* GPL HEADER END
*/
/*
- * Copyright (c) 2012 Whamcloud, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* lustre/obdclass/local_storage.c
/* all initialized local storages on this node are linked on this */
static CFS_LIST_HEAD(ls_list_head);
-static CFS_DEFINE_MUTEX(ls_list_mutex);
+static DEFINE_MUTEX(ls_list_mutex);
static int ls_object_init(const struct lu_env *env, struct lu_object *o,
const struct lu_object_conf *unused)
{
struct ls_device *ls;
- cfs_mutex_lock(&ls_list_mutex);
+ mutex_lock(&ls_list_mutex);
ls = __ls_find_dev(dev);
- cfs_mutex_unlock(&ls_list_mutex);
+ mutex_unlock(&ls_list_mutex);
return ls;
}
ENTRY;
- cfs_mutex_lock(&ls_list_mutex);
+ mutex_lock(&ls_list_mutex);
ls = __ls_find_dev(dev);
if (ls)
GOTO(out_ls, ls);
cfs_atomic_set(&ls->ls_refcount, 1);
CFS_INIT_LIST_HEAD(&ls->ls_los_list);
- cfs_mutex_init(&ls->ls_los_mutex);
+ mutex_init(&ls->ls_los_mutex);
ls->ls_osd = dev;
/* finally add ls to the list */
cfs_list_add(&ls->ls_linkage, &ls_list_head);
out_ls:
- cfs_mutex_unlock(&ls_list_mutex);
+ mutex_unlock(&ls_list_mutex);
RETURN(ls);
}
if (!cfs_atomic_dec_and_test(&ls->ls_refcount))
return;
- cfs_mutex_lock(&ls_list_mutex);
+ mutex_lock(&ls_list_mutex);
if (cfs_atomic_read(&ls->ls_refcount) == 0) {
LASSERT(cfs_list_empty(&ls->ls_los_list));
cfs_list_del(&ls->ls_linkage);
lu_device_fini(&ls->ls_top_dev.dd_lu_dev);
OBD_FREE_PTR(ls);
}
- cfs_mutex_unlock(&ls_list_mutex);
+ mutex_unlock(&ls_list_mutex);
}
/**
* the latest generated fid atomically with
* object creation see local_object_create() */
- cfs_mutex_lock(&los->los_id_lock);
+ mutex_lock(&los->los_id_lock);
fid->f_seq = los->los_seq;
- fid->f_oid = los->los_last_oid++;
+ fid->f_oid = ++los->los_last_oid;
fid->f_ver = 0;
- cfs_mutex_unlock(&los->los_id_lock);
+ mutex_unlock(&los->los_id_lock);
return 0;
}
struct dt_object_format *dof, struct thandle *th)
{
struct dt_thread_info *dti = dt_info(env);
- struct los_ondisk losd;
+ obd_id lastid;
int rc;
ENTRY;
if (rc)
RETURN(rc);
- lustre_lma_init(&dti->dti_lma, lu_object_fid(&o->do_lu));
- lustre_lma_swab(&dti->dti_lma);
- dti->dti_lb.lb_buf = &dti->dti_lma;
- dti->dti_lb.lb_len = sizeof(dti->dti_lma);
- rc = dt_xattr_set(env, o, &dti->dti_lb, XATTR_NAME_LMA, 0, th,
- BYPASS_CAPA);
-
if (los == NULL)
RETURN(rc);
/* many threads can be updated this, serialize
* them here to avoid the race where one thread
* takes the value first, but writes it last */
- cfs_mutex_lock(&los->los_id_lock);
+ mutex_lock(&los->los_id_lock);
/* update local oid number on disk so that
* we know the last one used after reboot */
- losd.lso_magic = cpu_to_le32(LOS_MAGIC);
- losd.lso_next_oid = cpu_to_le32(los->los_last_oid);
+ lastid = cpu_to_le64(los->los_last_oid);
dti->dti_off = 0;
- dti->dti_lb.lb_buf = &losd;
- dti->dti_lb.lb_len = sizeof(losd);
+ dti->dti_lb.lb_buf = &lastid;
+ dti->dti_lb.lb_len = sizeof(lastid);
rc = dt_record_write(env, los->los_obj, &dti->dti_lb, &dti->dti_off,
th);
- cfs_mutex_unlock(&los->los_id_lock);
+ mutex_unlock(&los->los_id_lock);
RETURN(rc);
}
if (rc) {
lu_object_put_nocache(env, &dto->do_lu);
dto = ERR_PTR(rc);
- } else {
- struct lu_fid dti_fid;
- /* since local files FIDs are not in OI the directory entry
- * is used to get inode number/generation, we need to do lookup
- * again to cache this data after create */
- rc = dt_lookup_dir(env, parent, name, &dti_fid);
- LASSERT(rc == 0);
}
RETURN(dto);
}
rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
if (rc == 0) {
- /* name is found, get the object */
- if (!lu_fid_eq(fid, &dti->dti_fid))
- dto = ERR_PTR(-EINVAL);
- else
- dto = dt_locate(env, dt, fid);
+ dto = dt_locate(env, dt, &dti->dti_fid);
} else if (rc != -ENOENT) {
dto = ERR_PTR(rc);
} else {
}
EXPORT_SYMBOL(local_index_find_or_create_with_fid);
+static int local_object_declare_unlink(const struct lu_env *env,
+ struct dt_device *dt,
+ struct dt_object *p,
+ struct dt_object *c, const char *name,
+ struct thandle *th)
+{
+ int rc;
+
+ rc = dt_declare_delete(env, p, (const struct dt_key *)name, th);
+ if (rc < 0)
+ return rc;
+
+ rc = dt_declare_ref_del(env, c, th);
+ if (rc < 0)
+ return rc;
+
+ return dt_declare_destroy(env, c, th);
+}
+
+int local_object_unlink(const struct lu_env *env, struct dt_device *dt,
+ struct dt_object *parent, const char *name)
+{
+ struct dt_thread_info *dti = dt_info(env);
+ struct dt_object *dto;
+ struct thandle *th;
+ int rc;
+
+ ENTRY;
+
+ rc = dt_lookup_dir(env, parent, name, &dti->dti_fid);
+ if (rc == -ENOENT)
+ RETURN(0);
+ else if (rc < 0)
+ RETURN(rc);
+
+ dto = dt_locate(env, dt, &dti->dti_fid);
+ if (unlikely(IS_ERR(dto)))
+ RETURN(PTR_ERR(dto));
+
+ th = dt_trans_create(env, dt);
+ if (IS_ERR(th))
+ GOTO(out, rc = PTR_ERR(th));
+
+ rc = local_object_declare_unlink(env, dt, parent, dto, name, th);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, dt, th);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ dt_write_lock(env, dto, 0);
+ rc = dt_delete(env, parent, (struct dt_key *)name, th, BYPASS_CAPA);
+ if (rc < 0)
+ GOTO(unlock, rc);
+
+ rc = dt_ref_del(env, dto, th);
+ if (rc < 0) {
+ rc = dt_insert(env, parent,
+ (const struct dt_rec *)&dti->dti_fid,
+ (const struct dt_key *)name, th, BYPASS_CAPA, 1);
+ GOTO(unlock, rc);
+ }
+
+ rc = dt_destroy(env, dto, th);
+unlock:
+ dt_write_unlock(env, dto);
+stop:
+ dt_trans_stop(env, dt, th);
+out:
+ lu_object_put_nocache(env, &dto->do_lu);
+ return rc;
+}
+EXPORT_SYMBOL(local_object_unlink);
+
struct local_oid_storage *dt_los_find(struct ls_device *ls, __u64 seq)
{
struct local_oid_storage *los, *ret = NULL;
return;
}
+/* after Lustre 2.3 release there may be old file to store last generated FID
+ * If such file exists then we have to read its content
+ */
+int lastid_compat_check(const struct lu_env *env, struct dt_device *dev,
+ __u64 lastid_seq, __u32 *first_oid, struct ls_device *ls)
+{
+ struct dt_thread_info *dti = dt_info(env);
+ struct dt_object *root = NULL;
