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path: root/fs/ocfs2/dlm/dlmlock.c
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Diffstat (limited to 'fs/ocfs2/dlm/dlmlock.c')
-rw-r--r--fs/ocfs2/dlm/dlmlock.c73
1 files changed, 54 insertions, 19 deletions
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 6fea28318d6..5ca57ec650c 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -53,7 +53,7 @@
#define MLOG_MASK_PREFIX ML_DLM
#include "cluster/masklog.h"
-static spinlock_t dlm_cookie_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(dlm_cookie_lock);
static u64 dlm_next_cookie = 1;
static enum dlm_status dlm_send_remote_lock_request(struct dlm_ctxt *dlm,
@@ -201,6 +201,7 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
struct dlm_lock *lock, int flags)
{
enum dlm_status status = DLM_DENIED;
+ int lockres_changed = 1;
mlog_entry("type=%d\n", lock->ml.type);
mlog(0, "lockres %.*s, flags = 0x%x\n", res->lockname.len,
@@ -226,8 +227,25 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
lock->lock_pending = 0;
if (status != DLM_NORMAL) {
- if (status != DLM_NOTQUEUED)
+ if (status == DLM_RECOVERING &&
+ dlm_is_recovery_lock(res->lockname.name,
+ res->lockname.len)) {
+ /* recovery lock was mastered by dead node.
+ * we need to have calc_usage shoot down this
+ * lockres and completely remaster it. */
+ mlog(0, "%s: recovery lock was owned by "
+ "dead node %u, remaster it now.\n",
+ dlm->name, res->owner);
+ } else if (status != DLM_NOTQUEUED) {
+ /*
+ * DO NOT call calc_usage, as this would unhash
+ * the remote lockres before we ever get to use
+ * it. treat as if we never made any change to
+ * the lockres.
+ */
+ lockres_changed = 0;
dlm_error(status);
+ }
dlm_revert_pending_lock(res, lock);
dlm_lock_put(lock);
} else if (dlm_is_recovery_lock(res->lockname.name,
@@ -239,12 +257,12 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
mlog(0, "%s: $RECOVERY lock for this node (%u) is "
"mastered by %u; got lock, manually granting (no ast)\n",
dlm->name, dlm->node_num, res->owner);
- list_del_init(&lock->list);
- list_add_tail(&lock->list, &res->granted);
+ list_move_tail(&lock->list, &res->granted);
}
spin_unlock(&res->spinlock);
- dlm_lockres_calc_usage(dlm, res);
+ if (lockres_changed)
+ dlm_lockres_calc_usage(dlm, res);
wake_up(&res->wq);
return status;
@@ -281,6 +299,14 @@ static enum dlm_status dlm_send_remote_lock_request(struct dlm_ctxt *dlm,
if (tmpret >= 0) {
// successfully sent and received
ret = status; // this is already a dlm_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,
+ create.name, res->owner);
+ dlm_print_one_lock_resource(res);
+ BUG();
+ }
} else {
mlog_errno(tmpret);
if (dlm_is_host_down(tmpret)) {
@@ -382,13 +408,13 @@ struct dlm_lock * dlm_new_lock(int type, u8 node, u64 cookie,
struct dlm_lock *lock;
int kernel_allocated = 0;
- lock = kcalloc(1, sizeof(*lock), GFP_KERNEL);
+ lock = kcalloc(1, sizeof(*lock), GFP_NOFS);
if (!lock)
return NULL;
if (!lksb) {
/* zero memory only if kernel-allocated */
- lksb = kcalloc(1, sizeof(*lksb), GFP_KERNEL);
+ lksb = kcalloc(1, sizeof(*lksb), GFP_NOFS);
if (!lksb) {
kfree(lock);
return NULL;
@@ -429,11 +455,16 @@ int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data)
if (!dlm_grab(dlm))
return DLM_REJECTED;
- mlog_bug_on_msg(!dlm_domain_fully_joined(dlm),
- "Domain %s not fully joined!\n", dlm->name);
-
name = create->name;
namelen = create->namelen;
+ status = DLM_REJECTED;
+ if (!dlm_domain_fully_joined(dlm)) {
+ mlog(ML_ERROR, "Domain %s not fully joined, but node %u is "
+ "sending a create_lock message for lock %.*s!\n",
+ dlm->name, create->node_idx, namelen, name);
+ dlm_error(status);
+ goto leave;
+ }
status = DLM_IVBUFLEN;
if (namelen > DLM_LOCKID_NAME_MAX) {
@@ -669,18 +700,22 @@ retry_lock:
msleep(100);
/* no waiting for dlm_reco_thread */
if (recovery) {
- if (status == DLM_RECOVERING) {
- mlog(0, "%s: got RECOVERING "
- "for $REOCVERY lock, master "
- "was %u\n", dlm->name,
- res->owner);
- dlm_wait_for_node_death(dlm, res->owner,
- DLM_NODE_DEATH_WAIT_MAX);
- }
+ if (status != DLM_RECOVERING)
+ goto retry_lock;
+
+ mlog(0, "%s: got RECOVERING "
+ "for $RECOVERY lock, master "
+ "was %u\n", dlm->name,
+ res->owner);
+ /* wait to see the node go down, then
+ * drop down and allow the lockres to
+ * get cleaned up. need to remaster. */
+ dlm_wait_for_node_death(dlm, res->owner,
+ DLM_NODE_DEATH_WAIT_MAX);
} else {
dlm_wait_for_recovery(dlm);
+ goto retry_lock;
}
- goto retry_lock;
}
if (status != DLM_NORMAL) {