extern int
select_features (struct multipath * mp)
{
struct mpentry * mpe;
char *origin;
if ((mpe = find_mpe(mp->wwid)) && mpe->features) {
mp->features = STRDUP(mpe->features);
origin = "LUN setting";
} else if (mp->hwe && mp->hwe->features) {
mp->features = STRDUP(mp->hwe->features);
origin = "controller setting";
} else if (conf->features) {
mp->features = STRDUP(conf->features);
origin = "config file default";
} else {
mp->features = set_default(DEFAULT_FEATURES);
origin = "internal default";
}
condlog(3, "%s: features = %s (%s)",
mp->alias, mp->features, origin);
if (strstr(mp->features, "queue_if_no_path")) {
if (mp->no_path_retry == NO_PATH_RETRY_UNDEF)
mp->no_path_retry = NO_PATH_RETRY_QUEUE;
else if (mp->no_path_retry == NO_PATH_RETRY_FAIL) {
condlog(1, "%s: config error, overriding 'no_path_retry' value",
mp->alias);
mp->no_path_retry = NO_PATH_RETRY_QUEUE;
}
}
return 0;
}
extern int
select_prio (struct path * pp)
{
struct mpentry * mpe;
struct prio * p = &pp->prio;
if (pp->detect_prio == DETECT_PRIO_ON) {
detect_prio(pp);
if (prio_selected(p)) {
condlog(3, "%s: prio = %s (detected setting)",
pp->dev, prio_name(p));
return 0;
}
}
if ((mpe = find_mpe(pp->wwid))) {
if (mpe->prio_name) {
prio_get(p, mpe->prio_name, mpe->prio_args);
condlog(3, "%s: prio = %s (LUN setting)",
pp->dev, prio_name(p));
return 0;
}
}
if (pp->hwe && pp->hwe->prio_name) {
prio_get(p, pp->hwe->prio_name, pp->hwe->prio_args);
condlog(3, "%s: prio = %s (controller setting)",
pp->dev, pp->hwe->prio_name);
condlog(3, "%s: prio args = %s (controller setting)",
pp->dev, pp->hwe->prio_args);
return 0;
}
if (conf->prio_name) {
prio_get(p, conf->prio_name, conf->prio_args);
condlog(3, "%s: prio = %s (config file default)",
pp->dev, conf->prio_name);
condlog(3, "%s: prio args = %s (config file default)",
pp->dev, conf->prio_args);
return 0;
}
prio_get(p, DEFAULT_PRIO, DEFAULT_PRIO_ARGS);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO_ARGS);
return 0;
}
extern int
select_prio (struct path * pp)
{
struct mpentry * mpe;
if ((mpe = find_mpe(pp->wwid))) {
if (mpe->prio_name) {
pp->prio = prio_lookup(mpe->prio_name);
prio_set_args(pp->prio, mpe->prio_args);
condlog(3, "%s: prio = %s (LUN setting)",
pp->dev, pp->prio->name);
return 0;
}
}
if (pp->hwe && pp->hwe->prio_name) {
pp->prio = prio_lookup(pp->hwe->prio_name);
prio_set_args(pp->prio, pp->hwe->prio_args);
condlog(3, "%s: prio = %s (controller setting)",
pp->dev, pp->hwe->prio_name);
condlog(3, "%s: prio args = %s (controller setting)",
pp->dev, pp->hwe->prio_args);
return 0;
}
if (conf->prio_name) {
pp->prio = prio_lookup(conf->prio_name);
prio_set_args(pp->prio, conf->prio_args);
condlog(3, "%s: prio = %s (config file default)",
pp->dev, conf->prio_name);
condlog(3, "%s: prio args = %s (config file default)",
pp->dev, conf->prio_args);
return 0;
}
pp->prio = prio_lookup(DEFAULT_PRIO);
prio_set_args(pp->prio, DEFAULT_PRIO_ARGS);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO);
condlog(3, "%s: prio = %s (internal default)",
pp->dev, DEFAULT_PRIO_ARGS);
return 0;
}
int select_prio(struct config *conf, struct path *pp)
{
char *origin;
struct mpentry * mpe;
struct prio * p = &pp->prio;
if (pp->detect_prio == DETECT_PRIO_ON) {
detect_prio(conf, pp);
if (prio_selected(p)) {
origin = "(setting: array autodetected)";
goto out;
}
}
mpe = find_mpe(conf->mptable, pp->wwid);
set_prio(conf->multipath_dir, mpe, "(setting: multipath.conf multipaths section)");
set_prio(conf->multipath_dir, conf->overrides, "(setting: multipath.conf overrides section)");
set_prio(conf->multipath_dir, pp->hwe, "(setting: array configuration)");
set_prio(conf->multipath_dir, conf, "(setting: multipath.conf defaults/devices section)");
prio_get(conf->multipath_dir, p, DEFAULT_PRIO, DEFAULT_PRIO_ARGS);
origin = "(setting: multipath internal)";
out:
/*
* fetch tpgs mode for alua, if its not already obtained
*/
if (!strncmp(prio_name(p), PRIO_ALUA, PRIO_NAME_LEN)) {
int tpgs = 0;
unsigned int timeout = conf->checker_timeout;
if(!pp->tpgs &&
(tpgs = get_target_port_group_support(pp->fd, timeout)) >= 0)
pp->tpgs = tpgs;
}
condlog(3, "%s: prio = %s %s", pp->dev, prio_name(p), origin);
condlog(3, "%s: prio args = \"%s\" %s", pp->dev, prio_args(p), origin);
return 0;
}