On 11/23/20 1:02 AM, Michael D. Setzer II via users wrote:
dd bs=1M if=$localback |lzop -c - > /mnt/local$localpath$localimagename
I use lzop for compression of image, since it gives good compress and is
considerable faster than gzip.
Note: Since it does copy all blocks, it is best to clear the currently
unused blocks before hand. Long ago, did an image of a disk with clean
install of Fedora 3 on 80GB disk. Image created was 12G in size
compress. Cleared free space, and redid imaged, and size dropped to
2.5G. Compression does depend on what is on disk..
This is still not suitable for his purpose. It's not about the
compressed size, it's about the number of blocks copied. Using dd, you
are still copying *all* the unused blocks which will be really bad for a
thin LV which is the intended destination.
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