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iSCSI Initiator (Ubuntu)
2016/04/23 |
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Configure iSCSI Initiator on Ubuntu.
This example is based on the environment below.
+----------------------+ | +----------------------+ | [ iSCSI Target ] |10.0.0.30 | 10.0.0.31| [ iSCSI Initiator ] | | dlp.srv.world +----------+----------+ www.srv.world | | | | | +----------------------+ +----------------------+ |
| [1] | Configure iSCSI Initiator. |
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root@www:~#
apt-get -y install open-iscsi
root@www:~#
vi /etc/iscsi/initiatorname.iscsi # change to the same IQN you set on the iSCSI target server InitiatorName= iqn.2016-04.world.srv:www.srv.world
root@www:~#
vi /etc/iscsi/iscsid.conf # line 53: uncomment node.session.auth.authmethod = CHAP # line 57,58: uncomment and specify the username and password you set on the iSCSI target server node.session.auth.username = username node.session.auth.password = password
root@www:~#
systemctl restart iscsid open-iscsi
# discover target root@www:~# iscsiadm -m discovery -t sendtargets -p 10.0.0.30 10.0.0.30:3260,1 iqn.2016-04.world.srv:storage.target00 # confirm status after discovery root@www:~# iscsiadm -m node -o show # BEGIN RECORD 2.0-873 node.name = iqn.2016-04.world.srv:storage.target00 node.tpgt = 1 node.startup = manual node.leading_login = No ... ... ... node.conn[0].iscsi.IFMarker = No node.conn[0].iscsi.OFMarker = No # END RECORD # login to the target root@www:~# iscsiadm -m node --login Logging in to [iface: default, target: iqn.2016-04.world.srv:storage.target00, portal: 10.0.0.30,3260] (multiple) Login to [iface: default, target: iqn.2016-04.world.srv:storage.target00, portal: 10.0.0.30,3260] successful. # confirm the established session root@www:~# iscsiadm -m session -o show tcp: [2] 10.0.0.30:3260,1 iqn.2016-04.world.srv:storage.target00 (non-flash) # confirm the partitions root@www:~# cat /proc/partitions major minor #blocks name 1 0 65536 ram0 1 1 65536 ram1 1 2 65536 ram2 ..... ..... 252 0 26759168 dm-0 252 1 4194304 dm-1 8 0 10485760 sdb # added new device provided from the target server as "sdb"
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| [2] | After setting iSCSI devide, configure on Initiator to use it like follwos. |
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# create label root@www:~# parted --script /dev/sdb "mklabel msdos" # create partiton root@www:~# parted --script /dev/sdb "mkpart primary 0% 100%" # format with ext4 root@www:~# mkfs.ext4 /dev/sdb1
mke2fs 1.42.13 (17-May-2015)
Creating filesystem with 2619392 4k blocks and 655360 inodes
Filesystem UUID: a344ca52-73a7-4b47-8b2c-f7381be38b76
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
# mount root@www:~# mount /dev/sdb1 /mnt root@www:~# df -hT udev devtmpfs 2.0G 0 2.0G 0% /dev tmpfs tmpfs 396M 5.6M 390M 2% /run /dev/mapper/ubuntu--vg-root ext4 25G 1.4G 23G 6% / tmpfs tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup /dev/sda1 ext2 472M 55M 393M 13% /boot tmpfs tmpfs 100K 0 100K 0% /run/lxcfs/controllers tmpfs tmpfs 396M 0 396M 0% /run/user/0 /dev/sdb1 ext4 9.8G 23M 9.2G 1% /mnt |