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ocfs2/dlm: Clean up messages in o2dlm
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o2dlm messages needed a facelift.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Sunil Mushran committed Jul 24, 2011
1 parent 1dfecf8 commit 8decab3
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Showing 5 changed files with 71 additions and 70 deletions.
18 changes: 10 additions & 8 deletions fs/ocfs2/dlm/dlmdomain.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -539,17 +539,17 @@ static void dlm_mark_domain_leaving(struct dlm_ctxt *dlm)

static void __dlm_print_nodes(struct dlm_ctxt *dlm)
{
int node = -1;
int node = -1, num = 0;

assert_spin_locked(&dlm->spinlock);

printk(KERN_NOTICE "o2dlm: Nodes in domain %s: ", dlm->name);

printk("( ");
while ((node = find_next_bit(dlm->domain_map, O2NM_MAX_NODES,
node + 1)) < O2NM_MAX_NODES) {
printk("%d ", node);
++num;
}
printk("\n");
printk(") %u nodes\n", num);
}

static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,
Expand All @@ -566,11 +566,10 @@ static int dlm_exit_domain_handler(struct o2net_msg *msg, u32 len, void *data,

node = exit_msg->node_idx;

printk(KERN_NOTICE "o2dlm: Node %u leaves domain %s\n", node, dlm->name);

spin_lock(&dlm->spinlock);
clear_bit(node, dlm->domain_map);
clear_bit(node, dlm->exit_domain_map);
printk(KERN_NOTICE "o2dlm: Node %u leaves domain %s ", node, dlm->name);
__dlm_print_nodes(dlm);

/* notify anything attached to the heartbeat events */
Expand Down Expand Up @@ -755,6 +754,7 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)

dlm_mark_domain_leaving(dlm);
dlm_leave_domain(dlm);
printk(KERN_NOTICE "o2dlm: Leaving domain %s\n", dlm->name);
dlm_force_free_mles(dlm);
dlm_complete_dlm_shutdown(dlm);
}
Expand Down Expand Up @@ -970,7 +970,7 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
clear_bit(assert->node_idx, dlm->exit_domain_map);
__dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);

printk(KERN_NOTICE "o2dlm: Node %u joins domain %s\n",
printk(KERN_NOTICE "o2dlm: Node %u joins domain %s ",
assert->node_idx, dlm->name);
__dlm_print_nodes(dlm);

Expand Down Expand Up @@ -1701,8 +1701,10 @@ static int dlm_try_to_join_domain(struct dlm_ctxt *dlm)
bail:
spin_lock(&dlm->spinlock);
__dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN);
if (!status)
if (!status) {
printk(KERN_NOTICE "o2dlm: Joining domain %s ", dlm->name);
__dlm_print_nodes(dlm);
}
spin_unlock(&dlm->spinlock);

if (ctxt) {
Expand Down
22 changes: 9 additions & 13 deletions fs/ocfs2/dlm/dlmlock.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -319,27 +319,23 @@ static enum dlm_status dlm_send_remote_lock_request(struct dlm_ctxt *dlm,
tmpret = o2net_send_message(DLM_CREATE_LOCK_MSG, dlm->key, &create,
sizeof(create), res->owner, &status);
if (tmpret >= 0) {
// successfully sent and received
ret = status; // this is already a dlm_status
ret = status;
if (ret == DLM_REJECTED) {
mlog(ML_ERROR, "%s:%.*s: BUG. this is a stale lockres "
"no longer owned by %u. that node is coming back "
"up currently.\n", dlm->name, create.namelen,
mlog(ML_ERROR, "%s: res %.*s, Stale lockres no longer "
"owned by node %u. That node is coming back up "
"currently.\n", dlm->name, create.namelen,
create.name, res->owner);
dlm_print_one_lock_resource(res);
BUG();
}
} else {
mlog(ML_ERROR, "Error %d when sending message %u (key 0x%x) to "
"node %u\n", tmpret, DLM_CREATE_LOCK_MSG, dlm->key,
res->owner);
if (dlm_is_host_down(tmpret)) {
mlog(ML_ERROR, "%s: res %.*s, Error %d send CREATE LOCK to "
"node %u\n", dlm->name, create.namelen, create.name,
tmpret, res->owner);
if (dlm_is_host_down(tmpret))
ret = DLM_RECOVERING;
mlog(0, "node %u died so returning DLM_RECOVERING "
"from lock message!\n", res->owner);
} else {
else
ret = dlm_err_to_dlm_status(tmpret);
}
}

return ret;
Expand Down
46 changes: 21 additions & 25 deletions fs/ocfs2/dlm/dlmmaster.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -829,8 +829,8 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
* but they might own this lockres. wait on them. */
bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
if (bit < O2NM_MAX_NODES) {
mlog(ML_NOTICE, "%s:%.*s: at least one node (%d) to "
"recover before lock mastery can begin\n",
mlog(0, "%s: res %.*s, At least one node (%d) "
"to recover before lock mastery can begin\n",
dlm->name, namelen, (char *)lockid, bit);
wait_on_recovery = 1;
}
Expand Down Expand Up @@ -864,8 +864,8 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
* dlm spinlock would be detectable be a change on the mle,
* so we only need to clear out the recovery map once. */
if (dlm_is_recovery_lock(lockid, namelen)) {
mlog(ML_NOTICE, "%s: recovery map is not empty, but "
"must master $RECOVERY lock now\n", dlm->name);
mlog(0, "%s: Recovery map is not empty, but must "
"master $RECOVERY lock now\n", dlm->name);
if (!dlm_pre_master_reco_lockres(dlm, res))
wait_on_recovery = 0;
else {
Expand All @@ -883,8 +883,8 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
spin_lock(&dlm->spinlock);
bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
if (bit < O2NM_MAX_NODES) {
mlog(ML_NOTICE, "%s:%.*s: at least one node (%d) to "
"recover before lock mastery can begin\n",
mlog(0, "%s: res %.*s, At least one node (%d) "
"to recover before lock mastery can begin\n",
dlm->name, namelen, (char *)lockid, bit);
wait_on_recovery = 1;
} else
Expand Down Expand Up @@ -913,8 +913,8 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
* yet, keep going until it does. this is how the
* master will know that asserts are needed back to
* the lower nodes. */
mlog(0, "%s:%.*s: requests only up to %u but master "
"is %u, keep going\n", dlm->name, namelen,
mlog(0, "%s: res %.*s, Requests only up to %u but "
"master is %u, keep going\n", dlm->name, namelen,
lockid, nodenum, mle->master);
}
}
Expand All @@ -924,13 +924,12 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
ret = dlm_wait_for_lock_mastery(dlm, res, mle, &blocked);
if (ret < 0) {
wait_on_recovery = 1;
mlog(0, "%s:%.*s: node map changed, redo the "
"master request now, blocked=%d\n",
dlm->name, res->lockname.len,
mlog(0, "%s: res %.*s, Node map changed, redo the master "
"request now, blocked=%d\n", dlm->name, res->lockname.len,
res->lockname.name, blocked);
if (++tries > 20) {
mlog(ML_ERROR, "%s:%.*s: spinning on "
"dlm_wait_for_lock_mastery, blocked=%d\n",
mlog(ML_ERROR, "%s: res %.*s, Spinning on "
"dlm_wait_for_lock_mastery, blocked = %d\n",
dlm->name, res->lockname.len,
res->lockname.name, blocked);
dlm_print_one_lock_resource(res);
Expand All @@ -940,7 +939,8 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
goto redo_request;
}

mlog(0, "lockres mastered by %u\n", res->owner);
mlog(0, "%s: res %.*s, Mastered by %u\n", dlm->name, res->lockname.len,
res->lockname.name, res->owner);
/* make sure we never continue without this */
BUG_ON(res->owner == O2NM_MAX_NODES);

Expand Down Expand Up @@ -2187,8 +2187,6 @@ int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
namelen = res->lockname.len;
BUG_ON(namelen > O2NM_MAX_NAME_LEN);

