启动multipath
[root@db11g ~]# modprobe dm-multipath [root@db11g ~]# modprobe dm-round-robin [root@db11g ~]# chkconfig multipathd start [root@db11g ~]# chkconfig multipathd on [root@db11g ~]# /etc/init.d/multipathd start Starting multipathd daemon: [ OK ] [root@db11g ~]# ps -ef|grep multipathd root 3084 1 0 13:16 00:00:00 /sbin/multipathd root 3186 2877 0 13:16 pts/0 00:00:00 grep multipathd [root@db11g ~]# multipath -F [root@db11g ~]# multipath -v2 Jan 15 13:17:40 | SATA_VBOX_HARDDISK_VBa64c2685-cc2f3dd0_: ignoring map create: datadisk (SATA_VBOX_HARDDISK_VB3c0bb909-10aab3a0_) undef ATA,VBOX HARDDISK size=16G features='0' hwhandler='0' wp=undef `-+- policy='round-robin 0' prio=1 status=undef `- 1:0:0:0 sdb 8:16 undef ready running create: fradisk (SATA_VBOX_HARDDISK_VB3edd7dc1-fd831bf4_) undef ATA,VBOX HARDDISK size=10G features='0' hwhandler='0' wp=undef `-+- policy='round-robin 0' prio=1 status=undef `- 2:0:0:0 sdc 8:32 undef ready running [root@db11g ~]# [root@db11g ~]# multipath -ll fradisk (SATA_VBOX_HARDDISK_VB3edd7dc1-fd831bf4_) dm-3 ATA,VBOX HARDDISK size=10G features='0' hwhandler='0' wp=rw `-+- policy='round-robin 0' prio=1 status=active `- 2:0:0:0 sdc 8:32 active ready running datadisk (SATA_VBOX_HARDDISK_VB3c0bb909-10aab3a0_) dm-2 ATA,VBOX HARDDISK size=16G features='0' hwhandler='0' wp=rw `-+- policy='round-robin 0' prio=1 status=active `- 1:0:0:0 sdb 8:16 active ready running
[root@db11g ~]# ll /dev/mapper/*disk brw-rw---- 1 grid asmadmin 252, 2 Jan 15 13:17 /dev/mapper/datadisk brw-rw---- 1 grid asmadmin 252, 3 Jan 15 13:17 /dev/mapper/fradisk
