[sheepdog] GLIBC issue
Bruno Silva
bruno.ufpe at gmail.com
Mon Nov 12 17:44:36 CET 2012
Morita,
First of all, thanks a lot for your answer.
Actually, I have tried your suggestion, but without success. Apparently,
there is another function that belongs to the newer GLIBC and is not part
of the older one.
“Glibc 2.7 doesn't contain timerfd, signalfd, and eventfd”. I’ve
substituted the three wrapper functions that call directly the system call.
For instance,
#include <sys/syscall.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdint.h>
#ifndef __NR_eventfd2
#if defined(__x86_64__)
#define __NR_eventfd2 290
#elif defined(__i386__)
#define __NR_eventfd2 328
#else
#error "Can't define __NR_eventfd2 for your architecture."
#endif
#endif
typedef uint64_t eventfd_t;
#define EFD_SEMAPHORE 1
#define EFD_CLOEXEC 02000000
#define EFD_NONBLOCK 04000
int eventfd(unsigned int, int);
int eventfd_read(int, eventfd_t *);
int eventfd_write(int, eventfd_t);
inline int eventfd_read(int fd, eventfd_t *value)
{
return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
}
inline int eventfd(unsigned int initval, int flags)
{
return syscall(__NR_eventfd2, initval, flags);
}
inline int eventfd_write(int fd, eventfd_t value)
{
return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
}
The code just works on local machine. It doesn’t work on the older GLIBC
machine and for some reason the GLIBC dependency remains. I put this mark
<<<<<<<<< GLIBC DEPENDENCY >>>>>>>>> to show the dependecy.
#ldd –v sheep
root at ubuntu:/opt/apps/corosync/sbin# ldd -v sheep
linux-gate.so.1 => (0xb777c000)
libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xb774d000)
libcpg.so.4 => /usr/lib/libcpg.so.4 (0xb7745000)
libcfg.so.4 => /usr/lib/libcfg.so.4 (0xb773d000)
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb7593000)
/lib/ld-linux.so.2 (0xb777d000)
libcoroipcc.so.4 => /usr/lib/libcoroipcc.so.4 (0xb758c000)
Version information:
./sheep:
libcfg.so.4 (COROSYNC_CFG_0.82) => /usr/lib/libcfg.so.4
libcpg.so.4 (COROSYNC_CPG_1.0) => /usr/lib/libcpg.so.4
libpthread.so.0 (GLIBC_2.1) => /lib/i386-linux-gnu/libpthread.so.0
libpthread.so.0 (GLIBC_2.2) => /lib/i386-linux-gnu/libpthread.so.0
libpthread.so.0 (GLIBC_2.3.2) => /lib/i386-linux-gnu/libpthread.so.0
libpthread.so.0 (GLIBC_2.0) => /lib/i386-linux-gnu/libpthread.so.0
libc.so.6 (GLIBC_2.3) => /lib/i386-linux-gnu/libc.so.6
<<<<<<<<< GLIBC DEPENDENCY >>>>>>>>>
libc.so.6 (GLIBC_2.10) => /lib/i386-linux-gnu/libc.so.6
<<<<<<<<< GLIBC DEPENDENCY >>>>>>>>>
libc.so.6 (GLIBC_2.2) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.3.2) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.7) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.1) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.3.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.0) => /lib/i386-linux-gnu/libc.so.6
/lib/i386-linux-gnu/libpthread.so.0:
ld-linux.so.2 (GLIBC_2.1) => /lib/ld-linux.so.2
ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2
ld-linux.so.2 (GLIBC_2.3) => /lib/ld-linux.so.2
libc.so.6 (GLIBC_2.3.2) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.1.3) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.1) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_PRIVATE) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.0) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.2) => /lib/i386-linux-gnu/libc.so.6
/usr/lib/libcpg.so.4:
libc.so.6 (GLIBC_2.3.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.1.3) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.0) => /lib/i386-linux-gnu/libc.so.6
libcoroipcc.so.4 (COROSYNC_COROIPCC_3.0) =>
/usr/lib/libcoroipcc.so.4
libpthread.so.0 (GLIBC_2.0) => /lib/i386-linux-gnu/libpthread.so.0
/usr/lib/libcfg.so.4:
libc.so.6 (GLIBC_2.3.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.1.3) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.0) => /lib/i386-linux-gnu/libc.so.6
libcoroipcc.so.4 (COROSYNC_COROIPCC_3.0) =>
/usr/lib/libcoroipcc.so.4
libpthread.so.0 (GLIBC_2.0) => /lib/i386-linux-gnu/libpthread.so.0
/lib/i386-linux-gnu/libc.so.6:
ld-linux.so.2 (GLIBC_2.3) => /lib/ld-linux.so.2
ld-linux.so.2 (GLIBC_PRIVATE) => /lib/ld-linux.so.2
ld-linux.so.2 (GLIBC_2.1) => /lib/ld-linux.so.2
/usr/lib/libcoroipcc.so.4:
libc.so.6 (GLIBC_2.1.3) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.4) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.0) => /lib/i386-linux-gnu/libc.so.6
libc.so.6 (GLIBC_2.3.4) => /lib/i386-linux-gnu/libc.so.6
libpthread.so.0 (GLIBC_2.2) => /lib/i386-linux-gnu/libpthread.so.0
libpthread.so.0 (GLIBC_2.1) => /lib/i386-linux-gnu/libpthread.so.0
libpthread.so.0 (GLIBC_2.0) => /lib/i386-linux-gnu/libpthread.so.0
2012/10/22 Gustavo Callou <grac at cin.ufpe.br>
> Outro caminho... p rodar o sheepdog
> ---------- Forwarded message ----------
> From: "MORITA Kazutaka" <morita.kazutaka at lab.ntt.co.jp>
> Date: Oct 21, 2012 10:56 PM
> Subject: Re: [sheepdog] GLIBC issue
> To: "Gustavo Callou" <grac at cin.ufpe.br>
> Cc: <sheepdog at lists.wpkg.org>
>
> At Fri, 19 Oct 2012 14:44:00 -0300,
>
> Gustavo Callou wrote:
> >
> > Dear Sheepdog Development Team,
> >
> > I’ve been conducting experiments with Sheepdog. I have already tested it
> > with Ubuntu 12.04 machines and the Sheepdog worked well. I would like to
> > conduct other experiments using a specific environment that uses GLIBC
> 2.7.
> > I know that Sheepdog requires the version 2.9 or later of the GLIBC.
> > However, in this particular case, I’m not able to update the version of
> the
> > GLIBC. I was wondering if you could provide me some suggestions to deal
> > with such issue. Thanks a lot in advance.
>
> Glibc 2.7 doesn't contain timerfd, signalfd, and eventfd. If your
> kernel supports them, I think you can use Sheepdog by defining all
> relevant functions and structures, for example, as follows.
>
> #define __NR_signalfd 282
>
> int signalfd(int fd, const sigset_t *mask, int flags)
> {
> return syscall(__NR_signalfd, fd, mask, flags);
> }
>
>
> Thanks,
>
> Kazutaka
>
--
Bruno Silva
Engenheiro da Computação.
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