[linux-lvm] lvcreate complains and fails

[linux-lvm] lvcreate complains and fails

[arajendr]

Hi. I'm sure this has been asked a million times. 
I'm running LVM2 on a 2.6.6 kernel running debian. The LVM tools are
standard debian sid distribution. I have dm_mod.o in the kernel. Modprobe
tells me dev mapper is in the kernel.

I even created the file /dev/mapper/control with major and minor numbers
taken from /proc/devices and /proc/misc respectively.

Yet when I run lvcreate it gives me an error saying no /dev/mapper/control.
One other error it gives me is Incompatible libdevmapper 1.00.17-ioctl, and
kernel driver.

Could this be the problem its not creating logical volumes? If so, any way
to resolve it?

Thanks,
Anoop

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Re: [linux-lvm] lvcreate complains and fails

[Alasdair G Kergon]

On Sat, Jun 19, 2004 at 04:23:52PM +0000, arajendr@cse.uta.edu wrote:
> tells me dev mapper is in the kernel.
 
> Yet when I run lvcreate it gives me an error saying no /dev/mapper/control.
There's a script to create it correctly, though it sounds like you did 
the right thing.

> One other error it gives me is Incompatible libdevmapper 1.00.17-ioctl, and
> kernel driver.
What does 'lvm version' report?
Should be 3 versions: If it doesn't give the dm kernel driver version, 
look in the kernel message log for it.
 
Alasdair
-- 
agk@redhat.com

Re: [linux-lvm] lvcreate complains and fails

[Anoop Rajendra]

On Sat, 2004-06-19 at 16:43, Alasdair G Kergon wrote:
> On Sat, Jun 19, 2004 at 04:23:52PM +0000, arajendr@cse.uta.edu wrote:
> > tells me dev mapper is in the kernel.
>  
> > Yet when I run lvcreate it gives me an error saying no /dev/mapper/control.
> There's a script to create it correctly, though it sounds like you did 
> the right thing.
> 
> > One other error it gives me is Incompatible libdevmapper 1.00.17-ioctl, and
> > kernel driver.
> What does 'lvm version' report?
lvm version gives me 2.00.16
Library version is 1.00.17-ioctl
And the dm_mod driver gives me 4.1.0. This last one is from the kernel
logs.. not from when I run lvm version. When I run lvm version it still
says /dev/mapper/control not found.

> Should be 3 versions: If it doesn't give the dm kernel driver version, 
> look in the kernel message log for it.
>  
> Alasdair

Anoop

Re: [linux-lvm] lvcreate complains and fails

[Anoop Rajendra]

Actually, for some reason a reboot was required.
I didnt touch the kernel or anything. It just seemed to work fine after
a reboot.

Thanks anyway,
Anoop

On Sat, 2004-06-19 at 16:43, Alasdair G Kergon wrote:
> On Sat, Jun 19, 2004 at 04:23:52PM +0000, arajendr@cse.uta.edu wrote:
> > tells me dev mapper is in the kernel.
>  
> > Yet when I run lvcreate it gives me an error saying no /dev/mapper/control.
> There's a script to create it correctly, though it sounds like you did 
> the right thing.
> 
> > One other error it gives me is Incompatible libdevmapper 1.00.17-ioctl, and
> > kernel driver.
> What does 'lvm version' report?
> Should be 3 versions: If it doesn't give the dm kernel driver version, 
> look in the kernel message log for it.
>  
> Alasdair