配置initiator端
1. 在initiator主機上安裝initiator軟件
# yum -y install iscsi-initiator-utils
2. 在initiator主機上發現並連接target存儲
# iscsiadm -m discovery -t sendtargets -p192.168.136.101
#發現的target服務,信息會寫入/var/lib/iscsi 目錄下
# tree /var/lib/iscsi/ #查看target信息
3. 啓動iscsid 服務
# /etc/init.d/iscsid start #先啓動iscsid 服務
# /etc/init.d/iscsi start #再啓動iscsi服務 該服務是根據iscsid服務信息/var/lib/iscsi/ 來識別設備的
4. 在initiator主機上檢查分配給iscsi target設備的設備文件名
# lsblk
# tree /var/lib/iscsi/
檢查iscsi磁盤配置, 以及卸載和登錄scsi設備
# lsblk
# tree /var/lib/iscsi/
# iscsiadm -m node -Tiqn.2017-03.centos-i1:target1 –u #卸載,這裏的案例是雙路徑
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 #驗證設備是否logout
# iscsiadm -m node -Tiqn.2017-03.centos-i1:target1 –l #重新登錄,這裏的案例是雙路徑
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設備,並做寫入操作測試
1. 磁盤分區(方法二選一)
# fdisk /dev/sdb
# parted /dev/sdb
2. 建文件系統並使用
# mkfs.ext4 /dev/sdb1
# mkdir /iscsi #掛載分區 到新建目錄/iscsi
# mount /dev/sdb1 /iscsi/
# cp /home/lb/fio* /iscsi
在實驗過程中,遇到如果在target端做過sdb分區,initiator看不到分區的情況。需要按照target端的參數重新分區,纔看到分區裏的數據。