Re: [Gluster-devel] 回复：   glfs_creat this method hang up

Thu, 28 Aug 2014 00:42:07 -0700

Thanks for the bt. Looks like brick process isn't responding here. Please collect logs and statedump info of the brick process while there is a hang. 

To generate statedump, refer to the below link -
https://github.com/gluster/glusterfs/blob/master/doc/debugging/statedump.md

Thanks,
Soumya

On 08/28/2014 11:37 AM, ABC-new wrote:


while hang,stack info:

  Program received signal SIGINT, Interrupt.
0x0000003e1380b43c in pthread_cond_wait@@GLIBC_2.3.2 () from 
/lib64/libpthread.so.0
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.x86_64 
glusterfs-3.4.0.57rhs-1.el6_5.x86_64 glusterfs-api-3.4.0.57rhs-1.el6_5.x86_64 
glusterfs-libs-3.4.0.57rhs-1.el6_5.x86_64 keyutils-libs-1.4-4.el6.x86_64 
krb5-libs-1.10.3-10.el6.x86_64 libcom_err-1.41.12-14.el6.x86_64 
libselinux-2.0.94-5.3.el6.x86_64 openssl-1.0.1e-16.el6_5.14.x86_64 
uuid-1.6.1-10.el6.x86_64 zlib-1.2.3-29.el6.x86_64
(gdb) bt
#0  0x0000003e1380b43c in pthread_cond_wait@@GLIBC_2.3.2 () from 
/lib64/libpthread.so.0
#1  0x00007ffff7b9903b in syncop_lookup () from /usr/lib64/libglusterfs.so.0
#2  0x00007ffff7ddfd59 in glfs_first_lookup_safe () from 
/usr/lib64/libgfapi.so.0
#3  0x00007ffff7ddfde7 in __glfs_first_lookup () from /usr/lib64/libgfapi.so.0
#4  0x00007ffff7ddfe66 in __glfs_active_subvol () from /usr/lib64/libgfapi.so.0
#5  0x00007ffff7de010f in glfs_active_subvol () from /usr/lib64/libgfapi.so.0
#6  0x00007ffff7ddd0ff in glfs_creat () from /usr/lib64/libgfapi.so.0
#7  0x00000000004014c2 in main (argc=1, argv=0x7fffffffe6f8) at 
glfs_example.c:80
thank you.
‍Best Regards,
Lixiaopo


------------------ 原始邮件 ------------------
*发件人:* "360532762";<360532...@qq.com>;
*发送时间:* 2014年8月28日(星期四) 中午1:01
*收件人:* "Soumya Koduri"<skod...@redhat.com>; "Pranith Kumar
Karampuri"<pkara...@redhat.com>;
*抄送:* "Gluster Devel"<gluster-devel@gluster.org>;
*主题:* Re:  [Gluster-devel] glfs_creat this method hang up

Hi~:
Soumya,‍
the glusterfs_example.c is placed in directory /usr/local/glusterfs.
I want to the file name generated by uuid.but now have not to do that
yet,the variable filename is hard
code.e.g."/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV‍".
result is ok.

  [root@localhost glusterfs]# pwd
/usr/include/glusterfs
[root@localhost glusterfs]# gcc -o glusterfs_example glusterfs_example.c
-lgfapi
[root@localhost glusterfs]# ./glusterfs_example dr 192.168.108.150
glfs_init: returned 0
----/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV----
/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV: (0x20241e0) Success
/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV: (0x20241e0) Structure needs
cleaning
read 32, hi there‍

keep the source code not changed and then  I add "-luuid" to gcc ,
compiled result is ok, but while run,hanging occured.

  [root@localhost glusterfs]# gcc -o glusterfs_example
glusterfs_example.c -lgfapi -luuid
[root@localhost glusterfs]# ./glusterfs_example dr 192.168.108.151
glfs_init: returned 0
----/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV----
<------------------------------hanging  here ----------------------------->

  source code :
  #include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "api/glfs.h"
#include "api/glfs-handles.h"
#include <string.h>
#include <time.h>

int
main (int argc, char *argv[])
{
   glfs_t    *fs2 = NULL;
   int        ret = 0;
   glfs_fd_t *fd = NULL;
   glfs_fd_t *fd2 = NULL;
   char       readbuf[32];
   char       writebuf[32];
   char      *filename = "/2fcdec2e-688c-4077-bf96-4a42963dcffc.MOV";

   if (argc != 3) {
     printf ("Expect following args\n\t%s <volname> <hostname>\n", argv[0]);
     return -1;
   }

   fs2 = glfs_new (argv[1]);
   if (!fs2) {
     fprintf (stderr, "glfs_new: returned NULL\n");
     return 1;
   }
   ret = glfs_set_volfile_server (fs2, "tcp", argv[2], 24007);
   ret = glfs_set_logging (fs2, "/dev/stderr", 1);
   ret = glfs_init (fs2);
   fprintf (stderr, "glfs_init: returned %d\n", ret);

   printf("----%s----\n", filename);
   fd = glfs_creat (fs2, filename, O_RDWR, 0644);
   fprintf (stderr, "%s: (%p) %s\n", filename, fd, strerror (errno));

   fd2 = glfs_open (fs2, filename, O_RDWR);
   fprintf (stderr, "%s: (%p) %s\n", filename, fd, strerror (errno));

   sprintf (writebuf, "hi there\n");
   ret = glfs_write (fd, writebuf, 32, 0);

   glfs_lseek (fd2, 0, SEEK_SET);
   ret = glfs_read (fd2, readbuf, 32, 0);
   printf ("read %d, %s", ret, readbuf);

   glfs_close (fd);
   glfs_close (fd2);

    glfs_fini (fs2);

   return ret;
}‍

Thanks,
Lixiaopo
------------------ Original ------------------
*From: * "Soumya Koduri";<skod...@redhat.com>;
*Date: * Wed, Aug 27, 2014 07:42 PM
*To: * "Pranith Kumar Karampuri"<pkara...@redhat.com>;
"ABC-new"<360532...@qq.com>;
*Cc: * "Gluster Devel"<gluster-devel@gluster.org>;
*Subject: * Re: [Gluster-devel] glfs_creat this method hang up

Could you please share your glusterfs_example code and the steps you
have used to compile it and execute the binary? Would like to check how
the gfapi header files are linked.

Thanks,
Soumya

On 08/27/2014 03:22 PM, Pranith Kumar Karampuri wrote:
 > Guys who work with glfs_*, could you guys reply to this question.
 >
 > Pranith
 > On 08/27/2014 03:16 PM, ABC-new wrote:
 >> hi~:
 >>
 >>        while i run the glusterfs example via libgfapi, gcc -c
 >> glusterfs_example -o glfs -luuid
 >>        the method glfs_creat hang up.
 >>
 >>        I want to generate the uuid for file name.
 >>
 >>
 >>    thank you.
 >
 > _______________________________________________
 > Gluster-devel mailing list
 > Gluster-devel@gluster.org
 > http://supercolony.gluster.org/mailman/listinfo/gluster-devel

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