* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_FID
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-# include <linux/module.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-#endif
-
+#include <libcfs/libcfs.h>
+#include <linux/module.h>
#include <obd.h>
#include <obd_class.h>
#include <dt_object.h>
#include <lustre_fid.h>
#include "fid_internal.h"
-int client_fid_init(struct obd_export *exp, enum lu_cli_type type)
-{
- struct client_obd *cli = &exp->exp_obd->u.cli;
- char *prefix;
- int rc;
- ENTRY;
-
- OBD_ALLOC_PTR(cli->cl_seq);
- if (cli->cl_seq == NULL)
- RETURN(-ENOMEM);
-
- OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
- if (prefix == NULL)
- GOTO(out_free_seq, rc = -ENOMEM);
-
- snprintf(prefix, MAX_OBD_NAME + 5, "cli-%s",
- exp->exp_obd->obd_name);
-
- /* Init client side sequence-manager */
- rc = seq_client_init(cli->cl_seq, exp, type, prefix, NULL);
- OBD_FREE(prefix, MAX_OBD_NAME + 5);
- if (rc)
- GOTO(out_free_seq, rc);
-
- RETURN(rc);
-out_free_seq:
- OBD_FREE_PTR(cli->cl_seq);
- cli->cl_seq = NULL;
- return rc;
-}
-EXPORT_SYMBOL(client_fid_init);
-
-int client_fid_fini(struct obd_export *exp)
-{
- struct client_obd *cli = &exp->exp_obd->u.cli;
- ENTRY;
-
- if (cli->cl_seq != NULL) {
- seq_client_fini(cli->cl_seq);
- OBD_FREE_PTR(cli->cl_seq);
- cli->cl_seq = NULL;
- }
-
- RETURN(0);
-}
-EXPORT_SYMBOL(client_fid_fini);
-
-#ifdef __KERNEL__
static void seq_server_proc_fini(struct lu_server_seq *seq);
/* Assigns client to sequence controller node. */
-int seq_server_set_cli(struct lu_server_seq *seq,
- struct lu_client_seq *cli,
- const struct lu_env *env)
+int seq_server_set_cli(const struct lu_env *env, struct lu_server_seq *seq,
+ struct lu_client_seq *cli)
{
int rc = 0;
ENTRY;
RETURN(rc);
}
+int seq_server_alloc_spec(struct lu_server_seq *seq,
+ struct lu_seq_range *spec,
+ const struct lu_env *env)
+{
+ struct lu_seq_range *space = &seq->lss_space;
+ int rc = -ENOSPC;
+ ENTRY;
+
+ /*
+ * In some cases (like recovery after a disaster)
+ * we may need to allocate sequences manually
+ * Notice some sequences can be lost if requested
+ * range doesn't start at the beginning of current
+ * free space. Also notice it's not possible now
+ * to allocate sequences out of natural order.
+ */
+ if (spec->lsr_start >= spec->lsr_end)
+ RETURN(-EINVAL);
+ if (spec->lsr_flags != LU_SEQ_RANGE_MDT &&
+ spec->lsr_flags != LU_SEQ_RANGE_OST)
+ RETURN(-EINVAL);
+
+ mutex_lock(&seq->lss_mutex);
+ if (spec->lsr_start >= space->lsr_start) {
+ space->lsr_start = spec->lsr_end;
+ rc = seq_store_update(env, seq, spec, 1 /* sync */);
+
+ LCONSOLE_INFO("%s: "DRANGE" sequences allocated: rc = %d \n",
+ seq->lss_name, PRANGE(spec), rc);
+ }
+ mutex_unlock(&seq->lss_mutex);
+
+ RETURN(rc);
+}
+
static int __seq_set_init(const struct lu_env *env,
struct lu_server_seq *seq)
{
* flaged as sync write op.