mlog(0, "%s:%.*s: sending deref to %d\n",
dlm->name, namelen, lockname, res->owner);
memset(&deref, 0, sizeof(deref));
deref.node_idx = dlm->node_num;
deref.namelen = namelen;
Expand All @@ -2197,14 +2195,12 @@ int dlm_drop_lockres_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
ret = o2net_send_message(DLM_DEREF_LOCKRES_MSG, dlm->key,
&deref, sizeof(deref), res->owner, &r);
if (ret < 0)
mlog(ML_ERROR, "Error %d when sending message %u (key 0x%x) to "
"node %u\n", ret, DLM_DEREF_LOCKRES_MSG, dlm->key,
res->owner);
mlog(ML_ERROR, "%s: res %.*s, error %d send DEREF to node %u\n",
dlm->name, namelen, lockname, ret, res->owner);
else if (r < 0) {
/* BAD. other node says I did not have a ref. */
mlog(ML_ERROR,"while dropping ref on %s:%.*s "
"(master=%u) got %d.\n", dlm->name, namelen,
lockname, res->owner, r);
mlog(ML_ERROR, "%s: res %.*s, DEREF to node %u got %d\n",
dlm->name, namelen, lockname, res->owner, r);
dlm_print_one_lock_resource(res);
BUG();
}
Expand Down Expand Up @@ -2916,9 +2912,9 @@ static int dlm_do_migrate_request(struct dlm_ctxt *dlm,
&migrate, sizeof(migrate), nodenum,
&status);
if (ret < 0) {
mlog(ML_ERROR, "Error %d when sending message %u (key "
"0x%x) to node %u\n", ret, DLM_MIGRATE_REQUEST_MSG,
dlm->key, nodenum);
mlog(ML_ERROR, "%s: res %.*s, Error %d send "
"MIGRATE_REQUEST to node %u\n", dlm->name,
migrate.namelen, migrate.name, ret, nodenum);
if (!dlm_is_host_down(ret)) {
mlog(ML_ERROR, "unhandled error=%d!\n", ret);
BUG();
Expand Down
53 changes: 31 additions & 22 deletions fs/ocfs2/dlm/dlmrecovery.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -430,6 +430,8 @@ static void dlm_begin_recovery(struct dlm_ctxt *dlm)
{
spin_lock(&dlm->spinlock);
BUG_ON(dlm->reco.state & DLM_RECO_STATE_ACTIVE);
printk(KERN_NOTICE "o2dlm: Begin recovery on domain %s for node %u\n",
dlm->name, dlm->reco.dead_node);
dlm->reco.state |= DLM_RECO_STATE_ACTIVE;
spin_unlock(&dlm->spinlock);
}
Expand All @@ -440,9 +442,18 @@ static void dlm_end_recovery(struct dlm_ctxt *dlm)
BUG_ON(!(dlm->reco.state & DLM_RECO_STATE_ACTIVE));
dlm->reco.state &= ~DLM_RECO_STATE_ACTIVE;
spin_unlock(&dlm->spinlock);
printk(KERN_NOTICE "o2dlm: End recovery on domain %s\n", dlm->name);
wake_up(&dlm->reco.event);
}

static void dlm_print_recovery_master(struct dlm_ctxt *dlm)
{
printk(KERN_NOTICE "o2dlm: Node %u (%s) is the Recovery Master for the "
"dead node %u in domain %s\n", dlm->reco.new_master,
(dlm->node_num == dlm->reco.new_master ? "me" : "he"),
dlm->reco.dead_node, dlm->name);
}

static int dlm_do_recovery(struct dlm_ctxt *dlm)
{
int status = 0;
Expand Down Expand Up @@ -505,9 +516,8 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
}
mlog(0, "another node will master this recovery session.\n");
}
mlog(0, "dlm=%s (%d), new_master=%u, this node=%u, dead_node=%u\n",
dlm->name, task_pid_nr(dlm->dlm_reco_thread_task), dlm->reco.new_master,
dlm->node_num, dlm->reco.dead_node);

dlm_print_recovery_master(dlm);

/* it is safe to start everything back up here
* because all of the dead node's lock resources
Expand All @@ -518,15 +528,13 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
return 0;

master_here:
mlog(ML_NOTICE, "(%d) Node %u is the Recovery Master for the Dead Node "
"%u for Domain %s\n", task_pid_nr(dlm->dlm_reco_thread_task),
dlm->node_num, dlm->reco.dead_node, dlm->name);
dlm_print_recovery_master(dlm);

