Cannot Boot Ubuntu Server After Acronis Image

VitalSpark798 · 05-29-2009, 11:01 PM

I imaged my server using Acronis 2009 today. I have a mdadm software raid configuration that is currently only running on one drive. First, I needed to setup GRUB after i created the image on the main drive, no problems. Booted, made my changes, broke something and I need to go back to the image I created.

Running Ubuntu 6.06, Kernel 2.6.15-26-server, Intel 945 board.

I setup grub using gparted as my live CD by running...

Code:

# grub
# root (hd0,0)
# setup (hd0,0)

(Same thing I needed to do to get the main drive to boot)

Now when I boot, it loads GRUB rather than a flashing cursor, then I get...

Code:

ata1: disabling port

It does not boot past that. If I switch SATA channels I get the same message but with ata2.

Here is the output of my menu.lst file.

Code:

title           Ubuntu, kernel 2.6.15-26-server
root            (hd0,0)
kernel          /vmlinuz-2.6.15-26-server root=/dev/md1 ro quiet splash
initrd          /initrd.img-2.6.15-26-server
savedefault
boot

title           Ubuntu, kernel 2.6.15-26-server (recovery mode)
root            (hd0,0)
kernel          /vmlinuz-2.6.15-26-server root=/dev/md1 ro single
initrd          /initrd.img-2.6.15-26-server
boot

Recovery mode will boot to an extent, after enabling USB devices (which I have since unplugged), it will give me the error.

I noticed when I booted the second drive in the array that I got the error message, but it continued booting. I would have used this drive... but... it has been unplugged since I got it... so VERY old data...

When I imaged, Acronis detected the partitions as RAID partitions. Is it possible that where I imaged to a single drive as oppose to a volume and where it's booting off of an md device, that changing /dev/md1 to /dev/sda1 would have any positive effect?

I'm trying to get the output of df -h but server's too slow processing spam with a terrible config; but I THINK that my configuration is...

sda1=/boot
sda2=/
sda3=/var
sda4=swap

Does anybody have any suggestions?

VitalSpark798 · 05-30-2009, 07:22 AM

Just an update, by changing the md to sda2, I'm able to boot, but because it is in a RAID configuration, it tries to open all hard drives as md devices. Is there a way to trick the system and link the md devices that it is looking for to the sd devices?

Or is there a way to make the device an md device, but not lose all the data?

VitalSpark798 · 05-30-2009, 04:34 PM

I had to do as I thought, basically, I had to change the menu.lst to boot off of the sda device rather than the md device.

That allowed me to get to a limited shell. After that all I had to do was edit the fstab to reflect the same md to sda partition assignments and voila! Server boots! It complains a lot on boot about missing md devices, but is performing totally fine.