lvm2 device mapper

["Salil Taneja, Noida" <salilt@noida.hcltech.com>]

hi,

 

I am using LVM2 , version -2.00.07 with device mapper library -1.00.07 on 2.6.0 test-9 kernel

 

i am facing these problems while doing so : -

 

1.) i get a warning message

    " /dev/mapper/control : open failed : No such file or directory .

       Is device mapper mapped to kernel ? "

 

To overcome this problem I started using LVM2 commands   with --driverloaded n option .

 

now the commands execute but i face another problem :-

2.) when using lvcreate or vgcreate, the command executes but no node entry is created  in the /dev/ directory

For eg :

 

I used the following command :

    lvcreate < options > -n lvm1 vg1 --driverloaded n

 

to verify this i used lvdisplay that gives the path of lvm1 as /dev/vg1/lvm1 ; but when i check in /dev/ directory there is no entry corresponding to vg1 or lvm1 .

 

Why isnt there any node corresoponding to vg1 or lvm1 in /dev/ ?  any clues...?????

 

 

Please suggest some nice solutions .

 

Thanks and Regards,
Salil Taneja
HCLT NetCentric Division,
A11, Sector 16,
Noida, India.
( office: +91-120-2510701 Ext 3155
( cell: +91-9810250247