I am using pygrub to boot and this is how I got it to work:
xm create -c <path to >dev3.cfg
at the boot splash select the kernel you are using to boot with..
press e to edit.
press e and edit the kernel line and put single right after the kernel
designation....
i.e. kernel /vmlinuz-2.6.18-274.3.1.el5xen single ro
root=/dev/VolGroup00/LogVol00 .....
press enter to save your change.
It will return back to the boot option menu
pyGRUB version 0.6
??????????????????????????????????????????????????????????????????????????
? kernel /vmlinuz-2.6.18-274.3.1.el5xen single ro
root=/dev/VolGroup00/> ?
? initrd /initrd-2.6.18-274.3.1.el5xen.img ?
? ?
? ?
? ?
? ?
? ?
? ?
??????????????????????????????????????????????????????????????????????????
Use the ^ and v keys to select which entry is highlighted.
Press 'b' to boot, 'e' to edit the selected command in the
boot sequence, 'c' for a command-line, 'o' to open a new line
after ('O' for before) the selected line, 'd' to remove the
selected line, or escape to go back to the main menu.
hit b to boot...
it worked for me a couple of times in succession.
Good luck.
--
Kevin Coleman - Network Engineer
kevin.coleman at laser2mail.com
LaserImage
On 09/20/2012 10:48 AM, Ed Heron wrote:
> You could loop mount the messed up disk on the host or you could mount
> the messed up disk on another DomU and change it.
>
> On Thu, 2012-09-20 at 08:58 -0400, me at tdiehl.org wrote:
>> Hi,
>>
>> I have a C5.8 machine with several DomU's. I fubared the fstab on one of them
>> and I need to get it into single user mode.
>>
>> Does anyone know how to do that? I tried adding single to the extras line
>> in /etc/xen/machine_name but it still tries to start in level 3.
>>
>> To make things worse, the root partition is on LVM.
>>
>> Alternatively, does anyone know how to access the image from DomU? I tried
>> to use kpartx but when I run VGscan, I do not get the lvm activated.
>>
>> Regards,
>>
> _______________________________________________
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> CentOS-virt at centos.org
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