[linux-lvm] Missing volume group device

[linux-lvm] Missing volume group device

[langelino]

Hi,
I like to change the size of one of my logical volumes but the volume
group device is missing:

[root]# vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "vg01" using metadata type lvm2
[root]# lvscan
  ACTIVE            '/dev/vg01/slow' [242.77 GB] inherit
  ACTIVE            '/dev/vg01/usr' [3.91 GB] inherit
  ACTIVE            '/dev/vg01/home' [5.86 GB] inherit
  ACTIVE            '/dev/vg01/tmp' [1000.00 MB] inherit

But:

[root]# ls -l /dev/vg*
ls: /dev/vg*: No such file or directory

I am running Mandrake 10.1:

[root]# uname -a
Linux xxx.xxx.xxx 2.6.8.1-10mdk #1 Wed Sep 8 17:00:52 CEST 2004 i686
Intel(R) Pentium(R) 4 CPU 2.40GHz unknown GNU/Linux


Any hints what to do?

Matt

Re: [linux-lvm] Missing volume group device

[David Mohr]

On Fri, 2004-10-15 at 19:00, langelino wrote:
> [root]# ls -l /dev/vg*
> ls: /dev/vg*: No such file or directory

Just a guess, but what about vgmknodes?

~David

Re: [linux-lvm] Missing volume group device

[Alasdair G Kergon]

On Sat, Oct 16, 2004 at 12:43:35PM -0500, David Mohr wrote:
> On Fri, 2004-10-15 at 19:00, langelino wrote:
> > [root]# ls -l /dev/vg*
> > ls: /dev/vg*: No such file or directory
> Just a guess, but what about vgmknodes?
 
And LVM2 tools ignore any '/dev/' prefix anyway in this
context - 'lvresize vg01/lvol1' is sufficient.

Alasdair
-- 
agk@redhat.com

Re: [linux-lvm] Missing volume group device

[langelino]

Alasdair G Kergon wrote:

>On Sat, Oct 16, 2004 at 12:43:35PM -0500, David Mohr wrote:
>  
>
>>On Fri, 2004-10-15 at 19:00, langelino wrote:
>>    
>>
>>>[root]# ls -l /dev/vg*
>>>ls: /dev/vg*: No such file or directory
>>>      
>>>
>>Just a guess, but what about vgmknodes?
>>    
>>
Great. This was it. Thanks! This command appears to be a bit
hidden. It's neither mentioned in the lvm-howto nor in the lvm2 man-page.

> 
>And LVM2 tools ignore any '/dev/' prefix anyway in this
>context - 'lvresize vg01/lvol1' is sufficient.
>  
>
Well, yes but if one wants to shrink the filesystem on a logical volume
the tools to do so, like "resize_reiserfs", expect afaik a proper device.

Matt