配置initiator端
- 1. 在initiator主机上安装initiator软件
# yum -y install iscsi-initiator-utils
- 2. 在initiator主机上发现并连接target存储
# iscsiadm -m discovery -t sendtargets -p192.168.136.101
#发现的target服务,信息会写入/var/lib/iscsi 目录下
# tree /var/lib/iscsi/ #查看target信息
- 3. 启动iscsid 服务
# /etc/init.d/iscsid start #先启动iscsid 服务
# /etc/init.d/iscsi start #再启动iscsi服务 该服务是根据iscsid服务信息/var/lib/iscsi/ 来识别设备的
- 4. 在initiator主机上检查分配给iscsi target设备的设备文件名
# lsblk
# tree /var/lib/iscsi/
检查iscsi磁盘配置, 以及卸载和登录scsi设备
# lsblk
# tree /var/lib/iscsi/
# iscsiadm -m node -Tiqn.2017-03.centos-i1:target1 –u #卸载,这里的案例是双路径
Logging out of session[sid: 1, target: iqn.2017-03.centos-i1:target1, portal: 192.168.20.101,3260]
Logging out of session[sid: 2, target: iqn.2017-03.centos-i1:target1, portal: 192.168.136.101,3260]
Logout of [sid: 1, target:iqn.2017-03.centos-i1:target1, portal: 192.168.20.101,3260] successful.
Logout of [sid: 2, target:iqn.2017-03.centos-i1:target1, portal: 192.168.136.101,3260] successful.
# lsblk #验证设备是否logout
# iscsiadm -m node -Tiqn.2017-03.centos-i1:target1 –l #重新登录,这里的案例是双路径
Logging in to [iface:default, target: iqn.2017-03.centos-i1:target1, portal: 192.168.20.101,3260](multiple)
Logging in to [iface:default, target: iqn.2017-03.centos-i1:target1, portal: 192.168.136.101,3260](multiple)
Login to [iface: default,target: iqn.2017-03.centos-i1:target1, portal: 192.168.20.101,3260] successful.
Login to [iface: default,target: iqn.2017-03.centos-i1:target1, portal: 192.168.136.101,3260]successful.
使用iscsi设备,并做写入操作测试
- 1. 磁盘分区(方法二选一)
# fdisk /dev/sdb
# parted /dev/sdb
- 2. 建文件系统并使用
# mkfs.ext4 /dev/sdb1
# mkdir /iscsi #挂载分区 到新建目录/iscsi
# mount /dev/sdb1 /iscsi/
# cp /home/lb/fio* /iscsi
在实验过程中,遇到如果在target端做过sdb分区,initiator看不到分区的情况。需要按照target端的参数重新分区,才看到分区里的数据。