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From Kiril Stankov <ki...@open-net.biz>
Subject Couch stopped working (service was still alive)
Date Sun, 27 Nov 2016 08:46:00 GMT
Hi,

I adore Couch, but one thing always puzzled me is the log files syntax.
I understand it is readable for Erlang people, but not being one of 
them, can, please, someone help me decipher the lines below.

Couch stopped answering queries yesterday, after 6 months of flawless 
operation.
There was nothing unusual on the OS, disk has plenty of space, etc. 
Ubuntu 14. Couch 1.6.

Restarting it fixed the problem.

But I am still unsure if possible data corruption may have occurred and 
what was the root cause of the problem.

Thanks!

[Fri, 25 Nov 2016 14:53:01 GMT] [error] [<0.2510.0>] {error_report,<0.78.0>,
                       {<0.2510.0>,crash_report,
[[{initial_call,{disksup,init,['Argument__1']}},
                          {pid,<0.2510.0>},
                          {registered_name,disksup},
                          {error_info,
                           {exit,
                            {badarg,
[{erlang,port_close,[#Port<0.3152>],[]},
                              {disksup,terminate,2,
                               [{file,"disksup.erl"},{line,164}]},
                              {gen_server,terminate,6,
                               [{file,"gen_server.erl"},{line,719}]},
                              {proc_lib,init_p_do_apply,3,
                               [{file,"proc_lib.erl"},{line,239}]}]},
                            [{gen_server,terminate,6,
                              [{file,"gen_server.erl"},{line,722}]},
                             {proc_lib,init_p_do_apply,3,
                              [{file,"proc_lib.erl"},{line,239}]}]}},
                          {ancestors,[os_mon_sup,<0.79.0>]},
                          {messages,[]},
                          {links,[<0.80.0>]},
                          {dictionary,[]},
                          {trap_exit,true},
                          {status,running},
                          {heap_size,610},
                          {stack_size,27},
                          {reductions,350}],
                         []]}}

[Fri, 25 Nov 2016 14:53:01 GMT] [error] [<0.80.0>] {error_report,<0.78.0>,
                        {<0.80.0>,supervisor_report,
                         [{supervisor,{local,os_mon_sup}},
                          {errorContext,child_terminated},
                          {reason,
                              {badarg,
[{erlang,port_close,[#Port<0.3157>],[]},
                                   {disksup,terminate,2,
[{file,"disksup.erl"},{line,164}]},
                                   {gen_server,terminate,6,
[{file,"gen_server.erl"},{line,719}]},
                                   {proc_lib,init_p_do_apply,3,
[{file,"proc_lib.erl"},{line,239}]}]}},
                          {offender,
                              [{pid,<0.2514.0>},
                               {name,disksup},
                               {mfargs,{disksup,start_link,[]}},
                               {restart_type,permanent},
                               {shutdown,2000},
                               {child_type,worker}]}]}}


[Fri, 25 Nov 2016 14:53:01 GMT] [error] [<0.2514.0>] ** Generic server 
disksup terminating
** Last message in was timeout
** When Server state == {state,100,60000,{unix,linux},[],#Port<0.3157>}
** Reason for termination ==
** {badarg,[{erlang,port_close,[#Port<0.3157>],[]},
             {disksup,terminate,2,[{file,"disksup.erl"},{line,164}]},
{gen_server,terminate,6,[{file,"gen_server.erl"},{line,719}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}

-- 
------------------------------------------------------------------------
*With best regards,*
Kiril Stankov,
CEO


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