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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">That worked! Thanks!<br>
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<font size="1">Ben Jeurissen, Ph.D.</font></div>
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<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">Post-doctoral researcher</font></div>
<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">Vision Lab, Dept. of Physics</font></div>
<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">University of Antwerp</font></div>
<div><font size="1">Universiteitsplein 1, N.1.18</font></div>
<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">B-2610 Wilrijk, Belgium</font></div>
<div><font size="1">Phone: +32 3 265 24 77</font></div>
<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">Email: ben.jeurissen@uantwerpen.be</font></div>
<div style="font-weight:normal; color:rgb(0,0,0)"><font size="1">Url: <a href="http://visielab.ua.ac.be/people/ben-jeurissen" target="_blank">http://visielab.ua.ac.be/people/ben-jeurissen</a></font></div>
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<div id="divRpF657663" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Ravishankar N [ravishankar@redhat.com]<br>
<b>Sent:</b> 18 July 2014 09:14<br>
<b>To:</b> Willem Jan Palenstijn; gluster-users@gluster.org<br>
<b>Cc:</b> Jeurissen Ben<br>
<b>Subject:</b> Re: [Gluster-users] unexpected ENOENT on symlinks<br>
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<div class="moz-cite-prefix">On 07/17/2014 07:44 PM, Willem Jan Palenstijn wrote:<br>
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<pre>Hi,
I'm running into unexpected behaviour with symlinks on a glusterfs volume
(3.5.1 on Arch Linux), where sometimes accessing a symlink on the volume
results in ENOENT (No such file or directory).
The following consistently reproduces it for me from a shell. At the end of
this post I've also included a short snippet of C that shows this inconsistency
between repeated readlink() syscalls.
$ ln -s x y
$ ls -al
ls: cannot read symbolic link y: No such file or directory
total 16
drwxr-xr-x 2 wjp wjp 4096 Jul 17 15:40 .
drwx------ 7 wjp wjp 4096 Jul 17 15:40 ..
lrwxrwxrwx 1 wjp wjp 1 Jul 17 15:40 y
$ ls -l y
lrwxrwxrwx 1 wjp wjp 1 Jul 17 15:40 y -> x
Is this indeed unexpected, and if so, what would be a good next step to
investigate this?
The setup is glusterfs 3.5.1 on Arch Linux, with a stripe glusterfs volume
consisting of two bricks.
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Hi Willem,<br>
<a class="moz-txt-link-freetext" href="http://review.gluster.org/#/c/8153/" target="_blank">http://review.gluster.org/#/c/8153/</a> fixes the
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=1111454" target="_blank">issue</a>. It should be available in the 3.5.2 release.<br>
Thanks,<br>
Ravi<br>
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<blockquote type="cite">
<pre>Thanks,
Willem Jan
----
$ gcc -o t test_glusterfs_symlink.c && ./t
First readlink: -1 (errno 2)
Second readlink: 1
$ cat test_glusterfs_symlink.c
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <dirent.h>
#include <errno.h>
int main()
{
FILE *f;
int r1, r2, r3, e2, e3;
struct dirent *p;
DIR *d;
char buf[2];
struct stat s;
r1 = symlink("x", "y");
if (r1 != 0) {
printf("Failed to create symlink\n");
return -1;
}
d = opendir(".");
p = readdir(d);
r2 = readlink("y", buf, 2);
e2 = errno;
r3 = readlink("y", buf, 2);
e3 = errno;
printf("First readlink: %d", r2);
if (r2 < 0) printf(" (errno %d)", e2);
printf("\nSecond readlink: %d", r3);
if (r3 < 0) printf(" (errno %d)", e3);
printf("\n");
unlink("y");
return 0;
}
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</pre>
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