[Pacemaker] [Openais] Linux HA on debian sparc

[william felipe_welter]

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 <asalkeld at 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
>
>
> _______________________________________________
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>
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> Bugs:
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>



-- 
William Felipe Welter
------------------------------
Consultor em Tecnologias Livres
william.welter at 4linux.com.br
www.4linux.com.br
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