Re: Error on initdb with 7.4RC2 - Mailing list pgsql-general

El Dom 16 Nov 2003 16:56, escribió:
> Martin Marques <martin@bugs.unl.edu.ar> writes:
> > El Dom 16 Nov 2003 15:23, Tom Lane escribió:
> >> See sysctl.  But what is the current value?  I've never heard of a Linux
> >> installation with small SEMVMX.
>
> > martin@bugs:~/latex$ cat /proc/sys/kernel/sem
> > 250     32000   32      128
>
> > This is a Linux Kernel for SPARC (Debian) that came with the distribution
(no
> > recompile done yet here).
>
> As far as I can tell, SEMVMX isn't readable or writable via /proc or
> sysctl in Linux at all; at least it is not visible in my Red Hat 8.0
> installation.  So it's really hard to see why it'd be different in
> your installation than everywhere else.
>
> Just to make sure we're barking up the right tree, would you see whether
> it helps to change this line in src/backend/port/sysv_sema.c:
>
> #define PGSemaMagic          537             /* must be less than SEMVMX */
>
> Try making it 100 or so instead of 537.

Same problem. Changed it and I got this:

bugs:/home/martin/basura/postgresql-7.4RC2# su - postgres
postgres@bugs:~$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data -E
latin1
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory /usr/local/pgsql/data... ok
creating directory /usr/local/pgsql/data/base... ok
creating directory /usr/local/pgsql/data/global... ok
creating directory /usr/local/pgsql/data/pg_xlog... ok
creating directory /usr/local/pgsql/data/pg_clog... ok
selecting default max_connections... 10
selecting default shared_buffers... 50
creating configuration files... ok
creating template1 database in /usr/local/pgsql/data/base/1... FATAL:
semctl(7766033, 16, SETVAL, 99) failed: Invalid argument

initdb: failed
initdb: removing data directory "/usr/local/pgsql/data"


Now the interesting part of all this is that, with all the initdb that failed,
lots of semaphores where been used, so when I tried this last initdb at first
I got this, which looks like I'm out of semaphores, not as in the message
from above:

postgres@bugs:~$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data -E
latin1
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory /usr/local/pgsql/data... ok
creating directory /usr/local/pgsql/data/base... ok
creating directory /usr/local/pgsql/data/global... ok
creating directory /usr/local/pgsql/data/pg_xlog... ok
creating directory /usr/local/pgsql/data/pg_clog... ok
selecting default max_connections... 10
selecting default shared_buffers... 50
creating configuration files... ok
creating template1 database in /usr/local/pgsql/data/base/1... FATAL:  could
not create semaphores: No space left on device
DETAIL:  Failed system call was semget(129, 17, 03600).
HINT:  This error does *not* mean that you have run out of disk space.
        It occurs when either the system limit for the maximum number of
semaphore sets (SEMMNI), or the system wide maximum number of semaphores
(SEMMNS), would be exceeded.  You need to raise the respective kernel
parameter.  Alternatively, reduce PostgreSQL's consumption of semaphores by
reducing its max_connections parameter (currently 10).
        The PostgreSQL documentation contains more information about
configuring your system for PostgreSQL.

initdb: failed
initdb: removing data directory "/usr/local/pgsql/data"


--
select 'mmarques' || '@' || 'unl.edu.ar' AS email;
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Martín Marqués                  |        mmarques@unl.edu.ar
Programador, Administrador, DBA |       Centro de Telemática
                       Universidad Nacional
                            del Litoral
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