Re: glusterd-locks.c:572:glusterd_mgmt_v3_lock

Paolo Margara <paolo.margara@xxxxxxxxx> · Wed, 26 Jul 2017 10:11:40 +0200



    Hi Atin,
    I've initially disabled gluster status check on all nodes except
      on one on my nagios instance as you recommended but this issue
      happens again.
    So I've disabled it on each nodes but the error happens again,
      currently only oVirt is monitoring gluster.
    I cannot modify this behaviour in the oVirt GUI, there is
      anything that could I do from the gluster prospective to solve
      this issue? Considering that 3.8 is near EOL also upgrading to
      3.10 could be an option.
    

    Greetings,
        Paolo

    
    Il 20/07/2017 15:37, Paolo Margara ha
      scritto:

    
      OK, on my nagios instance I've disabled gluster status check on
        all nodes except on one, I'll check if this is enough.
      Thanks,
          Paolo

      
      Il 20/07/2017 13:50, Atin Mukherjee
        ha scritto:

      
        So from the cmd_history.logs across all the nodes
          it's evident that multiple commands on the same volume are run
          simultaneously which can result into transactions collision
          and you can end up with one command succeeding and others
          failing. Ideally if you are running volume status command for
          monitoring it's suggested to be run from only one node.

        
          On Thu, Jul 20, 2017 at 3:54 PM,
            Paolo Margara <paolo.margara@xxxxxxxxx>
            wrote:

            
                In attachment the requested logs for all the three
                  nodes.
                thanks,
                    Paolo

                
                    Il
                      20/07/2017 11:38, Atin Mukherjee ha scritto:

                    
                      Please share the cmd_history.log
                        file from all the storage nodes.

                      
                        On Thu, Jul 20, 2017 at
                          2:34 PM, Paolo Margara <paolo.margara@xxxxxxxxx>
                          wrote:

                          
                              Hi list,
                              recently I've noted a strange behaviour
                                of my gluster storage, sometimes while
                                executing a simple command like "gluster
                                volume status vm-images-repo" as a
                                response I got "Another transaction is
                                in progress for vm-images-repo. Please
                                try again after sometime.". This
                                situation does not get solved simply
                                waiting for but I've to restart glusterd
                                on the node that hold (and does not
                                release) the lock, this situation occur
                                randomly after some days. In the
                                meanwhile, prior and after the issue
                                appear, everything is working as
                                expected.
                              I'm using gluster 3.8.12 on CentOS 7.3,
                                the only relevant information that I
                                found on the log file
                                (etc-glusterfs-glusterd.vol.log) of
                                my three nodes are the following:
                              * node1, at the moment the issue
                                begins:
                              [2017-07-19 15:07:43.130203] W
                                [glusterd-locks.c:572:glusterd_mgmt_v3_lock]
                                (-->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x3a00f)
                                [0x7f373f25f00f]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x2ba25)
                                [0x7f373f250a25]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0xd048f)
                                [0x7f373f2f548f] ) 0-management: Lock
                                for vm-images-repo held by
                                2c6f154f-efe3-4479-addc-b2021aa9d5df

                                [2017-07-19 15:07:43.128242] I [MSGID:
                                106499] [glusterd-handler.c:4349:__glusterd_handle_status_volume]
                                0-management: Received status volume req
                                for volume vm-images-repo

                                [2017-07-19 15:07:43.130244] E [MSGID:
                                106119] [glusterd-op-sm.c:3782:glusterd_op_ac_lock]
                                0-management: Unable to acquire lock for
                                vm-images-repo

                                [2017-07-19 15:07:43.130320] E [MSGID:
                                106376] [glusterd-op-sm.c:7775:glusterd_op_sm]
                                0-management: handler returned: -1

                                [2017-07-19 15:07:43.130665] E [MSGID:
                                106116] [glusterd-mgmt.c:135:gd_mgmt_v3_collate_errors]
                                0-management: Locking failed on
                                virtnode-0-1-gluster. Please check log
                                file for details.

                                [2017-07-19 15:07:43.131293] E [MSGID:
                                106116] [glusterd-mgmt.c:135:gd_mgmt_v3_collate_errors]
                                0-management: Locking failed on
                                virtnode-0-2-gluster. Please check log
                                file for details.

                                [2017-07-19 15:07:43.131360] E [MSGID:
                                106151] [glusterd-syncop.c:1884:gd_sync_task_begin]
                                0-management: Locking Peers Failed.

                                [2017-07-19 15:07:43.132005] E [MSGID:
                                106116] [glusterd-mgmt.c:135:gd_mgmt_v3_collate_errors]
                                0-management: Unlocking failed on
                                virtnode-0-2-gluster. Please check log
                                file for details.

