iSCSIRHEL4,RHEL5,RHEL6SLES10,SLES11chl0主機(jī)通道和服務(wù)器上的ech0網(wǎng)口直連，chl1ech1直連，將磁盤陣列上的同一個(gè)Partition分別映射給chl0chl1主機(jī)通道。chlchlethethRHELIP默認(rèn)安裝完成系統(tǒng)后默認(rèn)只配置了網(wǎng)卡eth0IP地址，須配置其它和盤陣主機(jī)端口直連的網(wǎng)卡的IP地址。配置網(wǎng)卡eth1IPviifcfg-eth1rpm–qa|grepcat如果只有“InitiatorName=”則使用如下命令添加IQN。修改配置文件vi/etc/iscsi.conf如果要?jiǎng)h除節(jié)點(diǎn)，就將相應(yīng)的“DiscoveryAddress=IP:3260iSCSI服iscsiserviceiscsistop#關(guān)閉iscsi服務(wù)serviceiscsirestart#重啟iscsi服務(wù)defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#啟動(dòng)multipathd服務(wù)servicemultipathdstop#關(guān)閉multipathd服務(wù)servicemultipathdrestart#重啟multipathd服務(wù)#–# multipath–F清除多路徑設(shè)備緩存multipath–v3如果還不能看見(jiàn)，就重啟multipatdmkfs.ext3/dev/mapper/mpath2p1 #mpath2p1分區(qū)創(chuàng)建ext3文件系統(tǒng) 針對(duì)iSCSI磁盤陣列，RHEL4默認(rèn)的會(huì)數(shù)據(jù)包，導(dǎo)致性能低下。 #/etc/init.d/iptablesrestart重啟RHELIP默認(rèn)安裝完成系統(tǒng)后默認(rèn)只配置了網(wǎng)卡eth0IP地址，須配置其它和盤陣主機(jī)端口直連的網(wǎng)卡的IP地址。配置網(wǎng)卡eth1IPviifcfg-eth1rpm–qa|grepcatnode.startup=automaticiscsiserviceiscsistart#啟動(dòng)iscsi服務(wù)serviceiscsistop#關(guān)閉iscsi服務(wù)serviceiscsirestart#重啟iscsi服務(wù)#iscsiadmmnodeodeleteTIQNpIP刪除節(jié)點(diǎn)IQN:目標(biāo)端的IQNIP:IPrmrfvar/lib/iscsi/send_targets/*刪除目標(biāo)端serviceiscsistart#啟動(dòng)iscsi服務(wù)::iscsiadmmnodeUall登出所以節(jié)點(diǎn)modprobedm_multipath#dm_multipath加入內(nèi)核編輯device-mapper-multipath配置文件defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#啟動(dòng)multipathd服務(wù)servicemultipathdstop#關(guān)閉multipathd服務(wù)servicemultipathdrestart#重啟multipathd服務(wù)#–# multipath–F清除多路徑設(shè)備緩存multipath–v3如果還不能看見(jiàn)，就重啟multipatd服務(wù)mkfs.ext3/dev/mapper/mpath3p1 #mpath3p1分區(qū)創(chuàng)建ext3文件系統(tǒng) 針對(duì)iSCSI磁盤陣列，RHEL5默認(rèn)的會(huì)數(shù)據(jù)包，導(dǎo)致性能低下。 #/etc/init.d/iptablesrestart重啟RHELIP默認(rèn)安裝完成系統(tǒng)后默認(rèn)只配置了網(wǎng)卡eth0IP地址，須配置其它和盤陣主機(jī)端口直連的網(wǎng)卡的IP地址。配置網(wǎng)卡eth1IPviifcfg-eth1安裝系統(tǒng)時(shí)可以選擇安裝iSCSIStorage 果安裝系統(tǒng)時(shí)沒(méi)有安裝iscsi-initiator-utils包，在安裝盤里找到后安裝。rpm–qa|grepcatechoInitiatorName=`iscsi-iname`etciscsi/initiatorname.iscsinode.startup=automaticiscsi#iscsiadmmnode-odeleteTIQNpIP刪除節(jié)點(diǎn)IQN:目標(biāo)端的IQN號(hào)IP:IP地址rmrf/var/lib/iscsi/send_targets/*刪除目標(biāo)端serviceiscsistart#啟動(dòng)iscsi服務(wù)::iscsiadmmnodeUall登出所以節(jié)點(diǎn)modprobedm_multipath#dm_multipath加入內(nèi)核編輯device-mapper-multipath配置文件defaults{udev_dirpath_grou_multibusfailbackimmediateno_path_retryfailuser_friendly_namesyes}servicemultipathdstart#啟動(dòng)multipathd服務(wù)servicemultipathdstop#關(guān)閉multipathd服務(wù)servicemultipathdrestart#重啟multipathd服務(wù)#–# multipath–F清除多路徑設(shè)備緩存multipath–v3如果還不能看見(jiàn)，就重啟multipatd服務(wù)mkfs.ext3/dev/mapper/mpathdp1 #mpathdp1分區(qū)創(chuàng)建ext3文件系統(tǒng) 針對(duì)iSCSI磁盤陣列，RHEL6默認(rèn)的會(huì)數(shù)據(jù)包，導(dǎo)致性能低下。 #/etc/init.d/iptablesrestart重啟SLESIP的IP地址。catcdrpm–qa|grepcatnode.startup=automaticopen-iscsi#iscsiadmmnodeodeleteTIQNpIP刪除節(jié)點(diǎn)IQN:目標(biāo)端的IQNIP:IPrmrf/etc/iscsi/send_targets/*刪除目標(biāo)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#啟動(dòng)multipathd服務(wù)servicemultipathdstop#關(guān)閉multipathd服務(wù)servicemultipathdrestart#重啟multipathd服務(wù)#–# multipath–F清除多路徑設(shè)備緩存multipath–v3如果還不能看見(jiàn)，就重啟multipatd/ 關(guān)閉yastSystem->SystemServicesRunlevel)SuSEfirewall2_setupEnabled值是Yes，就按Alt+D，禁用；如果Enabled值是No，就檢查狀態(tài)SLESIP安裝完成系統(tǒng)后默認(rèn)只配置了網(wǎng)卡eth0IP地址，須配置其它和盤陣主機(jī)端口直連的網(wǎng)卡的IP地址。配置網(wǎng)卡eth1IP/#rpm–qa|grepcatnode.startup=automaticopen-iscsi#iscsiadmmnodeodeleteTIQNpIP刪除節(jié)點(diǎn)IQN:目標(biāo)端的IQNIP:IPrmrf/etc/iscsi/send_targets/*刪除目標(biāo)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#啟動(dòng)multipathd服務(wù)servicemultipathdstop#關(guān)閉multipathd服務(wù)servicemultipathdrestart#重啟multipathd服務(wù)