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authorCsaba Henk <csaba@gluster.com>2011-01-27 05:23:33 +0000
committerAnand V. Avati <avati@dev.gluster.com>2011-01-27 03:17:08 -0800
commit66808736b7af00a868e98464282b1118fc80a612 (patch)
tree69598d990b04725c6ac2e8ed6787483b44979ea0 /xlators/mgmt
parent482d77b85d84bf5c2b48e4717f8d186967e42e63 (diff)
volgen: add marker to brick volfiles
Signed-off-by: Csaba Henk <csaba@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 2310 (georeplication) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2310
Diffstat (limited to 'xlators/mgmt')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volgen.c99
1 files changed, 94 insertions, 5 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index 15c5274c8..aa8bc5178 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -83,6 +83,8 @@ struct volopt_map_entry {
char *value;
};
+#define MARKER_VOL_KEY "monitor.xtime-marker"
+
static struct volopt_map_entry glusterd_volopt_map[] = {
{"cluster.lookup-unhashed", "cluster/distribute", }, /* NODOC */
{"cluster.min-free-disk", "cluster/distribute", }, /* NODOC */
@@ -139,6 +141,8 @@ static struct volopt_map_entry glusterd_volopt_map[] = {
{"nfs.enable-ino32", "nfs/server", "nfs.enable-ino32",},
{"nfs.mem-factor", "nfs/server", "nfs.mem-factor",},
+ {MARKER_VOL_KEY, "features/marker", "!marker", "off"},
+
{NULL, }
};
@@ -658,15 +662,15 @@ optget_option_handler (glusterfs_graph_t *graph, struct volopt_map_entry *vme,
}
/* This getter considers defaults also. */
-int
-glusterd_volinfo_get (glusterd_volinfo_t *volinfo, char *key, char **value)
+static int
+volgen_dict_get (dict_t *dict, char *key, char **value)
{
struct volopt_map_entry vme = {0,};
int ret = 0;
vme.key = key;
- ret = volgen_graph_set_options_generic (NULL, volinfo->dict, &vme,
+ ret = volgen_graph_set_options_generic (NULL, dict, &vme,
&optget_option_handler);
if (ret) {
gf_log ("", GF_LOG_ERROR, "Out of memory");
@@ -711,6 +715,12 @@ option_complete (char *key, char **completion)
}
int
+glusterd_volinfo_get (glusterd_volinfo_t *volinfo, char *key, char **value)
+{
+ return volgen_dict_get (volinfo->dict, key, value);
+}
+
+int
glusterd_check_option_exists (char *key, char **completion)
{
dict_t *dict = NULL;
@@ -965,6 +975,8 @@ server_spec_option_handler (glusterfs_graph_t *graph,
return ret;
}
+static void get_vol_tstamp_file (char *filename, glusterd_volinfo_t *volinfo);
+
static int
server_graph_builder (glusterfs_graph_t *graph, glusterd_volinfo_t *volinfo,
dict_t *set_dict, void *param)
@@ -975,8 +987,12 @@ server_graph_builder (glusterfs_graph_t *graph, glusterd_volinfo_t *volinfo,
xlator_t *xl = NULL;
xlator_t *txl = NULL;
xlator_t *rbxl = NULL;
- int ret = 0;
char transt[16] = {0,};
+ char volume_id[64] = {0,};
+ char tstamp_file[PATH_MAX] = {0,};
+ char *marker_val = NULL;
+ gf_boolean_t marker = _gf_false;
+ int ret = 0;
path = param;
volname = volinfo->volname;
@@ -1029,6 +1045,30 @@ server_graph_builder (glusterfs_graph_t *graph, glusterd_volinfo_t *volinfo,
if (!xl)
return -1;
+ ret = volgen_dict_get (set_dict, MARKER_VOL_KEY, &marker_val);
+ if (ret)
+ return -1;
+ if (marker_val)
+ ret = gf_string2boolean (marker_val, &marker);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "value for "MARKER_VOL_KEY" option is junk");
+
+ return -1;
+ }
+ if (marker) {
+ xl = volgen_graph_add (graph, "features/marker", volname);
+ if (!xl)
+ return -1;
+ uuid_unparse (volinfo->volume_id, volume_id);
+ ret = xlator_set_option (xl, "volume-uuid", volume_id);
+ if (ret)
+ return -1;
+ get_vol_tstamp_file (tstamp_file, volinfo);
+ ret = xlator_set_option (xl, "timestamp-file", tstamp_file);
+ if (ret)
+ return -1;
+ }
+
xl = volgen_graph_add_as (graph, "debug/io-stats", path);
if (!xl)
return -1;
@@ -1401,11 +1441,60 @@ glusterd_generate_brick_volfile (glusterd_volinfo_t *volinfo,
return ret;
}
+static void
+get_vol_tstamp_file (char *filename, glusterd_volinfo_t *volinfo)
+{
+ glusterd_conf_t *priv = NULL;
+
+ priv = THIS->private;
+
+ GLUSTERD_GET_VOLUME_DIR (filename, volinfo, priv);
+ strncat (filename, "/marker.tstamp",
+ PATH_MAX - strlen(filename) - 1);
+}
+
static int
generate_brick_volfiles (glusterd_volinfo_t *volinfo)
{
glusterd_brickinfo_t *brickinfo = NULL;
- int ret = -1;
+ char tstamp_file[PATH_MAX] = {0,};
+ char *marker_val = NULL;
+ gf_boolean_t marker = _gf_false;
+ int ret = -1;
+
+ ret = glusterd_volinfo_get (volinfo, MARKER_VOL_KEY, &marker_val);
+ if (ret)
+ return -1;
+ if (marker_val)
+ ret = gf_string2boolean (marker_val, &marker);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "value for "MARKER_VOL_KEY" option is junk");
+
+ return -1;
+ }
+
+ get_vol_tstamp_file (tstamp_file, volinfo);
+
+ if (marker) {
+ ret = open (tstamp_file, O_WRONLY|O_CREAT|O_EXCL);
+ if (ret == -1 && errno == EEXIST)
+ ret = 0;
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "failed to create %s (%s)",
+ tstamp_file, strerror (errno));
+ return -1;
+ }
+ close (ret);
+ } else {
+ ret = unlink (tstamp_file);
+ if (ret == -1 && errno == ENOENT)
+ ret = 0;
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "failed to unlink %s (%s)",
+ tstamp_file, strerror (errno));
+ return -1;
+ }
+ }
list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) {
gf_log ("", GF_LOG_DEBUG,