[PVE-User] Problems booting PVE from USB Disk Drive

[ano-639d60e3 at enterto.com]

Thanks for your reply, Dietmar.  The boot fails because it is unable to mount
/dev/mapper/pve-root.  proxdebug got me to a shell and once there I was able to
determine that the logical volumes pve-root, pve-data and pve-swap were not
active.  I manually activated them via vgchange -ay and the boot continued to
completion.

Any idea what is causing these LVs to not be activated during the standard boot
process?   



On Fri 06/12/09 12:59 AM , 'Dietmar Maurer'  sent:
> You can pass the boot option ‘proxdebug’ – this gives you a
> shell. 
> FROM: pve-user-bounces at pve.proxmox.com
> [mailto:pve-user-bounces at pve.proxmox.com] ON BEHALF OF
> ano-639d60e3 at enterto.com
> SENT: Freitag, 12. Juni 2009 07:01
> TO: pve-user at pve.proxmox.com
> SUBJECT: [PVE-User] Problems booting PVE from USB Disk Drive   
> Hello, 
> 
> I seek your help in debugging a boot process that fails.  Does PVE
> have any "cheat codes" like Knoppix offers to manipulate the boot
> process?  Is there any way to pause the boot process so that I may
> read the console messages to get a sense as to what is going wrong? 
> If nothing else, it would be great to change the retry period to
> something longer than 5 seconds so that I would be able to scroll
> back and read the console messages. 
> 
> I am trying to create a bootable USB hard drive so that I can dual
> boot Windows and PVE on my laptop.  I believe that I need to dual
> boot rather than run Windows as a guest because I use the laptop for
> performing and composing music and the device drivers may not work
> well in a virtual environment.  But that may turn out not to be
> necessary after I conduct some side-by-side performance tests.  Until
> then, I have to use an external device because PVE takes over the
> entire drive upon which it is installed and so it would clobber my
> existing Windows. 
> 
> I installed PVE 1.3 onto the USB drive and the installation appeared
> to go pretty well.  However, when I boot from the USB drive, it
> eventually aborts with a Kernel panic after attempting to mount
> /dev/mapper/pve-root on /mnt and gives-up ater 3 tries. 
> 
> I tried to scroll back to see the console messages but don't get
> very far in the 5 seconds that PVE gives me between retries. 
> Scolling is no longer possible once the Kernel quits. 
> 
> Any advice on how to proceed from here would be greatly appreciated.
> ProxMox is doing a two-phase boot so we should be able to boot from
> USB devices once we can determine what is going wrong.  For anyone
> interested in learning along with me, here's a link to a good article
> on booting Linux from external USB and Firewire devices: 
> http://www.ibm.com/developerworks/linux/library/l-fireboot.html?ca=dgr-lnxw
> 09FireBoot[1]   
> 
> Thanks for your assistance, 
> 
> Max 
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