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This article mainly introduces rhel6.3 how to build iscsi-target server, the article is very detailed, has a certain reference value, interested friends must read it!

Let's take a look at how to build an iscsi-target server on RHEL6.3 and how to mount a client.

I. server-side operation

Server version:

[root@racscsi home] # uname-r

2.6.32-279.el6.x86_64

[root@racscsi home] # cat / etc/redhat-release

Red Hat Enterprise Linux Server release 6.3 (Santiago)

Install the iscsi server package.

Install it in the RPM way.

[root@racscsi home] # rpm-ivh scsi-target-utils-1.0.24-2.el6.x86_64.rpm

Warning: scsi-target-utils-1.0.24-2.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing... # [100%]

Package scsi-target-utils-1.0.24-2.el6.x86_64 is already installed

Install with the yum command (you need to configure the YUM source yourself)

[root@racscsi home] # yum-y install scsi-target-utils

Start the service and add to boot self-startup.

[root@racscsi home] # / etc/init.d/tgtd start

Starting SCSI target daemon: [OK]

[root@racscsi home] # chkconfig tgtd on

Use the fdisk command to create several partitions, or map shared partitions through external storage.

The server has been partitioned into / dev/sdb, / dev/sdc, / dev/sdd, / dev/sde, / dev/sdf, / dev/sdg, / dev/sdh, / dev/sdi for client mount

Next we need to edit the configuration file / etc/tgt/targets.conf and set iSCSI Qualified Name (IQN).

[root@racscsi home] # vim / etc/tgt/ targets.conf

Add the following at the end of the file

# iqn name is optional

Backing-store / dev/sdb

Backing-store / dev/sdc

Backing-store / dev/sdd

Backing-store / dev/sde

Backing-store / dev/sdf

Backing-store / dev/sdg

Backing-store / dev/sdh

Backing-store / dev/sdi

Initiator-address 192.168.10.0amp 24 # limits the client address range or specific IP that is allowed to access

Write-cache off # whether to turn the cache on or off

Restart the service so that the modified configuration takes effect.

[root@racscsi home] # / etc/init.d/tgtd restart

Determine if the iscsi server was successful. If the following is displayed, the configuration of iscsi server has been successful.

[root@racscsi home] # tgt-admin-- show

Target 1: iqn.2008-09.com.example:asm

System information:

Driver: iscsi

State: ready

I_T nexus information:

I_T nexus: 1

Initiator: iqn.1994-05.com.redhat:b363811441a

Connection: 0

IP Address: 192.168.10.212

LUN information:

LUN: 0

Type: controller

SCSI ID: IET 00010000

SCSI SN: beaf10

Size: 0 MB, Block size: 1

Online: Yes

Removable media: No

Prevent removal: No

Readonly: No

Backing store type: null

Backing store path: None

Backing store flags:

LUN: 1

Type: disk

SCSI ID: IET 00010001

SCSI SN: beaf11

Size: 2147 MB, Block size: 512

Online: Yes

Removable media: No

Prevent removal: No

Readonly: No

Backing store type: rdwr

Backing store path: / dev/sdb

Backing store flags:

. # Intermediate content omitted

LUN: 8

Type: disk

SCSI ID: IET 00010008

SCSI SN: beaf18

Size: 5369 MB, Block size: 512

Online: Yes

Removable media: No

Prevent removal: No

Readonly: No

Backing store type: rdwr

Backing store path: / dev/sdi

Backing store flags:

Account information:

ACL information:

192.168.10.0/24

Note: close the IPTABLES on the server to prevent the client from being unable to access it properly.

II. Client mount

The package iscsi-initiator-utils to be installed by the client

[root@rac2 home] # rpm-ivh iscsi-initiator-utils-6.2.0.872-41.el6.x86_64.rpm

Warning: iscsi-initiator-utils-6.2.0.872-41.el6.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing... # [100%]

1:iscsi-initiator-utils # # [100%]

Install with the yum command (you need to configure the YUM source yourself)

[root@rac2 home] # yum-y install iscsi-initiator-utils

Start the service and add it to boot.

[root@rac2 Desktop] # / etc/init.d/iscsid start

[root@rac2 Desktop] # chkconfig iscsid on

Discover the shared partition of the server-side iscsi server.

[root@rac2 Desktop] # iscsiadm-mode discovery-type sendtargets-portal 192.168.10.220

192.168.10.220pur3260 iqn.2008-09.com.example:asm

Has been discovered

Log in to the partition shared by iscsi server.

[root@rac2 Desktop] # iscsiadm-m node-T iqn.2008-09.com.example:asm-p 192.168.10.220-l

Logging in to [iface: default, target: iqn.2008-09.com.example:asm, portal: 192.168.10.220 Magne3260] (multiple)

Login to [iface: default, target: iqn.2008-09.com.example:asm, portal: 192.168.10.220 Magne3260] successful.

Then use the fdisk-l command to view the partitions and find that all the shared partitions have been hung up.

[root@rac2 Desktop] # fdisk-l

Disk / dev/sda: 21.5 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000586f0

Device Boot Start End Blocks Id System

/ dev/sda1 * 1 39 307200 83 Linux

Partition 1 does not end on cylinder boundary.

/ dev/sda2 39 549 4096000 82 Linux swap / Solaris

Partition 2 does not end on cylinder boundary.

/ dev/sda3 549 2611 16567296 83 Linux

Disk / dev/sdb: 2147 MB, 2147483648 bytes

67 heads, 62 sectors/track, 1009 cylinders

Units = cylinders of 4154 * 512 = 2126848 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdc: 2147 MB, 2147483648 bytes

67 heads, 62 sectors/track, 1009 cylinders

Units = cylinders of 4154 * 512 = 2126848 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdd: 2147 MB, 2147483648 bytes

67 heads, 62 sectors/track, 1009 cylinders

Units = cylinders of 4154 * 512 = 2126848 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sde: 10.7 GB, 10737418240 bytes

64 heads, 32 sectors/track, 10240 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdf: 10.7 GB, 10737418240 bytes

64 heads, 32 sectors/track, 10240 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdg: 10.7 GB, 10737418240 bytes

64 heads, 32 sectors/track, 10240 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdh: 5368 MB, 5368709120 bytes

166 heads, 62 sectors/track, 1018 cylinders

Units = cylinders of 10292 * 512 = 5269504 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk / dev/sdi: 5368 MB, 5368709120 bytes

166 heads, 62 sectors/track, 1018 cylinders

Units = cylinders of 10292 * 512 = 5269504 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Finally, you can format the partition and mount it in the local directory. If you want to achieve boot auto-mount, you need to add records in the fstab file.

Be careful to add the _ netdev parameter, or you will report an error when you restart iscsi server.

Example: / dev/sdb / crs ext4 default,_netdev 0 0

Add:

If the user name and password are configured in the server / etc/tgt/targets.conf file, such as

Backing-store / dev/sdb

Initiator-address 192.168.10.0/24

Incoming grid 123@passwd

Write-cacheoff

In the client / etc/iscsi/iscsid.conf configuration file

You need to add the appropriate account and password.

Node.session.auth.username = grid

Node.session.auth.password = 123@passwd

Discovery.sendtargets.auth.username = grid

Discovery.sendtargets.auth.password = 123@passwd

The above is all the contents of the article "how to build an iscsi-target server in rhel6.3". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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