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From: Sarangi_Santosh@emc.com
To: <linux-kernel@vger.kernel.org>
Subject: PROBLEM: ioctl (HDIO_GETGEO) on partition
Date: Thu, 30 Oct 2008 06:02:17 -0400	[thread overview]
Message-ID: <A68C75D82BABF64AB13A6AC1875BF275052D707A@CORPUSMX10B.corp.emc.com> (raw)

Hi,
I am into a problem where the ioctl (HDIO_GETGEO) if failing on a device
partition(ex: /dev/emcpowerg1), which is working fine for full device (
ex: /dev/emcpowerg).
Basically I am trying to get start offset of the device partition
(hd_geometry.start).
The host information where I am seeing the above problem is as follows:

Linux ampersandmex01 2.6.18-53.el5PAE #1 SMP Wed Oct 10 16:48:18 EDT
2007 i686 i686 i386 GNU/Linux 

Red Hat Enterprise Linux Server release 5.1 (Tikanga)


Can anyone suggest if there is any patch available, so that the problem
can be resolved ?
If the patch is not available, then is there any other way, I can get
the above information without using  the ioctl (HDIO_GETGEO) ?

I am pasting the code snip set below for your reference.

Thanks,
-Santosh

<code snip>
  int                  fd;
  int                  sts;
  struct hd_geometry   hd_geometry_rec;
  unsigned int                offset;

  
  if ((fd = open(p_ppdevname, O_RDONLY | O_NONBLOCK)) < 0)
    {
        return OS_SYSTEM_CALL_FAILED;
    }
  if ((sts = ioctl(fd, HDIO_GETGEO, &hd_geometry_rec)) < 0) ------->
ioctl((HDIO_GETGEO)  is failing for device partition (/dev/emcpowerg1)
    {
      close(fd);
      return OS_SYSTEM_CALL_FAILED;
    }
  offset = (unsigned int) hd_geometry_rec.start;
.
.
.


             reply	other threads:[~2008-10-30 10:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-30 10:02 Sarangi_Santosh [this message]
2008-11-01 13:40 ` Mark Lord
2008-11-01 13:43   ` Mark Lord

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