bufsize);
} else if (unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE)) {
/* special objects with fixed known fids get their name */
char *name = oid2name(fid_oid(fid));
if (name) {
zapid = osd->od_root;
- strcpy(buf, name);
- if (fid_is_acct(fid))
- zapid = MASTER_NODE_OBJ;
+ if (buf)
+ strncpy(buf, name, bufsize);
} else {
- zapid = osd_get_idx_for_fid(osd, fid, buf);
+ zapid = osd_get_idx_for_fid(osd, fid, buf, NULL);
}
} else {
- zapid = osd_get_idx_for_fid(osd, fid, buf);
+ zapid = osd_get_idx_for_fid(osd, fid, buf, zdn);
}
return zapid;
{
struct osd_thread_info *info = osd_oti_get(env);
char *buf = info->oti_buf;
- uint64_t zapid;
+ dnode_t *zdn;
+ uint64_t zapid;
int rc = 0;
ENTRY;
- if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT))
+ if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT))
RETURN(-ENOENT);
- if (unlikely(fid_is_acct(fid))) {
- if (fid_oid(fid) == ACCT_USER_OID)
- *oid = dev->od_iusr_oid;
- else
- *oid = dev->od_igrp_oid;
- } else if (unlikely(fid_is_fs_root(fid))) {
+ LASSERT(!fid_is_acct(fid));
+
+ if (unlikely(fid_is_fs_root(fid))) {
*oid = dev->od_root;
} else {
- zapid = osd_get_name_n_idx(env, dev, fid, buf);
-
- rc = -zap_lookup(dev->od_objset.os, zapid, buf,
- 8, 1, &info->oti_zde);
+ zapid = osd_get_name_n_idx(env, dev, fid, buf,
+ sizeof(info->oti_buf), &zdn);
+ rc = osd_zap_lookup(dev, zapid, zdn, buf,
+ 8, 1, &info->oti_zde);
if (rc)
RETURN(rc);
*oid = info->oti_zde.lzd_reg.zde_dnode;
}
+ if (rc == 0)
+ osd_dmu_prefetch(dev->od_os, *oid, 0, 0, 0,
+ ZIO_PRIORITY_ASYNC_READ);
+
RETURN(rc);
}
oi = o->od_oi_table[key];
if (oi) {
+ if (oi->oi_dn)
+ osd_dnode_rele(oi->oi_dn);
OBD_FREE_PTR(oi);
o->od_oi_table[key] = NULL;
}
}
o->od_oi_table[key] = oi;
+ __osd_obj2dnode(o->od_os, oi->oi_zapid, &oi->oi_dn);
return 0;
}
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);
+ list_for_each_entry_safe(osd_seq, tmp, &osl->osl_seq_list,
+ os_seq_list) {
+ 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));
static int
osd_oi_init_compat(const struct lu_env *env, struct osd_device *o)
{
- uint64_t odb, sdb;
- int rc;
+ uint64_t sdb;
+ int rc;
ENTRY;
rc = osd_oi_find_or_create(env, o, o->od_root, "O", &sdb);
- if (rc)
- RETURN(rc);
-
- 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
- * indexes as directories and assume the values are object IDs */
- rc = osd_oi_find_or_create(env, o, MASTER_NODE_OBJ,
- oid2name(ACCT_USER_OID), &odb);
- if (rc)
- RETURN(rc);
- o->od_iusr_oid = odb;
-
- rc = osd_oi_find_or_create(env, o, MASTER_NODE_OBJ,
- oid2name(ACCT_GROUP_OID), &odb);
- if (rc)
- RETURN(rc);
- o->od_igrp_oid = odb;
+ if (!rc)
+ o->od_O_id = sdb;
RETURN(rc);
}
-static char *root2convert = "ROOT";
-/*
- * due to DNE requirements we have to change sequence of /ROOT object
- * so that it doesn't belong to the local sequence FID_SEQ_LOCAL_FILE
- * but a normal sequence living on MDS#0
- * this is the sole purpose of this function.
- *
- * This is only needed for pre-production 2.4 ZFS filesystems, and
- * can be removed in the future.
