#ifdef __KERNEL__
# include <libcfs/libcfs.h>
# include <linux/module.h>
-# include <linux/jbd.h>
# include <asm/div64.h>
#else /* __KERNEL__ */
# include <liblustre.h>
#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
#include <obd_support.h>
#include <lprocfs_status.h>
-
-#include <dt_object.h>
-#include <md_object.h>
#include <lustre_req_layout.h>
#include <lustre_fld.h>
#include <lustre_mdc.h>
static void fld_enter_request(struct client_obd *cli)
{
- struct mdc_cache_waiter mcw;
- struct l_wait_info lwi = { 0 };
-
- client_obd_list_lock(&cli->cl_loi_list_lock);
- if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
- cfs_list_add_tail(&mcw.mcw_entry, &cli->cl_cache_waiters);
- cfs_waitq_init(&mcw.mcw_waitq);
- client_obd_list_unlock(&cli->cl_loi_list_lock);
- l_wait_event(mcw.mcw_waitq, fld_req_avail(cli, &mcw), &lwi);
- } else {
- cli->cl_r_in_flight++;
- client_obd_list_unlock(&cli->cl_loi_list_lock);
- }
+ struct mdc_cache_waiter mcw;
+ struct l_wait_info lwi = { 0 };
+
+ client_obd_list_lock(&cli->cl_loi_list_lock);
+ if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
+ cfs_list_add_tail(&mcw.mcw_entry, &cli->cl_cache_waiters);
+ init_waitqueue_head(&mcw.mcw_waitq);
+ client_obd_list_unlock(&cli->cl_loi_list_lock);
+ l_wait_event(mcw.mcw_waitq, fld_req_avail(cli, &mcw), &lwi);
+ } else {
+ cli->cl_r_in_flight++;
+ client_obd_list_unlock(&cli->cl_loi_list_lock);
+ }
}
static void fld_exit_request(struct client_obd *cli)
{
- cfs_list_t *l, *tmp;
- struct mdc_cache_waiter *mcw;
-
- client_obd_list_lock(&cli->cl_loi_list_lock);
- cli->cl_r_in_flight--;
- cfs_list_for_each_safe(l, tmp, &cli->cl_cache_waiters) {
-
- if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
- /* No free request slots anymore */
- break;
- }
-
- mcw = cfs_list_entry(l, struct mdc_cache_waiter, mcw_entry);
- cfs_list_del_init(&mcw->mcw_entry);
- cli->cl_r_in_flight++;
- cfs_waitq_signal(&mcw->mcw_waitq);
- }
- client_obd_list_unlock(&cli->cl_loi_list_lock);
+ cfs_list_t *l, *tmp;
+ struct mdc_cache_waiter *mcw;
+
+ client_obd_list_lock(&cli->cl_loi_list_lock);
+ cli->cl_r_in_flight--;
+ cfs_list_for_each_safe(l, tmp, &cli->cl_cache_waiters) {
+
+ if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
+ /* No free request slots anymore */
+ break;
+ }
+
+ mcw = cfs_list_entry(l, struct mdc_cache_waiter, mcw_entry);
+ cfs_list_del_init(&mcw->mcw_entry);
+ cli->cl_r_in_flight++;
+ wake_up(&mcw->mcw_waitq);
+ }
+ client_obd_list_unlock(&cli->cl_loi_list_lock);
}
static int fld_rrb_hash(struct lu_client_fld *fld,
int hash;
ENTRY;
- hash = fld_rrb_hash(fld, seq);
+ /* Because almost all of special sequence located in MDT0,
+ * it should go to index 0 directly, instead of calculating
+ * hash again, and also if other MDTs is not being connected,
+ * the fld lookup requests(for seq on MDT0) should not be
+ * blocked because of other MDTs */
+ if (fid_seq_is_norm(seq))
+ hash = fld_rrb_hash(fld, seq);
+ else
+ hash = 0;
cfs_list_for_each_entry(target, &fld->lcf_targets, ft_chain) {
if (target->ft_idx == hash)
#ifdef LPROCFS
static int fld_client_proc_init(struct lu_client_fld *fld)
{
- int rc;
- ENTRY;
-
- fld->lcf_proc_dir = lprocfs_register(fld->lcf_name,
- fld_type_proc_dir,
- NULL, NULL);
-
- if (IS_ERR(fld->lcf_proc_dir)) {
- CERROR("%s: LProcFS failed in fld-init\n",
- fld->lcf_name);
- rc = PTR_ERR(fld->lcf_proc_dir);
- RETURN(rc);
- }
+ int rc;
+ ENTRY;
- rc = lprocfs_add_vars(fld->lcf_proc_dir,
- fld_client_proc_list, fld);
- if (rc) {
- CERROR("%s: Can't init FLD proc, rc %d\n",
- fld->lcf_name, rc);
- GOTO(out_cleanup, rc);
- }
+ fld->lcf_proc_dir = lprocfs_seq_register(fld->lcf_name,
+ fld_type_proc_dir,
+ NULL, NULL);
+ if (IS_ERR(fld->lcf_proc_dir)) {
+ CERROR("%s: LProcFS failed in fld-init\n",
+ fld->lcf_name);
+ rc = PTR_ERR(fld->lcf_proc_dir);
+ RETURN(rc);
+ }
+
+ rc = lprocfs_seq_add_vars(fld->lcf_proc_dir,
+ fld_client_proc_list, fld);
+ if (rc) {
+ CERROR("%s: Can't init FLD proc, rc %d\n",
+ fld->lcf_name, rc);
+ GOTO(out_cleanup, rc);
+ }
- RETURN(0);
+ RETURN(0);
out_cleanup:
- fld_client_proc_fini(fld);
- return rc;
+ fld_client_proc_fini(fld);
+ return rc;
}
void fld_client_proc_fini(struct lu_client_fld *fld)
EXPORT_SYMBOL(fld_client_fini);
int fld_client_rpc(struct obd_export *exp,
- struct lu_seq_range *range, __u32 fld_op)
+ struct lu_seq_range *range, __u32 fld_op,
+ struct ptlrpc_request **reqp)
{
- struct ptlrpc_request *req;
- struct lu_seq_range *prange;
- __u32 *op;
- int rc;
- ENTRY;
-
- LASSERT(exp != NULL);
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_FLD_QUERY,
- LUSTRE_MDS_VERSION, FLD_QUERY);
- if (req == NULL)
- RETURN(-ENOMEM);
-
- op = req_capsule_client_get(&req->rq_pill, &RMF_FLD_OPC);
- *op = fld_op;
-
- prange = req_capsule_client_get(&req->rq_pill, &RMF_FLD_MDFLD);
- *prange = *range;
+ struct ptlrpc_request *req = NULL;
+ struct lu_seq_range *prange;
+ __u32 *op;
+ int rc = 0;
+ struct obd_import *imp;
+ ENTRY;
- ptlrpc_request_set_replen(req);
+ LASSERT(exp != NULL);
+
+ imp = class_exp2cliimp(exp);
+ switch (fld_op) {
+ case FLD_QUERY:
+ req = ptlrpc_request_alloc_pack(imp, &RQF_FLD_QUERY,
+ LUSTRE_MDS_VERSION, FLD_QUERY);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ /* XXX: only needed when talking to old server(< 2.6), it should
+ * be removed when < 2.6 server is not supported */
+ op = req_capsule_client_get(&req->rq_pill, &RMF_FLD_OPC);
+ *op = FLD_LOOKUP;
+
+ if (imp->imp_connect_flags_orig & OBD_CONNECT_MDS_MDS)
+ req->rq_allow_replay = 1;
+ break;
+ case FLD_READ:
+ req = ptlrpc_request_alloc_pack(imp, &RQF_FLD_READ,
+ LUSTRE_MDS_VERSION, FLD_READ);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA,
+ RCL_SERVER, PAGE_CACHE_SIZE);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ if (rc != 0)
+ RETURN(rc);
+
+ prange = req_capsule_client_get(&req->rq_pill, &RMF_FLD_MDFLD);
+ *prange = *range;
+ ptlrpc_request_set_replen(req);
req->rq_request_portal = FLD_REQUEST_PORTAL;
+ req->rq_reply_portal = MDC_REPLY_PORTAL;
ptlrpc_at_set_req_timeout(req);
- if (fld_op != FLD_LOOKUP)
- mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
- fld_enter_request(&exp->exp_obd->u.cli);
- rc = ptlrpc_queue_wait(req);
- fld_exit_request(&exp->exp_obd->u.cli);
- if (fld_op != FLD_LOOKUP)
- mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
- if (rc)
- GOTO(out_req, rc);
-
- prange = req_capsule_server_get(&req->rq_pill, &RMF_FLD_MDFLD);
- if (prange == NULL)
- GOTO(out_req, rc = -EFAULT);
- *range = *prange;
- EXIT;
+ fld_enter_request(&exp->exp_obd->u.cli);
+ rc = ptlrpc_queue_wait(req);
+ fld_exit_request(&exp->exp_obd->u.cli);
+ if (rc)
+ GOTO(out_req, rc);
+
+ if (fld_op == FLD_QUERY) {
+ prange = req_capsule_server_get(&req->rq_pill,
+ &RMF_FLD_MDFLD);
+ if (prange == NULL)
+ GOTO(out_req, rc = -EFAULT);
+ *range = *prange;
+ }
+
+ EXIT;
out_req:
- ptlrpc_req_finished(req);
- return rc;
+ if (rc != 0 || reqp == NULL) {
+ ptlrpc_req_finished(req);
+ req = NULL;
+ }
+
+ if (reqp != NULL)
+ *reqp = req;
+
+ return rc;
}
int fld_client_lookup(struct lu_client_fld *fld, seqno_t seq, mdsno_t *mds,
- __u32 flags, const struct lu_env *env)
+ __u32 flags, const struct lu_env *env)
{
- struct lu_seq_range res;
- struct lu_fld_target *target;
- int rc;
- ENTRY;
+ struct lu_seq_range res = { 0 };
+ struct lu_fld_target *target;
+ int rc;
+ ENTRY;
fld->lcf_flags |= LUSTRE_FLD_RUN;
"target %s (idx "LPU64")\n", fld->lcf_name, seq,
fld_target_name(target), target->ft_idx);
- res.lsr_start = seq;
- res.lsr_flags = flags;
-#ifdef __KERNEL__
- if (target->ft_srv != NULL) {
+ res.lsr_start = seq;
+ fld_range_set_type(&res, flags);
+
+#if defined(__KERNEL__) && defined(HAVE_SERVER_SUPPORT)
+ if (target->ft_srv != NULL) {
LASSERT(env != NULL);
rc = fld_server_lookup(env, target->ft_srv, seq, &res);
- } else {
+ } else
#endif
- rc = fld_client_rpc(target->ft_exp,
- &res, FLD_LOOKUP);
-#ifdef __KERNEL__
- }
-#endif
-
- if (rc == 0) {
- *mds = res.lsr_index;
+ {
+ rc = fld_client_rpc(target->ft_exp, &res, FLD_QUERY, NULL);
+ }
+ if (rc == 0) {
+ *mds = res.lsr_index;
fld_cache_insert(fld->lcf_cache, &res);
- }
- RETURN(rc);
+ }
+
+ RETURN(rc);
}
EXPORT_SYMBOL(fld_client_lookup);
fld_cache_flush(fld->lcf_cache);
}
EXPORT_SYMBOL(fld_client_flush);
+
+#ifdef __KERNEL__
+
+struct proc_dir_entry *fld_type_proc_dir;
+
+static int __init fld_mod_init(void)
+{
+ fld_type_proc_dir = lprocfs_seq_register(LUSTRE_FLD_NAME,
+ proc_lustre_root,
+ NULL, NULL);
+ if (IS_ERR(fld_type_proc_dir))
+ return PTR_ERR(fld_type_proc_dir);
+
+#ifdef HAVE_SERVER_SUPPORT
+ fld_server_mod_init();
+#endif
+
+ return 0;
+}
+
+static void __exit fld_mod_exit(void)
+{
+#ifdef HAVE_SERVER_SUPPORT
+ fld_server_mod_exit();
+#endif
+
+ if (fld_type_proc_dir != NULL && !IS_ERR(fld_type_proc_dir)) {
+ lprocfs_remove(&fld_type_proc_dir);
+ fld_type_proc_dir = NULL;
+ }
+}
+
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Lustre FLD");
+MODULE_LICENSE("GPL");
+
+cfs_module(mdd, LUSTRE_VERSION_STRING, fld_mod_init, fld_mod_exit);
+#endif /* __KERNEL__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff