Target

Start target

/etc/init.d/target

Checking

tree -L 4 /sys/kernel/config/target | less

Initiator

Install

apt-get install open-iscsi

Checking

iscsiadm -V

iscsiadm version 2.0-873

Service

/etc/init.d/open-iscsi start

Checking

ps aux | grep iscsid

root      8709  0.0  0.2   2908  1464 ?        Ss   16:53   0:00 /usr/sbin/iscsid
root      8710  0.0  0.6   3392  3260 ?        S<Ls 16:53   0:00 /usr/sbin/iscsid

After iscsi installation

Before you reboot, we have a few more steps to complete.

!!! DO NOT REBOOT !!!

[0] 補救不小心 reboot

如果不小心 reboot 了, 就要改 VM 的 XML 用 Harddisk boot 先

<os>
    <boot dev='network'/>
</os>

改成

<os>
    <boot dev='hd'/>
</os>
 
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/home/pxe/iscsi/u16.img'/>
      <blockio logical_block_size='512' physical_block_size='4096'/>
    </disk>

[1] 更新 Mirror

/etc/apt/sources.list

:%s/192.168.123.10/hk.archive.ubuntu.com/g

[2] Install 常用 Package

apt-get install openssh-server screen vim

/etc/ssh/sshd_config

PermitRootLogin yes

service sshd restart

[3] 修正 grub

/etc/default/grub

# GRUB_CMDLINE_LINUX_DEFAULT="splash quiet"
GRUB_CMDLINE_LINUX_DEFAULT="ip=dhcp ISCSI_INITIATOR=iqn.? ISCSI_TARGET_NAME=iqn.? ISCSI_TARGET_IP=192.168.123.10 quiet"

Other Setting

ISCSI_TARGET_PORT=3260 ISCSI_USERNAME=<username> ISCSI_PASSWORD=<password>

update-grub

[4] OS 設定 iscsi

apt-get install initramfs-tools open-iscsi

echo "iscsi" >> /etc/initramfs-tools/modules

echo "InitiatorName=iqn.?" > /etc/iscsi/initiatorname.iscsi

# mechanism for iscsi-booting (Debian)

# 在 /usr/share/initramfs-tools/hooks/iscsi

/etc/iscsi/iscsi.initramfs

ISCSI_TARGET_NAME="iqn.?"
ISCSI_TARGET_IP="192.168.123.10"
ISCSI_TARGET_PORT="3260"
ISCSI_TARGET_GROUP="1"

update-initramfs -u

[5] 設定 NIC 不再行 DHCP 拎 IP

# If the networking systems try to renegotiate an IP address,

# our connection to the iSCSI device will be lost

/etc/network

# Ensure the OS does not try to reconfigure the interface later
# dhcp --> manual
auto eth0
iface eth0 inet manual

swap on file

https://datahunter.org/dphys-swapfile