服务器端设置 yum install -y iscsi-initiator-utils //安装iscsi组件 systemctl start iscsi //启动iscsi服务 systemctl enable iscsi //开机启动iscsi yum install -y device-mapper-multipath //安装多路径 扫描,连接iscsi执行命令扫描存储iscis的iqn,后面是存储iscsi服务地址 [root@RACN5 iscsi]# iscsiadm -m discovery -t sendtargets -p 172.18.2.13 172.18.2.13:3260,1 iqn.1992-04.com.emc:cx.cetv3172500019.a0 172.18.2.14:3260,2 iqn.1992-04.com.emc:cx.cetv3172500019.b0 [root@RACN5 iscsi]# iscsiadm -m discovery -t sendtargets -p 172.18.2.14 172.18.2.14:3260,2 iqn.1992-04.com.emc:cx.cetv3172500019.b0 172.18.2.13:3260,1 iqn.1992-04.com.emc:cx.cetv3172500019.a0 登入存储 [root@RACN5 iscsi]# iscsiadm -m node –T iqn.1992-04.com.emc:cx.cetv3172500019.a0 -p 172.18.2.13 -l Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.cetv3172500019.a0, portal: 172.18.2.13,3260] (multiple) Login to [iface: default, target: iqn.1992-04.com.emc:cx.cetv3172500019.a0, portal: 172.18.2.13,3260] successful. [root@RACN5 iscsi]# iscsiadm -m node –T iqn.1992-04.com.emc:cx.cetv3172500019.b0 -p 172.18.2.14 -l Logging in to [iface: default, target: iqn.1992-04.com.emc:cx.cetv3172500019.b0, portal: 172.18.2.14,3260] (multiple) Login to [iface: default, target: iqn.1992-04.com.emc:cx.cetv3172500019.b0, portal: 172.18.2.14,3260] successful. 开机自动登入存储执行 [root@RACN5 iscsi]# iscsiadm -m node –T iqn.1992-04.com.emc:cx.cetv3172500019.a0 -p 172.18.2.13 --op update -n node.startup -v automatic [root@RACN5 iscsi]# iscsiadm -m node –T iqn.1992-04.com.emc:cx.cetv3172500019.b0 -p 172.18.2.14 --op update -n node.startup -v automatic 查看所有iscsi连接 [root@RACN5 iscsi]# iscsiadm -m session tcp: [1] 172.18.2.13:3260,1 iqn.1992-04.com.emc:cx.cetv3172500019.a0 (non-flash) tcp: [2] 172.18.2.14:3260,2 iqn.1992-04.com.emc:cx.cetv3172500019.b0 (non-flash) 查看wwid,供后续多路径使用 [root@RACN5 iscsi]# ll /dev/disk/by-id/ lrwxrwxrwx. 1 root root 10 3月 25 14:56 dm-name-ol-root -> ../../dm-0 lrwxrwxrwx. 1 root root 10 3月 25 14:56 dm-name-ol-swap -> ../../dm-1 lrwxrwxrwx. 1 root root 10 3月 25 14:56 dm-uuid-LVM-dsCnihjL3kUryfSskkeLYpoUw0O wcu9SjmX8wjdE0XDgrrR2MWDjmx2Wt29A2XOK -> ../../dm-1 lrwxrwxrwx. 1 root root 10 3月 25 14:56 dm-uuid-LVM-dsCnihjL3kUryfSskkeLYpoUw0O wcu9StthZ50cwstp9jZ6w6Y1uI3vNSyinID4P -> ../../dm-0 lrwxrwxrwx. 1 root root 10 3月 25 14:56 lvm-pv-uuid-W0MZu8-7cFn-Pq6K-euRk-UOFE- jmYg-miEqN2 -> ../../sda3 lrwxrwxrwx. 1 root root 9 3月 25 14:56 scsi-14d534654202020207305e343770354469 4957d7ced624a7d -> ../../sr0 lrwxrwxrwx. 1 root root 9 3月 25 14:56 scsi-36002248074fd717f331aa0dd6c5f756a -> ../../sda lrwxrwxrwx. 1 root root 10 3月 25 14:56 scsi-36002248074fd717f331aa0dd6c5f756a- part1 -> ../../sda1 lrwxrwxrwx. 1 root root 10 3月 25 14:56 scsi-36002248074fd717f331aa0dd6c5f756a- part2 -> ../../sda2 lrwxrwxrwx. 