-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#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__
/* 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;
* Ask client for new range, assign that range to ->seq_space and write
* seq state to backing store should be atomic.
*/
- cfs_down(&seq->lss_sem);
+ 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);
- seq->lss_cli = cli;
- cli->lcs_space.lsr_mdt = seq->lss_site->ms_node_id;
- EXIT;
+ seq->lss_cli = cli;
+ cli->lcs_space.lsr_index = seq->lss_site->ss_node_id;
+ EXIT;
out_up:
- cfs_up(&seq->lss_sem);
+ mutex_unlock(&seq->lss_mutex);
return rc;
}
EXPORT_SYMBOL(seq_server_set_cli);
+/*
+ * 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)
+{
+ 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;
+}
/**
* On controller node, allocate new super sequence for regular sequence server.
*/
static int __seq_server_alloc_super(struct lu_server_seq *seq,
- struct lu_seq_range *in,
struct lu_seq_range *out,
const struct lu_env *env)
{
- struct lu_seq_range *space = &seq->lss_space;
- struct thandle *th;
- __u64 mdt = out->lsr_mdt;
- int rc, credit;
- ENTRY;
-
- LASSERT(range_is_sane(space));
-
- if (in != NULL) {
- CDEBUG(D_INFO, "%s: Input seq range: "
- DRANGE"\n", seq->lss_name, PRANGE(in));
-
- if (in->lsr_end > space->lsr_start)
- space->lsr_start = in->lsr_end;
- *out = *in;
-
- CDEBUG(D_INFO, "%s: Recovered space: "DRANGE"\n",
- seq->lss_name, PRANGE(space));
- } else {
- if (range_space(space) < seq->lss_width) {
- CWARN("%s: Sequences space to be exhausted soon. "
- "Only "LPU64" sequences left\n", seq->lss_name,
- range_space(space));
- *out = *space;
- space->lsr_start = space->lsr_end;
- } else if (range_is_exhausted(space)) {
- CERROR("%s: Sequences space is exhausted\n",
- seq->lss_name);
- RETURN(-ENOSPC);
- } else {
- range_alloc(out, space, seq->lss_width);
- }
- }
- out->lsr_mdt = mdt;
-
- credit = SEQ_TXN_STORE_CREDITS + FLD_TXN_INDEX_INSERT_CREDITS;
-
- th = seq_store_trans_start(seq, env, credit);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- rc = seq_store_write(seq, env, th);
- if (rc) {
- CERROR("%s: Can't write space data, rc %d\n",
- seq->lss_name, rc);
- goto out;
- }
-
- rc = fld_server_create(seq->lss_site->ms_server_fld,
- env, out, th);
- if (rc) {
- CERROR("%s: Can't Update fld database, rc %d\n",
- seq->lss_name, rc);
- }
+ struct lu_seq_range *space = &seq->lss_space;
+ int rc;
+ ENTRY;
+
+ LASSERT(lu_seq_range_is_sane(space));
+
+ if (lu_seq_range_is_exhausted(space)) {
+ CERROR("%s: Sequences space is exhausted\n",
+ seq->lss_name);
+ RETURN(-ENOSPC);
+ } else {
+ range_alloc(out, space, seq->lss_width);
+ }
-out:
- seq_store_trans_stop(seq, env, th);
+ rc = seq_store_update(env, seq, out, 1 /* sync */);
- CDEBUG(D_INFO, "%s: super-sequence allocation rc = %d "
- DRANGE"\n", seq->lss_name, rc, PRANGE(out));
+ LCONSOLE_INFO("%s: super-sequence allocation rc = %d " DRANGE"\n",
+ seq->lss_name, rc, PRANGE(out));
- RETURN(rc);
+ RETURN(rc);
}
int seq_server_alloc_super(struct lu_server_seq *seq,
- struct lu_seq_range *in,
struct lu_seq_range *out,
const struct lu_env *env)
{
int rc;
ENTRY;
- cfs_down(&seq->lss_sem);
- rc = __seq_server_alloc_super(seq, in, out, env);
- cfs_up(&seq->lss_sem);
+ mutex_lock(&seq->lss_mutex);
+ rc = __seq_server_alloc_super(seq, out, env);
+ mutex_unlock(&seq->lss_mutex);
RETURN(rc);
}
-static int __seq_server_alloc_meta(struct lu_server_seq *seq,
- struct lu_seq_range *in,
- struct lu_seq_range *out,
- const struct lu_env *env)
+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)
{
struct lu_seq_range *space = &seq->lss_space;
- struct thandle *th;
- int rc = 0;
+ int rc;
- ENTRY;
+ range_alloc(&seq->lss_lowater_set, space, seq->lss_set_width);
+ range_alloc(&seq->lss_hiwater_set, space, seq->lss_set_width);
- LASSERT(range_is_sane(space));
+ rc = seq_store_update(env, seq, NULL, 1);
- /*
- * This is recovery case. Adjust super range if input range looks like
- * it is allocated from new super.
