static int lov_llog_origin_connect(struct llog_ctxt *ctxt,
struct llog_logid *logid,
struct llog_gen *gen,
struct obd_uuid *uuid)
{
struct obd_device *obd = ctxt->loc_obd;
struct lov_obd *lov = &obd->u.lov;
int i, rc = 0, err = 0;
ENTRY;
obd_getref(obd);
for (i = 0; i < lov->desc.ld_tgt_count; i++) {
struct obd_device *child;
struct llog_ctxt *cctxt;
if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
continue;
if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid))
continue;
CDEBUG(D_CONFIG, "connect %d/%d\n", i, lov->desc.ld_tgt_count);
child = lov->lov_tgts[i]->ltd_exp->exp_obd;
cctxt = llog_get_context(child, ctxt->loc_idx);
rc = llog_connect(cctxt, logid, gen, uuid);
llog_ctxt_put(cctxt);
if (rc) {
CERROR("error osc_llog_connect tgt %d (%d)\n", i, rc);
if (!err)
err = rc;
}
}
obd_putref(obd);
RETURN(err);
}
static inline int mgs_destroy_export(struct obd_export *exp)
{
ENTRY;
target_destroy_export(exp);
mgs_client_free(exp);
if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
&exp->exp_client_uuid)))
RETURN(0);
ldlm_destroy_export(exp);
RETURN(0);
}
static inline int mgs_init_export(struct obd_export *exp)
{
struct mgs_export_data *data = &exp->u.eu_mgs_data;
/* init mgs_export_data for fsc */
cfs_spin_lock_init(&data->med_lock);
CFS_INIT_LIST_HEAD(&data->med_clients);
cfs_spin_lock(&exp->exp_lock);
exp->exp_connecting = 1;
cfs_spin_unlock(&exp->exp_lock);
/* self-export doesn't need client data and ldlm initialization */
if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
&exp->exp_client_uuid)))
return 0;
return ldlm_init_export(exp);
}
/**
* Initialize OFD per-export statistics.
*
* This function sets up procfs entries for various OFD export counters. These
* counters are for per-client statistics tracked on the server.
*
* \param[in] ofd OFD device
* \param[in] exp OBD export
* \param[in] client_nid NID of client
*
* \retval 0 if successful
* \retval negative value on error
*/
static int ofd_export_stats_init(struct ofd_device *ofd,
struct obd_export *exp,
lnet_nid_t *client_nid)
{
struct obd_device *obd = ofd_obd(ofd);
struct nid_stat *stats;
int rc;
ENTRY;
LASSERT(obd->obd_uses_nid_stats);
if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
/* Self-export gets no proc entry */
RETURN(0);
rc = lprocfs_exp_setup(exp, client_nid);
if (rc != 0)
/* Mask error for already created /proc entries */
RETURN(rc == -EALREADY ? 0 : rc);
stats = exp->exp_nid_stats;
stats->nid_stats = lprocfs_alloc_stats(NUM_OBD_STATS +
LPROC_OFD_STATS_LAST,
LPROCFS_STATS_FLAG_NOPERCPU);
if (stats->nid_stats == NULL)
RETURN(-ENOMEM);
lprocfs_init_ops_stats(LPROC_OFD_STATS_LAST, stats->nid_stats);
ofd_stats_counter_init(stats->nid_stats);
rc = lprocfs_register_stats(stats->nid_proc, "stats", stats->nid_stats);
if (rc != 0) {
lprocfs_free_stats(&stats->nid_stats);
GOTO(out, rc);
}
rc = lprocfs_nid_ldlm_stats_init(stats);
if (rc != 0)
GOTO(out, rc);
out:
RETURN(rc);
}
/**
* Implementation of obd_ops::o_destroy_export.
*
* This function is called from class_export_destroy() to cleanup
* the OFD-specific data for export being destroyed.
*
* \param[in] exp OBD export
*
* \retval 0 if successful
* \retval negative value on error
*/
static int ofd_destroy_export(struct obd_export *exp)
{
struct ofd_device *ofd = ofd_exp(exp);
if (exp->exp_filter_data.fed_pending)
CERROR("%s: cli %s/%p has %lu pending on destroyed export"
"\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
exp, exp->exp_filter_data.fed_pending);
target_destroy_export(exp);
if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
&exp->exp_client_uuid)))
return 0;
ldlm_destroy_export(exp);
tgt_client_free(exp);
ofd_fmd_cleanup(exp);
/*
* discard grants once we're sure no more
* interaction with the client is possible
*/
ofd_grant_discard(exp);
ofd_fmd_cleanup(exp);
if (exp_connect_flags(exp) & OBD_CONNECT_GRANT_SHRINK) {
if (ofd->ofd_tot_granted_clients > 0)
ofd->ofd_tot_granted_clients --;
}
if (!(exp->exp_flags & OBD_OPT_FORCE))
ofd_grant_sanity_check(exp->exp_obd, __FUNCTION__);
LASSERT(list_empty(&exp->exp_filter_data.fed_mod_list));
return 0;
}
/**
* Implementation of obd_ops::o_init_export.