1 root root 10 3月 25 14:56 scsi-36002248074fd717f331aa0dd6c5f756a- part3 -> ../../sda3 lrwxrwxrwx. 1 root root 9 4月 8 13:44 scsi-3600601604a50450006b05a6088c64e01 -> ../../sdi lrwxrwxrwx. 1 root root 9 4月 8 13:44 scsi-3600601604a50450020636160450a2796 -> ../../sdg lrwxrwxrwx. 1 root root 9 4月 8 13:44 scsi-3600601604a50450079626160b2495a82 -> ../../sdh lrwxrwxrwx. 1 root root 9 4月 8 13:44 scsi-3600601604a504500e362616008e8704a -> ../../sdf lrwxrwxrwx. 1 root root 9 3月 25 14:56 wwn-0x6002248074fd717f331aa0dd6c5f756a -> ../../sda lrwxrwxrwx. 1 root root 10 3月 25 14:56 wwn-0x6002248074fd717f331aa0dd6c5f756a- part1 -> ../../sda1 lrwxrwxrwx. 1 root root 10 3月 25 14:56 wwn-0x6002248074fd717f331aa0dd6c5f756a- part2 -> ../../sda2 lrwxrwxrwx. 1 root root 10 3月 25 14:56 wwn-0x6002248074fd717f331aa0dd6c5f756a- part3 -> ../../sda3 lrwxrwxrwx. 1 root root 9 4月 8 13:44 wwn-0x600601604a50450006b05a6088c64e01 -> ../../sdi lrwxrwxrwx. 1 root root 9 4月 8 13:44 wwn-0x600601604a50450020636160450a2796 -> ../../sdg lrwxrwxrwx. 1 root root 9 4月 8 13:44 wwn-0x600601604a50450079626160b2495a82 -> ../../sdh lrwxrwxrwx. 1 root root 9 4月 8 13:44 wwn-0x600601604a504500e362616008e8704a -> ../../sdf 多路径配置: [root@RACN5 /]# vi /etc/multipath.conf multipath { wwid 3600601604a50450006b05a6088c64e01 alias emc_iscsi_testmesdb_testlun02 } multipath { wwid 3600601604a50450079626160b2495a82 alias emc_iscsi_testmesdb_vote1 } multipath { wwid 3600601604a504500e362616008e8704a alias emc_iscsi_testmesdb_vote2 } multipath { wwid 3600601604a50450020636160450a2796 alias emc_iscsi_testmesdb_vote3 } }
[root@RACN5 /]# systemctl restart multipathd.service [root@RACN5 /]# systemctl status multipathd.service ● multipathd.service - Device-Mapper Multipath Device Controller Loaded: loaded (/usr/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled) Active: active (running) since 五 2022-04-08 13:53:39 CST; 8s ago [root@RACN5 /]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdf 8:80 0 1G 0 disk └─emc_iscsi_testmesdb_vote2 252:2 0 1G 0 mpath sdd 8:48 0 1G 0 disk └─emc_iscsi_testmesdb_vote1 252:4 0 1G 0 mpath sdb 8:16 0 1G 0 disk └─emc_iscsi_testmesdb_vote2 252:2 0 1G 0 mpath sdi 8:128 0 300G 0 disk └─emc_iscsi_testmesdb_testlun02 252:5 0 300G 0 mpath sr0 11:0 1 1024M 0 rom sdg 8:96 0 1G 0 disk └─emc_iscsi_testmesdb_vote3 252:3 0 1G 0 mpath sde 8:64 0 300G 0 disk └─emc_iscsi_testmesdb_testlun02 252:5 0 300G 0 mpath sdc 8:32 0 1G 0 disk └─emc_iscsi_testmesdb_vote3 252:3 0 1G 0 mpath sda 8:0 0 200G 0 disk ├─sda2 8:2 0 1G 0 part /boot ├─sda3 8:3 0 198G 0 part │ ├─ol-swap 252:1 0 8G 0 lvm [SWAP] │ └─ol-root 252:0 0 190G 0 lvm / └─sda1 8:1 0 200M 0 part /boot/efi sdh 8:112 0 1G 0 disk └─emc_iscsi_testmesdb_vote1 252:4 0 1G 0 mpath |