Hi users, I'm using CentOS 6.6 as a host, when I start Installing the host to my ovirt-engine webamin, I starting to have this error message in my host1. Nov 27 10:15:32 host1 kernel: device-mapper: table: 253:3: multipath: error getting device Nov 27 10:15:32 host1 kernel: device-mapper: ioctl: error adding target to table Nov 27 10:22:11 host1 multipathd: force queue_without_daemon (operator) Nov 27 10:22:12 host1 multipathd: 360030480190c68001be31b9a1587e30a: ignoring map Nov 27 10:22:12 host1 kernel: device-mapper: table: 253:3: multipath: error getting device Nov 27 10:22:12 host1 kernel: device-mapper: ioctl: error adding target to table Nov 27 10:22:12 host1 kernel: device-mapper: table: 253:3: multipath: error getting device Nov 27 10:22:12 host1 kernel: device-mapper: ioctl: error adding target to table Nov 27 10:22:12 host1 multipathd: 360030480190c68001be3224d189b03e5: ignoring map Nov 27 10:22:12 host1 multipathd: path checkers start up When I try to reboot it it will only stuck on a screen saying. device-mapper: error getting device continuously, how can I fix it? Hope someone can Help me.