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Re: [linux-lvm] Boot fails after change of motherboard: No volume groups found



Volker Englisch <Volker englisch us> wrote:

> I am running FC4 (with AMD64) and was able to boot the machine without
> problems until Friday when I had to change my motherboard.
> Since then it appears that I'm unable to boot because the system can
> not find my LVM.  I see this error message after grub selected the OS:
>    Red Hat nash version 4.2.15 starting
>       Reading all physical volumes. This may take a while ...
>       No volume groups found
>       Unable to find volume group "VolGroup00"
> 
> and as a result a kernel panic.
> I can start the machine by using the installation disk and boot with
> 'linux rescue' and then I can see my volume and access the data.
> 
> I have two SATA hard drives with a /boot partition and the volume
> group on the first one and the second HDD has just regular partitions:
>    Filesystem                       Size   Used  Avail Use%  Mounted on
>    /dev/mapper/VolGroup00-LogVol04   15G   7.2G   6.4G  54%  /var
>    /dev/mapper/VolGroup00-LogVol03   34G    12G    20G  37%  /backup
>    /dev/mapper/VolGroup00-LogVol00   24G   7.9G    15G  35%  /
>    /dev/sda1                         99M    29M    65M  31%  /boot
>    /dev/sdb3                        138G    18G   113G  14%  /free
>    /dev/mapper/VolGroup00-LogVol02   29G   3.4G    24G  13%  /home
>    /dev/sdb2                         46G   1.2G    43G   3%  /home/public
>    /dev/sdb1                         46G   706M    43G   2%  /home/mail
> 
> 
> Why would the boot process not find my volume group but does when I'm
> starting the OS with the rescue disk (or Knoppix)?

Does your new motherboard use a different SATA controller?  Perhaps
your initrd doesn't have the proper driver.

galen


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