[Gluster-users] Replica brick not working

[Ravishankar N]

On 12/08/2016 10:43 AM, Atin Mukherjee wrote:
> From the log snippet:
>
> [2016-12-07 09:15:35.677645] I [MSGID: 106482] 
> [glusterd-brick-ops.c:442:__glusterd_handle_add_brick] 0-management: 
> Received add brick req
> [2016-12-07 09:15:35.677708] I [MSGID: 106062] 
> [glusterd-brick-ops.c:494:__glusterd_handle_add_brick] 0-management: 
> replica-count is 2
> [2016-12-07 09:15:35.677735] E [MSGID: 106291] 
> [glusterd-brick-ops.c:614:__glusterd_handle_add_brick] 0-management:
>
> The last log entry indicates that we hit the code path in 
> gd_addbr_validate_replica_count ()
>
>                 if (replica_count == volinfo->replica_count) {
>                         if (!(total_bricks % volinfo->dist_leaf_count)) {
>                                 ret = 1;
>                                 goto out;
> }
>                 }
>

It seems unlikely that this snippet was hit because we print the E 
[MSGID: 106291] in the above message only if ret==-1.
gd_addbr_validate_replica_count() returns -1 and yet not populates 
err_str only when in volinfo->type doesn't match any of the known volume 
types, so volinfo->type is corrupted perhaps?

-Ravi
> @Pranith, Ravi - Milos was trying to convert a dist (1 X 1) volume to 
> a replicate (1 X 2) using add brick and hit this issue where add-brick 
> failed. The cluster is operating with 3.7.6. Could you help on what 
> scenario this code path can be hit? One straight forward issue I see 
> here is missing err_str in this path.
>
>