- */
-int osd_convert_root_to_new_seq(const struct lu_env *env,
- struct osd_device *o)
-{
- struct luz_direntry *lze = &osd_oti_get(env)->oti_zde;
- char *buf = osd_oti_get(env)->oti_str;
- struct lu_fid newfid;
- uint64_t zapid;
- dmu_tx_t *tx = NULL;
- int rc;
- ENTRY;
-
- /* ignore OSTs */
- if (strstr(o->od_svname, "MDT") == NULL)
- RETURN(0);
-
- /* lookup /ROOT */
- rc = -zap_lookup(o->od_objset.os, o->od_root, root2convert, 8,
- sizeof(*lze) / 8, (void *)lze);
- /* doesn't exist or let actual user to handle the error */
- if (rc)
- RETURN(0);
-
- CDEBUG(D_OTHER, "%s: /ROOT -> "DFID" -> "LPU64"\n", o->od_svname,
- PFID(&lze->lzd_fid), (long long int) lze->lzd_reg.zde_dnode);
-
- /* already right one? */
- if (fid_seq(&lze->lzd_fid) == FID_SEQ_ROOT)
- return 0;
-
- tx = dmu_tx_create(o->od_objset.os);
- if (tx == NULL)
- return -ENOMEM;
-
- dmu_tx_hold_bonus(tx, o->od_root);
-
- /* declare delete/insert of the name */
- dmu_tx_hold_zap(tx, o->od_root, TRUE, root2convert);
- dmu_tx_hold_zap(tx, o->od_root, FALSE, root2convert);
-
- /* declare that we'll remove object from fid-dnode mapping */
- zapid = osd_get_name_n_idx(env, o, &lze->lzd_fid, buf);
- dmu_tx_hold_bonus(tx, zapid);
- dmu_tx_hold_zap(tx, zapid, FALSE, buf);
-
- /* declare that we'll add object to fid-dnode mapping */
- newfid.f_seq = FID_SEQ_ROOT;
- newfid.f_oid = 1;
- newfid.f_ver = 0;
- zapid = osd_get_name_n_idx(env, o, &newfid, buf);
- dmu_tx_hold_bonus(tx, zapid);
- dmu_tx_hold_zap(tx, zapid, TRUE, buf);
-
- rc = -dmu_tx_assign(tx, TXG_WAIT);
- if (rc)
- GOTO(err, rc);
-
- rc = -zap_remove(o->od_objset.os, o->od_root, root2convert, tx);
- if (rc)
- GOTO(err, rc);
-
- /* remove from OI */
- zapid = osd_get_name_n_idx(env, o, &lze->lzd_fid, buf);
- rc = -zap_remove(o->od_objset.os, zapid, buf, tx);
- if (rc)
- GOTO(err, rc);
-
- lze->lzd_fid = newfid;
- rc = -zap_add(o->od_objset.os, o->od_root, root2convert,
- 8, sizeof(*lze) / 8, (void *)lze, tx);
- if (rc)
- GOTO(err, rc);
-
- /* add to OI with the new fid */
- zapid = osd_get_name_n_idx(env, o, &newfid, buf);
- rc = -zap_add(o->od_objset.os, zapid, buf, 8, 1, &lze->lzd_reg, tx);
- if (rc)
- GOTO(err, rc);
-
-
- /* LMA will be updated in mdd_compat_fixes */
- dmu_tx_commit(tx);
-
- RETURN(rc);
-
-err:
- if (tx)
- dmu_tx_abort(tx);
- CERROR("%s: can't convert to new fid: rc = %d\n", o->od_svname, rc);
- RETURN(rc);
-}
-
/**
* Initialize the OIs by either opening or creating them as needed.
*/
return 0;
}
+/*
+ * the following set of functions are used to maintain per-thread
+ * cache of FID->ino mapping. this mechanism is used to avoid
+ * expensive LU/OI lookups.
+ */
+struct osd_idmap_cache *osd_idc_find(const struct lu_env *env,
+ struct osd_device *osd,
+ const struct lu_fid *fid)
+{
+ struct osd_thread_info *oti = osd_oti_get(env);
+ struct osd_idmap_cache *idc = oti->oti_ins_cache;
+ int i;
+ for (i = 0; i < oti->oti_ins_cache_used; i++) {
+ if (!lu_fid_eq(&idc[i].oic_fid, fid))
+ continue;
+ if (idc[i].oic_dev != osd)
+ continue;
+
+ return idc + i;
+ }
+
+ return NULL;
+}
+
+struct osd_idmap_cache *osd_idc_add(const struct lu_env *env,
+ struct osd_device *osd,
+ const struct lu_fid *fid)
+{
+ struct osd_thread_info *oti = osd_oti_get(env);
+ struct osd_idmap_cache *idc;
+ int i;
+
+ if (unlikely(oti->oti_ins_cache_used >= oti->oti_ins_cache_size)) {
+ i = oti->oti_ins_cache_size * 2;
+ LASSERT(i < 1000);
+ if (i == 0)
+ i = OSD_INS_CACHE_SIZE;
+ OBD_ALLOC(idc, sizeof(*idc) * i);
+ if (idc == NULL)
+ return ERR_PTR(-ENOMEM);
+ if (oti->oti_ins_cache != NULL) {
+ memcpy(idc, oti->oti_ins_cache,
+ oti->oti_ins_cache_used * sizeof(*idc));
+ OBD_FREE(oti->oti_ins_cache,
+ oti->oti_ins_cache_used * sizeof(*idc));
+ }
+ oti->oti_ins_cache = idc;
+ oti->oti_ins_cache_size = i;
+ }
+
+ idc = &oti->oti_ins_cache[oti->oti_ins_cache_used++];
+ idc->oic_fid = *fid;
+ idc->oic_dev = osd;
+ idc->oic_dnode = 0;
+ idc->oic_remote = 0;
+
+ return idc;
+}
+
+/**
+ * Lookup mapping for the given fid in the cache
+ *
+ * Initialize a new one if not found. the initialization checks whether
+ * the object is local or remote. for the local objects, OI is used to
+ * learn dnode#. the function is used when the caller has no information
+ * about the object, e.g. at dt_insert().
+ */
+struct osd_idmap_cache *osd_idc_find_or_init(const struct lu_env *env,
+ struct osd_device *osd,
+ const struct lu_fid *fid)
+{
+ struct osd_idmap_cache *idc;
+ int rc;
+
+ LASSERT(!fid_is_acct(fid));
+
+ idc = osd_idc_find(env, osd, fid);
+ if (idc != NULL)
+ return idc;
+
+ /* new mapping is needed */
+ idc = osd_idc_add(env, osd, fid);
+ if (IS_ERR(idc))
+ return idc;
+
+ /* initialize it */
+ rc = osd_remote_fid(env, osd, fid);
+ if (unlikely(rc < 0))
+ return ERR_PTR(rc);
+
+ if (rc == 0) {
+ /* the object is local, lookup in OI */
+ uint64_t dnode;
+
+ rc = osd_fid_lookup(env, osd, fid, &dnode);
+ if (unlikely(rc < 0)) {
+ CERROR("%s: can't lookup: rc = %d\n",
+ osd->od_svname, rc);
+ return ERR_PTR(rc);
+ }
+ LASSERT(dnode < (1ULL << DN_MAX_OBJECT_SHIFT));
+ idc->oic_dnode = dnode;
+ } else {
+ /* the object is remote */
+ idc->oic_remote = 1;
+ }
+
+ return idc;
+}
+
+/*
+ * lookup mapping for given FID and fill it from the given object.
+ * the object is local by definition.
+ */
+int osd_idc_find_and_init(const struct lu_env *env, struct osd_device *osd,
+ struct osd_object *obj)
+{
+ const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
+ struct osd_idmap_cache *idc;
+
+ idc = osd_idc_find(env, osd, fid);
+ if (idc != NULL) {
+ if (obj->oo_dn == NULL)
+ return 0;
+ idc->oic_dnode = obj->oo_dn->dn_object;
+ return 0;
+ }
+
+ /* new mapping is needed */
+ idc = osd_idc_add(env, osd, fid);
+ if (IS_ERR(idc))
+ return PTR_ERR(idc);
+
+ if (obj->oo_dn)
+ idc->oic_dnode = obj->oo_dn->dn_object;
+
+ return 0;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff