[Gluster-devel] Rebalance failure wrt trashcan

[SATHEESARAN]

On 05/14/2015 12:55 PM, Vijay Bellur wrote:
> On 05/14/2015 09:00 AM, SATHEESARAN wrote:
>> Hi All,
>>
>> I was using glusterfs-3.7 beta2 build (
>> glusterfs-3.7.0beta2-0.0.el6.x86_64 )
>> I have seen rebalance failure in one of the node.
>>
>> [2015-05-14 12:17:03.695156] E
>> [dht-rebalance.c:2368:gf_defrag_settle_hash] 0-vmstore-dht: fix layout
>> on /.trashcan/internal_op failed
>> [2015-05-14 12:17:03.695636] E [MSGID: 109016]
>> [dht-rebalance.c:2528:gf_defrag_fix_layout] 0-vmstore-dht: Fix layout
>> failed for /.trashcan
>>
>> Does it have any impact ?
>>
>
> I don't think there should be any impact due to this. rebalance should 
> continue fine without any problems. Do let us know if you observe the 
> behavior to be otherwise.
>
> -Vijay
I tested the same functionally and I don't find any impact as such, but 
the 'gluster volume status <vol-name>' reports the rebalance as a FAILURE.
Any tool ( for example oVirt ), consuming the output from 'gluster 
volume status <vol> --xml'  would report the rebalance operation as FAILURE

[root@ ~]# gluster volume rebalance vmstore start
volume rebalance: vmstore: success: Rebalance on vmstore has been 
started successfully. Use rebalance status command to check status of 
the rebalance process.
ID: 68a12fc9-acd5-4f24-ba2d-bfc070ad5668

[root@~]# gluster volume rebalance vmstore status
                                     Node Rebalanced-files size       
scanned      failures       skipped status   run time in secs
                                ---------      ----------- -----------   
-----------   -----------   ----------- ------------     --------------
                                localhost                0 
0Bytes             2             0             0 completed               
0.00
                              10.70.37.58                0 
0Bytes             0             3             0 failed               0.00
volume rebalance: vmstore: success:

[root@~]# gluster volume status vmstore
Status of volume: vmstore
Gluster process                             TCP Port  RDMA Port Online  Pid
------------------------------------------------------------------------------
......

Task Status of Volume vmstore
------------------------------------------------------------------------------
Task                 : Rebalance
ID                   : 68a12fc9-acd5-4f24-ba2d-bfc070ad5668
Status               : failed

Snip from --xml tasks :
<tasks>
           <task>
             <type>Rebalance</type>
<id>68a12fc9-acd5-4f24-ba2d-bfc070ad5668</id>
             <status>4</status>
             <statusStr>failed</statusStr>
           </task>
</tasks>

Even this is the case with remove-brick with data migration too

-- sas