The following has be reported by IBM LTC:  
df FileSystem name doesn't match getmntent's mnt_fsname
Please fill in each of the sections below.

Hardware Environment:
Intel 32 bit (doesn't really matter)

Software Environment:
RHAS 2.1 kernel 2.4.19 or RH 8.0, kernel 2.4.19.  glibc 2.2.4-26
But, our program is compiled with the Intel compiler V7


Steps to Reproduce:
1.Do a df -k /myfilesystem
  You will get a file system with a name like "/dev/hdd6"
2.From within a C program,
  while ((m = getmntent(f)) != NULL)
  {
    if (!strcmp(m->mnt_dir, szDrive))
    {
      j += sprintf(sb + j, "\t<name>%s</name>\n", m->mnt_fsname);
    }
  }

  If this is a Redhat system with Anaconda, you will get back a file
  system name in the format "LABEL=/myfs".


Actual Results:
df -k returns /dev/.. format
getmntent's mnt_fsname returns LABEL=/... format



Expected Results:
I would prefer both return the /dev/... format so it is the same user experience
in RedHat and SuSE.  But, I need them to be consistent so we can match up the
results.

 


Additional Information:
I am pretty sure that getmntent is pulling the information from /etc/fstab.
RedHat's Anaconda uses the LABEL=/ format for file systems it sets up.  
I am not sure where df gets its information.

If I can't get a fix, I need a work around.  I need a shell command that
given a mount point, I can get the FileSystem name that is in the LABEL= format

OR

A C library routine like getmntent that will return File System names
like df does.

A workaround needs to work on either SuSE or RH.

And, yes, I believe I could change the values in /etc/fstab so getmntent 
works as expected.  But, we are delivering a product that hopefully will be
used by a lot of people with different levels of experience.  I am NOT
willing to recommend they all change their /etc/fstab.
this is an install (anaconda) / file system issue which I think
should be best addressed by Red Hat.  SuSE does not have this problem.  As
Mary pointed out above, anaconda uses the LABEL= format (instead of /dev/
format) as it sets up file systems in /etc/fstab.  Thanks.