Configure iSCSI Initiator.
This example is based on the environment below.
+----------------------+ | +----------------------+
| [ iSCSI Target ] |10.0.0.30 | 10.0.0.31| [ iSCSI Initiator ] |
| dlp.server.world +----------+----------+ www.server.world |
| | | |
+----------------------+ +----------------------+
| [1] | Configure iSCSI Initiator. |
|
# change to the same IQN you set on the iSCSI target Server
InitiatorName=
iqn.2014-07.world.server:www.server.world
# line 54: uncomment
node.session.auth.authmethod = CHAP
# line 58,59: 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
[ 635.510656] iscsi: registered transport (tcp)
10.0.0.30:3260,1 iqn.2014-07.world.server:storage.target00
# confirm status after discovery
[root@www ~]#
iscsiadm -m node -o show
# BEGIN RECORD 6.2.0.873-21
node.name = iqn.2014-07.world.server:storage.target00
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.2014-07.world.server:storage.target00, portal: 10.0.0.30,3260] (multiple)
[ 708.383308] scsi2 : iSCSI Initiator over TCP/IP
[ 709.393277] scsi 2:0:0:0: Direct-Access LIO-ORG disk01 4.0 PQ: 0 ANSI: 5
[ 709.395709] scsi 2:0:0:0: alua: supports implicit and explicit TPGS
[ 709.398155] scsi 2:0:0:0: alua: port group 00 rel port 01
[ 709.399762] scsi 2:0:0:0: alua: port group 00 state A non-preferred supports TOlUSNA
[ 709.401763] scsi 2:0:0:0: alua: Attached
[ 709.402910] scsi 2:0:0:0: Attached scsi generic sg0 type 0
Login to [iface: default, target: iqn.2014-07.world.server:storage.target00, 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.2014-07.world.server:storage.target00 (non-flash)
# confirm the partitions
[root@www ~]#
cat /proc/partitions
major minor #blocks name
252 0 52428800 sda
252 1 512000 sda1
252 2 51915776 sda2
253 0 4079616 dm-0
253 1 47833088 dm-1
8 0 20971520 sdb
# added new device provided from the target server as "sdb"
|
| [2] | After setting iSCSI devide, configure on Initiator to use it like follwos
# 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/sdb1 isize=1024 agcount=16, agsize=327616 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=5241856, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
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
# mount it
[root@www ~]#
mount /dev/sdb1 /mnt
[ 6894.010661] XFS (sdb1): Mounting Filesystem [ 6894.031358] XFS (sdb1): Ending clean mount [root@www ~]#
df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/centos-root xfs 46G 1023M 45G 3% /
devtmpfs devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs tmpfs 1.9G 8.3M 1.9G 1% /run
tmpfs tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 xfs 497M 120M 378M 25% /boot
/dev/sdb1 xfs 20G 33M 20G 1% /mnt
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