iscsi multipath

Lenovo DSStorageLinuxunderISCSIMulti-Path mapping configurationRenren 2018-01-17Lab Environment: ds4200 storage, B The director pool divides a size of 18g volume 1G Iscsi port port2 and Port3 Port B2 port ip 172.16.1.14/24 port B3 port ip 172.16.1.15/24the client system is a CentOS 6.9 , two Ethernet ports,eth0 port ip 172.16.1.195/24,eth1 Port IP for 172.16.1.196/24. Network is the state of Unicom. The client needs to use this 18G volume

Tags: package/usr ODI next Nic multipath Operation IDT CommandOne, what is multipathThe normal computer host is a hard disk attached to a bus, here is a one-to-one relationship. In the case of a SAN environment with optical fiber, or an ipsan environment made up of iSCSI, the host and storage are connected by a fibre switch or multiple network cards and IP, which makes the relationship much more numerous. I

Multipath implements LUN device name persistence. I. additional knowledge based on different transmission protocols, the network card can be divided into three types: An Ethernet card, an FC network card, and an iSCSI Network card. (1) Ethernet adapter: The learning name EthernetAdapter. the transmission protocol is the IP protocol. Generally, the persistence of the LUN device name is realized through optic

1 , two servers each configuration two network cardsStore:Eth0:192.168.1.20/24Eth1:192.168.2.20/24Node:Eth0:192.168.1.10/24Eth1:192.168.2.10/242 , Storage server configuration Targert# vim/etc/tgt/targets.confBacking-store/dev/sdb1Initiator-address 192.168.1.10Initiator-address 192.168.2.10# Service TGTD Restart# Chkconfig TGTD on3 , discovering storage on the node# Iscsiadm--mode Discovery--type sendtargets--portal 192.168.1.20--discover# Iscsiadm--mode Discovery--type sendtargets--portal 192.1

the SCSI definition. The FC SAN and IP San are currently two popular SAN storage scenarios: When a SAN device is connected to the system, it is represented as one or more target IDs, and its logical allocation unit is LUN-LOGICAL unit number (logical unit). The IP San is also known as iSCSI (Internet Small computer System Interface). The core of iSCSI technology is the transmission o

Multipath implements LUN device name persistence. I. Additional knowledge based on different transmission protocols, the network card can be divided into three types: an Ethernet card, an FC network card, and an iSCSI network card. (1) Ethernet Adapter: an Ethernet Adapter. The transmission protocol is an IP protocol. It is generally connected to an Ethernet switch through an optical fiber cable or twisted

Using MPath devices After the mapping is generated with multipath, multiple devices pointing to the same link are generated in the/dev directory: /dev/mapper/mpathn /dev/mpath/mpathn /dev/dm-n But their origins are completely different: /DEV/MAPPER/MPATHN is a multipath virtual multi-path device, we should use this device; /dev/mpath/mpathn is created by Udev Device Manager, which is actually pointin

simulate Linux dual-nic dual IP for multipath multi-Path connection storage system (centos6.5:oracle-1) :Eth0:192.168.21.23/24Eth1:172.16.112.17/24Storage ip:192.168.21.230to configure iSCSI storage first , and then next, I've configured two iscis StorageNIC Routing ConfigurationBecause there can only be one gateway, adding a static route enables two-NIC communication1. edit the NIC eth0,eth1Set up the con

1.Installing the Multipath tool# yum–y Install Device-mapper Device-mapper-multipath2. Set boot from boot# Chkconfig MULTIPATHD on3. Open Multipath# mpathconf--enableor use the full command: mpathconf--enable--find_multipaths y--with_multipathd y--with_chkconfig y4. Open Service# Service MULTIPATHD Restart5. View Status# MULTIPATH-LLThe following status indicates

After a look at the configuration of other people on the Internet, combined with Redhat's technical white paper, I have personally configured a Dm-multipath storage multi-path implementation on the basis of Centos7+huawei Oceanstore s2600t. Which encountered a number of small problems and do not understand the place, the book did not say that the purge, in this summary, for their own and everyone's reference.1. Install

Linux ISCSI multi-path Mount Storage Preparations:After the LUN is created, the lLUN is divided into independent groups, and the server's iqn information is added to the LUN. If it is placed in the default group, the hard disk information displayed during ISCSI scan is of all Luns, which may lead to misoperations. Scan storage:The ISCSI plug-in has been selected

manipulate the disks in the/dev/mapper/directory. It's a good idea to run the pvcreate command before partitioning the disks generated by Multipath software: [[emailprotected] ]# pvcreate/dev/ Mapper/mpatha [[email Protected] ]# Fdisk/dev/mapper/mpatha partition with this directory/dev/mapper/mpatha N: Represents the new partition, p: Represents the primary partition, W: Represents the Save exit, set the disk size with + 30000M, when the disk is d

Description: For iSCSI storage devices with two or more controllers, or for systems with Openfiler with two network adapters. You need to configure Multipath to improve availability. This article uses Openfiler to implement the installation and testing of iSCSI devices. This article NAS uses Openfiler 2.99.1 X64 as an experimental environment to prepare for a r

The multi-path software under Ubuntu system is the DM multipath tool that comes with the operating system. ----------------------------------------------------------------------------------------------------------- -------Dm-multipath Component Description: dm_multipath: kernel modules re-specify I/O for path and path groups and support for error redundancy. multipath