*/
static int range_alloc_set(const struct lu_env *env,
- struct lu_seq_range *out,
- struct lu_server_seq *seq)
+ struct lu_seq_range *out,
+ struct lu_server_seq *seq)
{
struct lu_seq_range *space = &seq->lss_space;
struct lu_seq_range *loset = &seq->lss_lowater_set;
/* Saving new range to allocation space. */
*space = seq->lss_cli->lcs_space;
LASSERT(range_is_sane(space));
+ if (seq->lss_cli->lcs_srv == NULL) {
+ struct lu_server_fld *fld;
+
+ /* Insert it to the local FLDB */
+ fld = seq->lss_site->ss_server_fld;
+ mutex_lock(&fld->lsf_lock);
+ rc = fld_insert_entry(env, fld, space);
+ mutex_unlock(&fld->lsf_lock);
+ }
}
rc = range_alloc_set(env, out, seq);
RETURN(rc);
}
-static int seq_req_handle(struct ptlrpc_request *req,
- const struct lu_env *env,
- struct seq_thread_info *info)
+static int seq_handler(struct tgt_session_info *tsi)
{
- struct lu_seq_range *out, *tmp;
- struct lu_site *site;
- int rc = -EPROTO;
- __u32 *opc;
- ENTRY;
+ struct lu_seq_range *out, *tmp;
+ struct lu_site *site;
+ int rc;
+ __u32 *opc;
- LASSERT(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY));
- site = req->rq_export->exp_obd->obd_lu_dev->ld_site;
- LASSERT(site != NULL);
+ ENTRY;
- rc = req_capsule_server_pack(info->sti_pill);
- if (rc)
- RETURN(err_serious(rc));
+ LASSERT(!(lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY));
+ site = tsi->tsi_exp->exp_obd->obd_lu_dev->ld_site;
+ LASSERT(site != NULL);
- opc = req_capsule_client_get(info->sti_pill, &RMF_SEQ_OPC);
- if (opc != NULL) {
- out = req_capsule_server_get(info->sti_pill, &RMF_SEQ_RANGE);
- if (out == NULL)
- RETURN(err_serious(-EPROTO));
+ opc = req_capsule_client_get(tsi->tsi_pill, &RMF_SEQ_OPC);
+ if (opc != NULL) {
+ out = req_capsule_server_get(tsi->tsi_pill, &RMF_SEQ_RANGE);
+ if (out == NULL)
+ RETURN(err_serious(-EPROTO));
- tmp = req_capsule_client_get(info->sti_pill, &RMF_SEQ_RANGE);
+ tmp = req_capsule_client_get(tsi->tsi_pill, &RMF_SEQ_RANGE);
- /* seq client passed mdt id, we need to pass that using out
- * range parameter */
+ /* seq client passed mdt id, we need to pass that using out
+ * range parameter */
- out->lsr_index = tmp->lsr_index;
- out->lsr_flags = tmp->lsr_flags;
- rc = seq_server_handle(site, env, *opc, out);
- } else
- rc = err_serious(-EPROTO);
+ out->lsr_index = tmp->lsr_index;
+ out->lsr_flags = tmp->lsr_flags;
+ rc = seq_server_handle(site, tsi->tsi_env, *opc, out);
+ } else {
+ rc = err_serious(-EPROTO);
+ }
- RETURN(rc);
+ RETURN(rc);
}
+struct tgt_handler seq_handlers[] = {
+TGT_SEQ_HDL(HABEO_REFERO, SEQ_QUERY, seq_handler),
+};
+EXPORT_SYMBOL(seq_handlers);
+
/* context key constructor/destructor: seq_key_init, seq_key_fini */
LU_KEY_INIT_FINI(seq, struct seq_thread_info);
/* context key: seq_thread_key */
LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD | LCT_DT_THREAD);
-static void seq_thread_info_init(struct ptlrpc_request *req,
- struct seq_thread_info *info)
-{
- info->sti_pill = &req->rq_pill;
- /* Init request capsule */
- req_capsule_init(info->sti_pill, req, RCL_SERVER);
- req_capsule_set(info->sti_pill, &RQF_SEQ_QUERY);
-}
-
-static void seq_thread_info_fini(struct seq_thread_info *info)
-{
- req_capsule_fini(info->sti_pill);
-}
-
-int seq_handle(struct ptlrpc_request *req)
-{
- const struct lu_env *env;
- struct seq_thread_info *info;
- int rc;
-
- env = req->rq_svc_thread->t_env;
- LASSERT(env != NULL);
-
- info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
- LASSERT(info != NULL);
-
- seq_thread_info_init(req, info);
- rc = seq_req_handle(req, env, info);
- /* XXX: we don't need replay but MDT assign transno in any case,
- * remove it manually before reply*/
- lustre_msg_set_transno(req->rq_repmsg, 0);
- seq_thread_info_fini(info);
-
- return rc;
-}
-EXPORT_SYMBOL(seq_handle);
-
-/*
- * Entry point for handling FLD RPCs called from MDT.
