On 02/20/2014 08:52 AM, Eric Blake wrote: > Previously: > > qemu-img create -f qcow2 -o backing_file=/dev/null, xyz 1M > > creates xyz with a backing file of /dev/null and unspecified backing > format (and ignores the empty trailing option).
> And maybe patch get_opt_value() to detect and reject empty > trailing options as well. Further evidence for my desire to improve get_opt_value() for consistency: we already reject empty leading options... $ qemu-img create -f qcow2 -o ,backing_file=/dev/null xyz 1MUnknown option '' qemu-img: xyz: Invalid options for file format 'qcow2'. ...although we happily ignore an empty option: $ qemu-img create -f qcow2 -o '' xyz 1M Formatting 'xyz', fmt=qcow2 size=1048576 encryption=off cluster_size=65536 lazy_refcounts=off -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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