multipath routing

Recently read a number of papers, multipath routing algorithm. More obscure, or reluctantly summed up a little content: multi-path Routing Algorithms Summary Problem formulation 2 MPA (multiple Path algorithm) 2 Problem solved by the MPA algorithm 2 MPA uses the essence of thought 3 MPA Execution Procedure 3 Mdva (Distance-vector

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. In other words, host-to-storage can have multi

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

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

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

Session[sid:2, Target:iqn.2017-03.centos-i1:target1, portal:192.168.136.101,3260]Logout of [Sid:1, Target:iqn.2017-03.centos-i1:target1, portal:192.168.20.101,3260] successful.Logout of [Sid:2, Target:iqn.2017-03.centos-i1:target1, portal:192.168.136.101,3260] successful.# lsblk # Verify that the device is logout# iscsiadm-m Node-tiqn.2017-03.centos-i1:target1–l # re-login, the case here is a two-pathLogging in to [Iface:default, Target:iqn.2017-03.centos-i1:target1, portal:192.168.20.101,3260]

Installation and ConfigurationDm-multipathInstallation RunDmSoftware# yum Install Device-mapper-multipath #/etc/init.d/multipathdrestartOkstopping Multipathddaemon: [OK]Starting Multipathddaemon: [OK]MULTIPATHD Once the service is started, it will pass SCSI ID automatically find multiple paths for the same device, and install the default settings to aggregate them for use. # MULTIPATH-LLMPATHB (1IET 0001000

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

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 optical fiber cables or dual

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