On 05/12/2014 10:05 AM, Mike Day wrote: > On Mon, May 12, 2014 at 11:53 AM, Eric Blake <ebl...@redhat.com> wrote: >> Ah, but it is: >> >> $ qemu-img create -f qcow2 -o help >> Supported options: >> size Virtual disk size >> compat Compatibility level (0.10 or 1.1) >> backing_file File name of a base image >> backing_fmt Image format of the base image >> encryption Encrypt the image >> cluster_size qcow2 cluster size >> preallocation Preallocation mode (allowed values: off, metadata) >> lazy_refcounts Postpone refcount updates >> >> and more importantly, it only appears in the help output of -f modes >> that actually support a backing file. Contrast: >> >> $ qemu-img create -f raw -o help >> Supported options: >> size Virtual disk size > > This is much more prominent in the top-level help: > > rebase [-q] [-f fmt] [-t cache] [-p] [-u] -b backing_file [-F > backing_fmt] filename
'rebase' lacks -o; so it must continue to document -b. This thread was started in context to the 'create' subcommand, not the 'rebase' subcommand. (Arguably, we may need to add -o to rebase someday, but that's not for this patch) -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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