block/nfs: Add create_opts
The nfs protocol driver is capable of creating images, but did not specify any creation options. Fix it. A way to test this issue is the following: $ qemu-img create -f nfs nfs://127.0.0.1/foo.qcow2 64M Without this patch, it segfaults. With this patch, it does not. However, this is not something that should really work; qemu-img should check whether the parameter for the -f option (and -O for convert) is indeed a format, and error out if it is not. Therefore, I am not making it an iotest. Cc: qemu-stable@nongnu.org Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com> (cherry picked from commit fd752801) Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
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