*
* This function is called from class_new_export() and initializes
* the OFD-specific data for new export.
*
* \param[in] exp OBD export
*
* \retval 0 if successful
* \retval negative value on error
*/
static int ofd_init_export(struct obd_export *exp)
{
int rc;
spin_lock_init(&exp->exp_filter_data.fed_lock);
INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
atomic_set(&exp->exp_filter_data.fed_soft_sync_count, 0);
spin_lock(&exp->exp_lock);
exp->exp_connecting = 1;
spin_unlock(&exp->exp_lock);
/* self-export doesn't need client data and ldlm initialization */
if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
&exp->exp_client_uuid)))
return 0;
rc = tgt_client_alloc(exp);
if (rc == 0)
ldlm_init_export(exp);
if (rc)
CERROR("%s: Can't initialize export: rc %d\n",
exp->exp_obd->obd_name, rc);
return rc;
}
int llog_init_handle(const struct lu_env *env, struct llog_handle *handle,
int flags, struct obd_uuid *uuid)
{
struct llog_log_hdr *llh;
int rc;
LASSERT(handle->lgh_hdr == NULL);
OBD_ALLOC_PTR(llh);
if (llh == NULL)
return -ENOMEM;
handle->lgh_hdr = llh;
/* first assign flags to use llog_client_ops */
llh->llh_flags = flags;
rc = llog_read_header(env, handle, uuid);
if (rc == 0) {
if (unlikely((llh->llh_flags & LLOG_F_IS_PLAIN &&
flags & LLOG_F_IS_CAT) ||
(llh->llh_flags & LLOG_F_IS_CAT &&
flags & LLOG_F_IS_PLAIN))) {
CERROR("%s: llog type is %s but initializing %s\n",
handle->lgh_ctxt->loc_obd->obd_name,
llh->llh_flags & LLOG_F_IS_CAT ?
"catalog" : "plain",
flags & LLOG_F_IS_CAT ? "catalog" : "plain");
GOTO(out, rc = -EINVAL);
} else if (llh->llh_flags &
(LLOG_F_IS_PLAIN | LLOG_F_IS_CAT)) {
/*
* it is possible to open llog without specifying llog
* type so it is taken from llh_flags
*/
flags = llh->llh_flags;
} else {
/* for some reason the llh_flags has no type set */
CERROR("llog type is not specified!\n");
GOTO(out, rc = -EINVAL);
}
if (unlikely(uuid &&
!obd_uuid_equals(uuid, &llh->llh_tgtuuid))) {
CERROR("%s: llog uuid mismatch: %s/%s\n",
handle->lgh_ctxt->loc_obd->obd_name,
(char *)uuid->uuid,
(char *)llh->llh_tgtuuid.uuid);
GOTO(out, rc = -EEXIST);
}
}
if (flags & LLOG_F_IS_CAT) {
LASSERT(list_empty(&handle->u.chd.chd_head));
INIT_LIST_HEAD(&handle->u.chd.chd_head);
llh->llh_size = sizeof(struct llog_logid_rec);
} else if (!(flags & LLOG_F_IS_PLAIN)) {
CERROR("%s: unknown flags: %#x (expected %#x or %#x)\n",
handle->lgh_ctxt->loc_obd->obd_name,
flags, LLOG_F_IS_CAT, LLOG_F_IS_PLAIN);
rc = -EINVAL;
}
out:
if (rc) {
OBD_FREE_PTR(llh);
handle->lgh_hdr = NULL;
}
return rc;
}
int llog_init_handle(const struct lu_env *env, struct llog_handle *handle,
int flags, struct obd_uuid *uuid)
{
int chunk_size = handle->lgh_ctxt->loc_chunk_size;
enum llog_flag fmt = flags & LLOG_F_EXT_MASK;
struct llog_log_hdr *llh;
int rc;
LASSERT(!handle->lgh_hdr);
LASSERT(chunk_size >= LLOG_MIN_CHUNK_SIZE);
llh = libcfs_kvzalloc(sizeof(*llh), GFP_NOFS);
if (!llh)
return -ENOMEM;
handle->lgh_hdr = llh;
handle->lgh_hdr_size = chunk_size;
/* first assign flags to use llog_client_ops */
llh->llh_flags = flags;
rc = llog_read_header(env, handle, uuid);
if (rc == 0) {
if (unlikely((llh->llh_flags & LLOG_F_IS_PLAIN &&
flags & LLOG_F_IS_CAT) ||
(llh->llh_flags & LLOG_F_IS_CAT &&
flags & LLOG_F_IS_PLAIN))) {
CERROR("%s: llog type is %s but initializing %s\n",
handle->lgh_ctxt->loc_obd->obd_name,
llh->llh_flags & LLOG_F_IS_CAT ?
