[Gluster-users] Unable to remove / replace faulty bricks

Tue Jun 18 11:54:05 UTC 2013

Hello, 

I have managed to clear pending 0031 to 0028 operation by shutting down all the nodes , deleting rb_mount file and editing rb_state file. However this did not help reintroduce 00031 to the cluster (0022 also but it is offline so no chance to do peer probe). 

I have tried to replicate node removal and reattaching on other cluster and node did seem to be accepted after peer probe but due to no spare servers available for that cluster I was not able to do "brick replace".

In the gluster  config files I do not find anything that might indicate that node is not part of cluster:
* Node is part of glustervmstore-client-24 
* Subvolume is defined in replica set glustervmstore-replicate-12
* Replica set is defined as part of main volume.
Everything looks like other replica sets. 

*** COMMAND:
gluster volume replace-brick glustervmstore 00031:/mnt/vmstore/brick 00028:/mnt/vmstore/brick start
brick: 00031:/mnt/vmstore/brick does not exist in volume: glustervmstore

*** Log file /var/log/glusterfs/etc-glusterfs-glusterd.vol.log  extracts:
On the missing node 00031

[2013-06-18 12:45:09.328647] I [socket.c:1798:socket_event_handler] 0-transport: disconnecting now
[2013-06-18 12:45:11.983650] I [glusterd-handler.c:502:glusterd_handle_cluster_lock] 0-glusterd: Received LOCK from uuid: 2d46fb6f-a36a-454a-b0ba-7df324746737
[2013-06-18 12:45:11.983723] I [glusterd-utils.c:285:glusterd_lock] 0-glusterd: Cluster lock held by 2d46fb6f-a36a-454a-b0ba-7df324746737
[2013-06-18 12:45:11.983793] I [glusterd-handler.c:1322:glusterd_op_lock_send_resp] 0-glusterd: Responded, ret: 0
[2013-06-18 12:45:11.991438] I [glusterd-handler.c:1366:glusterd_handle_cluster_unlock] 0-glusterd: Received UNLOCK from uuid: 2d46fb6f-a36a-454a-b0ba-7df324746737
[2013-06-18 12:45:11.991537] I [glusterd-handler.c:1342:glusterd_op_unlock_send_resp] 0-glusterd: Responded to unlock, ret: 0
[2013-06-18 12:45:12.329047] I [socket.c:1798:socket_event_handler] 0-transport: disconnecting now
[2013-06-18 12:45:15.329431] I [socket.c:1798:socket_event_handler] 0-transport: disconnecting now

On the node I am attempting to do brick replace 00031 to 00028:

[2013-06-18 12:45:11.982606] I [glusterd-replace-brick.c:98:glusterd_handle_replace_brick] 0-glusterd: Received replace brick req
[2013-06-18 12:45:11.982691] I [glusterd-replace-brick.c:147:glusterd_handle_replace_brick] 0-glusterd: Received replace brick start request
[2013-06-18 12:45:11.982754] I [glusterd-utils.c:285:glusterd_lock] 0-glusterd: Cluster lock held by 2d46fb6f-a36a-454a-b0ba-7df324746737
[2013-06-18 12:45:11.982777] I [glusterd-handler.c:463:glusterd_op_txn_begin] 0-management: Acquired local lock
[2013-06-18 12:45:11.984772] I [glusterd-rpc-ops.c:548:glusterd3_1_cluster_lock_cbk] 0-glusterd: Received ACC from uuid: f7860586-f92c-4114-8336-823c223f18c0
..... LOTS of ACC messages ..... 
[2013-06-18 12:45:11.987076] I [glusterd-rpc-ops.c:548:glusterd3_1_cluster_lock_cbk] 0-glusterd: Received ACC from uuid: c49cfdbe-2af1-4050-bda1-bdd5fd3926b6
[2013-06-18 12:45:11.987116] I [glusterd-rpc-ops.c:548:glusterd3_1_cluster_lock_cbk] 0-glusterd: Received ACC from uuid: 7e9e1cf3-214e-45c8-aa37-4da0def7fb6b
[2013-06-18 12:45:11.987196] I [glusterd-utils.c:857:glusterd_volume_brickinfo_get_by_brick] 0-: brick: 00031:/mnt/vmstore/brick
[2013-06-18 12:45:11.990732] E [glusterd-op-sm.c:1999:glusterd_op_ac_send_stage_op] 0-: Staging failed
[2013-06-18 12:45:11.990785] I [glusterd-op-sm.c:2039:glusterd_op_ac_send_stage_op] 0-glusterd: Sent op req to 0 peers
[2013-06-18 12:45:11.992356] I [glusterd-rpc-ops.c:607:glusterd3_1_cluster_unlock_cbk] 0-glusterd: Received ACC from uuid: f0fcb6dd-c4ef-4751-b92e-db27ffd252d4
[2013-06-18 12:45:11.992480] I [glusterd-rpc-ops.c:607:glusterd3_1_cluster_unlock_cbk] 0-glusterd: Received ACC from uuid: 33c008a5-9c11-44d7-95c6-58362211bbe8
..... LOTS of ACC messages .....
[2013-06-18 12:45:11.994447] I [glusterd-rpc-ops.c:607:glusterd3_1_cluster_unlock_cbk] 0-glusterd: Received ACC from uuid: 444a54c6-d4f5-4407-905c-aef4e56e02be
[2013-06-18 12:45:11.994483] I [glusterd-rpc-ops.c:607:glusterd3_1_cluster_unlock_cbk] 0-glusterd: Received ACC from uuid: c49cfdbe-2af1-4050-bda1-bdd5fd3926b6
[2013-06-18 12:45:11.994527] I [glusterd-rpc-ops.c:607:glusterd3_1_cluster_unlock_cbk] 0-glusterd: Received ACC from uuid: 7e9e1cf3-214e-45c8-aa37-4da0def7fb6b
[2013-06-18 12:45:11.994555] I [glusterd-op-sm.c:2653:glusterd_op_txn_complete] 0-glusterd: Cleared local lock
[2013-06-18 12:45:12.270020] I [socket.c:1798:socket_event_handler] 0-transport: disconnecting now

