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| bhyde at pobox.com |
 Posted: Tue Dec 15, 1998 6:32 pm |
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Guest
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Is there an master index of symbols, were in I might look
up "node_not_running"?
The net_kernel man seems to discuss starting and stoping
something, but clearly it's not the node in question
in the error message below.
after:
application:load({application,mnesia,[{env,[{dir,'/tmp/mdb'}]}]}).
mnesia:start().
mnesia:create_schema([node()]).
and various other kicking of the tires...
(watson_at_zap)7> mnesia:create_table(funky,[]).
{aborted,{node_not_running,watson_at_zap}}
Maybe this is useful...
(watson_at_zap)8> mnesia:info().
===> System info in version [], debug level = none <===
opt_disc. Directory "/tmp/mdb" is used.
use fallback at restart = true
running db nodes = []
stopped db nodes = [nonode_at_nohost]
ok
Thanks for your help. - ben
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| mbjk at eecs.umich.edu |
| Posted: Tue Dec 15, 1998 7:11 pm |
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Guest
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Ben Hyde <bhyde_at_pobox.com> wrote:
>
> Is there an master index of symbols, were in I might look
> up "node_not_running"?
There is no such thing. A function can return any atom, and assign
any meaning to it. However, Mnesia lists all atoms it uses as error
messages; check mnesia(3) (try erl -man mnesia).
node_not_running supposedly means "Node not running", according to the
manual ;-)
> The net_kernel man seems to discuss starting and stoping
> something, but clearly it's not the node in question
> in the error message below.
>
> after:
>
> application:load({application,mnesia,[{env,[{dir,'/tmp/mdb'}]}]}).
This one is the root of the evil... This means that instead of the
application specification in mnesia/ebin/mnesia.app, [{env,[..]}] is
used. The bad thing with this specification is that it lacks a start
function. So when the application mnesia is started (by
mnesia:start()), there is no start function and thus no mnesia
processes are started.
So the error message node_not_running probably means that *mnesia* is
not running at this node.
Try this instead:
clip ~> erl -sname a -mnesia dir '"/tmp/mdb"'
Erlang (JAM) emulator version 47.4.0
Eshell V47.4.0 (abort with ^G)
(a_at_clip)1> mnesia:create_schema([node()]).
ok
(a_at_clip)2> mnesia:start().
ok
(a_at_clip)3> mnesia:create_table(funky,[]).
{atomic,ok}
/martin
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| hakan at erix.ericsson.se |
| Posted: Wed Dec 16, 1998 8:52 am |
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On Tue, 15 Dec 1998, Martin Bjorklund wrote:
Martin> Try this instead:
Martin>
Martin> clip ~> erl -sname a -mnesia dir '"/tmp/mdb"'
Martin> Erlang (JAM) emulator version 47.4.0
Martin>
Martin> Eshell V47.4.0 (abort with ^G)
Martin> (a_at_clip)1> mnesia:create_schema([node()]).
Martin> ok
Martin> (a_at_clip)2> mnesia:start().
Martin> ok
Martin> (a_at_clip)3> mnesia:create_table(funky,[]).
Martin> {atomic,ok}
Martin>
Martin>
Martin> /martin
Martin>
Please, note the order of the calls to mnesia:start/0 and
mnesia:create_schema/1 in Martin's reply.
In Ben's original posting the calls was in reverse order. As an
effect of this, Mnesia was started in a disk less mode. Later when the
mnesia:create_schema/1 was invoked, in order to initiate the database
on disk, it failed since Mnesia already was started.
/H |
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