Re: LVM + dmraid

Could you supply some more background information?  What kind of raid 
setup do you have?  How did you configure LVM?  What kind of logical 
volumes did you create within the volume group?  How did you direct the 
system to boot from the correct root volume ( root= kernel parameter )?

I have not used LVM before but I have read a good deal about it, but I 
wrote the FakeRaidHowto you followed so I may be able to help.  My 
initial guess is that the initrd is mounting the wrong root filesystem, 
such as your /boot ( which is a regular partition, not part of the 
volume group right? ) and this partition has no /sys and /proc 
directories, which is why it complains about not being able to mount them.

By the way, is there a particular reason you want to use LVM over 
dmraid?  I'm not quite sure what benefits it would provide over 
conventional partitioning.

David Abrahams wrote:
> Having followed https://help.ubuntu.com/community/FakeRaidHowto and
> adapted it for LVM, I'm having some trouble booting the system.  The
> following was hand-copied off the screen after booting into recovery
> mode failed:
> 
>    8 logical volume(s) in volume group "main" now active
>   Done.
>   Begin: Running /scripts/local-premount
>   Done.
>   [  39.013123] kjournald starting.  Commit interval 5 seconds
>   [  39.013129] EXT3-fs: mounted filesystem with ordered data mode.
>   Begin: Running /scripts/local-bottom ...
>   Done.
>   Done.
>   Begin: Running /scripts/init-bottom ...
>   mount: Mounting /root/dev on /dev/.static/dev failed: No such file or directory
>   Done.
>   mount: Mounting /sys on /root/sys failed: No such file or directory
>   mount: Mounting /proc on /root/proc failed: No such file or directory
>   Target filesystem doesn't have /sbin/init
> 
> 
>   BusyBox v1.01 (Debian 1:1.01-4ubuntu3) Built-in shell (ash)
> 
> 
> 
> Can anyone offer some help at this point?  I have been searching for
> answers for days, but I don't think I understand the boot process well
> enough, and I haven't been able to find the right resources to learn
> about it.
> 
> Thanks in advance,
>