[CentOS] mounting an lvm partition via a USB adapter

Robert Moskowitz rgm at htt-consult.com
Mon Jun 18 14:07:02 UTC 2007


Luciano Rocha wrote:
> On Mon, Jun 18, 2007 at 08:10:28AM -0400, Robert Moskowitz wrote:
>   
>>  I am trying to mount this (my old hard drive) from my Centos 5 install as a 
>>  USB drive so I can copy files over.
>>
>>  The second partition, /dev/sda2 is the one I really want and it is an lvm 
>>  partition.  When I am booted from this drive (as the installed IDE drive, 
>>  not as a usb drive) has for its  /etc/fstab:
>>
>>  # This file is edited by fstab-sync - see 'man fstab-sync' for details
>>  /dev/VolGroup00/LogVol01 /                       ext3    defaults        1 1
>>  LABEL=/boot             /boot                   ext3    defaults        1 2
>>  none                    /dev/pts                devpts  gid=5,mode=620  0 0
>>  none                    /dev/shm                tmpfs   defaults        0 0
>>  /dev/VolGroup00/LogVol02 /home                   ext3    defaults        1 2
>>  none                    /proc                   proc    defaults        0 0
>>  none                    /sys                    sysfs   defaults        0 0
>>  /dev/VolGroup00/LogVol00 swap                    swap    defaults        0 0
>>
>>
>>  But I do not see any /dev/Vol... when I boot from my Centos 5 drive (oh, I 
>>  have labeled the lvm partitions on that drive to start with Centos5 so that 
>>  its labels are different from my Centos 4 drive lablels).
>>     
>
> vgscan ; vgchange -ay VolGroup00
>   
I will give this a try, shortly.
> If the volume group happens to be the same as the one you're using on
> your new system,
I was careful to give the new drive a different name than the old 
one....  So I suspect I am set for this.
>  then that will probably fail, and I suggest renaming
> your current volume group using a rescue cd (don't forget to recreate
> the initrd, as it has the vg hardcoded).
>
>   
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