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-rw-r--r--fs/dlm/config.c130
-rw-r--r--fs/dlm/config.h17
-rw-r--r--fs/dlm/dlm_internal.h21
-rw-r--r--fs/dlm/lockspace.c43
-rw-r--r--fs/dlm/member.c197
-rw-r--r--fs/dlm/member.h3
-rw-r--r--fs/dlm/recoverd.c10
-rw-r--r--fs/dlm/user.c5
-rw-r--r--fs/gfs2/lock_dlm.c4
-rw-r--r--fs/ocfs2/stack_user.c4
-rw-r--r--include/linux/dlm.h71
11 files changed, 333 insertions, 172 deletions
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index 6cf72fcc0d0..e7e327d43fa 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -17,6 +17,7 @@
#include <linux/slab.h>
#include <linux/in.h>
#include <linux/in6.h>
+#include <linux/dlmconstants.h>
#include <net/ipv6.h>
#include <net/sock.h>
@@ -36,6 +37,7 @@
static struct config_group *space_list;
static struct config_group *comm_list;
static struct dlm_comm *local_comm;
+static uint32_t dlm_comm_count;
struct dlm_clusters;
struct dlm_cluster;
@@ -103,6 +105,8 @@ struct dlm_cluster {
unsigned int cl_timewarn_cs;
unsigned int cl_waitwarn_us;
unsigned int cl_new_rsb_count;
+ unsigned int cl_recover_callbacks;
+ char cl_cluster_name[DLM_LOCKSPACE_LEN];
};
enum {
@@ -118,6 +122,8 @@ enum {
CLUSTER_ATTR_TIMEWARN_CS,
CLUSTER_ATTR_WAITWARN_US,
CLUSTER_ATTR_NEW_RSB_COUNT,
+ CLUSTER_ATTR_RECOVER_CALLBACKS,
+ CLUSTER_ATTR_CLUSTER_NAME,
};
struct cluster_attribute {
@@ -126,6 +132,27 @@ struct cluster_attribute {
ssize_t (*store)(struct dlm_cluster *, const char *, size_t);
};
+static ssize_t cluster_cluster_name_read(struct dlm_cluster *cl, char *buf)
+{
+ return sprintf(buf, "%s\n", cl->cl_cluster_name);
+}
+
+static ssize_t cluster_cluster_name_write(struct dlm_cluster *cl,
+ const char *buf, size_t len)
+{
+ strncpy(dlm_config.ci_cluster_name, buf, DLM_LOCKSPACE_LEN);
+ strncpy(cl->cl_cluster_name, buf, DLM_LOCKSPACE_LEN);
+ return len;
+}
+
+static struct cluster_attribute cluster_attr_cluster_name = {
+ .attr = { .ca_owner = THIS_MODULE,
+ .ca_name = "cluster_name",
+ .ca_mode = S_IRUGO | S_IWUSR },
+ .show = cluster_cluster_name_read,
+ .store = cluster_cluster_name_write,
+};
+
static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
int *info_field, int check_zero,
const char *buf, size_t len)
@@ -171,6 +198,7 @@ CLUSTER_ATTR(protocol, 0);
CLUSTER_ATTR(timewarn_cs, 1);
CLUSTER_ATTR(waitwarn_us, 0);
CLUSTER_ATTR(new_rsb_count, 0);
+CLUSTER_ATTR(recover_callbacks, 0);
static struct configfs_attribute *cluster_attrs[] = {
[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
@@ -185,6 +213,8 @@ static struct configfs_attribute *cluster_attrs[] = {
[CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs.attr,
[CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us.attr,
[CLUSTER_ATTR_NEW_RSB_COUNT] = &cluster_attr_new_rsb_count.attr,
+ [CLUSTER_ATTR_RECOVER_CALLBACKS] = &cluster_attr_recover_callbacks.attr,
+ [CLUSTER_ATTR_CLUSTER_NAME] = &cluster_attr_cluster_name.attr,
NULL,
};
@@ -293,6 +323,7 @@ struct dlm_comms {
