[ovirt-users] uncaught exception with engine vm in 3.6.1 selecting hosted_storage

[Alexander Wels]

On Tuesday, December 22, 2015 10:32:22 AM Gianluca Cecchi wrote:
> Hello after updating from 3.6.0 to 3.6.1 my HE environment, I'm not able to
> import/activate the hosted_storage domain because it results anattached
> Moreover I get the popup message
> 
> Uncaught exception occurred. Please try reloading the page. Details:
> (TypeError) __gwt$exception: <skipped>: c is null
> 

Hi, this is a browser side exception so you won't find anything about it in the 
logs on the server. However all is not lost. If you hover your mouse over the 
popup it should show you a tooltip with the entire stack trace (alternatively 
you can open up the browsers development tools (usually ctrl-shift-i) and look 
at the console, the stack trace will be there too).

The stack trace will most likely look completely useless as well since all the 
Javascript is obfuscated. However if you install the following package:

ovirt-engine-webadmin-portal-debuginfo

That will contain a symbolMap file. This file has a mapping from the obfuscated 
symbols to the original code. Once you have the mapping file you can use the 
obfuscated string in the stack trace to look up the original code. That will 
help us determine exactly where the problem is.

I am guessing something went wrong on the backend causing the unattached 
storage domain, which resulted in some unexpected state on the frontend that 
caused the null pointer exception.

If you can provide us with the obfuscated stack trace, we can point to you 
what to look for in the mapping file.

> when I select the line of hosted_storage domain in storage tab. See:
> https://drive.google.com/file/d/0BwoPbcrMv8mvVlc1XzNUZ18yWWs/view?usp=sharin
> g
> 
> I don't find apparently ERROR messages wen I do this, so I don't know where
> to watch.
> 
> On engine, where the db lives, I have under /var/lib/pgsql/data/pg_log
> 
> [root at ractorshe pg_log]# ls -lrt
> total 12
> -rw-------. 1 postgres postgres    0 Dec 16 01:00 postgresql-Wed.log
> -rw-------. 1 postgres postgres    0 Dec 17 01:00 postgresql-Thu.log
> -rw-------. 1 postgres postgres    0 Dec 18 01:00 postgresql-Fri.log
> -rw-------. 1 postgres postgres 7480 Dec 20 00:39 postgresql-Sat.log
> -rw-------. 1 postgres postgres 3488 Dec 20 01:29 postgresql-Sun.log
> -rw-------. 1 postgres postgres    0 Dec 21 01:00 postgresql-Mon.log
> -rw-------. 1 postgres postgres    0 Dec 22 01:00 postgresql-Tue.log
> 
> On Sunday logs, when the engine was started I see
> 
> LOG:  database system was not properly shut down; automatic recovery in
> progress
> LOG:  redo starts at 1/254C6710
> LOG:  record with zero length at 1/254EB6B8
> LOG:  redo done at 1/254EB688
> LOG:  last completed transaction was at log time 2015-12-19
> 23:49:47.920147+00
> LOG:  database system is ready to accept connections
> LOG:  autovacuum launcher started
> ERROR:  insert or update on table "storage_domain_dynamic" violates foreign
> key constraint "fk_stora
> ge_domain_dynamic_storage_domain_static"
> DETAIL:  Key (id)=(00000000-0000-0000-0000-000000000000) is not present in
> table "storage_domain_static".
> CONTEXT:  SQL statement "INSERT INTO
> storage_domain_dynamic(available_disk_size, id, used_disk_size)
>                 VALUES(v_available_disk_size, v_id, v_used_disk_size)"
>         PL/pgSQL function
> insertstorage_domain_dynamic(integer,uuid,integer) line 3 at SQL statement
> STATEMENT:  select * from insertstorage_domain_dynamic($1, $2, $3) as result
> 
> and then many lines of kind
> 
> LOG:  autovacuum: found orphan temp table "pg_temp_8"."tt_temp22" in
> database "engine"
> 
> so messages related to domains and could be the reason of the exception and
> of the inability of importing/attaching my HE storage domain.
> 
> Let me know if I can provide more logs or output of queries from the
> database.
> 
> Gianluca