Hi, On Mon, September 24, 2012 08:21, Steven Noonan wrote: > It seems that ddrescue doesn't like using -S with block device output > targets. My use case is copying a sparse file (QEMU raw disk image) > onto an empty physical volume. I'd like to avoid doing 'dd > if=sparsefile of=/dev/sdf' because zeros from the sparse file will be > written to the target.
It isn't ddrescue, but ddpt should be able to do what you want. See http://sg.danny.cz/sg/ddpt.html You'd use a command like this: ddpt if=imagefile.bin of=/dev/sdd bs=512 bpt=128 oflag=sparse If you have an SSD, ddpt can also "trim" all-zero regions rather than just skip them. For that you'd do something like: ddpt if=imagefile.bin of=/dev/sdd bs=512 bpt=128 oflag=pt,trim Regards, -- Mark _______________________________________________ Bug-ddrescue mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-ddrescue
