[erlang-questions] Trouble starting mnesia on R14B02/3 node with a R14B01 node connected

Dan Gudmundsson <>
Mon May 30 15:00:12 CEST 2011


That is a bug in R14B03, I currently fail to understand how it can go wrong
on R14B02..

Did you try R14B03 first?
There is a missing make rule, which doesn't trigger a remake if the .hrl
file is updated,
old clearcase problem which fixed those kind of build dependencies
automagicly.

/Dan

On Mon, May 30, 2011 at 11:59 AM, Ferenc Holzhauser <
> wrote:

> Hi,
>
> After updating Erlang from R14B01 to R14B02 (or B03, tried both) on one
> node of a 2 node setup I had trouble starting mnesia.
>
> Eshell V5.8.3  (abort with
> ^G)
>
> (node2)1> mnesia:start().
>
>
> =ERROR REPORT==== 26-May-2011::13:54:06
> ===
> Mnesia('node2'): ** ERROR ** (core dumped to file:
> "/home/me/backend/MnesiaCore.node2_1306_410846_451973")
>  ** FATAL ** Failed to merge schema:
> {aborted,
>
> {function_clause,
>
> [{mnesia_schema,cs2list,
>
> [{cstruct,schema,set,[],
>                                            ['node2',
>                                             'node1'],
>
> [],0,read_write,[],[],false,schema,
>
> [table,cstruct],
>
> [],[],
>
> {{1300,896724,827143},
>                                             'node1'},
>
> {{4,0},
>                                             {'node2',
>
> {1302,780884,609311}}}}]},
>
> {mnesia_schema,do_merge_schema,1},
>
> {mnesia_tm,apply_fun,3},
>
> {mnesia_tm,execute_transaction,5},
>
> {mnesia_schema,schema_coordinator,
>
> 3}]}}
>
>
>
> At the end I stopped both nodes, updated Erlang then I could start both of
> them.
>
> Is it a bug or did I do something wrong when trying to update them one by
> one?
>
> Thanks in advance,
> Ferenc
>
>
>
>
>
>
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> 
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>
>
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