- */
- if (in != NULL) {
- CDEBUG(D_INFO, "%s: Input seq range: "
- DRANGE"\n", seq->lss_name, PRANGE(in));
-
- if (in->lsr_end <= space->lsr_start) {
- /*
- * Client is replaying a fairly old range, server
- * don't need to do any allocation.
- */
- } else if (range_is_exhausted(space)) {
- /*
- * Start is set to end of last allocated, because it
- * *is* already allocated so we take that into account
- * and do not use for other allocations.
- */
- space->lsr_start = in->lsr_end;
-
- /*
- * End is set to in->lsr_start + super sequence
- * allocation unit. That is because in->lsr_start is
- * first seq in new allocated range from controller
- * before failure.
- */
- space->lsr_end = in->lsr_start + LUSTRE_SEQ_SUPER_WIDTH;
-
- if (!seq->lss_cli) {
- CERROR("%s: No sequence controller "
- "is attached.\n", seq->lss_name);
- RETURN(-ENODEV);
- }
-
- /*
- * Let controller know that this is recovery and last
- * obtained range from it was @space.
- */
- rc = seq_client_replay_super(seq->lss_cli, space, env);
-
- if (rc) {
- CERROR("%s: Can't replay super-sequence, "
- "rc %d\n", seq->lss_name, rc);
- RETURN(rc);
- }
- } else {
- /*
- * Update super start by end from client's range. Super
- * end should not be changed if range was not exhausted.
- */
- space->lsr_start = in->lsr_end;
- }
+ return rc;
+}
- /* sending replay_super to update fld as only super sequence
- * server can update fld.
- * we are sending meta sequence to fld rather than super
- * sequence, but fld server can handle range merging. */
+/*
+ * This function implements new seq allocation algorithm using async
+ * updates to seq file on disk. ref bug 18857 for details.
+ * there are four variable to keep track of this process
+ *
+ * lss_space; - available lss_space
+ * lss_lowater_set; - lu_seq_range for all seqs before barrier, i.e. safe to use
+ * lss_hiwater_set; - lu_seq_range after barrier, i.e. allocated but may be
+ * not yet committed
+ *
+ * when lss_lowater_set reaches the end it is replaced with hiwater one and
+ * a write operation is initiated to allocate new hiwater range.
+ * if last seq write opearion is still not committed, current operation is
+ * 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 *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 (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 (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;
+
+ /* 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);
+
+ /* update ondisk seq with new *space */
+ rc = seq_store_update(env, seq, NULL, seq->lss_need_sync);
+ }
- in->lsr_mdt = space->lsr_mdt;
- rc = seq_client_replay_super(seq->lss_cli, in, env);
+ LASSERTF(!lu_seq_range_is_exhausted(loset) ||
+ lu_seq_range_is_sane(loset),
+ DRANGE"\n", PRANGE(loset));
- if (rc) {
- CERROR("%s: Can't replay super-sequence, "
- "rc %d\n", seq->lss_name, rc);
- RETURN(rc);
- }
+ if (rc == 0)
+ range_alloc(out, loset, seq->lss_width);
- *out = *in;
-
- CDEBUG(D_INFO, "%s: Recovered space: "DRANGE"\n",
- seq->lss_name, PRANGE(space));
- } else {
- /*
- * XXX: Avoid cascading RPCs using kind of async preallocation
- * when meta-sequence is close to exhausting.