struct dlm_comm {
struct config_item item;
+ int seq;
int nodeid;
int local;
int addr_count;
@@ -309,6 +340,7 @@ struct dlm_node {
int nodeid;
int weight;
int new;
+ int comm_seq; /* copy of cm->seq when nd->nodeid is set */
};
static struct configfs_group_operations clusters_ops = {
@@ -455,6 +487,9 @@ static struct config_group *make_cluster(struct config_group *g,
cl->cl_timewarn_cs = dlm_config.ci_timewarn_cs;
cl->cl_waitwarn_us = dlm_config.ci_waitwarn_us;
cl->cl_new_rsb_count = dlm_config.ci_new_rsb_count;
+ cl->cl_recover_callbacks = dlm_config.ci_recover_callbacks;
+ memcpy(cl->cl_cluster_name, dlm_config.ci_cluster_name,
+ DLM_LOCKSPACE_LEN);
space_list = &sps->ss_group;
comm_list = &cms->cs_group;
@@ -558,6 +593,11 @@ static struct config_item *make_comm(struct config_group *g, const char *name)
return ERR_PTR(-ENOMEM);
config_item_init_type_name(&cm->item, name, &comm_type);
+
+ cm->seq = dlm_comm_count++;
+ if (!cm->seq)
+ cm->seq = dlm_comm_count++;
+
cm->nodeid = -1;
cm->local = 0;
cm->addr_count = 0;
@@ -801,7 +841,10 @@ static ssize_t node_nodeid_read(struct dlm_node *nd, char *buf)
static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf,
size_t len)
{
+ uint32_t seq = 0;
nd->nodeid = simple_strtol(buf, NULL, 0);
+ dlm_comm_seq(nd->nodeid, &seq);
+ nd->comm_seq = seq;
return len;
}
@@ -908,13 +951,13 @@ static void put_comm(struct dlm_comm *cm)
}
/* caller must free mem */
-int dlm_nodeid_list(char *lsname, int **ids_out, int *ids_count_out,
- int **new_out, int *new_count_out)
+int dlm_config_nodes(char *lsname, struct dlm_config_node **nodes_out,
+ int *count_out)
{
struct dlm_space *sp;
struct dlm_node *nd;
- int i = 0, rv = 0, ids_count = 0, new_count = 0;
- int *ids, *new;
+ struct dlm_config_node *nodes, *node;
+ int rv, count;
sp = get_space(lsname);
if (!sp)
@@ -927,73 +970,42 @@ int dlm_nodeid_list(char *lsname, int **ids_out, int *ids_count_out,
goto out;
}
- ids_count = sp->members_count;
+ count = sp->members_count;
- ids = kcalloc(ids_count, sizeof(int), GFP_NOFS);
- if (!ids) {
+ nodes = kcalloc(count, sizeof(struct dlm_config_node), GFP_NOFS);
+ if (!nodes) {
rv = -ENOMEM;
goto out;
}
+ node = nodes;
list_for_each_entry(nd, &sp->members, list) {
- ids[i++] = nd->nodeid;
- if (nd->new)
- new_count++;
- }
-
- if (ids_count != i)
- printk(KERN_ERR "dlm: bad nodeid count %d %d\n", ids_count, i);
-
- if (!new_count)
- goto out_ids;
+ node->nodeid = nd->nodeid;
+ node->weight = nd->weight;
+ node->new = nd->new;
+ node->comm_seq = nd->comm_seq;
+ node++;
- new = kcalloc(new_count, sizeof(int), GFP_NOFS);
- if (!new) {
- kfree(ids);
- rv = -ENOMEM;
- goto out;
+ nd->new = 0;
}
- i = 0;
- list_for_each_entry(nd, &sp->members, list) {
- if (nd->new) {
- new[i++] = nd->nodeid;
- nd->new = 0;
- }
- }
- *new_count_out = new_count;
- *new_out = new;
-
- out_ids:
- *ids_count_out = ids_count;
- *ids_out = ids;
+ *count_out = count;
+ *nodes_out = nodes;
+ rv = 0;
out:
mutex_unlock(&sp->members_lock);
put_space(sp);
return rv;
}
-int dlm_node_weight(char *lsname, int nodeid)
+int dlm_comm_seq(int nodeid, uint32_t *seq)
{
- struct dlm_space *sp;
- struct dlm_node *nd;
- int w = -EEXIST;
-
- sp = get_space(lsname);
- if (!sp)
- goto out;
-
- mutex_lock(&sp->members_lock);
- list_for_each_entry(nd, &sp->members, list) {
- if (nd->nodeid != nodeid)
- continue;
- w = nd->weight;
- break;
- }
- mutex_unlock(&sp->members_lock);
- put_space(sp);
- out:
- return w;
+ struct dlm_comm *cm = get_comm(nodeid, NULL);
+ if (!cm)
+ return -EEXIST;
+ *seq = cm->seq;
+ put_comm(cm);
+ return 0;
}
int dlm_nodeid_to_addr(int nodeid, struct sockaddr_storage *addr)
@@ -1047,6 +1059,8 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
#define DEFAULT_TIMEWARN_CS 500 /* 5 sec = 500 centiseconds */
#define DEFAULT_WAITWARN_US 0
#define DEFAULT_NEW_RSB_COUNT 128
+#define DEFAULT_RECOVER_CALLBACKS 0
+#define DEFAULT_CLUSTER_NAME ""
struct dlm_config_info dlm_config = {
.ci_tcp_port = DEFAULT_TCP_PORT,
@@ -1060,6 +1074,8 @@ struct dlm_config_info dlm_config = {
.ci_protocol = DEFAULT_PROTOCOL,
.ci_timewarn_cs = DEFAULT_TIMEWARN_CS,
.ci_waitwarn_us = DEFAULT_WAITWARN_US,
- .ci_new_rsb_count = DEFAULT_NEW_RSB_COUNT
+ .ci_new_rsb_count = DEFAULT_NEW_RSB_COUNT,
+ .ci_recover_callbacks = DEFAULT_RECOVER_CALLBACKS,
+ .ci_cluster_name = DEFAULT_CLUSTER_NAME
};
diff --git a/fs/dlm/config.h b/fs/dlm/config.h
index 3099d0dd26c..9f5e3663bb0 100644
--- a/fs/dlm/config.h
+++ b/fs/dlm/config.h
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -14,6 +14,13 @@
#ifndef __CONFIG_DOT_H__
#define __CONFIG_DOT_H__
+struct dlm_config_node {
+ int nodeid;
+ int weight;
+ int new;
+ uint32_t comm_seq;
+};
+
#define DLM_MAX_ADDR_COUNT 3
struct dlm_config_info {
@@ -29,15 +36,17 @@ struct dlm_config_info {
int ci_timewarn_cs;
int ci_waitwarn_us;
int ci_new_rsb_count;
+ int ci_recover_callbacks;
+ char ci_cluster_name[DLM_LOCKSPACE_LEN];
};
extern struct dlm_config_info dlm_config;
int dlm_config_init(void);
void dlm_config_exit(void);
-int dlm_node_weight(char *lsname, int nodeid);
-int dlm_nodeid_list(char *lsname, int **ids_out, int *ids_count_out,
- int **new_out, int *new_count_out);
+int dlm_config_nodes(char *lsname, struct dlm_config_node **nodes_out,
+ int *count_out);
+int dlm_comm_seq(int nodeid, uint32_t *seq);
int dlm_nodeid_to_addr(int nodeid, struct sockaddr_storage *addr);
int dlm_addr_to_nodeid(struct sockaddr_storage *addr, int *nodeid);
int dlm_our_nodeid(void);
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index f4d132c7690..3a564d197e9 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -119,28 +119,18 @@ struct dlm_member {
int weight;
int slot;
int slot_prev;
+ int comm_seq;
uint32_t generation;
};
/*
- * low nodeid saves array of these in ls_slots
- */
-
-struct dlm_slot {
- int nodeid;
- int slot;
-};
-
-/*
* Save and manage recovery state for a lockspace.
*/
struct dlm_recover {
struct list_head list;
- int *nodeids; /* nodeids of all members */
- int node_count;
- int *new; /* nodeids of new members */
- int new_count;
+ struct dlm_config_node *nodes;
+ int nodes_count;
uint64_t seq;
};
@@ -584,6 +574,9 @@ struct dlm_ls {
struct list_head ls_root_list; /* root resources */
struct rw_semaphore ls_root_sem; /* protect root_list */
+ const struct dlm_lockspace_ops *ls_ops;
+ void *ls_ops_arg;
+
int ls_namelen;
char ls_name[1];
};
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 1441f04bfab..a1ea25face8 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -386,12 +386,15 @@ static void threads_stop(void)
dlm_lowcomms_stop();
}
-static int new_lockspace(const char *name, int namelen, void **lockspace,
- uint32_t flags, int lvblen)
+static int new_lockspace(const char *name, const char *cluster,
+ uint32_t flags, int lvblen,
+ const struct dlm_lockspace_ops *ops, void *ops_arg,
+ int *ops_result, dlm_lockspace_t **lockspace)
{
struct dlm_ls *ls;
int i, size, error;
int do_unreg = 0;
+ int namelen = strlen(name);
if (namelen > DLM_LOCKSPACE_LEN)
return -EINVAL;
@@ -403,8 +406,24 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
return -EINVAL;
if (!dlm_user_daemon_available()) {
- module_put(THIS_MODULE);
- return -EUNATCH;
+ log_print("dlm user daemon not available");
+ error = -EUNATCH;
+ goto out;
+ }
+
+ if (ops && ops_result) {
+ if (!dlm_config.ci_recover_callbacks)
+ *ops_result = -EOPNOTSUPP;
+ else
+ *ops_result = 0;
+ }
+
+ if (dlm_config.ci_recover_callbacks && cluster &&
+ strncmp(cluster, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN)) {
+ log_print("dlm cluster name %s mismatch %s",
+ dlm_config.ci_cluster_name, cluster);
+ error = -EBADR;
+ goto out;
}
error = 0;
@@ -442,6 +461,11 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
ls->ls_flags = 0;
ls->ls_scan_time = jiffies;
+ if (ops && dlm_config.ci_recover_callbacks) {
+ ls->ls_ops = ops;
+ ls->ls_ops_arg = ops_arg;
+ }
+
if (flags & DLM_LSFL_TIMEWARN)
set_bit(LSFL_TIMEWARN, &ls->ls_flags);
@@ -619,8 +643,10 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
return error;
}
-int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
- uint32_t flags, int lvblen)
+int dlm_new_lockspace(const char *name, const char *cluster,
+ uint32_t flags, int lvblen,
+ const struct dlm_lockspace_ops *ops, void *ops_arg,
+ int *ops_result, dlm_lockspace_t **lockspace)
{
int error = 0;
@@ -630,7 +656,8 @@ int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
if (error)
goto out;
- error = new_lockspace(name, namelen, lockspace, flags, lvblen);
+ error = new_lockspace(name, cluster, flags, lvblen, ops, ops_arg,
+ ops_result, lockspace);
if (!error)
ls_count++;
if (error > 0)
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index eebc52aae82..862640a36d5 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2009 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -27,7 +27,7 @@ int dlm_slots_version(struct dlm_header *h)
}
void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc,
- struct dlm_member *memb)
+ struct dlm_member *memb)
{
struct rcom_config *rf = (struct rcom_config *)rc->rc_buf;
@@ -317,59 +317,51 @@ static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
}
}
-static int dlm_add_member(struct dlm_ls *ls, int nodeid)
+static int dlm_add_member(struct dlm_ls *ls, struct dlm_config_node *node)
{
struct dlm_member *memb;
- int w, error;
+ int error;
memb = kzalloc(sizeof(struct dlm_member), GFP_NOFS);
if (!memb)
return -ENOMEM;
- w = dlm_node_weight(ls->ls_name, nodeid);
- if (w < 0) {
- kfree(memb);
- return w;
- }
-
- error = dlm_lowcomms_connect_node(nodeid);
+ error = dlm_lowcomms_connect_node(node->nodeid);
if (error < 0) {
kfree(memb);
return error;
}
- memb->nodeid = nodeid;
- memb->weight = w;
+ memb->nodeid = node->nodeid;
+ memb->weight = node->weight;
+ memb->comm_seq = node->comm_seq;
add_ordered_member(ls, memb);
ls->ls_num_nodes++;
return 0;
}
-static void dlm_remove_member(struct dlm_ls *ls, struct dlm_member *memb)
-{
- list_move(&memb->list, &ls->ls_nodes_gone);
- ls->ls_num_nodes--;
-}
-
-int dlm_is_member(struct dlm_ls *ls, int nodeid)
+static struct dlm_member *find_memb(struct list_head *head, int nodeid)
{
struct dlm_member *memb;
- list_for_each_entry(memb, &ls->ls_nodes, list) {
+ list_for_each_entry(memb, head, list) {
if (memb->nodeid == nodeid)
- return 1;
+ return memb;
}
+ return NULL;
+}
+
+int dlm_is_member(struct dlm_ls *ls, int nodeid)
+{
+ if (find_memb(&ls->ls_nodes, nodeid))
+ return 1;
return 0;
}
int dlm_is_removed(struct dlm_ls *ls, int nodeid)
{
- struct dlm_member *memb;
-
- list_for_each_entry(memb, &ls->ls_nodes_gone, list) {
- if (memb->nodeid == nodeid)
- return 1;
- }
+ if (find_memb(&ls->ls_nodes_gone, nodeid))
+ return 1;
return 0;
}
@@ -460,10 +452,88 @@ static int ping_members(struct dlm_ls *ls)
return error;
}
+static void dlm_lsop_recover_prep(struct dlm_ls *ls)
+{
+ if (!ls->ls_ops || !ls->ls_ops->recover_prep)
+ return;
+ ls->ls_ops->recover_prep(ls->ls_ops_arg);
+}
+
+static void dlm_lsop_recover_slot(struct dlm_ls *ls, struct dlm_member *memb)
+{
+ struct dlm_slot slot;
+ uint32_t seq;
+ int error;
+
+ if (!ls->ls_ops || !ls->ls_ops->recover_slot)
+ return;
+
+ /* if there is no comms connection with this node
+ or the present comms connection is newer
+ than the one when this member was added, then
+ we consider the node to have failed (versus
+ being removed due to dlm_release_lockspace) */
+
+ error = dlm_comm_seq(memb->nodeid, &seq);
+
+ if (!error && seq == memb->comm_seq)
+ return;
+
+ slot.nodeid = memb->nodeid;
+ slot.slot = memb->slot;
+
+ ls->ls_ops->recover_slot(ls->ls_ops_arg, &slot);
+}
+
+void dlm_lsop_recover_done(struct dlm_ls *ls)
+{
+ struct dlm_member *memb;
+ struct dlm_slot *slots;
+ int i, num;
+
+ if (!ls->ls_ops || !ls->ls_ops->recover_done)
+ return;
+
+ num = ls->ls_num_nodes;
+
+ slots = kzalloc(num * sizeof(struct dlm_slot), GFP_KERNEL);
+ if (!slots)
+ return;
+
+ i = 0;
+ list_for_each_entry(memb, &ls->ls_nodes, list) {
+ if (i == num) {
+ log_error(ls, "dlm_lsop_recover_done bad num %d", num);
+ goto out;
+ }
+ slots[i].nodeid = memb->nodeid;
+ slots[i].slot = memb->slot;
+ i++;
+ }
+
+ ls->ls_ops->recover_done(ls->ls_ops_arg, slots, num,
+ ls->ls_slot, ls->ls_generation);
+ out:
+ kfree(slots);
+}
+
+static struct dlm_config_node *find_config_node(struct dlm_recover *rv,
+ int nodeid)
+{
+ int i;
+
+ for (i = 0; i < rv->nodes_count; i++) {
+ if (rv->nodes[i].nodeid == nodeid)
+ return &rv->nodes[i];
+ }
+ return NULL;
+}
+
int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
{
struct dlm_member *memb, *safe;
- int i, error, found, pos = 0, neg = 0, low = -1;
+ struct dlm_config_node *node;
+ int i, error, neg = 0, low = -1;
/* previously removed members that we've not finished removing need to
count as a negative change so the "neg" recovery steps will happen */
@@ -476,46 +546,32 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
/* move departed members from ls_nodes to ls_nodes_gone */
list_for_each_entry_safe(memb, safe, &ls->ls_nodes, list) {
- found = 0;
- for (i = 0; i < rv->node_count; i++) {
- if (memb->nodeid == rv->nodeids[i]) {
- found = 1;
- break;
- }
- }
+ node = find_config_node(rv, memb->nodeid);
+ if (node && !node->new)
+ continue;
- if (!found) {
- neg++;
- dlm_remove_member(ls, memb);
+ if (!node) {
log_debug(ls, "remove member %d", memb->nodeid);
+ } else {
+ /* removed and re-added */
+ log_debug(ls, "remove member %d comm_seq %u %u",
+ memb->nodeid, memb->comm_seq, node->comm_seq);
}
- }
-
- /* Add an entry to ls_nodes_gone for members that were removed and
- then added again, so that previous state for these nodes will be
- cleared during recovery. */
- for (i = 0; i < rv->new_count; i++) {
- if (!dlm_is_member(ls, rv->new[i]))
- continue;
- log_debug(ls, "new nodeid %d is a re-added member", rv->new[i]);
-
- memb = kzalloc(sizeof(struct dlm_member), GFP_NOFS);
- if (!memb)
- return -ENOMEM;
- memb->nodeid = rv->new[i];
- list_add_tail(&memb->list, &ls->ls_nodes_gone);
neg++;
+ list_move(&memb->list, &ls->ls_nodes_gone);
+ ls->ls_num_nodes--;
+ dlm_lsop_recover_slot(ls, memb);
}
/* add new members to ls_nodes */
- for (i = 0; i < rv->node_count; i++) {
- if (dlm_is_member(ls, rv->nodeids[i]))
+ for (i = 0; i < rv->nodes_count; i++) {
+ node = &rv->nodes[i];
+ if (dlm_is_member(ls, node->nodeid))
continue;
- dlm_add_member(ls, rv->nodeids[i]);
- pos++;
- log_debug(ls, "add member %d", rv->nodeids[i]);
+ dlm_add_member(ls, node);
+ log_debug(ls, "add member %d", node->nodeid);
}
list_for_each_entry(memb, &ls->ls_nodes, list) {
@@ -609,21 +665,22 @@ int dlm_ls_stop(struct dlm_ls *ls)
if (!ls->ls_recover_begin)
ls->ls_recover_begin = jiffies;
+
+ dlm_lsop_recover_prep(ls);
return 0;
}
int dlm_ls_start(struct dlm_ls *ls)
{
struct dlm_recover *rv = NULL, *rv_old;
- int *ids = NULL, *new = NULL;
- int error, ids_count = 0, new_count = 0;
+ struct dlm_config_node *nodes;
+ int error, count;
rv = kzalloc(sizeof(struct dlm_recover), GFP_NOFS);
if (!rv)
return -ENOMEM;
- error = dlm_nodeid_list(ls->ls_name, &ids, &ids_count,
- &new, &new_count);
+ error = dlm_config_nodes(ls->ls_name, &nodes, &count);
if (error < 0)
goto fail;
@@ -638,10 +695,8 @@ int dlm_ls_start(struct dlm_ls *ls)
goto fail;
}
- rv->nodeids = ids;
- rv->node_count = ids_count;
- rv->new = new;
- rv->new_count = new_count;
+ rv->nodes = nodes;
+ rv->nodes_count = count;
rv->seq = ++ls->ls_recover_seq;
rv_old = ls->ls_recover_args;
ls->ls_recover_args = rv;
@@ -649,9 +704,8 @@ int dlm_ls_start(struct dlm_ls *ls)
if (rv_old) {
log_error(ls, "unused recovery %llx %d",
- (unsigned long long)rv_old->seq, rv_old->node_count);
- kfree(rv_old->nodeids);
- kfree(rv_old->new);
+ (unsigned long long)rv_old->seq, rv_old->nodes_count);
+ kfree(rv_old->nodes);
kfree(rv_old);
}
@@ -660,8 +714,7 @@ int dlm_ls_start(struct dlm_ls *ls)
fail:
kfree(rv);
- kfree(ids);
- kfree(new);
+ kfree(nodes);
return error;
}
diff --git a/fs/dlm/member.h b/fs/dlm/member.h
index 7e87e8a79df..3deb70661c6 100644
--- a/fs/dlm/member.h
+++ b/fs/dlm/member.h
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -27,6 +27,7 @@ void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc);
int dlm_slots_copy_in(struct dlm_ls *ls);
int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size,
struct dlm_slot **slots_out, uint32_t *gen_out);
+void dlm_lsop_recover_done(struct dlm_ls *ls);
#endif /* __MEMBER_DOT_H__ */
diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c
index 5a9e1a49a86..3780caf7ae0 100644
--- a/fs/dlm/recoverd.c
+++ b/fs/dlm/recoverd.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -227,11 +227,12 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
dlm_grant_after_purge(ls);
- log_debug(ls, "dlm_recover %llx done: %u ms",
- (unsigned long long)rv->seq,
+ log_debug(ls, "dlm_recover %llx generation %u done: %u ms",
+ (unsigned long long)rv->seq, ls->ls_generation,
jiffies_to_msecs(jiffies - start));
mutex_unlock(&ls->ls_recoverd_active);
+ dlm_lsop_recover_done(ls);
return 0;
fail:
@@ -259,8 +260,7 @@ static void do_ls_recovery(struct dlm_ls *ls)
if (rv) {
ls_recover(ls, rv);
- kfree(rv->nodeids);
- kfree(rv->new);
+ kfree(rv->nodes);
kfree(rv);
}
}
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index d8ea6075640..eb4ed9ba309 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -392,8 +392,9 @@ static int device_create_lockspace(struct dlm_lspace_params *params)
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- error = dlm_new_lockspace(params->name, strlen(params->name),
- &lockspace, params->flags, DLM_USER_LVB_LEN);
+ error = dlm_new_lockspace(params->name, NULL, params->flags,
+ DLM_USER_LVB_LEN, NULL, NULL, NULL,
+ &lockspace);
if (error)
return error;
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 98c80d8c2a6..ce85b62bc0a 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -195,10 +195,10 @@ static int gdlm_mount(struct gfs2_sbd *sdp, const char *fsname)
return -EINVAL;
}
- error = dlm_new_lockspace(fsname, strlen(fsname), &ls->ls_dlm,
+ error = dlm_new_lockspace(fsname, NULL,
DLM_LSFL_FS | DLM_LSFL_NEWEXCL |
(ls->ls_nodir ? DLM_LSFL_NODIR : 0),
- GDLM_LVB_SIZE);
+ GDLM_LVB_SIZE, NULL, NULL, NULL, &ls->ls_dlm);
if (error)
printk(KERN_ERR "dlm_new_lockspace error %d", error);
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index a5ebe421195..286edf1e231 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -827,8 +827,8 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
goto out;
}
- rc = dlm_new_lockspace(conn->cc_name, strlen(conn->cc_name),
- &fsdlm, DLM_LSFL_FS, DLM_LVB_LEN);
+ rc = dlm_new_lockspace(conn->cc_name, NULL, DLM_LSFL_FS, DLM_LVB_LEN,
+ NULL, NULL, NULL, &fsdlm);
if (rc) {
ocfs2_live_connection_drop(control);
goto out;
diff --git a/include/linux/dlm.h b/include/linux/dlm.h
index d4e02f5353a..6c7f6e9546c 100644
--- a/include/linux/dlm.h
+++ b/include/linux/dlm.h
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -74,15 +74,76 @@ struct dlm_lksb {
#ifdef __KERNEL__
+struct dlm_slot {
+ int nodeid; /* 1 to MAX_INT */
+ int slot; /* 1 to MAX_INT */
+};
+
+/*
+ * recover_prep: called before the dlm begins lock recovery.
+ * Notfies lockspace user that locks from failed members will be granted.
+ * recover_slot: called after recover_prep and before recover_done.
+ * Identifies a failed lockspace member.
+ * recover_done: called after the dlm completes lock recovery.
+ * Identifies lockspace members and lockspace generation number.
+ */
+
+struct dlm_lockspace_ops {
+ void (*recover_prep) (void *ops_arg);
+ void (*recover_slot) (void *ops_arg, struct dlm_slot *slot);
+ void (*recover_done) (void *ops_arg, struct dlm_slot *slots,
+ int num_slots, int our_slot, uint32_t generation);
+};
+
/*
* dlm_new_lockspace
*
- * Starts a lockspace with the given name. If the named lockspace exists in
- * the cluster, the calling node joins it.
+ * Create/join a lockspace.
+ *
+ * name: lockspace name, null terminated, up to DLM_LOCKSPACE_LEN (not
+ * including terminating null).
+ *
+ * cluster: cluster name, null terminated, up to DLM_LOCKSPACE_LEN (not
+ * including terminating null). Optional. When cluster is null, it
+ * is not used. When set, dlm_new_lockspace() returns -EBADR if cluster
+ * is not equal to the dlm cluster name.
+ *
+ * flags:
+ * DLM_LSFL_NODIR
+ * The dlm should not use a resource directory, but statically assign
+ * resource mastery to nodes based on the name hash that is otherwise
+ * used to select the directory node. Must be the same on all nodes.
+ * DLM_LSFL_TIMEWARN
+ * The dlm should emit netlink messages if locks have been waiting
+ * for a configurable amount of time. (Unused.)
+ * DLM_LSFL_FS
+ * The lockspace user is in the kernel (i.e. filesystem). Enables
+ * direct bast/cast callbacks.
+ * DLM_LSFL_NEWEXCL
+ * dlm_new_lockspace() should return -EEXIST if the lockspace exists.
+ *
+ * lvblen: length of lvb in bytes. Must be multiple of 8.
+ * dlm_new_lockspace() returns an error if this does not match
+ * what other nodes are using.
+ *
+ * ops: callbacks that indicate lockspace recovery points so the
+ * caller can coordinate its recovery and know lockspace members.
+ * This is only used by the initial dlm_new_lockspace() call.
+ * Optional.
+ *
+ * ops_arg: arg for ops callbacks.
+ *
+ * ops_result: tells caller if the ops callbacks (if provided) will
+ * be used or not. 0: will be used, -EXXX will not be used.
+ * -EOPNOTSUPP: the dlm does not have recovery_callbacks enabled.
+ *
+ * lockspace: handle for dlm functions
*/
-int dlm_new_lockspace(const char *name, int namelen,
- dlm_lockspace_t **lockspace, uint32_t flags, int lvblen);
+int dlm_new_lockspace(const char *name, const char *cluster,
+ uint32_t flags, int lvblen,
+ const struct dlm_lockspace_ops *ops, void *ops_arg,
+ int *ops_result, dlm_lockspace_t **lockspace);
/*
* dlm_release_lockspace