+ struct los_ondisk losd;
+ struct dt_object *o = NULL;
+ int rc = 0;
+
+ rc = dt_root_get(env, dev, &dti->dti_fid);
+ if (rc)
+ return rc;
+
+ root = ls_locate(env, ls, &dti->dti_fid);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+
+ /* find old last_id file */
+ snprintf(dti->dti_buf, sizeof(dti->dti_buf), "seq-"LPX64"-lastid",
+ lastid_seq);
+ rc = dt_lookup_dir(env, root, dti->dti_buf, &dti->dti_fid);
+ lu_object_put_nocache(env, &root->do_lu);
+ if (rc == -ENOENT) {
+ /* old llog lastid accessed by FID only */
+ if (lastid_seq != FID_SEQ_LLOG)
+ return 0;
+ dti->dti_fid.f_seq = FID_SEQ_LLOG;
+ dti->dti_fid.f_oid = 1;
+ dti->dti_fid.f_ver = 0;
+ o = ls_locate(env, ls, &dti->dti_fid);
+ if (IS_ERR(o))
+ return PTR_ERR(o);
+
+ if (!dt_object_exists(o)) {
+ lu_object_put_nocache(env, &o->do_lu);
+ return 0;
+ }
+ CDEBUG(D_INFO, "Found old llog lastid file\n");
+ } else if (rc < 0) {
+ return rc;
+ } else {
+ CDEBUG(D_INFO, "Found old lastid file for sequence "LPX64"\n",
+ lastid_seq);
+ o = ls_locate(env, ls, &dti->dti_fid);
+ if (IS_ERR(o))
+ return PTR_ERR(o);
+ }
+ /* let's read seq-NNNNNN-lastid file value */
+ LASSERT(dt_object_exists(o));
+ dti->dti_off = 0;
+ dti->dti_lb.lb_buf = &losd;
+ dti->dti_lb.lb_len = sizeof(losd);
+ dt_read_lock(env, o, 0);
+ rc = dt_record_read(env, o, &dti->dti_lb, &dti->dti_off);
+ dt_read_unlock(env, o);
+ lu_object_put_nocache(env, &o->do_lu);
+ if (rc == 0 && le32_to_cpu(losd.lso_magic) != LOS_MAGIC) {
+ CERROR("%s: wrong content of seq-"LPX64"-lastid file, magic %x\n",
+ o->do_lu.lo_dev->ld_obd->obd_name, lastid_seq,
+ le32_to_cpu(losd.lso_magic));
+ return -EINVAL;
+ } else if (rc < 0) {
+ CERROR("%s: failed to read seq-"LPX64"-lastid: rc = %d\n",
+ o->do_lu.lo_dev->ld_obd->obd_name, lastid_seq, rc);
+ return rc;
+ }
+ *first_oid = le32_to_cpu(losd.lso_next_oid);
+ return rc;
+}
+
/**
* Initialize local OID storage for required sequence.
* That may be needed for services that uses local files and requires
{
struct dt_thread_info *dti = dt_info(env);
struct ls_device *ls;
- struct los_ondisk losd;
- struct dt_object *o;
- struct dt_object *root = NULL;
+ obd_id lastid;
+ struct dt_object *o = NULL;
struct thandle *th;
- int rc;
+ __u32 first_oid = fid_oid(first_fid);
+ int rc = 0;
ENTRY;
if (IS_ERR(ls))
RETURN(PTR_ERR(ls));
- cfs_mutex_lock(&ls->ls_los_mutex);
+ mutex_lock(&ls->ls_los_mutex);
*los = dt_los_find(ls, fid_seq(first_fid));
if (*los != NULL)
GOTO(out, rc = 0);
GOTO(out, rc = -ENOMEM);
cfs_atomic_set(&(*los)->los_refcount, 1);
- cfs_mutex_init(&(*los)->los_id_lock);
+ mutex_init(&(*los)->los_id_lock);
(*los)->los_dev = &ls->ls_top_dev;
cfs_atomic_inc(&ls->ls_refcount);
cfs_list_add(&(*los)->los_list, &ls->ls_los_list);
- /* initialize data allowing to generate new fids,
- * literally we need a sequence */
- o = ls_locate(env, ls, first_fid);
+ /* Use {seq, 0, 0} to create the LAST_ID file for every
+ * sequence. OIDs start at LUSTRE_FID_INIT_OID.