- */
- if (range_is_exhausted(space)) {
- if (!seq->lss_cli) {
- CERROR("%s: No sequence controller "
- "is attached.\n", seq->lss_name);
- RETURN(-ENODEV);
- }
-
- 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);
- RETURN(rc);
- }
-
- /* Saving new range to allocation space. */
- *space = seq->lss_cli->lcs_space;
- LASSERT(range_is_sane(space));
- }
+ RETURN(rc);
+}
- range_alloc(out, space, seq->lss_width);
- }
+/**
+ * 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;
+
+ /* Check if available space ends and allocate new super seq */
+ if (lu_seq_range_is_exhausted(space)) {
+ if (!seq->lss_cli) {
+ CERROR("%s: No sequence controller is attached.\n",
+ seq->lss_name);
+ RETURN(-ENODEV);
+ }
+
+ rc = seq_client_alloc_super(seq->lss_cli, env);
+ if (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(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);
+ }
+ }
- th = seq_store_trans_start(seq, env, SEQ_TXN_STORE_CREDITS);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
+ if (lu_seq_range_is_zero(&seq->lss_lowater_set))
+ __seq_set_init(env, seq);
- rc = seq_store_write(seq, env, th);
- if (rc) {
- CERROR("%s: Can't write space data, rc %d\n",
- seq->lss_name, rc);
- }
+ RETURN(rc);
+}
+EXPORT_SYMBOL(seq_server_check_and_alloc_super);
- if (rc == 0) {
- CDEBUG(D_INFO, "%s: Allocated meta-sequence "
- DRANGE"\n", seq->lss_name, PRANGE(out));
- }
+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) {
+ if (rc == -EINPROGRESS) {
+ static int printed;
+
+ if (printed++ % 8 == 0)
+ LCONSOLE_INFO("%s: Waiting to contact MDT0000 "
+ "to allocate super-sequence\n",
+ seq->lss_name);
+ } else {
+ CERROR("%s: Allocated super-sequence failed: rc = %d\n",
+ seq->lss_name, rc);
+ }
+ RETURN(rc);
+ }
- seq_store_trans_stop(seq, env, th);
- RETURN(rc);
+ rc = range_alloc_set(env, out, seq);
+ if (rc != 0) {
+ CERROR("%s: Allocated meta-sequence failed: rc = %d\n",
+ seq->lss_name, rc);
+ RETURN(rc);
+ }
+
+ CDEBUG(D_INFO, "%s: Allocated meta-sequence " DRANGE"\n",
+ seq->lss_name, PRANGE(out));
+
+ RETURN(rc);
}
int seq_server_alloc_meta(struct lu_server_seq *seq,
- struct lu_seq_range *in,
struct lu_seq_range *out,
const struct lu_env *env)
{
int rc;
ENTRY;
- cfs_down(&seq->lss_sem);
- rc = __seq_server_alloc_meta(seq, in, out, env);
- cfs_up(&seq->lss_sem);
+ mutex_lock(&seq->lss_mutex);
+ rc = __seq_server_alloc_meta(seq, out, env);
+ mutex_unlock(&seq->lss_mutex);
RETURN(rc);
}
static int seq_server_handle(struct lu_site *site,
const struct lu_env *env,
- __u32 opc, struct lu_seq_range *in,
- struct lu_seq_range *out)
+ __u32 opc, struct lu_seq_range *out)
{
- int rc;
- struct md_site *mite;
- ENTRY;
-
- mite = lu_site2md(site);
- switch (opc) {
- case SEQ_ALLOC_META:
- if (!mite->ms_server_seq) {
- CERROR("Sequence server is not "
- "initialized\n");
- RETURN(-EINVAL);
- }
- rc = seq_server_alloc_meta(mite->ms_server_seq,
- in, out, env);
- break;
- case SEQ_ALLOC_SUPER:
- if (!mite->ms_control_seq) {
- CERROR("Sequence controller is not "
- "initialized\n");
- RETURN(-EINVAL);
- }
- rc = seq_server_alloc_super(mite->ms_control_seq,
- in, out, env);
- break;
- default:
- rc = -EINVAL;
- break;
- }
+ int rc;
+ struct seq_server_site *ss_site;
+ struct dt_device *dev;
+ ENTRY;
+
+ ss_site = lu_site2seq(site);
+
+ switch (opc) {
+ case SEQ_ALLOC_META:
