[Linux-cluster] What can cause dlm_pthread_init to generate an errno 13?

[Josef Whiter]

AFAIK not yet, I know the work has been done, but if anything its in CVS, it
hasn't been actually released yet.

Josef

On Thu, Nov 02, 2006 at 01:05:36PM -0500, Eric Johnson wrote:
> It works as root.  I know that much.  I guess I thought it was
> possible to hit the dlm as just a plain user.  No?
> 
> -Eric
> 
> On 11/2/06, Josef Whiter <jwhiter at redhat.com> wrote:
> >Run it as root.
> >
> >Josef
> >
> >On Thu, Nov 02, 2006 at 12:51:34PM -0500, Eric Johnson wrote:
> >> Hi -
> >>
> >> I must be very dumb.  I'm unable to do what I would consider to be the
> >> "Hello World" of user mode dlm.
> >>
> >> [ejohnson at gfsa01:~/projects/dlm-simple] cat foo.cpp
> >> #include <errno.h>
> >> #include <stdio.h>
> >> #include <sys/types.h>
> >> #include <sys/stat.h>
> >> #include <stdint.h>
> >>
> >> extern "C" {
> >>  #include <libdlm.h>
> >> }
> >> #include <pthread.h>
> >>
> >> main(int argc, char **argv)
> >> {
> >>  printf("hello world\n");
> >>  char lockName[] = "foobar" ;
> >>
> >>  int initStatus = dlm_pthread_init();
> >>  printf("initStatus: %d, errno: %d\n",initStatus,errno);
> >>
> >>  int lockid =0 ;
> >>  int status = lock_resource( lockName, LKM_EXMODE, 0, &lockid ) ;
> >>  printf("status: %d, errno: %d\n",status,errno);
> >> }
> >> [ejohnson at gfsa01:~/projects/dlm-simple] touch foo.cpp
> >>
> >> [ejohnson at gfsa01:~/projects/dlm-simple] make
> >> g++ -D_REENTRANT foo.cpp -o foo -ldlm -lpthread
> >> ./foo/home/dev/util/linux64/bin/ld: skipping incompatible
> >> /home/dev/util/linux64/lib/gcc/x86_64-unknown-linux-gnu/4.1.1/libstdc++.a
> >> when searching for -lstdc++
> >>
> >> [ejohnson at gfsa01:~/projects/dlm-simple] ./foo
> >> hello world
> >> initStatus: -1, errno: 13
> >> status: -1, errno: 13
> >>
> >> I have googled around endlessly and been unable to find any insight as
> >> to what it is that I'm missing.
> >>
> >> I'll gladly take a terse - "Hey knucklehead, go read this page in more
> >> detail."
> >>
> >> -Eric
> >>
> >> --
> >> Linux-cluster mailing list
> >> Linux-cluster at redhat.com
> >> https://www.redhat.com/mailman/listinfo/linux-cluster
> >
> >--
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> 
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