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
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...
- }
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。
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