LVM tools on raw block copy

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http://serverfault.com – I have several raw block copies of disks that have both NTFS and Linux partitions. The parition tables generally have both a Windows NTFS partition and a Linux LVM partition. I need to work on all of these partitions to build a supertimeline (log2timeline) but I need a good way to find the ext partitions inside the LVM. I am not familiar at all with and of the LVM commands, though I have a decent grasp on the terminology. Once I get to the byte offset of the ext partitions, I'll be fine, but I'd rather not scan the disk byte by byte for the partition headers and superblocks. (HowTos)