Thread: LVM Rescue Help - Can't boot

hi gang,

i've done stupid...closed laptop lid while doing apt-get upgrade. well, late @ night , falling asleep on laptop. anyways, when boot now, "the disk drive / not ready yet or not present" , dumps me single user mode or rescue mode.

when first installed ubuntu 10.04 desktop 64-bit, did default install. main partition should 1 big lvm volume root et al stuck in there.

next booted off of live ubuntu cd attempt rescue. when run fdisk -l still sees partitions:

disk /dev/sda: 500.1 gb, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk identifier: 0x0009cf3f

device boot start end blocks id system
/dev/sda1 * 2048 569539157 284768555 83 linux
/dev/sda2 960167934 976773119 8302593 5 extended
/dev/sda5 960167936 976773119 8302592 82 linux swap / solaris


when run pvscan says "no matching physical volumes found".
installed lvm2 follows...
sudo -i
apt-get install lvm2

, ran these commands:
modprobe dm-mod
vgchange -a y

still nothing. it's not finding volumegroup config info think.

tried extract lvm configuration file beginning of partition with:
dd if=/dev/sda1 bs=512 count=255 skip=1 of=/tmp/lvm.txt

when @ lvm.txt i'm seeing binary data of course no lvm config data.

doing wrong? data hosed? else can do?

tips can give.

cheers,

tony

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