On Sat, Dec 27, 2014 at 09:28:53AM +0800, Haoyu Zhang wrote: > I want to P2V a redhat server to kvm vm, and lvm was used to manage disks > in the redhat server. > I want to only migrate the really used storage to vm image, which can > reduce the time cost significantly sometimes, > so I need the information of logical volume to physical disks bitmap, to > know which physical sectors were really used, > any ideas? > Is there a tool off-the-shelf have implemented the target?
Have you looked at virt-p2v(1)? http://libguestfs.org/virt-p2v.1.html I'm not sure if it sparsifies the disk image during conversion or whether you would have to run virt-sparsify(1) afterwards (http://libguestfs.org/virt-sparsify.1.html). virt-sparsify(1) can definitely unmap LVM's unused space. Stefan
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