+ if (!ss_site->ss_server_seq) {
+ CERROR("Sequence server is not "
+ "initialized\n");
+ RETURN(-EINVAL);
+ }
+
+ dev = lu2dt_dev(ss_site->ss_server_seq->lss_obj->do_lu.lo_dev);
+ if (dev->dd_rdonly)
+ RETURN(-EROFS);
+
+ rc = seq_server_alloc_meta(ss_site->ss_server_seq, out, env);
+ break;
+ case SEQ_ALLOC_SUPER:
+ if (!ss_site->ss_control_seq) {
+ CERROR("Sequence controller is not "
+ "initialized\n");
+ RETURN(-EINVAL);
+ }
+
+ dev = lu2dt_dev(ss_site->ss_control_seq->lss_obj->do_lu.lo_dev);
+ if (dev->dd_rdonly)
+ RETURN(-EROFS);
+
+ rc = seq_server_alloc_super(ss_site->ss_control_seq, out, env);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
- RETURN(rc);
+ 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, *in = NULL, *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;
- site = req->rq_export->exp_obd->obd_lu_dev->ld_site;
- LASSERT(site != NULL);
-
- rc = req_capsule_server_pack(info->sti_pill);
- if (rc)
- RETURN(err_serious(rc));
+ ENTRY;
- 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));
+ 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);
- tmp = req_capsule_client_get(info->sti_pill, &RMF_SEQ_RANGE);
+ 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));
- if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
- in = tmp;
+ tmp = req_capsule_client_get(tsi->tsi_pill, &RMF_SEQ_RANGE);
- if (range_is_zero(in) || !range_is_sane(in)) {
- CERROR("Replayed seq range is invalid: "
- DRANGE"\n", PRANGE(in));
- RETURN(err_serious(-EINVAL));
- }
- }
- /* 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_mdt = tmp->lsr_mdt;
- rc = seq_server_handle(site, env, *opc, in, 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(HAS_REPLY, 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);
+LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD | LCT_DT_THREAD);
- 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);
- seq_thread_info_fini(info);
-
- return rc;
-}
-
-/*
- * Entry point for handling FLD RPCs called from MDT.
- */
-int seq_query(struct com_thread_info *info)
+static void seq_server_debugfs_fini(struct lu_server_seq *seq)
{
- return seq_handle(info->cti_pill->rc_req);
+ if (!IS_ERR_OR_NULL(seq->lss_debugfs_entry))
+ ldebugfs_remove(&seq->lss_debugfs_entry);
}
-EXPORT_SYMBOL(seq_query);
-
-static void seq_server_proc_fini(struct lu_server_seq *seq);
-#ifdef LPROCFS
-static int seq_server_proc_init(struct lu_server_seq *seq)
+static int seq_server_debugfs_init(struct lu_server_seq *seq)
{
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
+
+ seq->lss_debugfs_entry = ldebugfs_register(seq->lss_name,
+ seq_debugfs_dir,
+ NULL, NULL);
+ if (IS_ERR_OR_NULL(seq->lss_debugfs_entry)) {
+ rc = seq->lss_debugfs_entry ? PTR_ERR(seq->lss_debugfs_entry)
+ : -ENOMEM;
+ seq->lss_debugfs_entry = NULL;
+ 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 = ldebugfs_add_vars(seq->lss_debugfs_entry,
+ seq_server_debugfs_list, seq);
+ if (rc) {
+ CERROR("%s: Can't init sequence manager debugfs, 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);
- }
+ if (seq->lss_type == LUSTRE_SEQ_CONTROLLER) {
+ rc = ldebugfs_seq_create(seq->lss_debugfs_entry, "fldb", 0644,
+ &seq_fld_debugfs_seq_fops, seq);
+ if (rc) {
+ CERROR("%s: Can't create fldb for sequence manager debugfs: rc = %d\n",
+ seq->lss_name, rc);
+ GOTO(out_cleanup, rc);
