TGT + RBD + multiph

TGT + RBD + multiph

I. Ceph installation Create RBD image, you can specify a format of 1 if you do not need to use some of the RBD features

root@node1:~# RBD Create--size 10240 testrbd/foo1--image-format 1

View RBD Image Information

root@node1:~# RBD Info testrbd/foo1

RBD image ' Foo1 ':

Size 10240 MB in 2560 objects

Order (4096 KB objects)

block_name_prefix:rb.0.191657.2ae8944a

Format:1

two. TGT installation, server-side installation support RBD tgt,ubuntu16.04 installation method

root@node0:/etc/tgt# Apt-get Install TGT-RBD

See if your TGT supports RBD

root@node0:/etc/tgt# tgtadm--lld iSCSI--mode system--op Show

Configure the TGT service separately on both host hosts and add configuration files

three. CentOS Multi-path configuration, client installation multipath, Centos6.4 installation method

Configure multipath.conf

Start the MULTIPATHD service

[Root@localhost ~]#/ETC/INIT.D/MULTIPATHD Restar

Configuration file explanation If you want to generate a mpath device, you need to turn on User_friendly_names Blcaklist on behalf of the blacklist, the disk in the blacklist will not be added to the multipath, such as the system disk

four. Client login and implementation of Multipath Iscisadm Login

[Root@localhost ~]# iscsiadm-m node-t iqn.2016-12.js-wx-smy:multipath.test--login

Lsblk found two more block devices, SDB,SDC

Scan Disk

[Root@localhost ~]# Multipath-v2

View Mulitpath Topologies

LSBLK view, you can see SDB,SDC merged into the/DEV/MAPPER/MPATHB