From mboxrd@z Thu Jan 1 00:00:00 1970 From: Goldwyn Rodrigues Date: Fri, 27 Sep 2013 12:09:00 -0500 Subject: [Ocfs2-devel] [PATCH 5/7] Record this node's information Message-ID: <20130927170855.GA11732@shrek.lan> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com --- fs/ocfs2/stack_user.c | 44 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 34 insertions(+), 10 deletions(-) diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index ffefbb5..cccc1e1 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include "stackglue.h" @@ -116,6 +117,9 @@ struct ocfs2_live_connection { struct list_head oc_list; struct ocfs2_cluster_connection *oc_conn; enum ocfs2_connection_type oc_type; + atomic_t oc_this_node; + int oc_our_slot; + wait_queue_head_t oc_wait; }; struct ocfs2_control_private { @@ -205,15 +209,13 @@ static struct ocfs2_live_connection *ocfs2_connection_find(const char *name) * fill_super(), we can't get dupes here. */ static int ocfs2_live_connection_new(struct ocfs2_cluster_connection *conn, - struct ocfs2_live_connection *c, - enum ocfs2_connection_type type) + struct ocfs2_live_connection *c) { int rc = 0; mutex_lock(&ocfs2_control_lock); c->oc_conn = conn; - c->oc_type = type; - if ((type == NO_CONTROLD) || atomic_read(&ocfs2_control_opened)) + if ((c->oc_type == NO_CONTROLD) || atomic_read(&ocfs2_control_opened)) list_add(&c->oc_list, &ocfs2_live_connection_list); else { printk(KERN_ERR @@ -802,12 +804,30 @@ static void user_recover_prep(void *arg) static void user_recover_slot(void *arg, struct dlm_slot *slot) { + struct ocfs2_cluster_connection *conn = + (struct ocfs2_cluster_connection *) arg; + printk(KERN_INFO "ocfs2: Node %d/%d down. Initiating recovery.\n", + slot->nodeid, slot->slot); + conn->cc_recovery_handler(slot->nodeid, conn->cc_recovery_data); } static void user_recover_done(void *arg, struct dlm_slot *slots, int num_slots, int our_slot, uint32_t generation) { + struct ocfs2_cluster_connection *conn = + (struct ocfs2_cluster_connection *)arg; + struct ocfs2_live_connection *lc = conn->cc_private; + int i; + + for (i = 0; i < num_slots; i++) + if (slots[i].slot == our_slot) { + atomic_set(&lc->oc_this_node, slots[i].nodeid); + break; + } + + lc->oc_our_slot = our_slot; + wake_up(&lc->oc_wait); } const struct dlm_lockspace_ops ocfs2_ls_ops = { @@ -830,7 +850,6 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) dlm_lockspace_t *fsdlm; struct ocfs2_live_connection *lc = NULL; int rc = 0, ops_rv; - enum ocfs2_connection_type type = NO_CONTROLD; BUG_ON(conn == NULL); @@ -840,6 +859,11 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) goto out; } + init_waitqueue_head(&lc->oc_wait); + atomic_set(&lc->oc_this_node, 0); + conn->cc_private = lc; + lc->oc_type = NO_CONTROLD; + rc = dlm_new_lockspace(conn->cc_name, conn->cc_cluster_name, DLM_LSFL_FS, DLM_LVB_LEN, &ocfs2_ls_ops, conn, &ops_rv, &fsdlm); @@ -848,7 +872,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) goto out; if (ops_rv == -EOPNOTSUPP) { - type = WITH_CONTROLD; + lc->oc_type = WITH_CONTROLD; printk(KERN_NOTICE "ocfs2: You seem to be using an older " "version of dlm_controld and/or ocfs2-tools." " Please consider upgrading.\n"); @@ -858,11 +882,11 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) } conn->cc_lockspace = fsdlm; - rc = ocfs2_live_connection_new(conn, lc, type); + rc = ocfs2_live_connection_new(conn, lc); if (rc) goto out; - if (type == WITH_CONTROLD) { + if (lc->oc_type == WITH_CONTROLD) { /* * running_proto must have been set before we allowed any mounts * to proceed. @@ -890,9 +914,9 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) lc = NULL; goto out; } - } + } else if (lc->oc_type == NO_CONTROLD) + wait_event(lc->oc_wait, (atomic_read(&lc->oc_this_node) > 0)); - conn->cc_private = lc; out: if (rc && lc) kfree(lc); -- 1.8.1.4 -- Goldwyn