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GlusterFS distributed file system

GlusterFS is an open source distributed file system, the structure of the software is well designed, easy to expand and configure, through the flexible collocation of various modules to get targeted solutions. The following problems can be solved: network storage, federated storage, redundant backup, load balancing of large files. The reliability has not been tested for a long time, and it is not suitable for the product environment that provides 24-hour uninterrupted service. At present, it is suitable for offline applications with a large amount of data.

GlusterFS interconnects many cheap X86 hosts into a parallel network file system through infiniband RDMA or TCP/IP.

Note:

A storage unit in Brick:GFS through an export directory of a server in a trusted storage pool.

Client: a device attached to a GFS volume.

Node: the device that stores the Brick.

RDMA: remote direct memory access.

Each file or directory in the GFID:GFS volume is associated with a unique 128-bit data.

FUSE: a loadable kernel module that allows non-privileged users to create their own file systems without modifying kernel code.

Deployment of GlusterFS:

V install dependency package

# yum-y install xfsprogs fuse fuse-libs libacl-devel flex bison openssl-devel sqlite-devel libxml2

# rpm-ivh userspace-rcu-0.9.2-2.fc25.x86_64.rpm

# rpm-ivh userspace-rcu-devel-0.9.2-2.fc25.x86_64.rpm

V installation trilogy

#. / configure-prefix=/usr/local/gluster

# make & & make install

V manually specify that the system finds URCU

# ldconfig

# pkg-config-libs-cflags liburcu-bp liburcu

V define system variabl

# vim / etc/profile

Add content:

PATH=$PATH:/usr/local/gluster/sbin

V enable Glusterd service

# glusterd start

# ps aux | grep glusterd

Use of Gluster:

V Gluster cluster association

# gluster peer probe 1.1.1.1

# gluster peer probe 1.1.1.2

# gluster peer probe 1.1.1.3

V add a hard disk to the host, format and mount it

# fdisk-l

# fdisk / dev/sdb

# mkfs / dev/sdb1

# mount / dev/sdb1 / a

V create Volume

Multiple disks make up a volume without RAID

# gluster volume create renvg 1.1.1.1:/a 1.1.1.2:/b 1.1.1.3:/c

Multiple disks form a volume to make a RAID1

# gluster volume create renvg replica 2 1.1.1.1:/a 1.1.1.2:/b 1.1.1.3:/c

V just mount the volume in a folder

# mount-t glusterfs-o acl master:/renvg / opt/a

Summary of Gluster basic commands

Command

Description

Gluster volume stop renvg

Stop the use of volumes

Gluster volume start renvg

Start using the volume

Gluster volume delete renvg

Delete Volum

Repair the disk in the volume

Gluster volume replace-brick renvg 1.1.1.1:/a 1.1.1.3:/new

Gluster volume heal renvg full

Repair Volum

Expand volume capacity

Gluster volume add-brick renvg 1.1.1.4:/new

Expand the capacity of a volume online

Gluster volume rebalance renvg start

Balanced data

Reduce volume capacity

Gluster volume remove-brick renvg 1.1.1.1:/a start

Reduce the capacity of volumes online

Gluster volume remove-brick renvg 1.1.1.1:/a status

View the status of deleted volumes

Gluster volume remove-brick renvg commit

Submit remove operation

Disk quota

Gluster volume quota renvg enable

Turn on disk quota

Gluster volume quota renvg limit-usage / quo_a 10Gb

Set this directory to use only the 10Gb of the volume

Gluster volume quota renvg list

Show current quota usage

Gluster volume quota renvg remove / quo_a

Remove directory quota

Gluster volume quota renvg disable

Deactivate disk quota

Create volumes using RAID

Gluster volume create renvg stripe 3 1.1.1.1:/a 1.1.1.2:/b 1.1.1.3:/c

RAID0

Gluster volume create renvg replica2 stripe 3 1.1.1.1:/a 1.1.1.2:/b 1.1.1.3:/c

RAID1+0

Gluster volume create renvg disperse 6 redundancy 1 1.1.1.1:/a 1.1.1.2:/b 1.1.1.3:/c

RAID5

Gluster volume create renvg disperse 10 redundancy 5

RAID6

Note: green is the name of the volume.

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