RHEL6配置multipath多路径软件连存储    RHEL6与5在多路径的配置上有一些小区别。scsi_id命令有些参数不再支持。在RHEL 6中获取磁盘的wwid可以通过–whitelist参数获取:[root@db1 ~]# scsi_id --whitelist /dev/sdg 360060160a2212f00f8139df761ece111   www.2cto.com   可以通过一条shell命令，来获取系统所有磁盘的wwid： # for i in `cat /proc/partitions ¦ awk {'print $4'} ¦grep sd`; do echo "### $i: `scsi_id --whitelist /dev/$i`"; done 在RHEL 5中，可以通过如下方式获取磁盘wwid： # for i in `cat /proc/partitions ¦ awk {'print $4'} ¦grep sd`; do echo "### $i: `scsi_id -g -u -s /block/$i`"; done 另外，RHEL 6中，多路径配置文件也出现变化：   # multipath.conf written by anaconda defaults { user_friendly_names yes } blacklist { devnode "^(ramrawloopfdmddm-srscdst)[0-9]*" devnode "^hd[a-z]" devnode "^dcssblk[0-9]*" device { vendor "DGC" product "LUNZ" } device { vendor "IBM" product "S/390.*" } # don't count normal SATA devices as multipaths device { vendor "ATA" } # don't count 3ware devices as multipaths device { vendor "3ware" } device { vendor "AMCC" } # nor highpoint devices device { vendor "HPT" } wwid "20080930-1" wwid "20080930-1" device { vendor Cisco product Virtual_CD_DVD } wwid "*" //其实可以注释这项，这样就不需要单独填写blacklist_exceptions } blacklist_exceptions { //排除在黑名单之外的wwid wwid "360060160a2212f00a67e0b91f2dbe111" wwid "360060160a2212f0044a0fc6ef5eae111" } multipaths { multipath { uid 0 //磁盘读所属用户uid gid 0 //磁盘所属组gid wwid "360060160a2212f00a67e0b91f2dbe111" //wwid号 mode 0600 //磁盘读写权限 } multipath { wwid "360060160a2212f0044a0fc6ef5eae111" alias data //别名 } ... ... //还可以根据实际情况，配置其它磁盘的别名、uid、gid、mode etc... }   www.2cto.com     配置完了之后，重启multipathd服务，之后通过multipath -ll查看经过多路径软件绑定后的磁盘。 注意，如果要对磁盘进行格式化，请采用/dev/mapper/[alias]这类设备名进行fdisk。