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Ravishankar N

2016-May-11 08:57 UTC

[Gluster-users] Number of Bricks 1 x (2 + 1) = 3 and arbiter disappearing

On 05/11/2016 02:17 PM, Nicola Petracchi wrote:> Hello, I have deployed a gluster configuration of this type:
> Number of Bricks: 1 x (2 + 1) = 3
> 2 data + 1 arbiter
>
> After deploy, all machines were reporting the correct volume info
informations:
> Volume Name: gvol0
> Type: Replicate
> Status: Started
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: pc01:/var/lib/gvol0/brick1
> Brick2: pc02:/var/lib/gvol0/brick2
> Brick3: pcgw:/var/lib/gvol0/brickgw (arbiter)
>
> Then, I had to restart gluster service on brick2, after that, only on
> that machine the volume info was:
> Volume Name: gvol0
> Type: Replicate
> Status: Started
> Number of Bricks: 1 x 3 = 3
> Transport-type: tcp
> Bricks:
> Brick1: pc01:/var/lib/gvol0/brick1
> Brick2: pc02:/var/lib/gvol0/brick2
> Brick3: pcgw:/var/lib/gvol0/brickgw
> others nodes were still reporting the original volume info informations.
>
> This thing appears strange to me, since I suppose all the members of a
> cluster should be consistent on output of informations of a
"shared"
> resource.
>
> Btw, later on I had to reboot the arbiter server and again, on that server:
> Volume Name: gvol0
> Type: Replicate
> Status: Started
> Number of Bricks: 1 x 3 = 3
> Transport-type: tcp
> Bricks:
> Brick1: pc01:/var/lib/gvol0/brick1
> Brick2: pc02:/var/lib/gvol0/brick2
> Brick3: pcgw:/var/lib/gvol0/brickgw
>
> Only one node, the one never rebooted is stating that brick3 is an
> arbiter, aside this information the arbiter node is working as an
> arbiter since the data folder contains empty files and is updated with
> the others.
>
> Is this a situation to solve? an issue?What version of gluster are you running? This was bug that got fixed 
(http://review.gluster.org/12479) in 3.7.7. I would advise you to use 
the latest release 3.7.11 if you are trying out arbiter.
Hope this helps,
Ravi> Considerations are appreciated.
> Regards
> N
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users

Nicola Petracchi

2016-May-11 09:31 UTC

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[Gluster-users] Number of Bricks 1 x (2 + 1) = 3 and arbiter disappearing

Hi, thx for the quick reply

I have this configuration
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty
Linux 3.13.0-86-generic #130-Ubuntu SMP

ppa:gluster/glusterfs-3.7

ii  glusterfs-client                         3.7.11-ubuntu1~trusty1
          amd64        clustered file-system (client package)
ii  glusterfs-common                         3.7.11-ubuntu1~trusty1
          amd64        GlusterFS common libraries and translator
modules
ii  glusterfs-server                         3.7.11-ubuntu1~trusty1
          amd64        clustered file-system (server package)

N

2016-05-11 10:57 GMT+02:00 Ravishankar N <ravishankar at
redhat.com>:> On 05/11/2016 02:17 PM, Nicola Petracchi wrote:
>>
>> Hello, I have deployed a gluster configuration of this type:
>> Number of Bricks: 1 x (2 + 1) = 3
>> 2 data + 1 arbiter
>>
>> After deploy, all machines were reporting the correct volume info
>> informations:
>> Volume Name: gvol0
>> Type: Replicate
>> Status: Started
>> Number of Bricks: 1 x (2 + 1) = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: pc01:/var/lib/gvol0/brick1
>> Brick2: pc02:/var/lib/gvol0/brick2
>> Brick3: pcgw:/var/lib/gvol0/brickgw (arbiter)
>>
>> Then, I had to restart gluster service on brick2, after that, only on
>> that machine the volume info was:
>> Volume Name: gvol0
>> Type: Replicate
>> Status: Started
>> Number of Bricks: 1 x 3 = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: pc01:/var/lib/gvol0/brick1
>> Brick2: pc02:/var/lib/gvol0/brick2
>> Brick3: pcgw:/var/lib/gvol0/brickgw
>> others nodes were still reporting the original volume info
informations.
>>
>> This thing appears strange to me, since I suppose all the members of a
>> cluster should be consistent on output of informations of a
"shared"
>> resource.
>>
>> Btw, later on I had to reboot the arbiter server and again, on that
>> server:
>> Volume Name: gvol0
>> Type: Replicate
>> Status: Started
>> Number of Bricks: 1 x 3 = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: pc01:/var/lib/gvol0/brick1
>> Brick2: pc02:/var/lib/gvol0/brick2
>> Brick3: pcgw:/var/lib/gvol0/brickgw
>>
>> Only one node, the one never rebooted is stating that brick3 is an
>> arbiter, aside this information the arbiter node is working as an
>> arbiter since the data folder contains empty files and is updated with
>> the others.
>>
>> Is this a situation to solve? an issue?
>
> What version of gluster are you running? This was bug that got fixed
> (http://review.gluster.org/12479) in 3.7.7. I would advise you to use the
> latest release 3.7.11 if you are trying out arbiter.
> Hope this helps,
> Ravi
>>
>> Considerations are appreciated.
>> Regards
>> N
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-users
>
>
>


-- 
Nicola Petracchi
Senior Developer
Skype: nicola.petracchi
 Mail: nicola.petracchi at digiville.it
 Cell: +39 338 2945627

DigiVille S.r.l.
Performance & Classified Media
www.digiville.it

Gluster users - May 2016 - Number of Bricks 1 x (2 + 1) = 3 and arbiter disappearing

[Gluster-users] Number of Bricks 1 x (2 + 1) = 3 and arbiter disappearing

[Gluster-users] Number of Bricks 1 x (2 + 1) = 3 and arbiter disappearing