int
get_alua_info(int fd)
{
int rc;
int tpg;
rc = get_target_port_group_support(fd);
if (rc < 0)
return -ALUA_PRIO_TPGS_FAILED;
if (rc == TPGS_NONE)
return -ALUA_PRIO_NOT_SUPPORTED;
tpg = get_target_port_group(fd);
if (tpg < 0)
return -ALUA_PRIO_RTPG_FAILED;
condlog(3, "reported target port group is %i", tpg);
rc = get_asymmetric_access_state(fd, tpg);
if (rc < 0)
return -ALUA_PRIO_GETAAS_FAILED;
condlog(3, "aas = %02x [%s]%s", rc, aas_print_string(rc),
(rc & 0x80) ? " [preferred]" : "");
return rc;
}
void
detect_prio(struct config *conf, struct path * pp)
{
int ret;
struct prio *p = &pp->prio;
int tpgs = 0;
unsigned int timeout = conf->checker_timeout;
char buff[512];
char *default_prio = PRIO_ALUA;
if ((tpgs = get_target_port_group_support(pp->fd, timeout)) <= 0)
return;
pp->tpgs = tpgs;
ret = get_target_port_group(pp, timeout);
if (ret < 0)
return;
if (get_asymmetric_access_state(pp->fd, ret, timeout) < 0)
return;
if (sysfs_get_asymmetric_access_state(pp, buff, 512) >= 0)
default_prio = PRIO_SYSFS;
prio_get(conf->multipath_dir, p, default_prio, DEFAULT_PRIO_ARGS);
}