[Bugs] [Bug 1577230] New: Cannot see other bricks after upgrade

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1577230

            Bug ID: 1577230
           Summary: Cannot see other bricks after upgrade
           Product: GlusterFS
           Version: 3.13
         Component: glusterd
          Severity: urgent
          Assignee: bugs at gluster.org
          Reporter: dschilling at churchtools.de
                CC: bugs at gluster.org



Created attachment 1434923
  --> https://bugzilla.redhat.com/attachment.cgi?id=1434923&action=edit
glusterd.log

Description of problem:

I am running glusterfs on three different vms. They are all running on Ubuntu
17.04.
The used version of glusterd is 3.11.3.

Today i wanted to upgrade the three servers starting with one to the new ubuntu
lts version 18.04.

After the update when i run `gluster volume status` i can only see the bricks
of the current vm and it is offline. 
`gluster peer status` returns `Peer Rejected (Connected)` for all other peers.

The new version of glusterfs which was installed with the ubuntu update is
3.13.2.


I added some logs in the attachment.

Other things i noticed after upgrading.
I now have two gluster folders in var/lib: /var/lib/glusterd_old and
/var/lib/glusterd
Also i have two really similar looking systemd services glusterd.service and
glusterfs-server.service.

Running `gluster volume status churchtools_de`gives the following output:

```
Status of volume: churchtools_de
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick glusterfs101.ct-srv.de:/gluster-stora
ge/churchtools.de                           N/A       N/A        N       N/A

Task Status of Volume churchtools_de
------------------------------------------------------------------------------
There are no active volume tasks

root at glusterfs101:~# gluster volume status
Status of volume: churchtools_de
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick glusterfs101.ct-srv.de:/gluster-stora
ge/churchtools.de                           N/A       N/A        N       N/A

Task Status of Volume churchtools_de
------------------------------------------------------------------------------
There are no active volume tasks

Volume churchtools_scripts is not started

Status of volume: churchtools_sites
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick glusterfs101.ct-srv.de:/gluster-stora
ge/churchtools_sites                        N/A       N/A        N       N/A

Task Status of Volume churchtools_sites
------------------------------------------------------------------------------
There are no active volume tasks

Status of volume: user_homes
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick glusterfs101.ct-srv.de:/gluster-stora
ge/user_homes                               N/A       N/A        N       N/A

Task Status of Volume user_homes
------------------------------------------------------------------------------
There are no active volume tasks
```

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