                                [2017-07-19 15:07:43.132182] E [MSGID:
                                106116] [glusterd-mgmt.c:135:gd_mgmt_v3_collate_errors]
                                0-management: Unlocking failed on
                                virtnode-0-1-gluster. Please check log
                                file for details.
                              * node2, at the moment the issue
                                begins:
                              [2017-07-19 15:07:43.131975] W
                                [glusterd-locks.c:572:glusterd_mgmt_v3_lock]
                                (-->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x3a00f)
                                [0x7f17b5b9e00f]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x2ba25)
                                [0x7f17b5b8fa25]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0xd048f)
                                [0x7f17b5c3448f] ) 0-management: Lock
                                for vm-images-repo held by
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16

                                [2017-07-19 15:07:43.132019] E [MSGID:
                                106119] [glusterd-op-sm.c:3782:glusterd_op_ac_lock]
                                0-management: Unable to acquire lock for
                                vm-images-repo

                                [2017-07-19 15:07:43.133568] W
                                [glusterd-locks.c:686:glusterd_mgmt_v3_unlock]
                                (-->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x3a00f)
                                [0x7f17b5b9e00f]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x2b712)
                                [0x7f17b5b8f712]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0xd082a)
                                [0x7f17b5c3482a] ) 0-management: Lock
                                owner mismatch. Lock for vol
                                vm-images-repo held by
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16

                                [2017-07-19 15:07:43.133597] E [MSGID:
                                106118] [glusterd-op-sm.c:3845:glusterd_op_ac_unlock]
                                0-management: Unable to release lock for
                                vm-images-repo

                                The message "E [MSGID: 106376]
                                [glusterd-op-sm.c:7775:glusterd_op_sm]
                                0-management: handler returned: -1"
                                repeated 3 times between [2017-07-19
                                15:07:42.976193] and [2017-07-19
                                15:07:43.133646]

                              
                              * node3, at the moment the issue
                                begins:
                              [2017-07-19 15:07:42.976593] I [MSGID:
                                106499] [glusterd-handler.c:4349:__glusterd_handle_status_volume]
                                0-management: Received status volume req
                                for volume vm-images-repo

                                [2017-07-19 15:07:43.129941] W
                                [glusterd-locks.c:572:glusterd_mgmt_v3_lock]
                                (-->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x3a00f)
                                [0x7f6133f5b00f]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x2ba25)
                                [0x7f6133f4ca25]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0xd048f)
                                [0x7f6133ff148f] ) 0-management: Lock
                                for vm-images-repo held by
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16

                                [2017-07-19 15:07:43.129981] E [MSGID:
                                106119] [glusterd-op-sm.c:3782:glusterd_op_ac_lock]
                                0-management: Unable to acquire lock for
                                vm-images-repo

                                [2017-07-19 15:07:43.130034] E [MSGID:
                                106376] [glusterd-op-sm.c:7775:glusterd_op_sm]
                                0-management: handler returned: -1

                                [2017-07-19 15:07:43.130131] E [MSGID:
                                106275] [glusterd-rpc-ops.c:876:glusterd_mgmt_v3_lock_peers_cbk_fn]
                                0-management: Received mgmt_v3 lock RJT
                                from uuid:
                                2c6f154f-efe3-4479-addc-b2021aa9d5df

                                [2017-07-19 15:07:43.130710] W
                                [glusterd-locks.c:686:glusterd_mgmt_v3_unlock]
                                (-->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x3a00f)
                                [0x7f6133f5b00f]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0x2b712)
                                [0x7f6133f4c712]
                                -->/usr/lib64/glusterfs/3.8.12/xlator/mgmt/glusterd.so(+0xd082a)
                                [0x7f6133ff182a] ) 0-management: Lock
                                owner mismatch. Lock for vol
                                vm-images-repo held by
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16

                                [2017-07-19 15:07:43.130733] E [MSGID:
                                106118] [glusterd-op-sm.c:3845:glusterd_op_ac_unlock]
                                0-management: Unable to release lock for
                                vm-images-repo

                                [2017-07-19 15:07:43.130771] E [MSGID:
                                106376] [glusterd-op-sm.c:7775:glusterd_op_sm]
                                0-management: handler returned: -1
                              The thing that is really strange is
                                that in this case the uuid of node3 is
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16!
                              The mapping nodename-uuid is:
                              * (node1) virtnode-0-0-gluster:
                                2c6f154f-efe3-4479-addc-b2021aa9d5df
                              * (node2) virtnode-0-1-gluster:
                                e93ebee7-5d95-4100-a9df-4a3e60134b73
                              * (node3) virtnode-0-2-gluster:
                                d9047ecd-26b5-467b-8e91-50f76a0c4d16

                                
                              In this case restarting glusterd on
                                node3 usually solve the issue.
                              What could be the root cause of this
                                behavior? How can I fix this once
                                    and for all?
                              If
                                    needed I could provide the full log
                                    file.

                                  
                              Greetings,
                                  Paolo Margara

                              
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