[dm-devel] help : device-mapper ioctl cmd 9 failed: Invalid argument

[kiran dalvi]

Hi All,

    Thanks for immediate attention on my mail.

   The fdisk output (partition table)for my machine is as follows:
*****************************************


    Disk /dev/hda: 255 heads, 63 sectors, 1240 cylinders
    Units = cylinders of 16065 * 512 bytes
    Device     Boot    Start       End    Blocks   Id  System
    /dev/hda1   *         1       261   2096451    6  FAT16
    /dev/hda2           262       522   2096482+   5  Extended
    /dev/hda3           523       535    104422+  83  Linux
    /dev/hda4           536      1240   5662912+  83  Linux
    /dev/hda5           262       390   1036161    1  FAT12
    /dev/hda6           391       400     80293+  83  Linux
    /dev/hda7           401       425    200781   8e  Linux LVM
    /dev/hda8           426       450    200781   8e  Linux LVM
    /dev/hda9           451       475    200781   fd  Linux raid autodetect
    /dev/hda10          476       522    377496   83  Linux

*********************************

I want to create volume using partions /dev/hda7 and /dev/hda8

   Now i changed my dmsetup (table file ) file which is as follows
******************************:

   0       409600  linear  /dev/hda7       0
   0       409600  linear  /dev/hda8       0

*******************************
   [Since two disk of same size]

   But when I execute the command

   # dmsetup create dmsetup dmsetup

   It gives the following error message

   device-mapper ioctl cmd 9 failed: Invalid argument
   Command failed

   I am not able to understand , whats going wrong in this ...

    Please guide me to solve this problem ...

   Thanks and Regards
        -  Kiran.

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