Re: Split brain?

[Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>]

On 02/10/2016 02:03 PM, Pranith Kumar Karampuri wrote:

You need to follow the steps to understand and resolve split-brains:

https://github.com/gluster/glusterfs/blob/master/doc/debugging/split-brain.md
https://github.com/gluster/glusterfs-specs/blob/master/done/Features/heal-info-and-split-brain-resolution.md

Feel free to let us know if you have any doubts. If you do not want to run into any split-brains please use arbiter based configuration or 3 way replication

Please use https://github.com/gluster/glusterfs-specs/blob/master/done/Features/afr-arbiter-volumes.md for arbiter based volumes. It is better to use 3.7.8 for this though.

Pranith

Pranith

On 02/09/2016 10:06 PM, Rodolfo Gonzalez wrote:

Sure:

administrador@data4:~$ sudo gluster volume heal data info

[sudo] password for administrador: 

Brick data1:/data/

/path/Report5.csv - Is in split-brain

Number of entries: 1

Brick data2:/data/

/path/Report5.csv - Is in split-brain

Number of entries: 1

Brick data3:/data

Status: El otro extremo de la conexión no está conectado

Brick data4:/data/

<gfid:ee7c50a7-77a5-43cf-8acb-ea67c7bd06e0> 

<gfid:76956621-078e-4859-96b5-199ccf245610> 

<gfid:19fb5dcf-3771-4efd-b0e0-80d6fdf6837e> 

<gfid:44f45e35-ae2e-4e8b-91e4-836ca426d004> 

<gfid:1aa5d5c5-b735-488a-9bcc-7d939c405ea6> 

<gfid:5fa1e144-f56e-49fa-b3b0-cec6796dda50> 

<gfid:f50c8edb-464a-4878-8c09-e75830fb8773> 

<gfid:c84ec958-b88f-4eef-9318-4504a8c06c80> 

<gfid:b95c8bb1-2b63-4964-a39b-03ade7812e4f> 

<gfid:99b5ce45-9535-4efb-a360-311dee709343> 

<gfid:7291abcf-6d18-4906-9807-2e9bd43c5706> 

<gfid:502f4502-bb19-4af9-9b0d-bb0eb842c009> 

<gfid:1c18cbc1-a1d5-4192-9826-ddab7a0a5949> 

<gfid:0fba09e1-cddf-408e-acd9-e4d959c80273> 

<gfid:3191fd2c-e4ce-43aa-857e-8458b76e15a0> 

<gfid:312a3621-5312-4dfa-9e80-7eb15a2c7453> 

<gfid:658ec55e-68b7-4ee8-8770-7cce67e3ed0b> 

<gfid:932417bd-6164-41a5-bc66-cb6010a7d720> 

<gfid:7c401c50-e24f-42a2-92c6-b724b5d7e366> 

<gfid:6622d13f-d127-45d0-b84a-2bd763f723d7> 

... (tons more)

2016-02-08 23:47 GMT-06:00 Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>:

On 02/08/2016 09:05 PM, Rodolfo Gonzalez wrote:

Hello, I think that I have a split-brain issue in a replicated-striped gluster cluster with 4 bricks: brick1+brick2 - brick3+brick4 

In both brick3 and brick4 I'm getting these kind of messages:

[2016-02-08 15:01:49.720343] E [afr-self-heal-entry.c:246:afr_selfheal_detect_gfid_and_type_mismatch] 0-data-replicate-1: Gfid mismatch detected for <572624f9-6752-44c4-b403-d1775dc7ea0d/Report.csv>, 05dabf44-56aa-471f-a898-02ce225d31b0 on data-client-3 and 1cf52b86-6c69-4483-8f17-686f50b3f316 on data-client-2. Skipping conservative merge on the file.

gluster volumen status show 4 bricks online and no errors. gluster peer status shows all 4 bricks connected. bricks 2 and 1 show no errors. Gluster version is 3.6.8 in all 4 servers.

How can this be solved? Any help is appreciated :)

Could you give "gluster volume heal <volname> info" output?

Pranith

Thank you.

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