+ }
+ }
- RETURN(0);
+ RETURN(0);
out_cleanup:
- seq_server_proc_fini(seq);
- return rc;
-}
-
-static void seq_server_proc_fini(struct lu_server_seq *seq)
-{
- ENTRY;
- if (seq->lss_proc_dir != NULL) {
- if (!IS_ERR(seq->lss_proc_dir))
- lprocfs_remove(&seq->lss_proc_dir);
- seq->lss_proc_dir = NULL;
- }
- EXIT;
-}
-#else
-static int seq_server_proc_init(struct lu_server_seq *seq)
-{
- return 0;
+ seq_server_debugfs_fini(seq);
+ return rc;
}
-static void seq_server_proc_fini(struct lu_server_seq *seq)
-{
- return;
-}
-#endif
-
-int seq_server_init(struct lu_server_seq *seq,
- struct dt_device *dev,
- const char *prefix,
- enum lu_mgr_type type,
- struct md_site *ms,
- const struct lu_env *env)
+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)
{
- struct thandle *th;
- 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(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 = ms;
- range_init(&seq->lss_space);
- cfs_sema_init(&seq->lss_sem, 1);
+ 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;
LUSTRE_SEQ_ZERO_RANGE:
LUSTRE_SEQ_SPACE_RANGE;
- seq->lss_space.lsr_mdt = ms->ms_node_id;
- CDEBUG(D_INFO, "%s: No data found "
- "on store. Initialize space\n",
- seq->lss_name);
-
- th = seq_store_trans_start(seq, env, SEQ_TXN_STORE_CREDITS);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
+ seq->lss_space.lsr_index = ss->ss_node_id;
+ LCONSOLE_INFO("%s: No data found "
+ "on store. Initialize space\n",
+ seq->lss_name);
- /* Save default controller value to store. */
- rc = seq_store_write(seq, env, th);
+ rc = seq_store_update(env, seq, NULL, 0);
if (rc) {
CERROR("%s: Can't write space data, "
"rc %d\n", seq->lss_name, rc);
}
- seq_store_trans_stop(seq, env, th);
} 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));
+ CERROR("%s: Can't read space data, rc %d\n",
+ seq->lss_name, rc);
+ GOTO(out, rc);
}
- rc = seq_server_proc_init(seq);
+ 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_debugfs_init(seq);
if (rc)
- GOTO(out, rc);
+ GOTO(out, rc);
- EXIT;
+ EXIT;
out:
- if (rc)
- seq_server_fini(seq, env);
- return rc;
+ if (rc)
+ seq_server_fini(seq, env);
+ return rc;
}
EXPORT_SYMBOL(seq_server_init);
{
ENTRY;
- seq_server_proc_fini(seq);
+ seq_server_debugfs_fini(seq);
seq_store_fini(seq, env);
EXIT;
}
EXPORT_SYMBOL(seq_server_fini);
-cfs_proc_dir_entry_t *seq_type_proc_dir = NULL;
+int seq_site_fini(const struct lu_env *env, struct seq_server_site *ss)
+{
+ if (ss == NULL)
+ RETURN(0);
-static struct lu_local_obj_desc llod_seq_srv = {
- .llod_name = LUSTRE_SEQ_SRV_NAME,
- .llod_oid = FID_SEQ_SRV_OID,
- .llod_is_index = 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;
+ }
-static struct lu_local_obj_desc llod_seq_ctl = {
- .llod_name = LUSTRE_SEQ_CTL_NAME,
- .llod_oid = FID_SEQ_CTL_OID,
- .llod_is_index = 0,
-};
+ 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;
+ }
-static int __init fid_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);
-
- llo_local_obj_register(&llod_seq_srv);
- llo_local_obj_register(&llod_seq_ctl);
-
- LU_CONTEXT_KEY_INIT(&seq_thread_key);
- lu_context_key_register(&seq_thread_key);
- return 0;
+ 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)
{
- llo_local_obj_unregister(&llod_seq_srv);
- llo_local_obj_unregister(&llod_seq_ctl);
-
- 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