Trying to new arbiter: volume add-brick: failed: Unable to get volinfo for volume name gv0

[garyvdm]

Hi all.

I'm trying to add an arbiter to my existing cluster.

The new arbitrator shows as connected on the 2 existing servers:

root@buildserver-a ~ # gluster peer status
Number of Peers: 2

Hostname: gluster-arbiter
Uuid: 3bb99e12-7c48-48b2-a2ef-c49f9050b563
State: Peer in Cluster (Connected)
Other names:
10.159.163.14

Hostname: buildserver-b
Uuid: 088f8c95-8594-48fe-92ac-4e9d25cc156a
State: Peer in Cluster (Connected)
Other names:
10.159.163.8

Here is the info on the volume:

root@buildserver-a ~ # gluster volume info
 
Volume Name: gv0
Type: Replicate
Volume ID: 4a29e200-a558-40c0-9947-59251451e3ad
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: 10.159.163.8:/hdd/gluster
Brick2: 10.159.163.7:/hdd/gluster
Options Reconfigured:
old.auth.allow: *
auth.allow: *,gluster-arbiter,buildserver-b
diagnostics.count-fop-hits: on
diagnostics.latency-measurement: on
cluster.granular-entry-heal: on
storage.fips-mode-rchecksum: on
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: on
features.cache-invalidation: on
features.cache-invalidation-timeout: 600
performance.stat-prefetch: on
performance.cache-invalidation: on
performance.md-cache-timeout: 600
network.inode-lru-limit: 200000
performance.readdir-ahead: on
performance.parallel-readdir: on
performance.nl-cache: on
performance.nl-cache-timeout: 600
performance.nl-cache-positive-entry: on
performance.io-thread-count: 1

When I try add-brick from one of the existing servers, I get this:

root@buildserver-a ~ # gluster volume add-brick gv0 replica 3 arbiter 1 10.159.163.14:/srv/gluster-brick
volume add-brick: failed: Pre Validation failed on gluster-arbiter. Please check log file for details.

root@gluster-arbiter ~ # tail /var/log/glusterfs/glusterd.log -n 3
[2026-01-27 13:26:20.914661 +0000] E [MSGID: 106026] [glusterd-brick-ops.c:1324:glusterd_op_stage_add_brick] 0-management: Unable to find volume: gv0 
[2026-01-27 13:26:20.914729 +0000] W [MSGID: 106121] [glusterd-mgmt.c:161:gd_mgmt_v3_pre_validate_fn] 0-management: ADD-brick prevalidation failed. 
[2026-01-27 13:26:20.914750 +0000] E [MSGID: 106121] [glusterd-mgmt-handler.c:321:glusterd_handle_pre_validate_fn] 0-management: Pre Validation failed on operation Add brick 

And when I try add-brick from the new arbiter server, I get this:

root@gluster-arbiter ~ # gluster volume add-brick gv0 replica 3 arbiter 1 10.159.163.14:/srv/gluster-brick
volume add-brick: failed: Unable to get volinfo for volume name gv0

It seems my arbiter doesn't have the info for the volume, but I don't know how to get it to get it.

Please help me to add this arbiter.