Re: Add brick to a disperse volume

[Ashish Pandey <aspandey@xxxxxxxxxx>]

Hi,

Adding bricks to a disperse volume is very easy and same as replica volume.

You just need to add bricks in the multiple of the number of bricks which you already have.

So if you have disperse volume with n+k configuration, you need to add n+k more bricks.

Example :

If your disperse volume is 4+2, where 2 is the redundancy count, you need to provide 6 (or multiple of 6) bricks (4+2 = 6) when you want to expand or add bricks on your volume.

I have following volume -

[root@apandey apandey]# gluster v info
 
Volume Name: vol
Type: Disperse
Volume ID: 4826eb6e-187d-4ccc-aa89-445338ec3620
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x (4 + 2) = 6
Transport-type: tcp
Bricks:
Brick1: apandey:/home/apandey/bricks/gluster/vol-1
Brick2: apandey:/home/apandey/bricks/gluster/vol-2
Brick3: apandey:/home/apandey/bricks/gluster/vol-3
Brick4: apandey:/home/apandey/bricks/gluster/vol-4
Brick5: apandey:/home/apandey/bricks/gluster/vol-5
Brick6: apandey:/home/apandey/bricks/gluster/vol-6
Options Reconfigured:
transport.address-family: inet
performance.readdir-ahead: on
nfs.disable: on
[root@apandey apandey]#

Now, If I want to add bricks in this volume I have to provide bricks in the multiple of 6. It could be 6, 12,18.....

[root@apandey apandey]# gluster v add-brick vol apandey:/home/apandey/bricks/gluster/newbrick-1  apandey:/home/apandey/bricks/gluster/newbrick-2 apandey:/home/apandey/bricks/gluster/newbrick-3 apandey:/home/apandey/bricks/gluster/newbrick-4 apandey:/home/apandey/bricks/gluster/newbrick-5 apandey:/home/apandey/bricks/gluster/newbrick-6 force
volume add-brick: success
[root@apandey apandey]# gluster v info
 
Volume Name: vol
Type: Distributed-Disperse
Volume ID: 4826eb6e-187d-4ccc-aa89-445338ec3620
Status: Started
Snapshot Count: 0
Number of Bricks: 2 x (4 + 2) = 12
Transport-type: tcp
Bricks:
Brick1: apandey:/home/apandey/bricks/gluster/vol-1
Brick2: apandey:/home/apandey/bricks/gluster/vol-2
Brick3: apandey:/home/apandey/bricks/gluster/vol-3
Brick4: apandey:/home/apandey/bricks/gluster/vol-4
Brick5: apandey:/home/apandey/bricks/gluster/vol-5
Brick6: apandey:/home/apandey/bricks/gluster/vol-6
Brick7: apandey:/home/apandey/bricks/gluster/newbrick-1
Brick8: apandey:/home/apandey/bricks/gluster/newbrick-2
Brick9: apandey:/home/apandey/bricks/gluster/newbrick-3
Brick10: apandey:/home/apandey/bricks/gluster/newbrick-4
Brick11: apandey:/home/apandey/bricks/gluster/newbrick-5
Brick12: apandey:/home/apandey/bricks/gluster/newbrick-6
Options Reconfigured:
transport.address-family: inet
performance.readdir-ahead: on
nfs.disable: on
[root@apandey apandey]#

--

Ashish

---

From: "Michel Lombart" <michellombart@xxxxxxxxxx>
To: gluster-users@xxxxxxxxxxx
Sent: Saturday, August 19, 2017 11:50:31 PM
Subject: Add brick to a disperse volume

Hello,

 

I’m using Gluster since 2 years but only with distributed volumes.

 

I’m trying now to set dispersed volumes to have some redundancy.

 

I had any problem to create a functional test volume with 4 bricks and 1 redundancy ( Number of Bricks: 1 x (3 + 1) = 4 ).

 

I had also any problem to replace a supposed faulty brick with another one.

 

My problem is that I can not add a brick to increase the size of the volume as I do with distributed ones. I would have a volume of 5 bricks ( Number of Bricks: 1 x (4 + 1) = 5 ).

 

The command  « gluster volume add-brick test-volume 10.0.13.192:/data » return « volume add-brick: failed: Incorrect number of bricks supplied 1 with count 4 ».

 

The documentation and Google was helpless.

 

How can I do ?

 

Thank for your help.

 

Michel.

 

 

 

 

_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://lists.gluster.org/mailman/listinfo/gluster-users

_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://lists.gluster.org/mailman/listinfo/gluster-users