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2015 Nov 03
0
Thoughts on virt-builder --output-alloc sparse|preallocated
...for replacing the horrible OCaml Arg module with GNU getopt_long (-oa == -o + -a). I initially tried to implement `--output-alloc sparse|preallocated' using the Planner. I added an extra planner flag [`Alloc, ("sparse"|"preallocated")]. I added extra transitions such as `Copy_sparse_never ("cp --sparse=never"). The problem is that some output locations don't support sparse output, eg. writing to a block device. If the user did: virt-builder --output-alloc sparse --output /dev/sdX then the planner stage would actually fail because it couldn't find a satisfac...