[ovirt-users] Can not add data domain via nfs

Hi ALL: have some wrong when add data domain into a data center. I can not add a data domain from web panel. error log on vdsm server: Jan 27 14:49:12 localhost rpc.mountd[3020]: authenticated mount request from 192.168.60.38:730 for /opt/ovirt-node-nfs/data (/opt/ovirt-node-nfs/data) Jan 27 14:49:12 localhost kernel: device-mapper: table: 253:5: multipath: error getting device Jan 27 14:49:12 localhost kernel: device-mapper: ioctl: error adding target to table Jan 27 14:49:12 localhost multipathd: dm-5: remove map (uevent) Jan 27 14:49:12 localhost multipathd: dm-5: remove map (uevent) Jan 27 14:49:13 localhost avahi-daemon[1223]: Received response from host 192.168.61.145 with invalid source port 40237 on interface 'ovirtmgmt.0' Jan 27 14:49:14 localhost kernel: device-mapper: table: 253:5: multipath: error getting device Jan 27 14:49:14 localhost kernel: device-mapper: ioctl: error adding target to table Jan 27 14:49:14 localhost multipathd: dm-5: remove map (uevent) Jan 27 14:49:14 localhost multipathd: dm-5: remove map (uevent) [root@localhost etc]# cat multipath.conf # RHEV REVISION 1.1 defaults { polling_interval 5 getuid_callout "/usr/lib/udev/scsi_id --whitelisted --replace-whitespace --device=/dev/%n" no_path_retry fail user_friendly_names no flush_on_last_del yes fast_io_fail_tmo 5 dev_loss_tmo 30 max_fds 4096 } devices { device { vendor "HITACHI" product "DF.*" getuid_callout "/usr/lib/udev/scsi_id --whitelisted --replace-whitespace --device=/dev/%n" } device { vendor "COMPELNT" product "Compellent Vol" no_path_retry fail } device { # multipath.conf.default vendor "DGC" product ".*" product_blacklist "LUNZ" path_grouping_policy "group_by_prio" path_checker "emc_clariion" hardware_handler "1 emc" prio "emc" failback immediate rr_weight "uniform" # vdsm required configuration getuid_callout "/usr/lib/udev/scsi_id --whitelisted --replace-whitespace --device=/dev/%n" features "0" no_path_retry fail } someone can tell me how to fix this issue, thanks