* 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, 2014, 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 <md_object.h>
#include <obd_support.h>
#include <lustre_req_layout.h>
#include <lustre_fid.h>
#include "fid_internal.h"
-#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;
*/
mutex_lock(&seq->lss_mutex);
- if (cli == NULL) {
- CDEBUG(D_INFO, "%s: Detached sequence client %s\n",
- seq->lss_name, cli->lcs_name);
- seq->lss_cli = cli;
- GOTO(out_up, rc = 0);
- }
+ if (cli == NULL) {
+ CDEBUG(D_INFO, "%s: Detached sequence client\n", seq->lss_name);
+ seq->lss_cli = NULL;
+ GOTO(out_up, rc = 0);
+ }
- if (seq->lss_cli != NULL) {
- CERROR("%s: Sequence controller is already "
- "assigned\n", seq->lss_name);
- GOTO(out_up, rc = -EINVAL);
- }
+ if (seq->lss_cli != NULL) {
+ CDEBUG(D_HA, "%s: Sequence controller is already "
+ "assigned\n", seq->lss_name);
+ GOTO(out_up, rc = -EEXIST);
+ }
CDEBUG(D_INFO, "%s: Attached sequence controller %s\n",
seq->lss_name, cli->lcs_name);
* allocate \a w units of sequence from range \a from.
*/
static inline void range_alloc(struct lu_seq_range *to,
- struct lu_seq_range *from,
- __u64 width)
+ struct lu_seq_range *from,
+ __u64 width)
{
- width = min(range_space(from), width);
- to->lsr_start = from->lsr_start;
- to->lsr_end = from->lsr_start + width;
- from->lsr_start += width;
+ width = min(lu_seq_range_space(from), width);
+ to->lsr_start = from->lsr_start;
+ to->lsr_end = from->lsr_start + width;
+ from->lsr_start += width;
}
/**
int rc;
ENTRY;
- LASSERT(range_is_sane(space));
+ LASSERT(lu_seq_range_is_sane(space));
- if (range_is_exhausted(space)) {
+ if (lu_seq_range_is_exhausted(space)) {
CERROR("%s: Sequences space is exhausted\n",
seq->lss_name);
RETURN(-ENOSPC);
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;
- struct lu_seq_range *hiset = &seq->lss_hiwater_set;
- int rc = 0;
+ struct lu_seq_range *space = &seq->lss_space;
+ struct lu_seq_range *loset = &seq->lss_lowater_set;
+ struct lu_seq_range *hiset = &seq->lss_hiwater_set;
+ int rc = 0;
- if (range_is_zero(loset))
- __seq_set_init(env, seq);
+ if (lu_seq_range_is_zero(loset))
+ __seq_set_init(env, seq);
- if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */
- loset->lsr_start = loset->lsr_end;
+ if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */
+ loset->lsr_start = loset->lsr_end;
- if (range_is_exhausted(loset)) {
- /* reached high water mark. */
+ if (lu_seq_range_is_exhausted(loset)) {
+ /* reached high water mark. */
struct lu_device *dev = seq->lss_site->ss_lu->ls_top_dev;
- int obd_num_clients = dev->ld_obd->obd_num_exports;
- __u64 set_sz;
+ int obd_num_clients = dev->ld_obd->obd_num_exports;
+ __u64 set_sz;
- /* calculate new seq width based on number of clients */
- set_sz = max(seq->lss_set_width,
- obd_num_clients * seq->lss_width);
- set_sz = min(range_space(space), set_sz);
+ /* calculate new seq width based on number of clients */
+ set_sz = max(seq->lss_set_width,
+ obd_num_clients * seq->lss_width);
+ set_sz = min(lu_seq_range_space(space), set_sz);
- /* Switch to hiwater range now */
- *loset = *hiset;
- /* allocate new hiwater range */
- range_alloc(hiset, space, set_sz);
+ /* Switch to hiwater range now */
+ *loset = *hiset;
+ /* allocate new hiwater range */
+ range_alloc(hiset, space, set_sz);
- /* update ondisk seq with new *space */
- rc = seq_store_update(env, seq, NULL, seq->lss_need_sync);
- }
+ /* update ondisk seq with new *space */
+ rc = seq_store_update(env, seq, NULL, seq->lss_need_sync);
+ }
- LASSERTF(!range_is_exhausted(loset) || range_is_sane(loset),
- DRANGE"\n", PRANGE(loset));
+ LASSERTF(!lu_seq_range_is_exhausted(loset) ||
+ lu_seq_range_is_sane(loset),
+ DRANGE"\n", PRANGE(loset));
- if (rc == 0)
- range_alloc(out, loset, seq->lss_width);
+ if (rc == 0)
+ range_alloc(out, loset, seq->lss_width);
- RETURN(rc);
+ RETURN(rc);
}
-static int __seq_server_alloc_meta(struct lu_server_seq *seq,
- struct lu_seq_range *out,
- const struct lu_env *env)
+/**
+ * Check if the sequence server has sequence avaible
+ *
+ * Check if the sequence server has sequence avaible, if not, then
+ * allocating super sequence from sequence manager (MDT0).