+ */
+ dti->dti_fid.f_seq = fid_seq(first_fid);
+ dti->dti_fid.f_oid = LUSTRE_FID_LASTID_OID;
+ dti->dti_fid.f_ver = 0;
+ o = ls_locate(env, ls, &dti->dti_fid);
if (IS_ERR(o))
GOTO(out_los, rc = PTR_ERR(o));
- rc = dt_root_get(env, dev, &dti->dti_fid);
- if (rc)
- GOTO(out_los, rc);
-
- root = ls_locate(env, ls, &dti->dti_fid);
- if (IS_ERR(root))
- GOTO(out_los, rc = PTR_ERR(root));
-
- if (dt_try_as_dir(env, root) == 0)
- GOTO(out_los, rc = -ENOTDIR);
-
- dt_write_lock(env, o, 0);
if (!dt_object_exists(o)) {
+ rc = lastid_compat_check(env, dev, fid_seq(first_fid),
+ &first_oid, ls);
+ if (rc < 0)
+ GOTO(out_los, rc);
+
th = dt_trans_create(env, dev);
if (IS_ERR(th))
- GOTO(out_lock, rc = PTR_ERR(th));
+ GOTO(out_los, rc = PTR_ERR(th));
dti->dti_attr.la_valid = LA_MODE | LA_TYPE;
dti->dti_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
if (rc)
GOTO(out_trans, rc);
- snprintf(dti->dti_buf, sizeof(dti->dti_buf),
- "seq-%Lx-lastid", fid_seq(first_fid));
- rc = dt_declare_insert(env, root,
- (const struct dt_rec *)lu_object_fid(&o->do_lu),
- (const struct dt_key *)dti->dti_buf,
- th);
- if (rc)
- GOTO(out_trans, rc);
-
- dti->dti_lb.lb_buf = NULL;
- dti->dti_lb.lb_len = sizeof(dti->dti_lma);
- rc = dt_declare_xattr_set(env, o, &dti->dti_lb, XATTR_NAME_LMA,
- 0, th);
- if (rc)
- GOTO(out_trans, rc);
-
- rc = dt_declare_record_write(env, o, sizeof(losd), 0, th);
+ rc = dt_declare_record_write(env, o, sizeof(lastid), 0, th);
if (rc)
GOTO(out_trans, rc);
if (rc)
GOTO(out_trans, rc);
- LASSERT(!dt_object_exists(o));
- rc = dt_create(env, o, &dti->dti_attr, NULL, &dti->dti_dof, th);
- if (rc)
- GOTO(out_trans, rc);
- LASSERT(dt_object_exists(o));
-
- lustre_lma_init(&dti->dti_lma, lu_object_fid(&o->do_lu));
- lustre_lma_swab(&dti->dti_lma);
- dti->dti_lb.lb_buf = &dti->dti_lma;
- dti->dti_lb.lb_len = sizeof(dti->dti_lma);
- rc = dt_xattr_set(env, o, &dti->dti_lb, XATTR_NAME_LMA, 0,
- th, BYPASS_CAPA);
+ dt_write_lock(env, o, 0);
+ if (dt_object_exists(o))
+ GOTO(out_lock, rc = 0);
+
+ rc = dt_create(env, o, &dti->dti_attr, NULL, &dti->dti_dof,
+ th);
if (rc)
- GOTO(out_trans, rc);
+ GOTO(out_lock, rc);
- losd.lso_magic = cpu_to_le32(LOS_MAGIC);
- losd.lso_next_oid = cpu_to_le32(fid_oid(first_fid) + 1);
+ lastid = cpu_to_le64(first_oid);
dti->dti_off = 0;
- dti->dti_lb.lb_buf = &losd;
- dti->dti_lb.lb_len = sizeof(losd);
+ dti->dti_lb.lb_buf = &lastid;
