LVM, resize /, & FC3 defaults

[Felipe Alfaro Solana]

On 12 Feb 2005, at 21:22, Jim Cornette wrote:

> Gordon Ewasiuk wrote:
>
>> Hi Fedora List,
>>
>> Ran into a problem with LVM and FC3.  I can work around the problem 
>> but was curious if anyone here has experienced the roadblock I hit.
>>
>> I installed FC3 in a testbed.  I accepted the default partition 
>> scheme which defaulted to LVM use on a single drive.
>>
>> A few weeks later, I went to resize the LVM partition.  First I had 
>> resize the ext3 filesystem with resize2fs.  I couldn't do a resize 
>> operation on a mounted / partition.  Not a problem.  I boot from 
>> Rescue CD...
>>
>> which can't see LVM partitions?
>>
>> I understand the technical problems about a generic rescue CD 
>> detecting the infinite number of possible LVM combinations and 
>> configurations.  That led me to wonder about the wisdom of having LVM 
>> as the default during installation of FC3.
>>
>> Comments please?
>>
>
> Another problem with having LVM installed by default is the trying to 
> install the next release in text mode does not recognize the LVM based 
> installation.
> the LVM is recognized using the GUI installer. This might be similar 
> to what you are running into when using the rescue CD to attempt to 
> resize the drives. A consideration might be to add a parameter to the 
> boot command to load  lvm related processes to be able to adjust your 
> lvm sizes to your desired specifications.

Once booted into text-mode rescue, invoke the following commands:

lvm lvscan
lvm vgchange -ay

This will scan for all LVM volumes and then will make them active and 
accessible.

lvm vgchange -an

will deactivate them all.