+ *
+ * \param[in] env execution environment
+ * \param[in] seq server sequence
+ *
+ * \retval negative errno if allocating new sequence fails
+ * \retval 0 if there is enough sequence or allocating
+ * new sequence succeeds
+ */
+int seq_server_check_and_alloc_super(const struct lu_env *env,
+ struct lu_server_seq *seq)
{
struct lu_seq_range *space = &seq->lss_space;
int rc = 0;
ENTRY;
- LASSERT(range_is_sane(space));
-
/* Check if available space ends and allocate new super seq */
- if (range_is_exhausted(space)) {
+ if (lu_seq_range_is_exhausted(space)) {
if (!seq->lss_cli) {
CERROR("%s: No sequence controller is attached.\n",
seq->lss_name);
rc = seq_client_alloc_super(seq->lss_cli, env);
if (rc) {
- CERROR("%s: Can't allocate super-sequence, rc %d\n",
- seq->lss_name, rc);
+ CDEBUG(D_HA, "%s: Can't allocate super-sequence:"
+ " rc %d\n", seq->lss_name, rc);
RETURN(rc);
}
/* Saving new range to allocation space. */
*space = seq->lss_cli->lcs_space;
- LASSERT(range_is_sane(space));
+ LASSERT(lu_seq_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);
+ }
+ }
+
+ if (lu_seq_range_is_zero(&seq->lss_lowater_set))
+ __seq_set_init(env, seq);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(seq_server_check_and_alloc_super);
+
+static int __seq_server_alloc_meta(struct lu_server_seq *seq,
+ struct lu_seq_range *out,
+ const struct lu_env *env)
+{
+ struct lu_seq_range *space = &seq->lss_space;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(lu_seq_range_is_sane(space));
+
+ rc = seq_server_check_and_alloc_super(env, seq);
+ if (rc < 0) {
+ CERROR("%s: Allocated super-sequence failed: rc = %d\n",
+ seq->lss_name, rc);
+ RETURN(rc);
}
rc = range_alloc_set(env, out, seq);
ENTRY;
ss_site = lu_site2seq(site);
+
switch (opc) {
case SEQ_ALLOC_META:
if (!ss_site->ss_server_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);
-
-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);
-}
-
-static 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;
-}
-
-/*
- * 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);
+LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD | LCT_DT_THREAD);
-static void seq_server_proc_fini(struct lu_server_seq *seq);
+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 CONFIG_PROC_FS
+ 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_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_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 /* !CONFIG_PROC_FS */
+ return 0;
+#endif /* CONFIG_PROC_FS */
}
static void seq_server_proc_fini(struct lu_server_seq *seq)
{
+#ifdef CONFIG_PROC_FS
ENTRY;
if (seq->lss_proc_dir != NULL) {
if (!IS_ERR(seq->lss_proc_dir))
seq->lss_proc_dir = NULL;
}
EXIT;
+#endif /* CONFIG_PROC_FS */
}
-#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;
- range_init(&seq->lss_space);
+ lu_seq_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;
+ 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);
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));
- }
+ 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)
}
EXPORT_SYMBOL(seq_server_fini);
-cfs_proc_dir_entry_t *seq_type_proc_dir = NULL;
-
-static int __init fid_mod_init(void)
+int seq_site_fini(const struct lu_env *env, struct seq_server_site *ss)
{
- 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;
+ if (ss == NULL)
+ RETURN(0);
+
+ if (ss->ss_server_seq) {
+ seq_server_fini(ss->ss_server_seq, env);
+ OBD_FREE_PTR(ss->ss_server_seq);
+ ss->ss_server_seq = NULL;
+ }
+
+ if (ss->ss_control_seq) {
+ seq_server_fini(ss->ss_control_seq, env);
+ OBD_FREE_PTR(ss->ss_control_seq);
+ ss->ss_control_seq = NULL;
+ }
+
+ if (ss->ss_client_seq) {
+ seq_client_fini(ss->ss_client_seq);
+ OBD_FREE_PTR(ss->ss_client_seq);
+ ss->ss_client_seq = NULL;
+ }
+
+ RETURN(0);
}
+EXPORT_SYMBOL(seq_site_fini);
-static void __exit fid_mod_exit(void)
+int fid_server_mod_init(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_INIT(&seq_thread_key);
+ return lu_context_key_register(&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
+void fid_server_mod_exit(void)
+{
+ lu_context_key_degister(&seq_thread_key);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff