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;
mutex_unlock(&los->los_id_lock);
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;
/* 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);
mutex_unlock(&los->los_id_lock);
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 *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;
atomic_inc(&ls->ls_refcount);
list_add(&(*los)->los_list, &ls->ls_los_list);
- 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));
-
- /* initialize data allowing to generate new fids,
- * literally we need a sequence */
- snprintf(dti->dti_buf, sizeof(dti->dti_buf), "seq-%Lx-lastid",
- fid_seq(first_fid));
- rc = dt_lookup_dir(env, root, dti->dti_buf, &dti->dti_fid);
- if (rc == -ENOENT)
- dti->dti_fid = *first_fid;
- else if (rc < 0)
- GOTO(out_los, rc);
-
+ /* 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));
- LASSERT(fid_seq(&dti->dti_fid) == fid_seq(first_fid));
+
if (!dt_object_exists(o)) {
- LASSERT(rc == -ENOENT);
+ 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))
if (rc)
GOTO(out_trans, rc);
- rc = dt_declare_insert(env, root,
- (const struct dt_rec *)&dti->dti_fid,
- (const struct dt_key *)dti->dti_buf,
- 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);
- dt_write_lock(env, root, 0);
dt_write_lock(env, o, 0);
if (dt_object_exists(o))
GOTO(out_lock, rc = 0);
if (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_lock, rc);
- rc = dt_insert(env, root,
- (const struct dt_rec *)&dti->dti_fid,
- (const struct dt_key *)dti->dti_buf,
- th, BYPASS_CAPA, 1);
- if (rc)
- GOTO(out_lock, rc);
out_lock:
dt_write_unlock(env, o);
- dt_write_unlock(env, root);
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);
dt_read_unlock(env, o);
- if (rc == 0 && le32_to_cpu(losd.lso_magic) != LOS_MAGIC) {
- CERROR("local storage file "DFID" is corrupted\n",
- PFID(first_fid));
+ 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_los:
- if (root != NULL && !IS_ERR(root))
- lu_object_put_nocache(env, &root->do_lu);
-
if (rc != 0) {
list_del(&(*los)->los_list);
atomic_dec(&ls->ls_refcount);
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 */
+ LASSERTF((*los)->los_last_oid >= first_oid, "%u < %u\n",
+ (*los)->los_last_oid, first_oid);
}
out:
mutex_unlock(&ls->ls_los_mutex);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff