-/* -*- 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.
* 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, 2012, Whamcloud, Inc.
*/
/*
* 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 <lustre_mdc.h>
#include "fid_internal.h"
-static int seq_client_rpc(struct lu_client_seq *seq, struct lu_range *input,
- struct lu_range *output, __u32 opc,
+static int seq_client_rpc(struct lu_client_seq *seq,
+ struct lu_seq_range *output, __u32 opc,
const char *opcname)
{
- struct obd_export *exp = seq->lcs_exp;
- struct ptlrpc_request *req;
- struct lu_range *out, *in;
- __u32 *op;
- int rc;
- ENTRY;
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY,
- LUSTRE_MDS_VERSION, SEQ_QUERY);
- if (req == NULL)
- RETURN(-ENOMEM);
-
- /* Init operation code */
- op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC);
- *op = opc;
-
- /* Zero out input range, this is not recovery yet. */
- in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE);
- if (input != NULL)
- *in = *input;
- else
- range_zero(in);
-
- ptlrpc_request_set_replen(req);
-
- if (seq->lcs_type == LUSTRE_SEQ_METADATA) {
- req->rq_request_portal = (opc == SEQ_ALLOC_SUPER) ?
- SEQ_CONTROLLER_PORTAL : SEQ_METADATA_PORTAL;
- } else {
- req->rq_request_portal = (opc == SEQ_ALLOC_SUPER) ?
- SEQ_CONTROLLER_PORTAL : SEQ_DATA_PORTAL;
- }
- ptlrpc_at_set_req_timeout(req);
-
- mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
- rc = ptlrpc_queue_wait(req);
- mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
-
- if (rc)
- GOTO(out_req, rc);
-
- out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE);
- *output = *out;
-
- if (!range_is_sane(output)) {
- CERROR("%s: Invalid range received from server: "
- DRANGE"\n", seq->lcs_name, PRANGE(output));
- GOTO(out_req, rc = -EINVAL);
- }
-
- if (range_is_exhausted(output)) {
- CERROR("%s: Range received from server is exhausted: "
- DRANGE"]\n", seq->lcs_name, PRANGE(output));
- GOTO(out_req, rc = -EINVAL);
- }
- *in = *out;
-
- CDEBUG(D_INFO, "%s: Allocated %s-sequence "DRANGE"]\n",
- seq->lcs_name, opcname, PRANGE(output));
-
- EXIT;
+ struct obd_export *exp = seq->lcs_exp;
+ struct ptlrpc_request *req;
+ struct lu_seq_range *out, *in;
+ __u32 *op;
+ unsigned int debug_mask;
+ int rc;
+ ENTRY;
+
+ req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_SEQ_QUERY,
+ LUSTRE_MDS_VERSION, SEQ_QUERY);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ /* Init operation code */
+ op = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_OPC);
+ *op = opc;
+
+ /* Zero out input range, this is not recovery yet. */
+ in = req_capsule_client_get(&req->rq_pill, &RMF_SEQ_RANGE);
+ range_init(in);
+
+ ptlrpc_request_set_replen(req);
+
+ if (seq->lcs_type == LUSTRE_SEQ_METADATA) {
+ req->rq_request_portal = SEQ_METADATA_PORTAL;
+ in->lsr_flags = LU_SEQ_RANGE_MDT;
+ } else {
+ LASSERTF(seq->lcs_type == LUSTRE_SEQ_DATA,
+ "unknown lcs_type %u\n", seq->lcs_type);
+ req->rq_request_portal = SEQ_DATA_PORTAL;
+ in->lsr_flags = LU_SEQ_RANGE_OST;
+ }
+
+ if (opc == SEQ_ALLOC_SUPER) {
+ /* Update index field of *in, it is required for
+ * FLD update on super sequence allocator node. */
+ in->lsr_index = seq->lcs_space.lsr_index;
+ req->rq_request_portal = SEQ_CONTROLLER_PORTAL;
+ debug_mask = D_CONSOLE;
+ } else {
+ debug_mask = D_INFO;
+ LASSERTF(opc == SEQ_ALLOC_META,
+ "unknown opcode %u\n, opc", opc);
+ }
+
+ ptlrpc_at_set_req_timeout(req);
+
+ mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
+ rc = ptlrpc_queue_wait(req);
+ mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
+
+ if (rc)
+ GOTO(out_req, rc);
+
+ out = req_capsule_server_get(&req->rq_pill, &RMF_SEQ_RANGE);
+ *output = *out;
+
+ if (!range_is_sane(output)) {
+ CERROR("%s: Invalid range received from server: "
+ DRANGE"\n", seq->lcs_name, PRANGE(output));
+ GOTO(out_req, rc = -EINVAL);
+ }
+
+ if (range_is_exhausted(output)) {
+ CERROR("%s: Range received from server is exhausted: "
+ DRANGE"]\n", seq->lcs_name, PRANGE(output));
+ GOTO(out_req, rc = -EINVAL);
+ }
+
+ CDEBUG_LIMIT(debug_mask, "%s: Allocated %s-sequence "DRANGE"]\n",
+ seq->lcs_name, opcname, PRANGE(output));
+
+ EXIT;
out_req:
- ptlrpc_req_finished(req);
- return rc;
+ ptlrpc_req_finished(req);
+ return rc;
}
/* Request sequence-controller node to allocate new super-sequence. */
-int seq_client_replay_super(struct lu_client_seq *seq,
- struct lu_range *range,
- const struct lu_env *env)
+int seq_client_alloc_super(struct lu_client_seq *seq,
+ const struct lu_env *env)
{
int rc;
ENTRY;
- down(&seq->lcs_sem);
+ cfs_mutex_lock(&seq->lcs_mutex);
#ifdef __KERNEL__
if (seq->lcs_srv) {
LASSERT(env != NULL);
- rc = seq_server_alloc_super(seq->lcs_srv, range,
- &seq->lcs_space, env);
+ rc = seq_server_alloc_super(seq->lcs_srv, &seq->lcs_space,
+ env);
} else {
#endif
- rc = seq_client_rpc(seq, range, &seq->lcs_space,
+ rc = seq_client_rpc(seq, &seq->lcs_space,
SEQ_ALLOC_SUPER, "super");
#ifdef __KERNEL__
}
#endif
- up(&seq->lcs_sem);
+ cfs_mutex_unlock(&seq->lcs_mutex);
RETURN(rc);
}
-/* Request sequence-controller node to allocate new super-sequence. */
-int seq_client_alloc_super(struct lu_client_seq *seq,
- const struct lu_env *env)
-{
- ENTRY;
- RETURN(seq_client_replay_super(seq, NULL, env));
-}
-
/* Request sequence-controller node to allocate new meta-sequence. */
-static int seq_client_alloc_meta(struct lu_client_seq *seq,
- const struct lu_env *env)
+static int seq_client_alloc_meta(const struct lu_env *env,
+ struct lu_client_seq *seq)
{
int rc;
ENTRY;
#ifdef __KERNEL__
if (seq->lcs_srv) {
LASSERT(env != NULL);
- rc = seq_server_alloc_meta(seq->lcs_srv, NULL,
- &seq->lcs_space, env);
+ rc = seq_server_alloc_meta(seq->lcs_srv, &seq->lcs_space, env);
} else {
#endif
- rc = seq_client_rpc(seq, NULL, &seq->lcs_space,
+ rc = seq_client_rpc(seq, &seq->lcs_space,
SEQ_ALLOC_META, "meta");
#ifdef __KERNEL__
}
}
/* Allocate new sequence for client. */
-static int seq_client_alloc_seq(struct lu_client_seq *seq, seqno_t *seqnr)
+static int seq_client_alloc_seq(const struct lu_env *env,
+ struct lu_client_seq *seq, seqno_t *seqnr)
{
int rc;
ENTRY;
LASSERT(range_is_sane(&seq->lcs_space));
if (range_is_exhausted(&seq->lcs_space)) {
- rc = seq_client_alloc_meta(seq, NULL);
+ rc = seq_client_alloc_meta(env, seq);
if (rc) {
- CERROR("%s: Can't allocate new meta-sequence, "
+ CERROR("%s: Can't allocate new meta-sequence,"
"rc %d\n", seq->lcs_name, rc);
RETURN(rc);
} else {
}
LASSERT(!range_is_exhausted(&seq->lcs_space));
- *seqnr = seq->lcs_space.lr_start;
- seq->lcs_space.lr_start += 1;
+ *seqnr = seq->lcs_space.lsr_start;
+ seq->lcs_space.lsr_start += 1;
CDEBUG(D_INFO, "%s: Allocated sequence ["LPX64"]\n", seq->lcs_name,
*seqnr);
RETURN(rc);
}
+static int seq_fid_alloc_prep(struct lu_client_seq *seq,
+ cfs_waitlink_t *link)
+{
+ if (seq->lcs_update) {
+ cfs_waitq_add(&seq->lcs_waitq, link);
+ cfs_set_current_state(CFS_TASK_UNINT);
+ cfs_mutex_unlock(&seq->lcs_mutex);
+
+ cfs_waitq_wait(link, CFS_TASK_UNINT);
+
+ cfs_mutex_lock(&seq->lcs_mutex);
+ cfs_waitq_del(&seq->lcs_waitq, link);
+ cfs_set_current_state(CFS_TASK_RUNNING);
+ return -EAGAIN;
+ }
+ ++seq->lcs_update;
+ cfs_mutex_unlock(&seq->lcs_mutex);
+ return 0;
+}
+
+static void seq_fid_alloc_fini(struct lu_client_seq *seq)
+{
+ LASSERT(seq->lcs_update == 1);
+ cfs_mutex_lock(&seq->lcs_mutex);
+ --seq->lcs_update;
+ cfs_waitq_signal(&seq->lcs_waitq);
+}
+
+/* Allocate the whole seq to the caller*/
+int seq_client_get_seq(const struct lu_env *env,
+ struct lu_client_seq *seq, seqno_t *seqnr)
+{
+ cfs_waitlink_t link;
+ int rc;
+
+ LASSERT(seqnr != NULL);
+ cfs_mutex_lock(&seq->lcs_mutex);
+ cfs_waitlink_init(&link);
+
+ while (1) {
+ rc = seq_fid_alloc_prep(seq, &link);
+ if (rc == 0)
+ break;
+ }
+
+ rc = seq_client_alloc_seq(env, seq, seqnr);
+ if (rc) {
+ CERROR("%s: Can't allocate new sequence, "
+ "rc %d\n", seq->lcs_name, rc);
+ seq_fid_alloc_fini(seq);
+ cfs_mutex_unlock(&seq->lcs_mutex);
+ return rc;
+ }
+
+ CDEBUG(D_INFO, "%s: allocate sequence "
+ "[0x%16.16"LPF64"x]\n", seq->lcs_name, *seqnr);
+
+ /*Since the caller require the whole seq,
+ *so marked this seq to be used*/
+ seq->lcs_fid.f_oid = LUSTRE_SEQ_MAX_WIDTH;
+ seq->lcs_fid.f_seq = *seqnr;
+ seq->lcs_fid.f_ver = 0;
+
+ /*
+ * Inform caller that sequence switch is performed to allow it
+ * to setup FLD for it.
+ */
+ seq_fid_alloc_fini(seq);
+ cfs_mutex_unlock(&seq->lcs_mutex);
+
+ return rc;
+}
+EXPORT_SYMBOL(seq_client_get_seq);
+
/* Allocate new fid on passed client @seq and save it to @fid. */
-int seq_client_alloc_fid(struct lu_client_seq *seq, struct lu_fid *fid)
+int seq_client_alloc_fid(const struct lu_env *env,
+ struct lu_client_seq *seq, struct lu_fid *fid)
{
+ cfs_waitlink_t link;
int rc;
ENTRY;
LASSERT(seq != NULL);
LASSERT(fid != NULL);
- down(&seq->lcs_sem);
+ cfs_waitlink_init(&link);
+ cfs_mutex_lock(&seq->lcs_mutex);
- if (fid_is_zero(&seq->lcs_fid) ||
- fid_oid(&seq->lcs_fid) >= seq->lcs_width)
- {
+ if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_EXHAUST))
+ seq->lcs_fid.f_oid = seq->lcs_width;
+
+ while (1) {
seqno_t seqnr;
- rc = seq_client_alloc_seq(seq, &seqnr);
+ if (!fid_is_zero(&seq->lcs_fid) &&
+ fid_oid(&seq->lcs_fid) < seq->lcs_width) {
+ /* Just bump last allocated fid and return to caller. */
+ seq->lcs_fid.f_oid += 1;
+ rc = 0;
+ break;
+ }
+
+ rc = seq_fid_alloc_prep(seq, &link);
+ if (rc)
+ continue;
+
+ rc = seq_client_alloc_seq(env, seq, &seqnr);
if (rc) {
CERROR("%s: Can't allocate new sequence, "
"rc %d\n", seq->lcs_name, rc);
- up(&seq->lcs_sem);
+ seq_fid_alloc_fini(seq);
+ cfs_mutex_unlock(&seq->lcs_mutex);
RETURN(rc);
}
* to setup FLD for it.
*/
rc = 1;
- } else {
- /* Just bump last allocated fid and return to caller. */
- seq->lcs_fid.f_oid += 1;
- rc = 0;
+
+ seq_fid_alloc_fini(seq);
+ break;
}
*fid = seq->lcs_fid;
- up(&seq->lcs_sem);
+ cfs_mutex_unlock(&seq->lcs_mutex);
CDEBUG(D_INFO, "%s: Allocated FID "DFID"\n", seq->lcs_name, PFID(fid));
RETURN(rc);
*/
void seq_client_flush(struct lu_client_seq *seq)
{
+ cfs_waitlink_t link;
+
LASSERT(seq != NULL);
- down(&seq->lcs_sem);
+ cfs_waitlink_init(&link);
+ cfs_mutex_lock(&seq->lcs_mutex);
+
+ while (seq->lcs_update) {
+ cfs_waitq_add(&seq->lcs_waitq, &link);
+ cfs_set_current_state(CFS_TASK_UNINT);
+ cfs_mutex_unlock(&seq->lcs_mutex);
+
+ cfs_waitq_wait(&link, CFS_TASK_UNINT);
+
+ cfs_mutex_lock(&seq->lcs_mutex);
+ cfs_waitq_del(&seq->lcs_waitq, &link);
+ cfs_set_current_state(CFS_TASK_RUNNING);
+ }
+
fid_zero(&seq->lcs_fid);
- range_zero(&seq->lcs_space);
- up(&seq->lcs_sem);
+ /**
+ * this id shld not be used for seq range allocation.
+ * set to -1 for dgb check.
+ */
+
+ seq->lcs_space.lsr_index = -1;
+
+ range_init(&seq->lcs_space);
+ cfs_mutex_unlock(&seq->lcs_mutex);
}
EXPORT_SYMBOL(seq_client_flush);
seq->lcs_exp = exp;
seq->lcs_srv = srv;
seq->lcs_type = type;
- sema_init(&seq->lcs_sem, 1);
+ cfs_mutex_init(&seq->lcs_mutex);
seq->lcs_width = LUSTRE_SEQ_MAX_WIDTH;
+ cfs_waitq_init(&seq->lcs_waitq);
/* Make sure that things are clear before work is started. */
seq_client_flush(seq);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff