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:[roo
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:
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# multipath.conf written by anaconda
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defaults {
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user_friendly_names yes
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}
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blacklist {
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devnode "^(ramrawloopfdmddm-srscdst)[0-9]*"
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devnode "^hd[a-z]"
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devnode "^dcssblk[0-9]*"
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device {
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vendor "DGC"
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product "LUNZ"
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}
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device {
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vendor "IBM"
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product "S/390.*"
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}
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# don't count normal SATA devices as multipaths
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device {
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vendor "ATA"
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}
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# don't count 3ware devices as multipaths
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device {
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vendor "3ware"
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}
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device {
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vendor "AMCC"
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}
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# nor highpoint devices
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device {
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vendor "HPT"
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}
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wwid "20080930-1"
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wwid "20080930-1"
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device {
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vendor Cisco
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product Virtual_CD_DVD
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}
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wwid "*" //其实可以注释这项,这样就不需要单独填写blacklist_exceptions
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}
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blacklist_exceptions { //排除在黑名单之外的wwid
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wwid "360060160a2212f00a67e0b91f2dbe111"
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wwid "360060160a2212f0044a0fc6ef5eae111"
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}
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multipaths {
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multipath {
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uid 0 //磁盘读所属用户uid
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gid 0 //磁盘所属组gid
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wwid "360060160a2212f00a67e0b91f2dbe111" //wwid号
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mode 0600 //磁盘读写权限
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}
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multipath {
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wwid "360060160a2212f0044a0fc6ef5eae111"
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alias data //别名
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}
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... ... //还可以根据实际情况,配置其它磁盘的别名、uid、gid、mode etc...
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}
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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