Angus,
I make some test program (based on the code coreipcc.c) and i now i sure
that are problems with the mmap systems call on sparc..
Source code of my test program:
#include <stdlib.h>
#include <sys/mman.h>
#include <stdio.h>
#define PATH_MAX 36
int main()
{
int32_t fd;
void *addr_orig;
void *addr;
char path[PATH_MAX];
const char *file = "teste123XXXXXX";
size_t bytes=10024;
snprintf (path, PATH_MAX, "/dev/shm/%s", file);
printf("PATH=%s\n",path);
fd = mkstemp (path);
printf("fd=%d \n",fd);
addr_orig = mmap (NULL, bytes, PROT_NONE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
addr = mmap (addr_orig, bytes, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_SHARED, fd, 0);
printf("ADDR_ORIG:%p ADDR:%p\n",addr_orig,addr);
if (addr != addr_orig) {
printf("Erro");
}
}
Results on x86:
PATH=/dev/shm/teste123XXXXXX
fd=3
ADDR_ORIG:0x7f867d8e6000 ADDR:0x7f867d8e6000
Results on sparc:
PATH=/dev/shm/teste123XXXXXX
fd=3
ADDR_ORIG:0xf7f72000 ADDR:0xffffffff
But im wondering if is really needed to call mmap 2 times ? What are the
reason to call the mmap 2 times, on the second time using the address of the
first?
2011/5/31 Angus Salkeld <asalk...@redhat.com>
> On Tue, May 31, 2011 at 06:25:56PM -0300, william felipe_welter wrote:
> > Thanks Steven,
> >
> > Now im try to run on the MCP:
> > - Uninstall the pacemaker 1.0
> > - Compile and install 1.1
> >
> > But now i have problems to initialize the pacemakerd: Could not
> initialize
> > Cluster Configuration Database API instance error 2
> > Debbuging with gdb i see that the error are on the confdb.. most
> specificaly
> > the errors start on coreipcc.c at line:
> >
> >
> > 448 if (addr != addr_orig) {
> > 449 goto error_close_unlink; <- enter here
> > 450 }
> >
> > Some ideia about what can cause this ?
> >
>
> I tried porting a ringbuffer (www.libqb.org) to sparc and had the same
> failure.
> There are 3 mmap() calls and on sparc the third one keeps failing.
>
> This is a common way of creating a ring buffer, see:
> http://en.wikipedia.org/wiki/Circular_buffer#Exemplary_POSIX_Implementation
>
> I couldn't get it working in the short time I tried. It's probably
> worth looking at the clib implementation to see why it's failing
> (I didn't get to that).
>
> -Angus
>
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs:
> http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
>
--
William Felipe Welter
------------------------------
Consultor em Tecnologias Livres
william.wel...@4linux.com.br
www.4linux.com.br
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