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Blog di Bernardino (Dino) Ciuffetti
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21 Apr 17 How to create a sparse file from a block device

This is how to create a sparse file dump from a block device:
cp --sparse=always <(dd if=/dev/vg0/vmservice1 bs=8M iflag=direct | pv -pre --size=20G) /opt/backups/vmservice1.dat

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