On Wed, Jan 16, 2019 at 09:52:42 +0000, Daniel Berrange wrote: > On Wed, Jan 16, 2019 at 10:42:10AM +0100, Peter Krempa wrote: > > If a -drive has no image, using image properties makes qemu whine that > > they should not be used. > > > > This patch stops formating cache/readonly/... for empty drives > > for the pre-blockdev syntax. Unfortunately those parameters can't be > > added later when inserting media, but on the other hand qemu will start > > with an empty drive. > > So, IIUC, if you need to set cache/readonly/etc when inserting media, > then the fix is simply to use a QEMU that supports blockdev? Yes. With blockdev we setup the cache modes as the user wishes/configures. Currently AFAIK the user would not get the required mode anyways. This should not be any problem for cdroms. Floppy drives might end up with incorrect cache mode.
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