iscsi

 创建RAID10磁盘阵列

[root@localhost ~]# mdadm -Cv /dev/md0 -n 4 -l 10 /dev/sd[b-e]
[root@localhost ~]# mdadm -D /dev/md0

 配置iSCSI服务端

[root@localhost ~]# yum install targetd targetcli
[root@localhost ~]# systemctl restart iscsid
[root@localhost ~]# systemctl enable iscsid

[root@localhost ~]# targetcli
/> ls
o- / ............................................................................ [...]
  o- backstores ................................................................. [...]
  | o- block ..................................................... [Storage Objects: 0]
  | o- fileio .................................................... [Storage Objects: 0]
  | o- pscsi ..................................................... [Storage Objects: 0]
  | o- ramdisk ................................................... [Storage Objects: 0]
  o- iscsi ............................................................... [Targets: 0]
  o- loopback ............................................................ [Targets: 0]
/> cd /backstores/block
/backstores/block> create disk0 /dev/md0
Created block storage object disk0 using /dev/md0.
/> cd iscsi
/iscsi> create
Created target iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c.
Created TPG 1.
/iscsi> cd iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c
/iscsi/iqn.20....72b4c8640c0c> ls
o- iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c .............. [TPGs: 1]
  o- tpg1 ...................................................... [no-gen-acls, no-auth]
    o- acls ................................................................. [ACLs: 0]
    o- luns ................................................................. [LUNs: 0]
    o- portals ........................................................... [Portals: 0]
/iscsi/iqn.20....72b4c8640c0c> cd tpg1/luns
/iscsi/iqn.20...c0c/tpg1/luns> create /backstores/block/disk0
Created LUN 0.
/iscsi/iqn.20...c0c/tpg1/luns> cd ..
/iscsi/iqn.20...c8640c0c/tpg1> ls
o- tpg1 ........................................................ [no-gen-acls, no-auth]
  o- acls ................................................................... [ACLs: 0]
  o- luns ................................................................... [LUNs: 1]
  | o- lun0 .................................................. [block/disk0 (/dev/md0)]
  o- portals ............................................................. [Portals: 0]
/iscsi/iqn.20...c8640c0c/tpg1> cd portals
/iscsi/iqn.20.../tpg1/portals> create 192.168.10.10
Using default IP port 3260
Created network portal 192.168.10.10:3260.
/iscsi/iqn.20.../tpg1/portals> cd ..
/iscsi/iqn.20...c8640c0c/tpg1> cd acls
/iscsi/iqn.20...c0c/tpg1/acls> create iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c:client
Created Node ACL for iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c:client
Created mapped LUN 0.
/iscsi/iqn.20...c0c/tpg1/acls> exit
Global pref auto_save_on_exit=true
Last 10 configs saved in /etc/target/backup.
Configuration saved to /etc/target/saveconfig.json

[root@localhost ~]# iptables -F
[root@localhost~]# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]

配置Linux客户端

[root@localhost ~]# ls -l /dev/sd*
brw-rw----. 1 root disk 8, 0 8月  13 2019 /dev/sda
brw-rw----. 1 root disk 8, 1 8月  13 2019 /dev/sda1
brw-rw----. 1 root disk 8, 2 8月  13 2019 /dev/sda2

[root@localhost ~]# vim /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c:client

[root@localhost ~]# systemctl restart iscsid
[root@localhost ~]# systemctl enable iscsid

[root@localhost ~]# iscsiadm -m discovery -t st -p 192.168.10.10
192.168.10.10:3260,1 iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c

[root@localhost ~]# iscsiadm -m node -T iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c -p 192.168.10.10 --login

[root@localhost ~]# ls -l /dev/sd*
brw-rw----. 1 root disk 8,  0 8月  13 2019 /dev/sda
brw-rw----. 1 root disk 8,  1 8月  13 2019 /dev/sda1
brw-rw----. 1 root disk 8,  2 8月  13 2019 /dev/sda2
brw-rw----. 1 root disk 8, 16 8月  12 17:08 /dev/sdb

[root@localhost ~]# iscsiadm -m node -T iqn.2003-01.org.linux-iscsi.localhost.x8664:sn.72b4c8640c0c -u

[root@localhost ~]# ls -l /dev/sd*
brw-rw----. 1 root disk 8, 0 8月  13 2019 /dev/sda
brw-rw----. 1 root disk 8, 1 8月  13 2019 /dev/sda1
brw-rw----. 1 root disk 8, 2 8月  13 2019 /dev/sda2