磁盘阵列ess操作手册device mapper multipath

iSCSIRHEL4,RHEL5,RHEL6SLES10,SLES11chl0主机通道和服务器上的ech0网口直连，chl1ech1直连，将磁盘阵列上的同一个Partition分别映射给chl0chl1主机通道。chlchlethethRHELIP默认安装完成系统后默认只配置了网卡eth0IP地址，须配置其它和盘阵主机端口直连的网卡的IP地址。配置网卡eth1IPviifcfg-eth1rpm–qa|grepcat如果只有“InitiatorName=”则使用如下命令添加IQN。修改配置文件vi/etc/iscsi.conf如果要删除节点，就将相应的“DiscoveryAddress=IP:3260iSCSI服iscsiserviceiscsistop#关闭iscsi服务serviceiscsirestart#重启iscsi服务defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#启动multipathd服务servicemultipathdstop#关闭multipathd服务servicemultipathdrestart#重启multipathd服务#–# multipath–F清除多路径设备缓存multipath–v3如果还不能看见，就重启multipatdmkfs.ext3/dev/mapper/mpath2p1 #mpath2p1分区创建ext3文件系统 针对iSCSI磁盘阵列，RHEL4默认的会数据包，导致性能低下。 #/etc/init.d/iptablesrestart重启RHELIP默认安装完成系统后默认只配置了网卡eth0IP地址，须配置其它和盘阵主机端口直连的网卡的IP地址。配置网卡eth1IPviifcfg-eth1rpm–qa|grepcatnode.startup=automaticiscsiserviceiscsistart#启动iscsi服务serviceiscsistop#关闭iscsi服务serviceiscsirestart#重启iscsi服务#iscsiadmmnodeodeleteTIQNpIP删除节点IQN:目标端的IQNIP:IPrmrfvar/lib/iscsi/send_targets/*删除目标端serviceiscsistart#启动iscsi服务::iscsiadmmnodeUall登出所以节点modprobedm_multipath#dm_multipath加入内核编辑device-mapper-multipath配置文件defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#启动multipathd服务servicemultipathdstop#关闭multipathd服务servicemultipathdrestart#重启multipathd服务#–# multipath–F清除多路径设备缓存multipath–v3如果还不能看见，就重启multipatd服务mkfs.ext3/dev/mapper/mpath3p1 #mpath3p1分区创建ext3文件系统 针对iSCSI磁盘阵列，RHEL5默认的会数据包，导致性能低下。 #/etc/init.d/iptablesrestart重启RHELIP默认安装完成系统后默认只配置了网卡eth0IP地址，须配置其它和盘阵主机端口直连的网卡的IP地址。配置网卡eth1IPviifcfg-eth1安装系统时可以选择安装iSCSIStorage 果安装系统时没有安装iscsi-initiator-utils包，在安装盘里找到后安装。rpm–qa|grepcatechoInitiatorName=`iscsi-iname`etciscsi/initiatorname.iscsinode.startup=automaticiscsi#iscsiadmmnode-odeleteTIQNpIP删除节点IQN:目标端的IQN号IP:IP地址rmrf/var/lib/iscsi/send_targets/*删除目标端serviceiscsistart#启动iscsi服务::iscsiadmmnodeUall登出所以节点modprobedm_multipath#dm_multipath加入内核编辑device-mapper-multipath配置文件defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#启动multipathd服务servicemultipathdstop#关闭multipathd服务servicemultipathdrestart#重启multipathd服务#–# multipath–F清除多路径设备缓存multipath–v3如果还不能看见，就重启multipatd服务mkfs.ext3/dev/mapper/mpathdp1 #mpathdp1分区创建ext3文件系统 针对iSCSI磁盘阵列，RHEL6默认的会数据包，导致性能低下。 #/etc/init.d/iptablesrestart重启SLESIP的IP地址。catcdrpm–qa|grepcatnode.startup=automaticopen-iscsi#iscsiadmmnodeodeleteTIQNpIP删除节点IQN:目标端的IQNIP:IPrmrf/etc/iscsi/send_targets/*删除目标端::cp/usr/share/doc/packages/multipath-tools/multipath.conf.synthetic/etc/multipath.confvi/etc/multipath.conf{path_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#启动multipathd服务servicemultipathdstop#关闭multipathd服务servicemultipathdrestart#重启multipathd服务#–# multipath–F清除多路径设备缓存multipath–v3如果还不能看见，就重启multipatd/ 关闭yastSystem->SystemServicesRunlevel)SuSEfirewall2_setupEnabled值是Yes，就按Alt+D，禁用；如果Enabled值是No，就检查状态SLESIP安装完成系统后默认只配置了网卡eth0IP地址，须配置其它和盘阵主机端口直连的网卡的IP地址。配置网卡eth1IP/#rpm–qa|grepcatnode.startup=automaticopen-iscsi#iscsiadmmnodeodeleteTIQNpIP删除节点IQN:目标端的IQNIP:IPrmrf/etc/iscsi/send_targets/*删除目标端::#cp/usr/share/doc/packages/multipath-tools/multipath.conf.synthetic/etc/multipath.confvi/etc/multipath.conf{path_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#启动multipathd服务servicemultipathdstop#关闭multipathd服务servicemultipathdrestart#重启multipathd服务