My attempt manually delete affected replica sets from
/var/lib/glusterd/vols/glustervmstore 
	glustervmstore-fuse.vol
	info
	trusted-glustervmstore-fuse.vol
/var/lib/glusterd/glustershd
	glustershd-server.vol
files totally failed as glusterfs service failed to start at all complaining about unknown keys.  

I am using Semiosis 3.3.1 package on Ubuntu 12.04:
dpkg -l | grep gluster
rc  glusterfs                        3.3.0-1                                    clustered file-system
ii  glusterfs-client                 3.3.1-ubuntu1~precise8                     clustered file-system (client package)
ii  glusterfs-common                 3.3.1-ubuntu1~precise8                     GlusterFS common libraries and translator modules
ii  glusterfs-server                 3.3.1-ubuntu1~precise8                     clustered file-system (server package)

Thank you

-----Original Message-----
From: Vijay Bellur [mailto:vbellur at redhat.com] 
Sent: 18 June 2013 14:33
To: Piliponis, Elvinas : RBB COO
Cc: gluster-users at gluster.org
Subject: Re: [Gluster-users] Unable to remove / replace faulty bricks

On 06/18/2013 11:43 AM, elvinas.piliponis at barclays.com wrote:
> Hello,
>
> When trying to recover from failed node and replace brick with spare 
> one I have trashed my cluster and now it is in stuck state.
>
> Any ideas, how to reintroduce/remove those nodes and bring peace and 
> order to cluster?
>
> There was a pending brick replacement operation from 0031 to 0028 (it 
> is still not commited according to rbstate file)
>
> There was a hardware failure on 0022 node
>
> I was not able to commit replace brick 0031 due to 0022 was not 
> responding and not giving cluster lock to requesting node.
>
> I was not able to start replacement 0022 to 0028  due to pending brick 
> replacement
>
> I have forced peer removal from cluster, hoping that afterwards I 
> would be able to complete operations. Unfortunately I have removes not 
> only
> 0022 but 0031 also.
>
> I have peer probed 0031 successfully. But now gluster volume info and 
> volume status both lists 0031 node. But when I attempt to do a brick 
> operation I do get:
>
> gluster volume remove-brick glustervmstore 0031:/mnt/vmstore/brick 
> 0036:/mnt/vmstore/brick force
>
> Removing brick(s) can result in data loss. Do you want to Continue? 
> (y/n) y
>
> Incorrect brick 0031:/mnt/vmstore/brick for volume glustervmstore
>
> gluster volume replace-brick glustervmstore 0031:/mnt/vmstore/brick 
> 0028:/mnt/vmstore/brick commit force
>
> brick: 0031:/mnt/vmstore/brick does not exist in volume: 
> glustervmstore

Looks like these commands are being rejected from a node where the volume information is not current. Can you please provide glusterd logs from the node where these commands were issued?

Thanks,
Vijay

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