+ dti->dti_lb.lb_len = sizeof(lastid);
rc = dt_record_write(env, o, &dti->dti_lb, &dti->dti_off, th);
if (rc)
- GOTO(out_trans, rc);
- rc = dt_insert(env, root,
- (const struct dt_rec *)lu_object_fid(&o->do_lu),
- (const struct dt_key *)dti->dti_buf, th,
- BYPASS_CAPA, 1);
- if (rc)
- GOTO(out_trans, rc);
+ GOTO(out_lock, rc);
+out_lock:
+ dt_write_unlock(env, o);
out_trans:
dt_trans_stop(env, dev, th);
} else {
dti->dti_off = 0;
- dti->dti_lb.lb_buf = &losd;
- dti->dti_lb.lb_len = sizeof(losd);
+ dti->dti_lb.lb_buf = &lastid;
+ dti->dti_lb.lb_len = sizeof(lastid);
+ dt_read_lock(env, o, 0);
rc = dt_record_read(env, o, &dti->dti_lb, &dti->dti_off);
- if (rc == 0 && le32_to_cpu(losd.lso_magic) != LOS_MAGIC) {
- CERROR("local storage file "DFID" is corrupted\n",
- PFID(first_fid));
+ dt_read_unlock(env, o);
+ if (rc == 0 && le64_to_cpu(lastid) > OBIF_MAX_OID) {
+ CERROR("%s: bad oid "LPU64" is read from LAST_ID\n",
+ o->do_lu.lo_dev->ld_obd->obd_name,
+ le64_to_cpu(lastid));
rc = -EINVAL;
}
}
-out_lock:
- dt_write_unlock(env, o);
out_los:
- if (root)
- lu_object_put_nocache(env, &root->do_lu);
- if (rc) {
+ if (rc != 0) {
+ cfs_list_del(&(*los)->los_list);
+ cfs_atomic_dec(&ls->ls_refcount);
OBD_FREE_PTR(*los);
*los = NULL;
- if (o)
+ if (o != NULL && !IS_ERR(o))
lu_object_put_nocache(env, &o->do_lu);
} else {
(*los)->los_seq = fid_seq(first_fid);
- (*los)->los_last_oid = le32_to_cpu(losd.lso_next_oid);
+ (*los)->los_last_oid = le64_to_cpu(lastid);
(*los)->los_obj = o;
+ /* Read value should not be less than initial one
+ * but possible after upgrade from older fs.
+ * In this case just switch to the first_oid in memory and
+ * it will be updated on disk with first object generated */
+ if ((*los)->los_last_oid < first_oid)
+ (*los)->los_last_oid = first_oid;
}
out:
- cfs_mutex_unlock(&ls->ls_los_mutex);
+ mutex_unlock(&ls->ls_los_mutex);
ls_device_put(env, ls);
return rc;
}
LASSERT(los->los_dev);
ls = dt2ls_dev(los->los_dev);
- cfs_mutex_lock(&ls->ls_los_mutex);
+ mutex_lock(&ls->ls_los_mutex);
if (cfs_atomic_read(&los->los_refcount) == 0) {
if (los->los_obj)
lu_object_put_nocache(env, &los->los_obj->do_lu);
cfs_list_del(&los->los_list);
OBD_FREE_PTR(los);
}
- cfs_mutex_unlock(&ls->ls_los_mutex);
+ mutex_unlock(&ls->ls_los_mutex);
ls_device_put(env, ls);
}
EXPORT_SYMBOL(local_oid_storage_fini);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff