[root@instructor ~]# fdisk -l
Disk /dev/sda: 15.0 GB, 15032385536 bytes
255 heads, 63 sectors/track, 1827 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0005ee19
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 1571 12307456 83 Linux
/dev/sda3 1571 1828 2064384 82 Linux swap / Solaris
Disk /dev/sdb: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Agregamos una partición con el filesystem ext4
[root@instructor ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x9d5a4444.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1044, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-1044, default 1044): 1044
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
Finalmente asignar el filesystem correspondiente EXT4 a nuestro pedazo de disco.
[root@instructor ~]# mkfs.ext4 /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
524288 inodes, 2096474 blocks
104823 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2147483648
64 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 26 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@instructor ~]#
[root@instructor named]# yum install scsi*
En mi caso finalmente quedo instalado scsi-target-utils.x86_64 0:1.0.24-2.el6
02. Realizar las configuraciones en /etc/tgt/targets.conf, adicionar al final:
backing-store /dev/sdb1
Recuerde esa canción vmware, año mes dominio al revés.
03. Iniciar el servicio tgtd:
[root@instructor ~]# service tgtd start
Starting SCSI target daemon: [ OK ]
[root@instructor ~]#
04. Verificar el servicio configurado
[root@instructor ~]# tgt-admin -s
Target 1: iqn.2014-04.rh.lab:instructor.target1
System information:
Driver: iscsi
State: ready
I_T nexus information:
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: 8587 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
Backing store type: rdwr
Backing store path: /dev/sdb1
Backing store flags:
Account information:
ACL information:
ALL
[root@instructor ~]#
04. Ahora nos ubicamos en la maquina cliente para solicitar el recurso iscsi el cual es proveído desde la máquina instructor.lab.rh; también será necesario instalar los paquetes iscsi* mediante yum install iscsi-initiator-utils
05. Este utilitario (iscsi-initiator-utils) nos instala la tool iscsiadm
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