iSCSI

• ISCSI
• linux-iscsi - LIO
• Archlinux
  • ISCSI Initiator
    • [简体中文](https://wiki.archlinux.org/index.php/ISCSI initiator (简体中文))
  • TGT iSCSI Target
• Linux iSCSI Target (TCM)
• High performance SCST iSCSI Target on Linux software Raid
  • SCST deprecated
• Linux SCSI target framework
• TCM - Target Core module
• https://en.wikipedia.org/wiki/SCST
• A tale of two SCSI targets
• open-iscsi/targetcli-fb
  • A command shell for managing the Linux LIO kernel target
• https://pkgs.alpinelinux.org/package/v3.6/community/x86_64/targetcli
• https://pkgs.alpinelinux.org/package/v3.6/main/x86_64/open-iscsi
• High performance, transport independent, multi-platform iSCSI initiator

port	for
3260	iSCSI

abbr.	stand for	meaning
SCSI	Small Computer System Interface
iSCSI	Internet Small Computer Systems Interface
IQN	iSCSI Qualified Name
LUN	Logical Unit Number
TCM	Target Core Module
TGT	Target

• Initiator - 发起端/客户端
• Target - 目标端/服务端

caution

• iSCSI 不支持多个节点共享挂载 - 因为底层 fs 不支持
  • 例如 ext4, xfs, btrfs, ntfs 都是假设单个操作系统独占访问和管理
  • 单个操作系统维护 缓存、元数据、日志
  • 除非使用集群文件系统: GFS2, OCFS2, VMFS

apk add open-iscsi

# iscsiadm -m discovery -t sendtargets -p <target_ip>
# iscsiadm -m node -T <target_iqn> -p <target_ip> --login

iscsiadm -m discovery -t sendtargets -p 192.168.1.100
# IQN
# 192.168.1.100:3260,1 iqn.2000-01.com.synology:SYN-NAS.default-target.00000000000

service iscsid start

# 发现
iscsiadm -m discovery -t sendtargets -p 192.168.1.1
# 登陆
iscsiadm --mode node --targetname iqn.2001-05.com.doe:test --portal 192.168.1.1:3260 --login