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Configure iSCSI Initiator
2017/12/18 |
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Configure iSCSI Initiator.
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 ~]#
dnf -y install iscsi-initiator-utils
[root@www ~]#
vi /etc/iscsi/initiatorname.iscsi # change to the same IQN you set on the iSCSI target server InitiatorName= iqn.2017-12.world.srv:www.srv.world
[root@www ~]#
vi /etc/iscsi/iscsid.conf # line 57: uncomment node.session.auth.authmethod = CHAP # line 61,62: uncomment and specify the username and password you set on the iSCSI target server node.session.auth.username = username node.session.auth.password = password
# discover target [root@www ~]# iscsiadm -m discovery -t sendtargets -p 10.0.0.30 [ 1089.257137] Loading iSCSI transport class v2.0-870. [ 1089.307872] iscsi: registered transport (tcp) 10.0.0.30:3260,1 iqn.2017-12.world.srv:storage.target01 # confirm status after discovery [root@www ~]# iscsiadm -m node -o show # BEGIN RECORD 6.2.0.874 node.name = iqn.2017-12.world.srv:storage.target01 node.tpgt = 1 node.startup = automatic 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.2017-12.world.srv:storage.target01, portal: 10.0.0.30,3260] (multiple) [ 1137.031480] scsi host2: iSCSI Initiator over TCP/IP [ 1137.043395] scsi 2:0:0:0: Direct-Access LIO-ORG disk01 4.0 PQ: 0 ANSI: 5 [ 1137.049994] sd 2:0:0:0: Attached scsi generic sg0 type 0 Login to [iface: default, target: iqn.2017-12.world.srv:storage.target01, portal: 10.0.0.30,3260] successful. # confirm the established session [root@www ~]# iscsiadm -m session -o show tcp: [1] 10.0.0.30:3260,1 iqn.2017-12.world.srv:storage.target01 (non-flash) # confirm the partitions [root@www ~]# cat /proc/partitions major minor #blocks name 252 0 31457280 sda 252 1 1048576 sda1 252 2 30407680 sda2 253 0 15728640 dm-0 253 1 3145728 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 XFS [root@www ~]# mkfs.xfs -i size=1024 -s size=4096 /dev/sdb1
meta-data=/dev/sda1 isize=1024 agcount=4, agsize=654848 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=0, rmapbt=0, reflink=0
data = bsize=4096 blocks=2619392, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@www ~]# mount /dev/sdb1 /mnt [root@www ~]# df -hT Filesystem Type Size Used Avail Use% Mounted on devtmpfs devtmpfs 2.0G 0 2.0G 0% /dev tmpfs tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs tmpfs 2.0G 868K 2.0G 1% /run tmpfs tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup /dev/mapper/fedora-root xfs 15G 1.5G 14G 10% / tmpfs tmpfs 2.0G 4.0K 2.0G 1% /tmp /dev/vda1 ext4 976M 149M 761M 17% /boot tmpfs tmpfs 396M 0 396M 0% /run/user/0 /dev/sdb1 xfs 10G 38M 10G 1% /mnt |