int seq_server_init(struct lu_server_seq *seq,
struct dt_device *dev,
const char *prefix,
enum lu_mgr_type type,
struct seq_server_site *ss,
const struct lu_env *env)
{
int rc, is_srv = (type == LUSTRE_SEQ_SERVER);
ENTRY;
LASSERT(dev != NULL);
LASSERT(prefix != NULL);
LASSERT(ss != NULL);
LASSERT(ss->ss_lu != NULL);
seq->lss_cli = NULL;
seq->lss_type = type;
seq->lss_site = ss;
range_init(&seq->lss_space);
range_init(&seq->lss_lowater_set);
range_init(&seq->lss_hiwater_set);
seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH;
mutex_init(&seq->lss_mutex);
seq->lss_width = is_srv ?
LUSTRE_SEQ_META_WIDTH : LUSTRE_SEQ_SUPER_WIDTH;
snprintf(seq->lss_name, sizeof(seq->lss_name),
"%s-%s", (is_srv ? "srv" : "ctl"), prefix);
rc = seq_store_init(seq, env, dev);
if (rc)
GOTO(out, rc);
/* Request backing store for saved sequence info. */
rc = seq_store_read(seq, env);
if (rc == -ENODATA) {
/* Nothing is read, init by default value. */
seq->lss_space = is_srv ?
LUSTRE_SEQ_ZERO_RANGE:
LUSTRE_SEQ_SPACE_RANGE;
LASSERT(ss != NULL);
seq->lss_space.lsr_index = ss->ss_node_id;
LCONSOLE_INFO("%s: No data found "
"on store. Initialize space\n",
seq->lss_name);
rc = seq_store_update(env, seq, NULL, 0);
if (rc) {
CERROR("%s: Can't write space data, "
"rc %d\n", seq->lss_name, rc);
}
} else if (rc) {
CERROR("%s: Can't read space data, rc %d\n",
seq->lss_name, rc);
GOTO(out, rc);
}
if (is_srv) {
LASSERT(range_is_sane(&seq->lss_space));
} else {
LASSERT(!range_is_zero(&seq->lss_space) &&
range_is_sane(&seq->lss_space));
}
rc = seq_server_proc_init(seq);
if (rc)
GOTO(out, rc);
EXIT;
out:
if (rc)
seq_server_fini(seq, env);
return rc;
}
int seq_server_init(const struct lu_env *env,
struct lu_server_seq *seq,
struct dt_device *dev,
const char *prefix,
enum lu_mgr_type type,
struct seq_server_site *ss)
{
int rc, is_srv = (type == LUSTRE_SEQ_SERVER);
ENTRY;
LASSERT(dev != NULL);
LASSERT(prefix != NULL);
LASSERT(ss != NULL);
LASSERT(ss->ss_lu != NULL);
/* A compile-time check for FIDs that used to be in lustre_idl.h
* but is moved here to remove CLASSERT/LASSERT in that header.
* Check all lu_fid fields are converted in fid_cpu_to_le() and friends
* and that there is no padding added by compiler to the struct. */
{
struct lu_fid tst;
CLASSERT(sizeof(tst) == sizeof(tst.f_seq) +
sizeof(tst.f_oid) + sizeof(tst.f_ver));
}
seq->lss_cli = NULL;
seq->lss_type = type;
seq->lss_site = ss;
lu_seq_range_init(&seq->lss_space);
lu_seq_range_init(&seq->lss_lowater_set);
lu_seq_range_init(&seq->lss_hiwater_set);
seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH;
mutex_init(&seq->lss_mutex);
seq->lss_width = is_srv ?
LUSTRE_SEQ_META_WIDTH : LUSTRE_SEQ_SUPER_WIDTH;
snprintf(seq->lss_name, sizeof(seq->lss_name),
"%s-%s", (is_srv ? "srv" : "ctl"), prefix);
rc = seq_store_init(seq, env, dev);
if (rc)
GOTO(out, rc);
/* Request backing store for saved sequence info. */
rc = seq_store_read(seq, env);
if (rc == -ENODATA) {
/* Nothing is read, init by default value. */
seq->lss_space = is_srv ?
LUSTRE_SEQ_ZERO_RANGE:
LUSTRE_SEQ_SPACE_RANGE;
seq->lss_space.lsr_index = ss->ss_node_id;
LCONSOLE_INFO("%s: No data found "
"on store. Initialize space\n",
seq->lss_name);
rc = seq_store_update(env, seq, NULL, 0);
if (rc) {
CERROR("%s: Can't write space data, "
"rc %d\n", seq->lss_name, rc);
}
} else if (rc) {
CERROR("%s: Can't read space data, rc %d\n",
seq->lss_name, rc);
GOTO(out, rc);
}
if (is_srv) {
LASSERT(lu_seq_range_is_sane(&seq->lss_space));
} else {
LASSERT(!lu_seq_range_is_zero(&seq->lss_space) &&
lu_seq_range_is_sane(&seq->lss_space));
}
rc = seq_server_proc_init(seq);
if (rc)
GOTO(out, rc);
EXIT;
out:
if (rc)
seq_server_fini(seq, env);
return rc;
}