status = dlm_remaster_locks(dlm, dlm->reco.dead_node);
if (status < 0) {
/* we should never hit this anymore */
mlog(ML_ERROR, "error %d remastering locks for node %u, "
"retrying.\n", status, dlm->reco.dead_node);
mlog(ML_ERROR, "%s: Error %d remastering locks for node %u, "
"retrying.\n", dlm->name, status, dlm->reco.dead_node);
/* yield a bit to allow any final network messages
* to get handled on remaining nodes */
msleep(100);
Expand Down Expand Up @@ -567,7 +575,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node)
BUG_ON(ndata->state != DLM_RECO_NODE_DATA_INIT);
ndata->state = DLM_RECO_NODE_DATA_REQUESTING;

mlog(0, "requesting lock info from node %u\n",
mlog(0, "%s: Requesting lock info from node %u\n", dlm->name,
ndata->node_num);

if (ndata->node_num == dlm->node_num) {
Expand Down Expand Up @@ -640,7 +648,7 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node)
spin_unlock(&dlm_reco_state_lock);
}

mlog(0, "done requesting all lock info\n");
mlog(0, "%s: Done requesting all lock info\n", dlm->name);

/* nodes should be sending reco data now
* just need to wait */
Expand Down Expand Up @@ -802,10 +810,9 @@ static int dlm_request_all_locks(struct dlm_ctxt *dlm, u8 request_from,

/* negative status is handled by caller */
if (ret < 0)
mlog(ML_ERROR, "Error %d when sending message %u (key "
"0x%x) to node %u\n", ret, DLM_LOCK_REQUEST_MSG,
dlm->key, request_from);

mlog(ML_ERROR, "%s: Error %d send LOCK_REQUEST to node %u "
"to recover dead node %u\n", dlm->name, ret,
request_from, dead_node);
// return from here, then
// sleep until all received or error
return ret;
Expand Down Expand Up @@ -956,9 +963,9 @@ static int dlm_send_all_done_msg(struct dlm_ctxt *dlm, u8 dead_node, u8 send_to)
ret = o2net_send_message(DLM_RECO_DATA_DONE_MSG, dlm->key, &done_msg,
sizeof(done_msg), send_to, &tmpret);
if (ret < 0) {
mlog(ML_ERROR, "Error %d when sending message %u (key "
"0x%x) to node %u\n", ret, DLM_RECO_DATA_DONE_MSG,
dlm->key, send_to);
mlog(ML_ERROR, "%s: Error %d send RECO_DATA_DONE to node %u "
"to recover dead node %u\n", dlm->name, ret, send_to,
dead_node);
if (!dlm_is_host_down(ret)) {
BUG();
}
Expand Down Expand Up @@ -1127,9 +1134,11 @@ static int dlm_send_mig_lockres_msg(struct dlm_ctxt *dlm,
if (ret < 0) {
/* XXX: negative status is not handled.
* this will end up killing this node. */
mlog(ML_ERROR, "Error %d when sending message %u (key "
"0x%x) to node %u\n", ret, DLM_MIG_LOCKRES_MSG,
dlm->key, send_to);
mlog(ML_ERROR, "%s: res %.*s, Error %d send MIG_LOCKRES to "
"node %u (%s)\n", dlm->name, mres->lockname_len,
mres->lockname, ret, send_to,
(orig_flags & DLM_MRES_MIGRATION ?
"migration" : "recovery"));
} else {
/* might get an -ENOMEM back here */
ret = status;
Expand Down Expand Up @@ -2324,9 +2333,9 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
dlm_revalidate_lvb(dlm, res, dead_node);
if (res->owner == dead_node) {
if (res->state & DLM_LOCK_RES_DROPPING_REF) {
mlog(ML_NOTICE, "Ignore %.*s for "
mlog(ML_NOTICE, "%s: res %.*s, Skip "
"recovery as it is being freed\n",
res->lockname.len,
dlm->name, res->lockname.len,
res->lockname.name);
} else
dlm_move_lockres_to_recovery_list(dlm,
Expand Down
2 changes: 0 additions & 2 deletions fs/ocfs2/dlm/dlmthread.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -185,8 +185,6 @@ static void dlm_purge_lockres(struct dlm_ctxt *dlm,
/* clear our bit from the master's refmap, ignore errors */
ret = dlm_drop_lockres_ref(dlm, res);
if (ret < 0) {
mlog(ML_ERROR, "%s: deref %.*s failed %d\n", dlm->name,
res->lockname.len, res->lockname.name, ret);
if (!dlm_is_host_down(ret))
BUG();
}
Expand Down

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