- */
-int seq_query(struct com_thread_info *info)
-{
- return seq_handle(info->cti_pill->rc_req);
-}
-EXPORT_SYMBOL(seq_query);
-
+extern const struct file_operations seq_fld_proc_seq_fops;
-#ifdef LPROCFS
static int seq_server_proc_init(struct lu_server_seq *seq)
{
- int rc;
- ENTRY;
+#ifdef LPROCFS
+ int rc;
+ ENTRY;
- seq->lss_proc_dir = lprocfs_register(seq->lss_name,
- seq_type_proc_dir,
- NULL, NULL);
- if (IS_ERR(seq->lss_proc_dir)) {
- rc = PTR_ERR(seq->lss_proc_dir);
- RETURN(rc);
- }
+ seq->lss_proc_dir = lprocfs_seq_register(seq->lss_name,
+ seq_type_proc_dir,
+ NULL, NULL);
+ if (IS_ERR(seq->lss_proc_dir)) {
+ rc = PTR_ERR(seq->lss_proc_dir);
+ RETURN(rc);
+ }
- rc = lprocfs_add_vars(seq->lss_proc_dir,
- seq_server_proc_list, seq);
- if (rc) {
- CERROR("%s: Can't init sequence manager "
- "proc, rc %d\n", seq->lss_name, rc);
- GOTO(out_cleanup, rc);
- }
+ rc = lprocfs_seq_add_vars(seq->lss_proc_dir,
+ seq_server_proc_list, seq);
+ if (rc) {
+ CERROR("%s: Can't init sequence manager "
+ "proc, rc %d\n", seq->lss_name, rc);
+ GOTO(out_cleanup, rc);
+ }
- RETURN(0);
+ if (seq->lss_type == LUSTRE_SEQ_CONTROLLER) {
+ rc = lprocfs_seq_create(seq->lss_proc_dir, "fldb", 0644,
+ &seq_fld_proc_seq_fops, seq);
+ if (rc) {
+ CERROR("%s: Can't create fldb for sequence manager "
+ "proc: rc = %d\n", seq->lss_name, rc);
+ GOTO(out_cleanup, rc);
+ }
+ }
+
+ RETURN(0);
out_cleanup:
- seq_server_proc_fini(seq);
- return rc;
+ seq_server_proc_fini(seq);
+ return rc;
+#else /* LPROCFS */
+ return 0;
+#endif
}
static void seq_server_proc_fini(struct lu_server_seq *seq)
{
+#ifdef LPROCFS
ENTRY;
if (seq->lss_proc_dir != NULL) {
if (!IS_ERR(seq->lss_proc_dir))
seq->lss_proc_dir = NULL;
}
EXIT;
+#endif /* LPROCFS */
}
-#else
-static int seq_server_proc_init(struct lu_server_seq *seq)
-{
- return 0;
-}
-
-static void seq_server_proc_fini(struct lu_server_seq *seq)
-{
- return;
-}
-#endif
-
-int seq_server_init(struct lu_server_seq *seq,
+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,
- const struct lu_env *env)
+ struct seq_server_site *ss)
{
- int rc, is_srv = (type == LUSTRE_SEQ_SERVER);
- ENTRY;
+ int rc, is_srv = (type == LUSTRE_SEQ_SERVER);
+ ENTRY;
- LASSERT(dev != NULL);
- LASSERT(prefix != NULL);
+ 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;
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",
}
EXPORT_SYMBOL(seq_site_fini);
-cfs_proc_dir_entry_t *seq_type_proc_dir = NULL;
-
-static int __init fid_mod_init(void)
+int fid_server_mod_init(void)
{
- seq_type_proc_dir = lprocfs_register(LUSTRE_SEQ_NAME,
- proc_lustre_root,
- NULL, NULL);
- if (IS_ERR(seq_type_proc_dir))
- return PTR_ERR(seq_type_proc_dir);
-
- LU_CONTEXT_KEY_INIT(&seq_thread_key);
- lu_context_key_register(&seq_thread_key);
- return 0;
+ LU_CONTEXT_KEY_INIT(&seq_thread_key);
+ return lu_context_key_register(&seq_thread_key);
}
-static void __exit fid_mod_exit(void)
+void fid_server_mod_exit(void)
{
- lu_context_key_degister(&seq_thread_key);
- if (seq_type_proc_dir != NULL && !IS_ERR(seq_type_proc_dir)) {
- lprocfs_remove(&seq_type_proc_dir);
- seq_type_proc_dir = NULL;
- }
+ lu_context_key_degister(&seq_thread_key);
}
-
-MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre FID Module");
-MODULE_LICENSE("GPL");
-
-cfs_module(fid, "0.1.0", fid_mod_init, fid_mod_exit);
-#endif