"catalog" : "plain",
flags & LLOG_F_IS_CAT ? "catalog" : "plain");
rc = -EINVAL;
goto out;
} else if (llh->llh_flags &
(LLOG_F_IS_PLAIN | LLOG_F_IS_CAT)) {
/*
* it is possible to open llog without specifying llog
* type so it is taken from llh_flags
*/
flags = llh->llh_flags;
} else {
/* for some reason the llh_flags has no type set */
CERROR("llog type is not specified!\n");
rc = -EINVAL;
goto out;
}
if (unlikely(uuid &&
!obd_uuid_equals(uuid, &llh->llh_tgtuuid))) {
CERROR("%s: llog uuid mismatch: %s/%s\n",
handle->lgh_ctxt->loc_obd->obd_name,
(char *)uuid->uuid,
(char *)llh->llh_tgtuuid.uuid);
rc = -EEXIST;
goto out;
}
}
if (flags & LLOG_F_IS_CAT) {
LASSERT(list_empty(&handle->u.chd.chd_head));
INIT_LIST_HEAD(&handle->u.chd.chd_head);
llh->llh_size = sizeof(struct llog_logid_rec);
llh->llh_flags |= LLOG_F_IS_FIXSIZE;
} else if (!(flags & LLOG_F_IS_PLAIN)) {
CERROR("%s: unknown flags: %#x (expected %#x or %#x)\n",
handle->lgh_ctxt->loc_obd->obd_name,
flags, LLOG_F_IS_CAT, LLOG_F_IS_PLAIN);
rc = -EINVAL;
}
llh->llh_flags |= fmt;
out:
if (rc) {
kvfree(llh);
handle->lgh_hdr = NULL;
}
return rc;
}
/*
* Handle quota request from slave.
*
* \param env - is the environment passed by the caller
* \param ld - is the lu device associated with the qmt
* \param req - is the quota acquire request
*/
static int qmt_dqacq(const struct lu_env *env, struct lu_device *ld,
struct ptlrpc_request *req)
{
struct qmt_device *qmt = lu2qmt_dev(ld);
struct quota_body *qbody, *repbody;
struct obd_uuid *uuid;
struct ldlm_lock *lock;
struct lquota_entry *lqe;
int pool_id, pool_type, qtype;
int rc;
ENTRY;
qbody = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_BODY);
if (qbody == NULL)
RETURN(err_serious(-EPROTO));
repbody = req_capsule_server_get(&req->rq_pill, &RMF_QUOTA_BODY);
if (repbody == NULL)
RETURN(err_serious(-EFAULT));
/* verify if global lock is stale */
if (!lustre_handle_is_used(&qbody->qb_glb_lockh))
RETURN(-ENOLCK);
lock = ldlm_handle2lock(&qbody->qb_glb_lockh);
if (lock == NULL)
RETURN(-ENOLCK);
LDLM_LOCK_PUT(lock);
uuid = &req->rq_export->exp_client_uuid;
if (req_is_rel(qbody->qb_flags) + req_is_acq(qbody->qb_flags) +
req_is_preacq(qbody->qb_flags) > 1) {
CERROR("%s: malformed quota request with conflicting flags set "
"(%x) from slave %s\n", qmt->qmt_svname,
qbody->qb_flags, obd_uuid2str(uuid));
RETURN(-EPROTO);
}
if (req_is_acq(qbody->qb_flags) || req_is_preacq(qbody->qb_flags)) {
/* acquire and pre-acquire should use a valid ID lock */
if (!lustre_handle_is_used(&qbody->qb_lockh))
RETURN(-ENOLCK);
lock = ldlm_handle2lock(&qbody->qb_lockh);
if (lock == NULL)
/* no lock associated with this handle */
RETURN(-ENOLCK);
LDLM_DEBUG(lock, "%sacquire request",
req_is_preacq(qbody->qb_flags) ? "pre" : "");
if (!obd_uuid_equals(&lock->l_export->exp_client_uuid, uuid)) {
/* sorry, no way to cheat ... */
LDLM_LOCK_PUT(lock);
RETURN(-ENOLCK);
}
if ((lock->l_flags & LDLM_FL_AST_SENT) != 0) {
struct ptlrpc_service_part *svc;
unsigned int timeout;
svc = req->rq_rqbd->rqbd_svcpt;
timeout = at_est2timeout(at_get(&svc->scp_at_estimate));
timeout = max(timeout, ldlm_timeout);
/* lock is being cancelled, prolong timeout */
ldlm_refresh_waiting_lock(lock, timeout);
}
LDLM_LOCK_PUT(lock);
}
/* extract pool & quota information from global index FID packed in the
* request */
rc = lquota_extract_fid(&qbody->qb_fid, &pool_id, &pool_type, &qtype);
if (rc)
RETURN(-EINVAL);
/* Find the quota entry associated with the quota id */
lqe = qmt_pool_lqe_lookup(env, qmt, pool_id, pool_type, qtype,
&qbody->qb_id);
if (IS_ERR(lqe))
RETURN(PTR_ERR(lqe));
/* process quota request */
rc = qmt_dqacq0(env, lqe, qmt, uuid, qbody->qb_flags, qbody->qb_count,
qbody->qb_usage, repbody);
if (lustre_handle_is_used(&qbody->qb_lockh))
/* return current qunit value only to slaves owning an per-ID
* quota lock. For enqueue, the qunit value will be returned in
* the LVB */
repbody->qb_qunit = lqe->lqe_qunit;
lqe_putref(lqe);
RETURN(rc);
}
