GlusterFS Technology Stack

Technology Stack​
A set of software that provides the infrastructure for a computer.
The stacks differ whether installed in a client or a server.


Terminology

Brick 파일 시스템의 마운트 포인트 GlusterFS의 빌딩 블럭으로 사용된 스토리지의 단위(unit) Translator Logic between the bits and the Global Namespace GlusterFS Layered to provide GlusterFS functionality Volume Bricks combined and passed through translators Node / Peer Server running the gluster daemon and sharing volumes

Disk, LVM and Filesystems

Direct-Attached Storage (DAS) or Just a Bunch Of Disks (JBOD) Hardware RAID RAID 6 required Logical Volume Management (LVM) XFS, EXT3/4, BTRFS Extended attributes support required XFS required

Gluster Components

glusterd Elastic volume management daemon Runs on all export servers Interfaced through gluster CLI glusterfsd GlusterFS brick daemon One process for each brick Managed by glusterd glusterfs NFS server daemon FUSE client daemon Proactive self-head daemon mount.glusterfs FUSE native mount tool gluster Gluster Console Manager (CLI)

Elastic Hash Algorithm

No central metadata No Performance Bottleneck Eliminates risk scenarios Location hashed intelligently on path and filename Unique identifiers, similar to md5sum The “Elastic” Part File assigned to virtual volumes Virtual volumes assigned to multiple bricks Volumes easily reassigned on the fly

Data Access Overview

GlusterFS Native Client Filesystem in Userspace (FUSE) NFS Built-in Service SMB/CIFS Samba server required Unified File and Object (UFO) Simultaneous object-based access NEW! libgfapi flexible abstracted starage Integrated in upstraem Samba snd Ganesha-NFS

Scaling Up, Scaling Out

Scaling Up Add disks and filesystems to a node Expand a GlusterFS volume by adding bricks Scaling Out Add GlusterFS nodes to trusted pool Add filesystems as new bricks